urn:ieda:metadata:for:doi:10.14470/9I763612 eng dataset Seismic Network Interdisciplinary Earth Data Alliance | Lamont Doherty Earth Observatory | Columbia Univeristy info@EarthChem.org http://www.earthchem.org/sites/earthchem.org/files/arthemia_logo.jpg logo graphic pointOfContact ISO 19139 Geographic Information - Metadata - Implementation Specification 2007 urn:ogc:def:crs:EPSG:4326 ALOIS: DEPAS ocean-bottom seismometer operations at the western Gakkel Ridge / Lena Trough in 2022-2023 2025-08-21 creation 2025 publication doi:10.14470/9I763612 Schlindwein, Vera Alfred Wegener Institute for Polar and Marine Research missing@unknown.org http://orcid.org/https://orcid.org/0000-0001-5570-2753 ORCID author Pilot, Matthias Alfred Wegener Institute for Polar and Marine Research missing@unknown.org http://orcid.org/https://orcid.org/0000-0003-1704-5443 ORCID author Schmidt-Aursch, Mechita Alfred Wegener Institute for Polar and Marine Research missing@unknown.org http://orcid.org/https://orcid.org/0000-0002-2393-4514 ORCID author Deutsches GeoForschungsZentrum GFZ HostingInstitution missing@unknown.org distributor GEOFON Data Centre DataManager missing@unknown.org custodian geofon@gfz.de ContactPerson missing@unknown.org pointOfContact Alfred Wegener Institute (AWI), Bremerhaven, Germany ProjectLeader missing@unknown.org collaborator GFZ Data Services missing@unknown.org publisher Abstract: This ocean-bottom seismometer deployment is part of an interdisciplinary project examining the Aurora hydrothermal vent field in an attempt to understand its fluid circulation. A total of 8 ocean bottom seismometers modified for the operation in sea ice covered oceans was deployed around Aurora vent field at the intersection of Gakkel Ridge and Lena Trough in the Fram Strait. The aim of the experiment was to monitor seismicity related to the hydrothermal circulation system and to reveal potentially heat reservoirs devoid of seismicity. The network consisted of 8 DEPAS Lobster type broadband OBS. Instruments were free-fall deployed and spaced by about 5-8 km. Their position at the seafloor is known to within few meters from ultrashort baseline positioning system Posidonia. The OBS recorded continuously at 100 Hz for up to 12 months between end of July 2022 and mid July 2023. One instrument (AUR02) had an unreliable seismometer records due to levelling problems. Skew values were obtained for all stations and ranged between -18 s and 12.3 s. Clock drift in this experiment was partially nonlinear. After the skew correction, a nonlinear time drift for stations AUR02, AUR04, AUR06, AUR08 was determined using noise cross-correlation. A best-fit correction was obtained by using skew-corrected station AUR01 as reference station for stations AUR04 and AUR08, while skew-corrected station AUR03 served as reference for stations AUR02 and AUR06. Station specific phase residuals obtained from a manually picked catalog of 492 events were used to further validate the clock drift corrections. For AUR04 a nonlinear phase residual drift was observed and, subsequently, the applied drift polynomial was manually adjusted to minimize resulting residuals. Waveform data are available from the GEOFON data centre under network code 4V. funderName:Alfred Wegener Institute (AWI), Bremerhaven, Germany funderIdentifier:https://ror.org/032e6b942; IDType:ROR awardNumber:AWI_PS131_03 and AWI_PS137_02 Complete geofon@gfz.de ContactPerson missing@unknown.org pointOfContact .mseed EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES NASA/GCMD Earth Science Keywords publication EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS NASA/GCMD Earth Science Keywords publication Instruments > In Situ/Laboratory Instruments > Magnetic/Motion Sensors > Seismometers GCMD Instruments publication Instruments > In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > HYDROPHONES GCMD Instruments publication In Situ Land-based Platforms > GEOPHYSICAL STATIONS/NETWORKS GCMD Platforms publication OBS SeisData publication DEPAS Pool SeisData publication Passive seismic SeisData publication Local network SeisData publication Temporary SeisData publication Velocity SeisData publication Hydrophones SeisData publication Seismometers SeisData publication MiniSEED SeisData publication Geophysics SeisData publication FOS: Earth and related environmental sciences Fields of Science and Technology (FOS) publication embargoed access embargoed access 10.17815/jlsrf-3-165 DOI IsDocumentedBy https://geofon.gfz.de/waveform/archive/response/4V/2022_2023 URL HasMetadata https://obsinfo.readthedocs.io/en/master/ URL IsCompiledBy https://www.ipgp.fr/~crawford/Documents/OBS_data_standards.pdf URL IsDescribedBy 10.57738/bzpm_0770_2023 DOI IsCitedBy 10.57738/bzpm_0781_2023 DOI IsCitedBy eng -7 -5.5 82 83 Gakkel Ridge 2022-07-24 2023-07-23 243000000000 http://dx.doi.org/10.14470/9I763612 WWW:LINK-1.0-http--link Landing Page Link to DOI landing page or data facility landing page if no DOI is assigned. information This metadata record was generated by an xslt transformation from a DataCite metadata record; The originator of the dataCite record should be cited in the metadataContact field of this record. The transform was created by Damian Ulbricht and Stephen M. Richard. Run on 2026-06-14 Stephen M. Richard info@iedadata.org processor