SN1 TEST - Hydrophone dataset
SMID seismic digital hydrophone prototype DT-405D(V)1
Davide Embriaco (INGV)
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: 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.
|period||May 16, 2018 - December 31, 2019|
|coordinates||37.54765 N, 15.3975 E (WGS84)|
|sampling rate||2 kHz|
|platform type||Fixed benthic node|
|license||Creative Commons Attribution 4.0 International License (CC BY 4.0)|
|science keywords||SOLID EARTH > SEISMOLOGY > EARTHQUAKE OCCURRENCES
SOLID EARTH > SEISMOLOGY > EARTHQUAKE DYNAMICS
OCEANS > OCEAN ACOUSTICS > ACOUSTIC ATTENUATION/TRANSMISSION
OCEANS > OCEAN ACOUSTICS > ACOUSTIC TOMOGRAPHY
OCEANS > OCEAN ACOUSTICS > ACOUSTIC VELOCITY
OCEANS > OCEAN ACOUSTICS > AMBIENT NOISE
|xml||ATOM - DIF - KML - OAI DublinCore - PANGAEA DublinCore - RDF - SensorML|
|dissemination||GENESI-DEC - NASA GCMD - EMSO Data Portal - ESONET Data Portal - ESONET Sensor|