Multidisciplinary Oceanic Information SysTem (MOIST)

ADCP dataset (RDI WorkHorse 600 KHz @ 2 profile / hour) from INGV/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: Teledyne RDI WorkHorse Sentinel ADCP 600 kHz

Period: October 12, 2019 - on going

Abstract: The Acoustic Doppler Current Profiler measures the water velocity using the physical Doppler shift principle. The transducer generates a pulse of sound at a known frequency that travels through the water and is reflected in all directions by particulate matter (e.g., sediment, biological matter, bubbles). Some portion of the reflected energy travels back at the transducer where the processing electronics measure the change in frequency. The Doppler shift measured by the transducer reflects the velocity of the water along the axis of the acoustic beam. The ADCP operates using three transducers generating beams with different orientations relative to the water flow then the measured velocity by each ADCP transducer is the projection of the 3D velocity onto the axis of its acoustic beam.

Purpose:

Quality of data:

ADCP dataset (RDI WorkHorse 600 KHz @ 2 profile / hour) from INGV/Dione seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2025-07-31T00:00:00+00:00

Area: East Sicily

Instrument: Teledyne RDI WorkHorse Sentinel ADCP 600 kHz

Period: December 21, 2023 - on going

Purpose:

Quality of data:

Pressure gauge dataset (Paroscientific 8CB-4000-I @ 1 sample / 15 sec) from INAF/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: Paroscientific Digiquartz Depth Sensor 8CB-4000-I

Period: October 12, 2019 - on going

Abstract: This sensor measures the hydrostatic (water column) pressure exerted on the sensor resulting from the pressure of water above its position and the atmospheric air pressure acting on the sea surface. Whether it is not possible to use a vented reference to equalise the offset due to atmospheric pressure, the true water level is obtained from the APG by measuring and subtracting the atmospheric pressure at the sea surface from the APG measurement.

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Quality of data:

Pressure gauge dataset (RBR quartz BPR @ 1 sample / 2 sec) from INGV/Calipso seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2023-12-21T12:57:43+00:00

Area: East Sicily

Instrument: RBR quartz Bottom Pressure Recorder (integrated Paroscientific Digiquartz pressure sensor)

Period: December 20, 2023 - on going

Abstract: This sensor measures the hydrostatic (water column) pressure exerted on the sensor.

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Quality of data:

Pressure gauge dataset (RBR quartz BPR @ 1 sample / 2 sec) from INGV/Dione seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2023-12-21T12:57:43+00:00

Area: East Sicily

Instrument: RBR quartz Bottom Pressure Recorder (integrated Paroscientific Digiquartz pressure sensor)

Period: December 20, 2023 - on going

Abstract: This sensor measures the hydrostatic (water column) pressure exerted on the sensor.

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Quality of data:

CTD dataset (SBE 37-SM @ 1 sample / 5 min) from INGV/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: SeaBird SBE 37-SM

Period: October 12, 2019 - on going

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired through a SBE 37-SM installed on SN-1 station.

Purpose: CTD is used in order to monitoring possible variations of bottom sea water masses in the area.

Quality of data:

CTD dataset (SBE 16plus V2 @ 1 sample / 10 min) from INGV/Calipso seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2025-07-31T00:00:00+00:00

Area: East Sicily

Instrument: SeaBird SBE 16plus V2

Period: December 21, 2023 - on going

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom).

Purpose: CTD is used in order to monitoring possible variations of bottom sea water masses in the area.

Quality of data:

CTD dataset (SBE 16plus V2 @ 1 sample / 10 min) from INGV/Dione seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2025-07-31T00:00:00+00:00

Area: East Sicily

Instrument: SeaBird SBE 16plus V2

Period: December 21, 2023 - on going

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom).

Purpose: CTD is used in order to monitoring possible variations of bottom sea water masses in the area.

Quality of data:

DACS dataset (SMO NEMO-SN1 DACS @ 1 Hz) from /NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: Tecnomare SMO NEMO-SN1 dedicated data acquisition and control system

Period: October 12, 2019 - on going

Abstract: The Data Acquisition and Control System is the set of hardware used to acquire and transfer to shore scientific data. It provides power to all the underwater instrumentation.

Purpose: The data generated by DACS are used to monitor the operativity of the system, in order to signal possible malfunctioning, and ease to find their reasons. In the data can be also found information about the status of the platform, that can be useful for scientific data users (i.e. heading and tilt).

Quality of data: Data are used mostly for engineering tasks, thus their precision and quality is not a relevant issue.

DPG dataset (SCRIPPS-UCSD DPG prototype v6.0 @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: SCRIPPS-UCSD Differential pressure gauge prototype v6.0

Period: October 12, 2019 - on going

Abstract: This sensor measures the hydrostatic (water column) pressure variation with respect to the pressure value resulting from the pressure of water above its position and the atmospheric air pressure acting on the sea surface.

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Quality of data:

Gravimeter dataset (IFSI (INAF) Prototype #2 @ 1 Hz) from INGV/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: IFSI (INAF) Prototype #2

Period: October 12, 2019 - on going

Abstract: A prototype of gravity meter built at the Istituto di Fisica dello Spazio Interplanetario (IFSI) of the National Institute of Astro-Physics (INAF) was installed on the GEOSTAR deep-sea multidisciplinary observatory in the Gulf of Cadiz (Portugal). The dataset contains relative values of gravity acceleration measured with sensitivity close to 10^-9 g/sqrt(Hz) in the range from 10^-5 to about 1 Hz.

Purpose: The instrument performs measurements of the Earth gravity acceleration due to low ground movements (tides) and fast ground movements (seismic wave propagation).

Quality of data:

Hydrophone dataset (SMID DT-405D(V)1 @ 2 kHz) from INGV/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: SMID seismic digital hydrophone prototype DT-405D(V)1

Period: October 12, 2019 - on going

Abstract: The dataset contains seafloor pressure data acquired by the seismic hydrophone installed on NEMO-SN1 observatory in the frequency band 50mHz - 1kHz. Pressure is sampled at 2kHz rate by two A/D converter (12 bit) which supply two data channel (with low, 30dB and high, 60 dB gain). Pressure data are stored in counts units; 1 count corresponds to 0.546 Pa and 0.0172 Pa for low and high gain channel respectively. Absolute time reference is available thanks to GPS data embedded in each packet of data and distributed from land station to seafloor.

Purpose: The wide frequency range allows to study acoustic ambient noise in the deep water, detect sperm whale and cetaceans and detect seismic signals. It was designed to be able to detect also low frequency hydroacustic signal generated by a tsunami in case this was generated by large seismic event on the seafloor.

Quality of data:

IMU dataset (LandMark10 IMU @ 100 Hz) from INAF/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: Gladiator LandMark10 MEMS Digital Inertial Measurement Unit (IMU)

Period: October 12, 2019 - on going

Abstract: An IMU works by detecting the current rate of acceleration using one or more accelerometers, and detects changes in rotational papameters like pitch, roll and yaw using one or more gyroscopes.

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Quality of data:

Scalar Magnetometer dataset (Marine Magnetics Sentinel (3000 m) @ 1 sample / hour) from INGV/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: Marine Magnetics Sentinel (3000 m)

Period: October 12, 2019 - on going

Abstract: This sensor is used to measure the total intensity of the magnetic induction vector. The model used is an Overhauser proton magnetometer supplied by GEM. Associated with the SMO 1 - Vector Magnetometer on-board SN1, the Overhauser proton magnetometer completes the magnetic measurement system ensuring reliability of vector data.

