GNDT 1 - Seismometer dataset
Guralp CMG-1T 3 component broadband seismometer (360 s-50 Hz)
Stephen Monna (INGV)
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:
|period||October 09, 2002 - May 12, 2003|
|coordinates||37.442217 N, 15.393117 E (WGS84)|
|sampling rate||100 Hz|
|platform type||Fixed benthic node|
|license||Creative Commons Attribution 4.0 International License (CC BY 4.0)|
|science keywords||SOLID EARTH > SEISMOLOGY > EARTHQUAKE DYNAMICS
SOLID EARTH > SEISMOLOGY > EARTHQUAKE OCCURRENCES
|xml||ATOM - DIF - KML - OAI DublinCore - PANGAEA DublinCore - RDF - SensorML|
|dissemination||GENESI-DEC - NASA GCMD - EMSO Data Portal - ESONET Data Portal - ESONET Sensor|