Abstract
The German Instrument Pool for Amphibian Seismology (DEPAS) provides the infrastructure for onshore, marine and amphibian seismological experiments. It consists currently of approx. 80 ocean-bottom seismometers (OBS) and 95 onshore seismic stations. Broadband sensors and custom-built data loggers enable a broad range of short- and long-term deployments to study architecture and dynamics of the Earth’s interior. The OBS are operated by the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI); the onshore stations are managed by the Helmholtz Centre Portsdam GFZ German Research Centre for Geosciences. The DEPAS instruments are available upon request for researchers affiliated to German universities or German research institutes within national or international projects. Applications for stations are evaluated by an external steering committee. Data will be stored in national archives and made available to the public after a waiting period.
Highlights
More than 70% of the Earth is covered by oceans and seas hiding submarine structures important for geoscienti c research, natural hazard investigation and resource evaluation
Passive continental margins inherit information about breakup, drift and collision of continents leading to opening and closing of oceanic gateways and changing of the thermohaline circulation
Acoustic and elastic waves spreading out from natural or arti cial sources were recorded by seismic stations
Summary
More than 70% of the Earth is covered by oceans and seas hiding submarine structures important for geoscienti c research, natural hazard investigation and resource evaluation. Passive continental margins inherit information about breakup, drift and collision of continents leading to opening and closing of oceanic gateways and changing of the thermohaline circulation These margins are a major source of organic and mineral deposits; but they carry risks like instable gas hydrates and sub-. Seismology o ers invaluable tools to image these structures and determine their tectonics, either by conducting passive monitoring or by performing active exploration. In both cases, acoustic and elastic waves spreading out from natural (earthquakes, ocean waves) or arti cial sources were recorded by seismic stations. To enable marine and amphibian experiments with homogeneous equipment, the DEPAS instrument pool was established in the year 2005 as a large-scale facility for German seismologists
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