Purpose: The main aim of this scalar sensor is the calibration of SMO 1 - Vector Magnetometer data.

Quality of data:

Vector Magnetometer dataset (Fluxgate #1 @ 1 sample / 4 sec) from INGV/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: Fluxgate Prototype #1

Period: October 12, 2019 - on going

Abstract: This sensor provides the three components of the magnetic induction vector in the directions N-S, E-W and Z (vertical). It is a fluxgate prototype developed at INGV laboratories equipped with an inertial platform for levelling control. It provides continuous seafloor magnetic data which are important for two main reasons: a) they extend the magnetic observations from land to the seafloor, improving the spatial distribution in the Italian territory; b) these data are important for the study of short and long magnetic field time variations. The variational data allow us to estimate the resistivity structure underneath the area of observations and possibly to detect some magnetic variations related to some geo-hazards, such as earthquakes and tsunamis.

Purpose: The main aim is the continuous and almost real-time measurement of the three components of the Earth’s magnetic field in a very peculiar environment which in fact has a favorable impact on the quality of the measurements: first, the temperature is more stable at the sea bottom, especially in deep sea sites, so the instrumental drift due to temperature variations is absent or negligible. Second, the water column acts as a natural "shield" to the highest frequencies of the iono- and magnetosphere inducing fields.

Quality of data:

Oxygen meter dataset (AADI Optode 4831 @ 1 sample / min) from INGV/Calipso seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2023-12-21T00:00:00+00:00

Area: East Sicily

Instrument: AADI Oxygen Optode 4831

Period: December 21, 2023 - on going

Abstract: The Optode sensor measures the dissolved oxygen concentration in sea water using a lifetime-based luminescence quenching principle. The dataset includes a measured device temperature channel and the oxygen saturation values [%] computed from concentration and temperature.

Purpose: The sensor is used to monitor the oxygen concentration dissolved in sea water and to provide oxygen concentration values needed by the methane sensor calibration formula.

Quality of data:

Oxygen meter dataset (AADI Optode 4831 @ 1 sample / min) from INGV/Dione seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2023-12-21T00:00:00+00:00

Area: East Sicily

Instrument: AADI Oxygen Optode 4831

Period: December 21, 2023 - on going

Purpose: The sensor is used to monitor the oxygen concentration dissolved in sea water and to provide oxygen concentration values needed by the methane sensor calibration formula.

Quality of data:

Seismometer dataset (Guralp CER-0001 @ 250Hz - 100 Hz) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2013-10-22T12:36:00+00:00

Area: East Sicily

Instrument: Guralp CER-001 3 component broadband seismometer (120 s-100 Hz)

Period: December 20, 2023 - on going

Abstract: Seismometer - WIS03 - Repeater 1 dataset (CER-DD60) from INGV/Smart Cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network. Seismometer - WIS03: 37.55 N 15.43 E, depth 2033 m

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Quality of data:

Seismometer dataset (Guralp CER-0001 @ 250Hz - 100 Hz) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2013-10-22T12:36:00+00:00

Area: East Sicily

Instrument: Guralp CER-001 3 component broadband seismometer (120 s-100 Hz)

Period: December 20, 2023 - on going

Abstract: Seismometer - WIS04 - Repeater 2 dataset (CER-3D5F) from INGV/Smart Cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network. Seismometer - WIS04: 35.57 N 15.50 E, depth 1992 m

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Quality of data:

Seismometer dataset (Guralp CER-0001 @ 250Hz - 100 Hz) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2013-10-22T12:36:00+00:00

Area: East Sicily

Instrument: Guralp CER-001 3 component broadband seismometer (120 s-100 Hz)

Period: December 20, 2023 - on going

Abstract: Seismometer - WIS05 - Repeater 3 dataset (CER-0460) from INGV/Smart Cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network. Seismometer - WIS05: 37.61 N 15.55 E, depth 1917 m

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Quality of data:

Seismometer dataset (Guralp CMG-1T @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during EMSO-MIUR project in TestSite site (East Sicily), part of network.

2019-09-23T12:57:43+00:00

Area: East Sicily

Instrument: Guralp CMG-1T 3 component broadband seismometer (360 s-50 Hz)

Period: October 12, 2019 - on going

Abstract: This digital database comprises seismological data recorded during the SMO project by a 3 component broadband seismometer. The sensor was installed on the the NEMO-SN1 (Neutrino Mediterranean Observatory - Submarine Network 1) seafloor observatory, offshore of the Eastern coast of Sicily (Southern Italy) at a depth of 2036 m. The seismometer is installed in a dedicated vessel integrated in a separate structure connected to the observatory via a special mechanical release. To guarantee a good coupling with the sea bottom, the structure is disconnected just after the observatory touch-down and kept linked to the frame by a slack rope (Favali et al., 2006). The sensor is connected to a 24 bit digitizer on the observatory. The GPS signal is transmitted underwater to the digitizer, so that the data packages are time-stamped locally.

Purpose: This project is a continuation of GNDT 1, GNDT 2 and SMO 1 where the main objective was to establish a multiparameter seafloor observatory off-shore eastern Sicily. One of the main aspects of SN1 2019 remains long-term geophysical monitoring and broad-band seismic measurements from this site is of great interest given its proximity to the Etna volcano (~ 50 km) and to offshore seismogenic structures where some of the most destructive earthquakes in Italy took place (some of them generated tsunamis). For this reason a tsunami detection systems is implemented on-board the observatory and the seismometer is an important component.

Quality of data:

Temperature sensor dataset (SBE 19plus @ 2 Hz - 1 Hz) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2003-12-14T00:00:00+00:00

Area: East Sicily

Instrument: SeaBird SBE 19plus

Period: December 20, 2023 - on going

Abstract: Temperature sensor - WIS03 - Repeater 1 from INGV/Smart Cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network. The dataset contains sea bottom Temperature data acquired through a SBE 19 temperature sensor installed on Smart Cable. Temperature sensor - WIS03: 37.55 N 15.43 E, depth 2033 m

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Quality of data:

Temperature sensor dataset (SBE 19plus @ 2 Hz - 1 Hz) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2003-12-14T00:00:00+00:00

Area: East Sicily

Instrument: SeaBird SBE 19plus

Period: December 20, 2023 - on going

Abstract: Temperature sensor - WIS04 - Repeater 2 from INGV/Smart Cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network. The dataset contains sea bottom Temperature data acquired through a SBE 19 temperature sensor installed on Smart Cable. Temperature sensor - WIS04: 35.57 N 15.50 E, depth 1992 m

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Quality of data:

Temperature sensor dataset (SBE 19plus @ 2 Hz - 1 Hz) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2003-12-14T00:00:00+00:00

Area: East Sicily

Instrument: SeaBird SBE 19plus

Period: December 20, 2023 - on going

Abstract: Temperature sensor - WIS05 - Repeater 3 from INGV/Smart Cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network. The dataset contains sea bottom Temperature data acquired through a SBE 19 temperature sensor installed on Smart Cable. Temperature sensor - WIS05: 37.61 N 15.55 E, depth 1917 m

