Plaza-Faverola, Andreia; Domel, Przemyslaw; Bünz, Stefan; Schmidt-Aursch, Mechita; Schlindwein, Vera (2022): Project SEAMSTRESS: DEPAS ocean-bottom seismometer operations on Vestnesa Ridge in 2020-2021 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.952424
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Abstract:
This ocean-bottom seismometer deployment is part of the SEAMSTRESS project examining tectonic stress effects on Arctic methane seepage. The project is led by PI Andreia Plaza-Faverola at the Centre for Arctic Gas Hydrates, University of Tromsö, Norway.
A total of 10 ocean bottom seismometers (OBS) were deployed on Vestnesa Ridge, a sediment drift body just north Knipovich Ridge at its intersection with the Molloy Transform fault (cruise CAGE-20-5). The aim of the experiment was to look for stress release along faults that control seepage sites on Vestnesa Ridge. The network consisted of 8 Lobster type broadband OBS from the German Instrument Pool for Amphibian Seismology (DEPAS) and 2 3C geophones provided by the University of Tromsö. Instruments were free-fall deployed and spaced by about 10 km. They recorded continuously at 100 Hz for 11 months between August 2020 and July 2021.
Short, intersecting refraction profiles were shot across all OBS stations, such that OBS positions at the seafloor could be determined within 10 m (cruise CAGE-21-3). Clock drift in this experiment was nonlinear and skew values were only obtained for 6 of the stations. Skew-corrected station VSN01 served as reference station to obtain the clock drift of all other stations using noise cross-correlation and subsequently correct also for the thus determined nonlinearity of time drift.
Related to:
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung; et al. (2017): DEPAS (Deutscher Geräte-Pool für amphibische Seismologie): German Instrument Pool for Amphibian Seismology. Journal of large-scale research facilities JLSRF, 3, https://doi.org/10.17815/jlsrf-3-165
Bünz, Stefan (2023): CAGE20-5 Cruise Report: Tectonic stress studies and seismic surveys on the West-Svalbard margin. CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, 8, https://doi.org/10.7557/cage.6914
Plaza-Faverola, Andreia; Schlindwein, Vera; Domel, Przemyslaw; Schmidt-Aursch, Mechita; Cooke, Frances Ann; Holm, Truls; Jensen, Stormer A (2022): CAGE21-3 Cruise Report: Ocean bottom seismics and acoustic surveys on the West-Svalbard margin – a study of local seismicity and its effect on methane seepage. CAGE – Centre for Arctic Gas Hydrate, Environment and Climate Report Series, 9, https://doi.org/10.7557/cage.6722
Project(s):
Funding:
The Research Council of Norway (RCN), grant/award no. 223259: Centre for Arctic Gas Hydrate, Environment and Climate (CAGE)
Coverage:
Median Latitude: 78.789040 * Median Longitude: 6.972750 * South-bound Latitude: 78.654800 * West-bound Longitude: 6.448800 * North-bound Latitude: 78.916200 * East-bound Longitude: 7.474200
Date/Time Start: 2020-08-22T16:29:00 * Date/Time End: 2021-07-14T07:58:00
Minimum ELEVATION: -1964 m a.s.l. * Maximum ELEVATION: -1164 m a.s.l.
Event(s):
Y9_VSN01 * Latitude: 78.868700 * Longitude: 6.448800 * Date/Time Start: 2020-08-22T16:29:00 * Date/Time End: 2021-07-13T12:09:00 * Elevation: -1964.0 m * Location: Vestnesa Ridge * Method/Device: Ocean bottom seismometer (OBS)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Schlindwein, Vera | |||
| 2 | Project | Project | Schlindwein, Vera | |||
| 3 | Principal investigator | PI | Schlindwein, Vera | |||
| 4 | Code | Code | Schlindwein, Vera | FDSN Network Code | ||
| 5 | Station label | Station | Schlindwein, Vera | |||
| 6 | Date/time start | Date/time start | Schlindwein, Vera | Synchronisation | ||
| 7 | Date/time start | Date/time start | Schlindwein, Vera | Recording | ||
| 8 | Date/time start | Date/time start | Schlindwein, Vera | Deployment | ||
| 9 | LATITUDE | Latitude | Schlindwein, Vera | Geocode | ||
| 10 | LONGITUDE | Longitude | Schlindwein, Vera | Geocode | ||
| 11 | ELEVATION | Elevation | m a.s.l. | Schlindwein, Vera | Geocode | |
| 12 | Date/time end | Date/time end | Schlindwein, Vera | Recovery | ||
| 13 | Date/time end | Date/time end | Schlindwein, Vera | Recording | ||
| 14 | Date/time end | Date/time end | Schlindwein, Vera | Synchronisation | ||
| 15 | Clock skew | Skew | µs | Schlindwein, Vera | ||
| 16 | Recorder type | Recorder | Schlindwein, Vera | |||
| 17 | Recorder, serial number | Recorder SN | Schlindwein, Vera | |||
| 18 | Seismometer type | Seismometer | Schlindwein, Vera | |||
| 19 | Seismometer, serial number | Seismometer SN | Schlindwein, Vera | |||
| 20 | Seismometer gain | Seismometer gain | Schlindwein, Vera | |||
| 21 | Hydrophone type | Hydrophone | Schlindwein, Vera | |||
| 22 | Hydrophone, serial number | Hydrophone SN | Schlindwein, Vera | |||
| 23 | Hydrophone gain | Hydrophone gain | Schlindwein, Vera | |||
| 24 | Hydrophone polarity | Hydrophone pol | Schlindwein, Vera | |||
| 25 | Sampling rate | Sampling rate | Hz | Schlindwein, Vera | ||
| 26 | Cruise/expedition | Expedition | Schlindwein, Vera | |||
| 27 | Comment | Comment | Schlindwein, Vera | |||
| 28 | Binary Object | Binary | Schlindwein, Vera | Auxiliary data) | ||
| 29 | Binary Object | Binary | Schlindwein, Vera | Log file | ||
| 30 | Binary Object | Binary | Schlindwein, Vera | Raw data | ||
| 31 | Binary Object | Binary | Schlindwein, Vera | Seismometer state of health |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
254 data points