Project BRAVOSEIS: DEPAS ocean-bottom seismometer operations in the Bransfield Strait in 2019-2020

BRAVOSEIS (Bransfield Volcano Seismology) is an interdisciplinary project exploring volcanism in the Bransfield back-arc basin, Antarctica. Partners from Spain (amongst others UGR, project leader), Germany (AWI, GFZ) and the US (CUNY, UW, WHOI) performed various geophysical onshore and offshore meas...

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Bibliographic Details
Main Authors: Schmidt-Aursch, Mechita, Almendros, Javier, Geissler, Wolfram H
Format: Dataset
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2021
Subjects:
Bransfield Strait
DEPAS
ocean-bottom seismometer
Passive seismology
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
Marine Geophysics @ AWI AWI_GeoPhy
Antarctic
Orca Seamount
Sarmiento
The Antarctic
Antarc*
Antarctica
Orca
Online Access:https://dx.doi.org/10.1594/pangaea.934130
https://doi.pangaea.de/10.1594/PANGAEA.934130
Description
Summary:BRAVOSEIS (Bransfield Volcano Seismology) is an interdisciplinary project exploring volcanism in the Bransfield back-arc basin, Antarctica. Partners from Spain (amongst others UGR, project leader), Germany (AWI, GFZ) and the US (CUNY, UW, WHOI) performed various geophysical onshore and offshore measurements in the Antarctic seasons 2017-2018, 2018-2019 and 2019-2020. A key element of the project was the operation of a large long-term amphibious network of broadband seismometer in the Bransfield Strait, on the adjoining South Sheltland Islands, and on the Antarctic Peninsula.Nine broadband coean-bottom seismometer (OBS) from the German Instrument Pool of Amphibian Seismology (DEPAS) were deployed as part of this network with RV Sarmiento de Gamboa in January 2019 (cruise SDG076). They were distributed along the entire basin, one station supplemented a dense array of short-period OBS around the Orca seamount. Eight instruments could be recovered in February 2020 with RV Hespérides (cruise HE0188), one OBS is still missing. All stations recorded data for the full deployment period. Unfortunately, the clock drift of all stations turned out to be non-linear, a skew measurement was possible for four stations only.

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