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Quality of data:

Pressure gauge dataset (Paroscientific 8CB-4000-I @ 1 sample / 15 sec) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2023-12-21T12:57:43+00:00

Area: East Sicily

Instrument: Paroscientific Digiquartz Depth Sensor 8CB-4000-I

Period: December 20, 2023 - October 07, 2024

Abstract: This sensor is located at the Repeater 3 (station WIS05 located at 37.61 N 15.55 E depth 1917 m) and measures the hydrostatic (water column) pressure exerted on the sensor resulting from the pressure of water above its position and the atmospheric air pressure acting on the sea surface. Pressure data values are in bar.Pressure sensor - WIS05: 37.61 N 15.55 E, depth 1917 m

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Quality of data:

Pressure gauge dataset (Paroscientific 8CB-4000-I @ 1 sample / 15 sec) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2023-12-21T12:57:43+00:00

Area: East Sicily

Instrument: Paroscientific Digiquartz Depth Sensor 8CB-4000-I

Period: December 20, 2023 - June 06, 2024

Abstract: This sensor is located at the Repeater 2 (station WIS04 located at 37.57 N 15.50 E depth 1992 m) and measures the hydrostatic (water column) pressure exerted on the sensor resulting from the pressure of water above its position and the atmospheric air pressure acting on the sea surface. Pressure data values are in bar.Pressure sensor - WIS04: 35.57 N 15.50 E, depth 1992 m

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Quality of data:

Pressure gauge dataset (Paroscientific 8CB-4000-I @ 1 sample / 15 sec) from INGV/SMART cable seafloor platform during INSEA project in Western Ionian Sea site (East Sicily), part of EMSO network.

2023-12-21T12:57:43+00:00

Area: East Sicily

Instrument: Paroscientific Digiquartz Depth Sensor 8CB-4000-I

Period: December 20, 2023 - March 14, 2024

Abstract: This sensor is located at the Repeater 1 (station WIS03 located at 37.56 N 15.43 E depth 2033 m) and measures the hydrostatic (water column) pressure exerted on the sensor resulting from the pressure of water above its position and the atmospheric air pressure acting on the sea surface. Pressure data values are in bar.Pressure sensor - WIS03: 37.56 N 15.43 E, depth 2033 m

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Quality of data:

CTD dataset (SBE 16plus @ 1 sample / 10 min) from INGV/SN-4 seafloor platform during MARSITE project in Marmara Sea site (Marmara Sea), part of EMSO network.

2013-10-17T17:00:00+00:00

Area: Marmara Sea

Instrument: SeaBird SBE 16plus

Period: September 28, 2013 - April 22, 2014

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data acquired by a SBE 16 plus device installed on SN4 station.

Purpose: Conductivity, Temperature and Pressure are used to monitor the sea water masses variation in the canyon where the SN4 observatory was deployed. From CTD data it is possible to compute the salinity which is a parameter needed to evaluate the true dissolved oxygen concentration from raw oxygen concentration measured by the Optode Oxygen sensor.

Quality of data:

Current meter dataset (Nobska MAVS-3 @ 5 Hz) from /SN-4 seafloor platform during MARSITE project in Marmara Sea site (Marmara Sea), part of EMSO network.

2013-10-17T16:28:00+00:00

Area: Marmara Sea

Instrument: Nobska MAVS-3 3 axis acoustic current meter

Period: September 28, 2013 - April 22, 2014

Abstract: High-frequency current meter provides punctual sea current measurements.

Purpose: Monitor the current flow at the SN4 installation site. The high sampling rate (5Hz) was used to monitor the hydrodynamic condition inside the station in order to better observe possible influences of seawater currents on seismological data.

Quality of data:

Methane meter dataset (Franatech METS @ 1 Hz) from INGV/SN-4 seafloor platform during MARSITE project in Marmara Sea site (Marmara Sea), part of EMSO network.

2013-10-17T17:33:00+00:00

Area: Marmara Sea

Instrument: Franatech METS Methane Sensor

Period: September 28, 2013 - April 22, 2014

Abstract: The Methane sensor provides two output analogue channels (Vmet, Vt) which are sampled at 1Hz by a dedicated Analog To Digital Converter of the SN4 station. From (Vmet, Vt) through a calibration formula, the dissolved methane concentration in sea water can be computed. The sensor has been used with the pump.

Purpose: The purpose of the methane sensor installation on the SN4 observatory is to monitor the variation of methane gas dissolved in sea water. The installation site is rich in gas seepage from seafloor, thus the variation in methane dissolved concentration can provide a mean to monitor gas emission from seabed. This sensor enable us to study methane gas emission dynamic and its correlation with other physical, oceanographical and seismic parameters in the site.

Quality of data:

Methane meter dataset (Franatech METS @ 1 Hz) from INGV/SN-4 seafloor platform during MARSITE project in Marmara Sea site (Marmara Sea), part of EMSO network.

2013-10-17T17:25:00+00:00

Area: Marmara Sea

Instrument: Franatech METS Methane Sensor

Period: September 28, 2013 - April 22, 2014

Quality of data:

Oxygen meter dataset (AADI Optode 3830 @ 1 Hz) from INGV/SN-4 seafloor platform during MARSITE project in Marmara Sea site (Marmara Sea), part of EMSO network.

2013-10-17T16:38:00+00:00

Area: Marmara Sea

Instrument: AADI Oxygen Optode 3830

Period: September 28, 2013 - April 22, 2014

Purpose: The sensor is used to monitor the oxygen concentration dissolved in sea water and to provide oxygen concentration values needed by the methane sensor calibration formula.

Quality of data:

Turbidity meter dataset (ECO-NTU(RT)D 6000m @ 1 sample / 10 min) from INGV/SN-4 seafloor platform during MARSITE project in Marmara Sea site (Marmara Sea), part of EMSO network.

2013-10-17T17:01:00+00:00

Area: Marmara Sea

Instrument: Wet Labs ECO-NTU(RT)D 6000m

Period: September 28, 2013 - April 22, 2014

Abstract: The dataset provides the turbidity in the sea water measured by a backscattering meter.

Purpose: Monitor the change in turbidity of sea water.

Quality of data:

Seismometer dataset (Guralp CMG-40T @ 100 Hz) from INGV/SN-4 seafloor platform during MARSITE project in Marmara Sea site (Marmara Sea), part of EMSO network.

2013-10-17T17:10:00+00:00

Area: Marmara Sea

Instrument: Guralp CMG-40T 3 component broadband seismometer (30 s-50 Hz)

Period: September 28, 2013 - April 12, 2014

Abstract: TBD

Purpose:

Quality of data:

ADCP dataset (RDI WorkHorse 600 KHz @ 2 profile / hour) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-08-03T11:30:00+00:00

Area: East Sicily

Instrument: Teledyne RDI WorkHorse Sentinel ADCP 600 kHz

Period: June 10, 2012 - June 12, 2013

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Quality of data:

Pressure gauge dataset (Paroscientific 8CB-4000-I @ 1 sample / 15 sec) from INAF/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-07-27T19:42:00+00:00

Area: East Sicily

Instrument: Paroscientific Digiquartz Depth Sensor 8CB-4000-I

Period: June 10, 2012 - June 12, 2013

Purpose:

Quality of data:

Current meter dataset (Nobska MAVS-3 @ 2 Hz) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-07-30T10:42:00+00:00

Area: East Sicily

Instrument: Nobska MAVS-3 3 axis acoustic current meter

Period: June 10, 2012 - June 12, 2013

Abstract: This sensor performs water current measures in a three axial reference system. Flow velocity and direction is measured by observing the time-of-arrival difference of sound along the acoustic paths. It has also a compass in order to measure the earth's magnetic field, and a tilt sensor to measure the instrument's angle. Using these measurements, the direction of the instrument can be determined and consequently the flow direction.

