Ocean bottom seismometer experiment on the Beaufort shelf and slope region conducted during Expedition ARA04C on the IBRV Araon [electronic resource] / [by] M. Riedel [and others].

Published: Ottawa : Natural Resources Canada, 2014.
Physical Description: 53 pages : figures, tables, graphs
Additional Creators: Riedel, Michael, Canada. Natural Resources Canada, and Geological Survey of Canada

Access Online

publications.gc.ca , Free-to-read

Availability

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Series

Open file (Geological Survey of Canada) ; 7620

Restrictions on Access

Free-to-read Unrestricted online access

Summary

Expedition ARA04C was conducted from September 10 to September 26, 2013 on the Korean icebreaker IBRV Araon in the Canadian Beaufort Sea. The expedition was set out to collect scientific data for a regional geo-hazard assessment of the offshore Beaufort region. A critical element of the hazards is the distribution of permafrost across the shelf and slope region. To address this question a set of Ocean Bottom Seismometers (OBS) were deployed to measure seismic velocities as indicator for ice-content in the sub-surface. This report describes the techncially required pre-processing steps (OBS relocation and orientation analyses) and includes an initial compressional wave velocity analysis. The analysis of the hydrophone and vertical-component data from the OBS stations reveals a compressional wave-velocity structure with values ranging from 1800 m/s to over 4000 m/s indicative of wide-spread ice-bearing sediments.

Report Numbers

M183-2/7621E-PDF

Other Subject(s)

Bibliography Note

Includes bibliographical references.

Type of File/Data

Electronic monograph in PDF format.

View MARC record | catkey: 24797569