Project LOKI: DEPAS ocean-bottom seismometer operations at Loki's Castle vent field in 2019-2020 ...

• Main Authors: Barreyre, Thibaut, Ottemöller, Lars, Schlindwein, Vera, Pedersen, Rolf B, Schmidt-Aursch, Mechita
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Event label; Project; Principal investigator; Code; Station label; Date/time start; LATITUDE; LONGITUDE; ELEVATION; Date/time end; Clock skew; Recorder type; Recorder, serial number; Seismometer type; Seismometer, serial number; Seismometer gain; Hydrophone type; Hydrophone, serial number; Hydrophone gain; Hydrophone polarity; Sampling rate; Cruise/expedition; Comment; Binary Object; Ocean bottom seismometer; Loki Castle Hydrothermal in-situ Experiments and Seismology Surveys LoCHnESs; Bergen; Greenland; Knipovich Ridge; Greenland Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.957222; https://doi.pangaea.de/10.1594/PANGAEA.957222

This ocean-bottom seismometer deployment is part of the LoCHnESs (Loki Castle Hydrothermal iN-situ Experiements 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) ...