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Quality of data:

DACS dataset (SMO NEMO-SN1 DACS @ 1 Hz) from /NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2013-03-22T15:40:00+00:00

Area: East Sicily

Instrument: Tecnomare SMO NEMO-SN1 dedicated data acquisition and control system

Period: June 10, 2012 - June 12, 2013

Abstract: The Data Acquisition and Control System is the set of hardware used to acquire and transfer to shore scientific data. It provides power to all the underwater instrumentation.

Quality of data: Data are used mostly for engineering tasks, thus their precision and quality is not a relevant issue.

DPG dataset (SCRIPPS-UCSD DPG prototype v6.0 @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-08-03T12:40:00+00:00

Area: East Sicily

Instrument: SCRIPPS-UCSD Differential pressure gauge prototype v6.0

Period: June 10, 2012 - June 12, 2013

Purpose:

Quality of data:

Hydrophone dataset (OAS E-2PD @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-08-02T19:04:00+00:00

Area: East Sicily

Instrument: OAS E-2PD

Period: June 10, 2012 - June 12, 2013

Abstract: TBD

Purpose:

Quality of data:

Hydrophone dataset (SMID DT-405D(V)1 @ 2 kHz) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-08-03T12:04:00+00:00

Area: East Sicily

Instrument: SMID seismic digital hydrophone prototype DT-405D(V)1

Period: June 10, 2012 - June 12, 2013

Quality of data: The set contains 292.5 Gbyte of data stored in 52560 files of ten minutes each and covers 8717.82 hours of acquisition (292.5 days) which was continuous during the mission, excluding some periods when acquisition was stopped for observatory maintenance and calibrations.

IMU dataset (LandMark10 IMU @ 100 Hz) from INAF/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-08-03T16:00:00+00:00

Area: East Sicily

Instrument: Gladiator LandMark10 MEMS Digital Inertial Measurement Unit (IMU)

Period: June 10, 2012 - June 12, 2013

Purpose:

Quality of data:

Scalar Magnetometer dataset (Marine Magnetics Sentinel (3000 m) @ 1 sample / hour) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-07-31T15:34:00+00:00

Area: East Sicily

Instrument: Marine Magnetics Sentinel (3000 m)

Period: June 10, 2012 - June 12, 2013

Purpose: The main aim of this scalar sensor is the calibration of SMO 1 - Vector Magnetometer data.

Quality of data: The data series is complete for this sensor, almost 100% of expected bytes has been recorded.

Vector Magnetometer dataset (Fluxgate #1 @ 1 sample / 4 sec) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-07-31T15:40:00+00:00

Area: East Sicily

Instrument: Fluxgate Prototype #1

Period: June 10, 2012 - June 12, 2013

Quality of data: The data series is almost complete for this sensor: ~96% of expected bytes has been recorded (see problems below). Althougth built with a 0.5 Hz (1 sample / 2 seconds) sampling rate, this sensor began measuring with a sampling rate of 1 sample / 3-5 seconds until September 22, 2012 (21:51:10) when its sampling rate swiched to its proper samplig rate (0.5 Hz) without an apparent reason. Anyway, ~4% of data are missing because the sensor delays erratically its measurements for 4-5 seconds for unknown reasons. Since timestamp is associated to data after on-shore acquisition with a resolution of milliseconds, it may seem that there exists a mismatch in sampling rate when rounding to seconds, but it is only apparent (compare to Julian date). A mismatch between the data timestamp (date/hour) and that coming from the sensor (in Julian format) exists since this latter cannot be changed nor adjusted. Erratically, during on-shore acquisition some data strings are corrupted and this results in gaps. Recurrent (hourly) spikes are due to the proximity of the SMO Marine Magnetics Sentinel scalar magnetometer (with 1 hour sampling).

Seismometer dataset (Guralp CMG-1T @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-07-18T20:00:00+00:00

Area: East Sicily

Instrument: Guralp CMG-1T 3 component broadband seismometer (360 s-50 Hz)

Period: June 10, 2012 - June 12, 2013

Purpose: This project is a continuation of GNDT 1 and GNDT 2 where the main objective was to establish a multiparameter seafloor observatory off-shore eastern Sicily. One of the main aspects of SMO remains long-term geophysical monitoring and broad-band seismic measurements from this site is of great interest given its proximity to the Etna volcano (~ 50 km) and to offshore seismogenic structures where some of the most destructive earthquakes in Italy took place (some of them generated tsunamis). For this reason a tsunami detection systems is implemented on-board the observatory and the seismometer is an important component.

Quality of data: The Z (vertical) and N components have recorded data of good quality for the duration of the deployment. The E component recorded only electronic noise from the beginning of the experiment till the 24th of August (~9 UTC) due to the fact that the mass was not released. After we were able to release the mass the E component recorded good quality signal for the rest of the mission. Due to tests, during June 2012, there are periods with electronic disturbances and presence of gaps in the data. A periodic disturbance is visible on all components due to the acoustic signal emitted when the ADCP is sampling (2 profiles/hour).

CTD dataset (SBE 37-SM @ 1 sample / hour) from INGV/NEMO-SN1 seafloor platform during SMO project in Western Ionian Sea site (East Sicily), part of EMSO network.

2012-07-24T17:00:00+00:00

Area: East Sicily

Instrument: SeaBird SBE 37-SM

Period: June 10, 2012 - June 12, 2013

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired through a SBE 37-SM installed on SN-1 station.

Purpose: CTD is used in order to monitoring possible variations of bottom sea water masses in the area.

Quality of data:

Current meter dataset (FSI 3D-ACM @ 2 Hz) from INGV/GMM seafloor platform during HYPOX project in Ionian Sea lagoons and embayments site (Greek), part of HYPOX network.

2013-12-19T14:22:00+00:00

Area: Greek

Instrument: Falmouth 3D-ACM 3 axis acoustic current meter

Period: September 22, 2010 - January 01, 2011

Abstract: TBD

Purpose:

Quality of data:

Turbidity meter dataset (ECO-BB(RT)D 6000m @ 1 sample / 5 sec) from INGV/GMM seafloor platform during HYPOX project in Ionian Sea lagoons and embayments site (Greek), part of HYPOX network.

2013-12-19T14:21:00+00:00

Area: Greek

Instrument: Wet Labs ECO-BB(RT)D 6000m

Period: September 22, 2010 - January 01, 2011

Abstract: TBD

Purpose:

Quality of data:

CTD dataset (SBE 37-SI @ 1 sample / min) from INGV/GMM seafloor platform during HYPOX project in Ionian Sea lagoons and embayments site (Greek), part of HYPOX network.

