2026-08-04T12:34:22Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:73982025-06-13T14:42:01ZDOIDBDOIDB.SEISNET

false4DOIDB.SEISNET 10.14470/3S7563492742 Schlindwein, Vera 0000-0001-5570-2753 Alfred Wegener Institute for Polar and Marine Research Kirk, Henning Alfred Wegener Institute for Polar and Marine Research Hiller, Marc Alfred Wegener Institute for Polar and Marine Research Scholz, John-Robert 0000-0003-1404-2335 Alfred Wegener Institute for Polar and Marine Research Schmidt-Aursch, Mechita 0000-0002-2393-4514 Alfred Wegener Institute for Polar and Marine Research GFZ Data Services 2022 Deutsches GeoForschungsZentrum GFZ GEOFON Data Centre geofon@gfz.de Alfred Wegener Institute (AWI), Bremerhaven, Germany EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS Instruments > In Situ/Laboratory Instruments > Magnetic/Motion Sensors > Seismometers Instruments > In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > HYDROPHONES In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS OBS DEPAS Pool Passive seismic Local network Temporary Velocity Hydrophones Seismometers MiniSEED Geophysics 2018-01-01 2022-01-01 2022-06-29 2025-06-01 en Seismic Network embargoed access Creative Commons Attribution 4.0 International 10.17815/jlsrf-3-165 https://geofon.gfz.de/waveform/archive/response/8F/2018_2019 https://obsinfo.readthedocs.io/en/master/ https://www.ipgp.fr/~crawford/Documents/OBS_data_standards.pdf 10.26443/seismica.v4i1.1381 10.1093/gji/ggaf143 298GB .mseed XML “Gakkel Deep is a pilot project that installed a network of four broadband ocean bottom seismometers (OBS) near Gakkel Deep, the deepest depression in the Arctic Ocean, at the eastern end of the ultraslow spreading Gakkel Ridge. The area is covered year-round by sea ice. In order to enable a safe recovery of the OBS in a sea ice covered ocean, the OBS were modified to include a positioning system that allows to track the instruments at meter accuracy during descent and ascent and when stuck beneath ice floes. This pilot studied aimed at testing the recovery procedure of the OBS, checking the performance of the modified instrument design, getting an overview of ambient seismic noise at the bottom of the Arctic Ocean and at contributing to a better understanding of the origin of the Gakkel Deep depression with more than 3000 m of topography. The network is shaped as a rectangle with 8 km and 10 km side length and is centered at about 82°N 119.5°E at water depths between 3600 m and 4100 m. It is positioned slightly to the east of the present plate boundary in an area with volcanic structures. Instruments from the German Instrument Pool of Amphibian Seismology (DEPAS) were deployed during RV Polarstern cruise PS115/2 on September 15, 2018. Instrument recovery was completed during RV Polarstern cruise PS122/1 on September 27, 2019. The data set contains about 377 days of continuous records at 250 Hz sample rate. The station locations were determined with Ultra Short Baseline (USBL) ranging, the accuracy is approx. 10 m. The non-linear clock drift was determined by means of noise cross-correlations and applied to the data set. Waveform data are available from the GEOFON data centre. 119.0 120.0 81.0 83.0 Gakkel Ridge Arctic Ocean Alfred Wegener Institute (AWI), Bremerhaven, Germany https://doi.org/10.13039/501100003207