Loki Castle Hydrothermal in-situ Experiments and Seismology Surveys (LoCHnESs)
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- Cite as
- Barreyre, Thibaut; Ottemöller, Lars; Schlindwein, Vera; Pedersen, Rolf B.; Schmidt-Aursch, Mechita (2023): Project LOKI: DEPAS ocean-bottom seismometer operations at Loki's Castle vent field in 2019-2020. GFZ Data Services. Dataset/Seismic Network. doi:10.14470/3Z326135.
- Identifier
- 10.14470/3Z326135
- FDSN network code
- 8M
- DataCite metadata
- HTML | JSON | XML | INSPIRE | Local XML source file
- Terms/rights
- Creative Commons Attribution 4.0 International
Available since 2024-11-28
- Creator(s)
-
Barreyre, Thibaut
a;
Ottemöller, Lars
b;
Schlindwein, Vera
c; Pedersen, Rolf B.
b;
Schmidt-Aursch, Mechita
c
a Institut de physique du globe de Paris, France, b University of Bergen, Norway, c Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany - Description
-
- (Abstract) This ocean-bottom seismometer deployment is part of the LoCHnESs (Loki Castle Hydrothermal iN-situ Experiments and Surveys) project examining hydrothermal fluid circulation at Loki's Castle vent field. The project is led by PI Thibaut Barreyre at the Centre for Deep Sea Research, Department of Earth Science, University of Bergen, Norway. A total of 8 ocean bottom seismometers (OBS) were deployed near Loki's Castle vent field at the Mohns-Knipovich Ridge bend, Norwegian-Greenland Sea. The aim of the experiment was to monitor seismicity related to changes in the hydrothermal circulation system and to reveal interaction between an active detachment fault and the axial volcanic ridge hosting the vent site. The network consisted of 8 DEPAS Lobster type broadband OBS from the German Instrument Pool for Amphibian Seismology (DEPAS). Instruments were free-fall deployed and spaced by about 5-8 km. They recorded continuously at 100 Hz for 12 months between July 2019 and July 2020. Two instruments (LOK01 and LOK06) could only be deployed one month later and recorded at 250 Hz. OBS positions at the seafloor were determined by interpolation at 2/3 of the distance between the deployment and recovery position at the seafloor. Position accuracy is estimated to be about 100 m. Skew values were obtained for all stations and reached values of up to 24 s. Clock drift in this experiment was nonlinear. Skew-corrected station LOK02 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. Waveform data are available from the GEOFON data centre, under network code 8M.
- Title
- Project LOKI: DEPAS ocean-bottom seismometer operations at Loki's Castle vent field in 2019-2020
- Publisher
- GFZ Data Services
- Publication Year
- 2023
- Resource Type
- Dataset / Seismic Network
- Dates
-
- Collected 2019-01-01
- Accepted 2023-01-01
- Created 2023-05-22
- Available 2024-11-28
- Place(s)
-
- Loki Castle
- Contributor(s)
-
- Hosting institution: Deutsches GeoForschungsZentrum GFZ
- Data manager: GEOFON Data Centre
- Project leaders: Institut de physique du globe de Paris, France; Alfred Wegener Institute (AWI), Bremerhaven, Germany; University of Bergen, Norway
- Subjects
- Funding Reference(s)
- Language
- en
- Sizes
-
- 541GB
- Reference(s)
-
- Barreyre, Thibaut; Ottemöller, Lars; Schlindwein, Vera; Pedersen, Rolf B; Schmidt-Aursch, Mechita (2023). Project LOKI: DEPAS ocean-bottom seismometer operations at Loki's Castle vent field in 2019-2020. PANGAEA. doi:10.1594/PANGAEA.957222
- Crawford, Wayne (2021). obsinfo. Python standalone application for creating FDSN-standard (StationXML).
- Crawford, Wayne (2019). OBS data/metadata proposal.
- Schmidt-Aursch, Mechita; Haberland, Christian (2017). DEPAS (Deutscher Geräte-Pool für amphibische Seismologie): German Instrument Pool for Amphibian Seismology. Journal of large-scale research facilities JLSRF. doi:10.17815/jlsrf-3-165
- FDSN network code
- 8M
- Network dates
- 2019–2020
- Data time range
- 2019–2020
- Station Count
- 8
- Seismic metadata
- fdsnws-station
- Data centre remark1
- FDSN StationXML description 'Loki Castle Hydrothermal in-situ Experiments and Seismology Surveys (LoCHnESs)' differs from the DataCite title 'Project LOKI: DEPAS ocean-bottom seismometer operations at Loki's Castle vent field in 2019-2020'.
To retrieve waveform data and metadata (including instrument responses) for this and other seismic networks, see here. Network (data set) values are taken from DataCite XML with Metadata Properties version 4.4. Contact us if you are the PI and wish to make changes. Old-style network page for this network here.
Station List for Network Code 8M
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