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: GFZ Data Services 2023
• Subjects: Monitoring system; 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; Passive seismic; Local network; Temporary[g]; Velocity; Hydrophones; Seismometers; MiniSEED; Geophysics; FOS: Earth and related environmental sciences; Bergen; Greenland; Knipovich Ridge; Norway; Greenland Sea
• Online Access: https://dx.doi.org/10.14470/3z326135; https://geofon.gfz-potsdam.de/doi/network/8M/2019

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) ...