2013-12-19T14:15:00+00:00

Area: Greek

Instrument: SeaBird SBE 37-SI

Period: September 22, 2010 - December 31, 2010

Abstract: TBD

Purpose:

Quality of data:

H2S meter dataset (AMT H2S microsensor @ 1 sample / 5 sec) from INGV/GMM seafloor platform during HYPOX project in Ionian Sea lagoons and embayments site (Greek), part of HYPOX network.

2013-12-19T14:21:00+00:00

Area: Greek

Instrument: AMT GmbH Shallow Water Hydrogen Sulphide

Period: September 22, 2010 - December 31, 2010

Abstract: TBD

Purpose:

Quality of data:

Methane meter dataset (Franatech METS @ 1 sample / 5 sec) from INGV/GMM seafloor platform during HYPOX project in Ionian Sea lagoons and embayments site (Greek), part of HYPOX network.

2013-12-19T14:20:00+00:00

Area: Greek

Instrument: Franatech METS Methane Sensor

Period: September 22, 2010 - December 31, 2010

Abstract: TBD

Purpose:

Quality of data:

Methane meter dataset (Franatech METS @ 1 sample / 5 sec) from INGV/GMM seafloor platform during HYPOX project in Ionian Sea lagoons and embayments site (Greek), part of HYPOX network.

2013-12-19T14:20:00+00:00

Area: Greek

Instrument: Franatech METS Methane Sensor with pump

Period: September 22, 2010 - December 31, 2010

Abstract: TBD

Purpose:

Quality of data:

Oxygen meter dataset (AADI Optode 3830 @ 1 sample / min) from INGV/GMM seafloor platform during HYPOX project in Ionian Sea lagoons and embayments site (Greek), part of HYPOX network.

2013-12-19T14:23:00+00:00

Area: Greek

Instrument: AADI Oxygen Optode 3830

Period: September 22, 2010 - December 31, 2010

Abstract: TBD

Purpose:

Quality of data:

Pressure gauge dataset (Paroscientific 8CB-4000-I @ 1 sample / 15 sec) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-27T14:29:20+00:00

Area: Gulf of Cadiz

Instrument: Paroscientific Digiquartz Depth Sensor 8CB-4000-I

Period: November 10, 2009 - July 10, 2010

Abstract: The dataset contains absolute pressure values measured by the Paroscientific 8CB-4000-I installed on the sea-bottom station GEOSTAR in the Gulf of Cadiz. Data are sampled at 15 seconds and with a resolution of 0.01 mbar.

Purpose: Pressure data were used to real time monitor the sea water level for tsunami warning purpose in the Gulf of Cadiz area. The data were analysed by a dedicated algorithm running on GEOSTAR which is able to detect a tsunami wave travelling on the sea surface and corresponding to few centimetres of sea water level changes.

Quality of data:

Current meter dataset (Nobska MAVS-3 @ 5 Hz) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-27T15:29:20+00:00

Area: Gulf of Cadiz

Instrument: Nobska MAVS-3 3 axis acoustic current meter

Period: November 10, 2009 - July 10, 2010

Abstract: High-frequency current meter (MAVS3 made by NOBSKA manufacturer) was mounted on GEOSTAR to collect data with high sampling rate. It provided punctual current measurements to monitoring the hydrodynamic condition inside the station.

Purpose: The high sampling rate (5Hz) was used in order to better observe possible influences of seawater currents on seismological data.

Quality of data:

ADCP dataset (RDI WorkHorse 300 kHz @ 1 profile / hour) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-27T13:29:10+00:00

Area: Gulf of Cadiz

Instrument: Teledyne RDI WorkHorse Sentinel ADCP 300 kHz

Period: November 10, 2009 - July 10, 2010

Abstract: ADCP velocity profiles were obtained with 3m vertical resolution through a 300 kHz Workhorse ADCP unit mounted in a upward looking configuration on one side of the GEOSTAR station free from any possible obstacle. The record lasted one year with an hourly sampling rate providing current data of water column above the station.

Purpose: ADCP current profiler allowed to monitor the hydrodynamic condition of a water column only 50 m high, because of the lack of big quantity of particle matter necessary to scatter the acoustical signal.

Quality of data:

Hydrophone dataset (OAS E-2PD @ 100 Hz) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-27T16:29:20+00:00

Area: Gulf of Cadiz

Instrument: OAS E-2PD

Period: November 10, 2009 - July 10, 2010

Abstract: TBD

Purpose:

Quality of data:

Seismometer dataset (Guralp CMG-40T @ 100 Hz) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-24T17:12:00+00:00

Area: Gulf of Cadiz

Instrument: Guralp CMG-40T 3 component broadband seismometer (30 s-50 Hz)

Period: November 10, 2009 - July 10, 2010

Abstract: TBD

Purpose:

Quality of data:

Gravimeter dataset (IFSI (INAF) Prototype #2 @ 1 Hz) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-27T12:30:00+00:00

Area: Gulf of Cadiz

Instrument: IFSI (INAF) Prototype #2

Period: November 11, 2009 - July 10, 2010

Abstract: The dataset contains relative values of gravity acceleration measured by a prototype of gravity meter, with sensitivity close to 10^-9 g/sqrt(Hz) in the range from 10^-5 to about 1 Hz. The prototype was developed at the Istituto di Fisica dello Spazio Interplanetario (IFSI) of the National Institute of Astro-Physics (INAF). The gravimeter acquired with a sampling rate of 1 Hz.

Purpose: The instrument performs measurements of the Earth gravity acceleration due to low ground movements (tides) and fast ground movements (seismic wave propagation).

Quality of data: Systematic noise lasting for 5 seconds is present at start of each daily file due to the midnight clock synchronisation. The 247 daily text files are stored in a folder of 749 MB. In general the gravimetric data shows a good recording quality.

CTD dataset (SBE 16plus @ 1 sample / hour) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-27T13:29:00+00:00

Area: Gulf of Cadiz

Instrument: SeaBird SBE 16plus

Period: November 10, 2009 - July 10, 2010

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired through a SBE 16 plus installed on GEOSTAR station. The collection period ranges from November 2009 through July 2010.

Quality of data:

Turbidity meter dataset (ECO-BB(RT)D 6000m @ 1 sample / hour) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-27T13:29:20+00:00

Area: Gulf of Cadiz

Instrument: Wet Labs ECO-BB(RT)D 6000m

Period: November 10, 2009 - July 10, 2010

Abstract: Turbidity measurements were provided by means of an auxiliary turbidity meter sensor (made by WetLabs manufacturer) connected to the CTD probe. The collection period ranges from November 2009 through July July 2010.

Purpose: CTD and turbidity meter have been used in order to monitoring possible variations of bottom sea water masses in an area strongly interested by the mixing of different water masses (Mediterranean and Atlantic waters). Turbidity measurement also provides information about possible resuspension of particle matter due to bottom currents.

Quality of data:

Seismometer dataset (Guralp CMG-40T @ 100 Hz) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.

2011-10-28T20:48:00+00:00

Area: Marmara Sea

Instrument: Guralp CMG-40T 3 component broadband seismometer (30 s-50 Hz)

Period: October 05, 2009 - March 15, 2010

Abstract: This digital database comprises seismological data recorded continuously during the MARMARA-DM 1 project by a 3 component broadband seismometer. The sensor was installed on a GEOSTAR-class deep-sea multidisciplinary observatory, deployed in the Marmara Sea at a depth of 167 m. The seismometer is installed in a dedicated vessel integrated in a separate structure connected to the observatory via a special mechanical release. To guarantee a good coupling with the sea bottom, the structure is disconnected just after the observatory touch-down and kept linked to the frame by a slack rope (Favali et al., 2006). The sensor was connected to a 24 bit digitizer, and its time reference came from an external rubidium clock connected to the digitizer.

