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Broadband seismic waveforms, Seismic monitoring, temporary local seismic network
Abstract:
IMAGE is a two year seismological experiment realized in Reykjanes Peninsula by Philippe Jousset (GFZ Potsdam), Gylfi P. Hersir (ISOR Iceland). Reykjanes is the south west tip of Iceland, the emergent part of the medio-oceanic Ridge. This area is probe to many earthquakes and is exploited for its high geothermal potential. The deployment is performed to carry out local seismological study, such as seismic tomography (both earthquake based, e.g. Jousset et al., 2016, or ambient noise e.g., Martins et al., 2020). The aim of the seismic experiment is to monitor the seismic activity associated with the rift seismic activity and the seismicity (Blanck et al., 2020) or the induced seismicity. The network comprised 30 onland stations (GIPP) and 24 OBS (Lobsters, DEPAS),. Onland stations were deployed from April 2014 until august 2015 and comprise 20 broadband seismic stations (Nanometrics Trillium Compact 120 s), 10 short-period sensors (Mark sensors 1 Hz) and data loggers (data cube) with acquisition frequency 200 Hz. Sensors were buried 30–40 cm deep in the ground in containers. Data gaps are minimal, just occurred every 3 months when the batteries were exchanged and data downloaded from the cubes. OBS were deployed in August 2014 and recorded for about a year. From this dataset, converted to MSEED using GIPP tools for the onland part, a catalogue of about 2000 earthquakes could be extracted. Waveform data are available from the GEOFON data centre, under network code 4L.
