Amphibious passive seismic recordings on and around Muostakh Island (Laptev Sea, Russia) in August/September 2013 - Datasets

• Main Authors: Overduin, Paul, Ryberg, Trond, Kneier, Fabian, Haberland, Christian, Grigoriev, Mikhail
• Format: Dataset
• Language: English
• Published: Deutsches GeoForschungsZentrum GFZ 2015
• Subjects: Seismology; Laptev Sea Russia; Cryosphere; Solid Earth; Permafrost; Laptev Sea; laptev; permafrost
• Online Access: https://dx.doi.org/10.5880/gipp.201315.1; http://dataservices.gfz-potsdam.de/gipp/showshort.php?id=escidoc:1314062

In August and September 2013, 17 shallow ocean bottom seismograph (S-OBS) stations and 8 land stations had been deployed on and around Muostakh Island (Laptev Sea, Russia) for a time period of 24 days. The specifically designed underwater recording equipment consists of a low-power digital recorder, a standard 4.5Hz 3-component geophone, and a battery pack. These components are enclosed in a watertight cylindrical container safe for operation down to 100m water depth. Land stations were also equipped with 4.5 Hz 1C-geophones as well as with batteries. All instruments recorded continuously with 200 samples per second (sps). The stations were deployed along two profiles covering a region of 8km x 8 km. The tilt of the geophone inside the S-OBS influences the sensor characteristics. Since the orientation and tilt at the ocean bottom was unknown, approximately every 24 hours a calibration signal (a sequence of step-functions) was applied to the sensors of the ocean stations. This might be used to recover the actual sensor characteristics (eigenfrequency and damping). The dataset contains 1) a info-folder with a) a README file; b) a file containing the times when calibration signals occurred (format: recorder_ID - date - time); c) the station table (ASCII; recorder_ID - latitude - longitude - (water)depth); d) a map of the region with the locations of the stations; 2) raw CUBE-formatted data; 3) converted mini-seed-formatted data (hourly files).