Purpose: The major scientific goal of the SN-4 experiment is to contribute to the knowledge on the relationship between gas seepage and seismic signals. To observe a large variety of seismic signals we use a broadband seismometer. The deployment site is on the sea prosecution of the active North Anatolian fault,which has been the source of many destructive earthquakes, and presents a continuous seismic activity and methane degassing.

Quality of data:

Methane meter dataset (Franatech METS @ 1 Hz) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.

2011-10-28T19:21:00+00:00

Area: Marmara Sea

Instrument: Franatech METS Methane Sensor

Period: October 05, 2009 - March 15, 2010

Quality of data: The data set is complete. The methane concentration computed from Vmet and Vt is a raw-uncorrected data; to obtain true methane concentration the raw value must be corrected taking into account oxygen concentration, following the device calibration formula. The temperature channel measures the device temperature.

Oxygen meter dataset (AADI Optode 3830 @ 1 Hz) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.

2011-10-28T19:23:00+00:00

Area: Marmara Sea

Instrument: AADI Oxygen Optode 3830

Period: October 05, 2009 - March 15, 2010

Purpose: The sensor is used to monitor the oxygen concentration dissolved in sea water and to provide oxygen concentration values needed by the methane sensor calibration formula.

Quality of data: Raw Oxygen data as recorded by the Optode sensor from 5 October 2009 until 15 March 2010. The data set is continuous with few gaps (0.048% samples lost). The concentration values are not corrected for sea salinity. True concentration values needs post processing elaboration using salinity data [see Optode manual]. The temperature channel measures the device temperature.

CTD dataset (SBE 16plus @ 1 sample / 10 min) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.

2011-10-28T19:26:00+00:00

Area: Marmara Sea

Instrument: SeaBird SBE 16plus

Period: October 05, 2009 - March 15, 2010

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data acquired by a SBE 16 plus device installed on SN4 station.

Quality of data: The Conductivity, Temperature and Pressure are data acquired by the CTD at each minutes 08,18,28,38,48,58 of every hour of the mission.

Turbidity meter dataset (ECO-NTU(RT)D 6000m @ 1 sample / 10 min) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.

2011-10-28T19:27:00+00:00

Area: Marmara Sea

Instrument: Wet Labs ECO-NTU(RT)D 6000m

Period: October 05, 2009 - March 15, 2010

Abstract: The dataset provides the turbidity in the sea water measured by a backscattering meter.

Purpose: Monitor the change in turbidity of sea water.

Quality of data: Turbidity data are produced at each minutes 08,18,28,38,48,58 of every hour, then they are acquired and stored by the CTD device. Data are supplied in mV as acquired by the CTD device, and in Nephelometric Turbidity Unit [NTU] using the device calibration formula.

Current meter dataset (Nobska MAVS-3 @ 5 Hz) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.

2011-10-28T00:00:00+00:00

Area: Marmara Sea

Instrument: Nobska MAVS-3 3 axis acoustic current meter

Period: October 05, 2009 - March 13, 2010

Abstract: High-frequency current meter provides punctual sea current measurements.

Quality of data: Current meter data are available only for three period: 5-14 October 2009, 14-23 February 2010, 4-13 March 2010.

Current meter dataset (Nobska MAVS-3 @ 5 Hz) from INGV/GEOSTAR seafloor platform during NEAREST project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2013-02-13T11:12:00+00:00

Area: Gulf of Cadiz

Instrument: Nobska MAVS-3 3 axis acoustic current meter

Period: August 26, 2007 - July 16, 2008

Purpose: The high sampling rate (5Hz) was used in order to better observe possible influences of seawater currents on seismological data.

Quality of data: More than 10GB of data were collected during one year of measurements. The record is periodically affected by the lack of few seconds of data. On the whole, about the 95% of data were well recorded.

Gravimeter dataset (IFSI (INAF) Prototype #2 @ 1 Hz) from INGV/GEOSTAR seafloor platform during NEAREST project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2010-12-02T18:11:00+00:00

Area: Gulf of Cadiz

Instrument: IFSI (INAF) Prototype #2

Period: August 26, 2007 - July 16, 2008

Purpose: The instrument performs measurements of the Earth gravity acceleration due to low ground movements (tides) and fast ground movements (seismic wave propagation).

Quality of data: The gravimeter acquired from August 27, 2007 to August 15, 2008 with a break of acquisition from 18/07/2008 to 15/08/2008 and 12 hours among 17-18/10/2007. The data are stored in a total of 326 daily binary files (~220 MB). The gravity meter has successfully recorded different teleseismic events with an high S/N ratio.

CTD dataset (SBE 16plus @ 1 sample / hour) from INGV/GEOSTAR seafloor platform during NEAREST project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-22T11:01:00+00:00

Area: Gulf of Cadiz

Instrument: SeaBird SBE 16plus

Period: August 27, 2007 - July 16, 2008

Quality of data: The series is complete and continue through all period of measurement, without gap of data or relevant sensor problem.

Turbidity meter dataset (ECO-BB(RT)D 6000m @ 1 sample / hour) from INGV/GEOSTAR seafloor platform during NEAREST project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-06-22T11:01:00+00:00

Area: Gulf of Cadiz

Instrument: Wet Labs ECO-BB(RT)D 6000m

Period: August 27, 2007 - July 16, 2008

Quality of data: The series is complete and continue through all period of measurement, without gap of data or relevant sensor problem.

ADCP dataset (RDI WorkHorse 300 kHz @ 1 profile / hour) from INGV/GEOSTAR seafloor platform during NEAREST project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2010-11-29T10:30:00+00:00

Area: Gulf of Cadiz

Instrument: Teledyne RDI WorkHorse Sentinel ADCP 300 kHz

Period: September 01, 2007 - July 15, 2008

Quality of data: The record series is complete and continue through all period of measurement.

Seismometer dataset (Guralp CMG-40T @ 100 Hz) from INGV/GEOSTAR seafloor platform during NEAREST project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2010-12-03T11:53:00+00:00

Area: Gulf of Cadiz

Instrument: Guralp CMG-40T 3 component broadband seismometer (30 s-50 Hz)

Period: August 26, 2007 - July 14, 2008

Abstract: This digital database comprises seismological data recorded during the EC NEAREST project by a 3 component broadband seismometer. The sensor was installed on the GEOSTAR deep-sea multidisciplinary observatory, in the Gulf of Cadiz (Portugal). In the same vessel together with the seismometer there was an accelerometer. Both sensors were connected to a 24 bit digitizer, and their time reference came from an external rubidium clock connected to the digitizer.

Purpose: The seismometer was part of a prototype of tsunami early warning system together with a pressure meter on board GEOSTAR. Also, the sensor was used together with the other 25 OBS deployed in the NEAREAST experiment, to better define the local seismic sources and tectonic structures.

