Southwest Indian Ridge Earthquakes and Hydrothermal Plumes (SWEAP)

DOI

Project SWEAP (Southwest Indian Ridge Earthquakes and Plumes), a collaborative effort led by the Alfred-Wegener-Institute, installed a network of 10 broad-band ocean bottom seismometers (OBS) along the ultraslow-spreading Oblique Supersegment of the Southwest Indian Ridge. The presented data set covers the continuous records of 8 stations of the network provided by the DEPAS instrument pool. One station of the original network could not be recovered, another one did not return data. The instruments were spaced at roughly 15 km intervals in a triangular shape network to either side of the rift axis covering about 60 km along axis between 13°E and 13.8°E and 60 km across axis between 52°S and 52.6°S. The determination of the OBS positions is described by Schmid et al. (2016). The network design was optimized for detecting and locating deep seismicity in the area. The rift valley was filled with soft silica ooze, producing considerable delay of S-phases at selected stations. Instrument deployment started during RV Polarstern cruise ANT-XXIX/2 on December 05 2012. Instrument recovery was completed during RV Polarstern cruise ANT-XXIX/8 on November 26 2013. 5 Refraction seismic lines were acquired by RV Polarstern cruise ANT-XXIX/8 from November 17 to 19 in 2013. All OBS could be synchronized with the GPS clock upon recovery such that skew values describing the clock drift are available for all stations. The non-linear clock drift of station SWE05 was determined by means of noise cross-correlations and applied to the data set. All other stations show a linear drift, which was corrected.

Identifier
DOI https://doi.org/10.14470/7R7567193925
Related Identifier IsDocumentedBy https://doi.org/10.17815/jlsrf-3-165
Related Identifier IsDocumentedBy https://doi.org/10.2312/BzPM_0671_2013
Related Identifier IsDocumentedBy https://doi.org/10.2312/BzPM_0672_2014
Related Identifier IsCitedBy https://doi.org/10.1002/2016GC006271
Related Identifier IsCitedBy https://doi.org/10.1038/nature18277
Related Identifier HasMetadata https://geofon.gfz-potsdam.de/waveform/archive/response/2E/2012_2013
Related Identifier IsCompiledBy https://obsinfo.readthedocs.io/en/master/
Related Identifier IsDescribedBy https://www.ipgp.fr/~crawford/Documents/OBS_data_standards.pdf
Metadata Access http://doidb.wdc-terra.org/oaip/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:doidb.wdc-terra.org:7402
Provenance
Creator Schlindwein, Vera ORCID logo; Schmidt-Aursch, Mechita ORCID logo
Publisher GFZ Data Services
Contributor Deutsches GeoForschungsZentrum GFZ; GEOFON Data Centre; geofon(at)gfz-potsdam.de; Alfred Wegener Institute (AWI), Bremerhaven, Germany
Publication Year 2022
Funding Reference German Science Foundation (DFG) SCHL853/1-1: SWEAP
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/legalcode
OpenAccess true
Contact geofon(at)gfz-potsdam.de
Representation
Language English
Resource Type Seismic Network; Dataset
Format .mseed; XML
Size 161GB
Discipline Acoustics; Engineering Sciences; Mechanical and industrial Engineering; Mechanics and Constructive Mechanical Engineering
Spatial Coverage (13.000W, -53.000S, 14.000E, -52.000N); Southwest Indian Ridge