Quality of data: The data series is complete for all working sensors (see problems below), 95 % of expected bytes has been recorded. Strong long period disturbance on seismometer and accelerometer channels due to continuous re-centring of levelling platform (144 s recurrence period) due to Guralp electronics.

Hydrophone dataset (OAS E-2PD @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-06-23T14:04:00+00:00

Area: East Sicily

Instrument: OAS E-2PD

Period: January 25, 2005 - April 30, 2008

Abstract: This digital database comprises data recorded from the hydrophone during the GNDT 2 project. The hydrophone was installed on the frame of the GEOSTAR deep-sea multidisciplinary observatory, deployed offshore of the Eastern coast of Sicily (Southern Italy) at a depth of 2065 m.The sensor was connected to a 24 bit digitizer, and its time reference came from an external rubidium clock connected to the digitizer, and synchronized with the seismometer.

Purpose: As this site is of great interest given its proximity to the Etna volcano (~ 50 km) and to important offshore seismogenic structures, the main purpose of the hydrophone is to record seismic data in combination with the seismometer.

Quality of data:

Seismometer dataset (Guralp CMG-1T @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-06-21T19:41:00+00:00

Area: East Sicily

Instrument: Guralp CMG-1T 3 component broadband seismometer (360 s-50 Hz)

Period: January 25, 2005 - April 30, 2008

Abstract: This digital database comprises seismological data recorded during the GNDT 2 project by a 3 component broadband seismometer, together with a hydrophone. The sensor was installed on the GEOSTAR deep-sea multidisciplinary observatory, offshore of the Eastern coast of Sicily (Southern Italy) at a depth of 2065 m. The seismometer is installed in a dedicated vessel integrated in a separate structure connected to the observatory via a special mechanical release. To guarantee a good coupling with the sea bottom, the structure is disconnected just after the observatory touch-down and kept linked to the frame by a slack rope (Favali et al., 2006). The sensor was connected to a 24 bit digitizer, and its time reference came from an external rubidium clock connected to the digitizer.

Purpose: This project is a continuation of GNDT 1 where the main objective was to establish a multiparameter seafloor observatory off-shore eastern Sicily. Long-term broad-band seismic measurements from this site is of great interest given its proximity to the Etna volcano (~ 50 km) and to offshore seismogenic structures where some of the most destructive earthquakes, some of which accompanied by tsunamis, have occurred in Italy.

Quality of data:

Current meter dataset (FSI 3D-ACM @ 2 Hz) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-11-30T15:10:00+00:00

Area: East Sicily

Instrument: Falmouth 3D-ACM 3 axis acoustic current meter

Period: September 20, 2005 - April 20, 2008

Abstract: TBD

Purpose:

Quality of data:

Gravimeter dataset (IFSI (INAF) Prototype #1 @ 1 Hz) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-06-27T12:45:00+00:00

Area: East Sicily

Instrument: IFSI (INAF) Prototype #1

Period: September 21, 2005 - April 20, 2008

Purpose: In a multidisciplinary approach the continuous gravimetric measurements with other available data could help to better understand the dynamics of Etna volcanic system.

Quality of data: The gravimeter acquired with a sampling rate of 1 Hz. The mission has some data gaps. When gravimetric data are available, they are of good quality in S/N sense.

CTD dataset (SBE 37-SM @ 1 sample / 10 min) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-11-30T15:03:00+00:00

Area: East Sicily

Instrument: SeaBird SBE 37-SM

Period: September 20, 2005 - April 20, 2008

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired through a SBE 37-SM installed on SN-1 station. The collection period ranges from January 2005 through April 2008.

Purpose: CTD has been used in order to monitoring possible variations of bottom sea water masses in the area.

Quality of data:

Pressure gauge dataset (Paroscientific 8CB-4000-I @ 1 sample / 15 sec) from INGV/GEOSTAR seafloor platform during NEAREST project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.

2011-07-14T15:56:00+00:00

Area: Gulf of Cadiz

Instrument: Paroscientific Digiquartz Depth Sensor 8CB-4000-I

Period: August 26, 2007 - April 06, 2008

Quality of data: Pressure data were recorded from 25 August 2007 until 6 April 2008. The record presents one gap of around 10 hours the day 18 October 2007 when the acquisition was stopped due to maintenance operation on the GEOSTAR site. In the remaining period the data recorded are the 99.8 % of the expected samples.

CTD dataset (SBE 16 @ 1 sample / hour) from INGV/SN-2 seafloor platform during MABEL project in Weddell Sea site (Weddell Sea), part of PNRA network.

2013-10-22T12:33:00+00:00

Area: Weddell Sea

Instrument: SeaBird SBE 16

Period: December 06, 2005 - December 31, 2006

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired by SBE 16 SEACAT.

Purpose: CTD is used in order to monitor possible variations of bottom sea water masses in an area interested by the mixing of different water masses.

Quality of data: The series is complete and continue through all period of measurement, without gap of data or relevant sensor problem.

Seismometer dataset (PMD - EENTEC EP300-DT @ 100 Hz) from INGV/SN-2 seafloor platform during MABEL project in Weddell Sea site (Weddell Sea), part of PNRA network.

2013-10-22T12:36:00+00:00

Area: Weddell Sea

Instrument: PMD Scientific Inc - EENTEC EP300-DT

Period: December 06, 2005 - December 31, 2006

Abstract: TBD

Purpose:

Quality of data:

Transmissometer dataset (Ctg Alphatracka II @ 1 sample / hour) from INGV/SN-2 seafloor platform during MABEL project in Weddell Sea site (Weddell Sea), part of PNRA network.

2013-10-22T12:38:00+00:00

Area: Weddell Sea

Instrument: Chelsea Technologies Group Alphatracka II

Period: December 06, 2005 - December 31, 2006

Abstract: Alphatracka MKII is a transmissometer monitors the total suspended matter in water by measuring the beam attenuation coefficient alfa at 660 nm.

Purpose: Transmissometer provides information about possible suspension of particle matter due to bottom currents.

Quality of data: The time-series is complete and continue through all period of measurement, without gap of data or relevant sensor problem.

CTD dataset (SBE 16 @ 1 sample / hour) from INGV/GEOSTAR - SN-3 seafloor platform during ORION-GEOSTAR3 project in Southern Tyrrhenian Sea site (Marsili Basin), part of ORION network.

2021-10-21T12:57:43+00:00

Area: Marsili Basin

Instrument: SeaBird SBE 16

Period: June 13, 2004 - April 04, 2005

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired through a SBE 16 installed on GEOSTAR - SN-3 station.

Purpose: CTD is used in order to monitoring possible variations of bottom sea water masses in the area.

Quality of data:

Current meter dataset (FSI 3D-ACM @ 2 Hz) from INGV/GEOSTAR - SN-3 seafloor platform during ORION-GEOSTAR3 project in Southern Tyrrhenian Sea site (Marsili Basin), part of ORION network.

2022-02-05T12:00:00+00:00

Area: Marsili Basin

Instrument: Falmouth 3D-ACM 3 axis acoustic current meter

Period: June 13, 2004 - April 04, 2005

Abstract: Falmouth 3D-ACM 3 axis acoustic current meter, a high-accuracy meter with vector-averaged current speed and direction.

Purpose: The high sampling rate (2Hz) was used in order to better observe possible influences of seawater currents on seismological data.

Quality of data:

Transmissometer dataset (Ctg Alphatracka II @ 1 sample / hour) from INGV/GEOSTAR - SN-3 seafloor platform during ORION-GEOSTAR3 project in Southern Tyrrhenian Sea site (Marsili Basin), part of ORION network.

2022-01-14T12:57:43+00:00

Area: Marsili Basin

Instrument: Chelsea Technologies Group Alphatracka II

Period: June 13, 2004 - April 04, 2005

Abstract: Alphatracka II is a transmissometer that measures the beam attenuation coefficient at 660 nm.

Purpose: Purpose - WORK IN PROGRESS

Quality of data:

ADCP dataset (RDI WorkHorse 300 kHz @ 1 profile / hour) from INGV/GEOSTAR - SN-3 seafloor platform during ORION-GEOSTAR3 project in Southern Tyrrhenian Sea site (Marsili Basin), part of ORION network.

2004-06-14T00:24:21+00:00

Area: Marsili Basin

Instrument: Teledyne RDI WorkHorse Sentinel ADCP 300 kHz

Period: June 14, 2004 - April 03, 2005

Purpose:

Quality of data:

ADCP dataset (RDI WorkHorse 300 kHz @ 1 sample / hour) from INGV/GEOSTAR - SN-3 seafloor platform during ORION-GEOSTAR3 project in Southern Tyrrhenian Sea site (Marsili Basin), part of ORION network.

2022-01-28T12:57:43+00:00

Area: Marsili Basin

Instrument: Teledyne RDI WorkHorse Sentinel ADCP 300 kHz

Period: December 14, 2003 - April 24, 2004

Purpose:

Quality of data:

CTD dataset (SBE 16 @ 1 sample / hour) from INGV/GEOSTAR - SN-3 seafloor platform during ORION-GEOSTAR3 project in Southern Tyrrhenian Sea site (Marsili Basin), part of ORION network.

2003-12-14T00:00:00+00:00

Area: Marsili Basin

Instrument: SeaBird SBE 16

Period: December 14, 2003 - April 24, 2004

Abstract: The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired through a SBE 16 installed on GEOSTAR - SN-3 station.

Purpose: CTD is used in order to monitoring possible variations of bottom sea water masses in the area.

Quality of data:

Transmissometer dataset (Ctg Alphatracka II @ 1 sample / hour) from INGV/GEOSTAR - SN-3 seafloor platform during ORION-GEOSTAR3 project in Southern Tyrrhenian Sea site (Marsili Basin), part of ORION network.

2022-01-28T12:57:43+00:00

Area: Marsili Basin

Instrument: Chelsea Technologies Group Alphatracka II

Period: December 14, 2003 - April 24, 2004

Abstract: Alphatracka II is a transmissometer that measures the beam attenuation coefficient at 660 nm.

Purpose:

Quality of data:

Current meter dataset (FSI 3D-ACM @ 2 Hz) from INGV/GEOSTAR - SN-3 seafloor platform during ORION-GEOSTAR3 project in Southern Tyrrhenian Sea site (Marsili Basin), part of ORION network.

2022-02-05T12:00:00+00:00

Area: Marsili Basin

Instrument: Falmouth 3D-ACM 3 axis acoustic current meter

Period: December 14, 2003 - April 24, 2004

Abstract: Falmouth 3D-ACM 3 axis acoustic current meter, a high-accuracy meter with vector-averaged current speed and direction.

Purpose: The high sampling rate (2Hz) was used in order to better observe possible influences of seawater currents on seismological data.

Quality of data:

Hydrophone dataset (OAS E-2PD @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-10-12T19:54:00+00:00

Area: East Sicily

Instrument: OAS E-2PD

Period: October 09, 2002 - May 12, 2003

Abstract: This digital database comprises data recorded from the hydrophone during the GNDT 1 project. The hydrophone was installed on the frame of the GEOSTAR deep-sea multidisciplinary observatory, deployed offshore of the Eastern coast of Sicily (Southern Italy) at a depth of 2071 m.The sensor was connected to a 24 bit digitizer, and its time reference came from an external rubidium clock connected to the digitizer, and synchronized with the seismometer.

Quality of data:

Seismometer dataset (Guralp CMG-1T @ 100 Hz) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-10-12T19:56:00+00:00

Area: East Sicily

Instrument: Guralp CMG-1T 3 component broadband seismometer (360 s-50 Hz)

Period: October 09, 2002 - May 12, 2003

Abstract: This digital database comprises seismological data recorded during the GNDT 1 project by a 3 component broadband seismometer, together with a hydrophone. The sensor was installed on the GEOSTAR deep-sea multidisciplinary observatory, offshore of the Eastern coast of Sicily (Southern Italy) at a depth of 2071 m. The seismometer is installed in a dedicated vessel integrated in a separate structure connected to the observatory via a special mechanical release. To guarantee a good coupling with the sea bottom, the structure is disconnected just after the observatory touch-down and kept linked to the frame by a slack rope (Favali et al., 2006). The sensor was connected to a 24 bit digitizer, and its time reference came from an external rubidium clock connected to the digitizer.

Purpose: This project's main objective was to establish the first node, off-shore eastern Sicily, of multiparameter seafloor observatories which include a seismometer. Long-term broad-band seismic measurements from this site is of great interest given its proximity to the Etna volcano (~ 50 km) and to offshore seismogenic structures where some of the most destructive earthquakes, some of which accompanied by tsunamis, have occurred in Italy.

Quality of data:

CTD dataset (SBE 37-SM @ 1 sample / 12 min) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-10-12T19:39:00+00:00

Area: East Sicily

Instrument: SeaBird SBE 37-SM

Period: October 09, 2002 - February 20, 2003

Purpose: CTD has been used in order to monitoring possible variations of bottom sea water masses in the area.

Quality of data: The sensor pressure shows anomalous trend although tidal oscillations are correct. The probe was changed for the next SN1 campaigns

Gravimeter dataset (IFSI (INAF) Prototype #1 @ 1 Hz) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-10-12T19:52:00+00:00

Area: East Sicily

Instrument: IFSI (INAF) Prototype #1

Period: October 10, 2002 - February 20, 2003

Abstract: A prototype of gravity meter built at the Istituto di Fisica dello Spazio Interplanetario (IFSI) of the National Institute of Astro-Physics (INAF) was installed on the SN1 deep-sea multidisciplinary observatory, offshore of the Eastern coast of Sicily. The gravity meter provides measurements of variation of the vertical component of the acceleration with respect to an initial reference value.

Purpose: The comparison between seismic signal with the continuous gravimetric measurement can help to characterise different styles of the Etna volcanic activity.

Quality of data: The gravity meter acquires one sample per second in continuous mode. The data show a good signal to noise ratio (S/N).

Current meter dataset (FSI 3D-ACM @ 2 Hz) from INGV/NEMO-SN1 seafloor platform during GNDT-SN1 project in Western Ionian Sea site (East Sicily), part of EMSO network.

2011-10-12T19:49:00+00:00

Area: East Sicily

Instrument: Falmouth 3D-ACM 3 axis acoustic current meter

Period: October 09, 2002 - February 18, 2003

Abstract: Falmouth 3D-ACM 3 axis acoustic current meter, a high-accuracy meter with vector-averaged current speed and direction.

Purpose:

Quality of data: