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Research Cruise Yields New Details of Macquarie Ridge Complex

Citation

Coffin, M and Karner, GD and Faley, DA, Research Cruise Yields New Details of Macquarie Ridge Complex, EOS, Transactions American Geophysical Union, USA, 75, 48, 561, 564 (1994) [Newspaper Article]

Abstract

During a 44-day expedition on board the Australian vessel Rig Seismic, scientists collected new information on the morphology of the Macquarie Ridge Complex (MRC), located at the boundary between the Pacific and Australian plates. In the joint venture, funded by the U.S. National Science Foundation and Australian Geological Survey Organization (AGSO), investigators from the two countries studied deformation in the area along the MRC, which includes the site of the largest earthquake of the 1980s (May 23, 1989, M=8.2). The researchers acquired 160,000 km2 of HAWAII MR1 (HIG acoustic wide-angle imaging instrument, mapping researcher 1) side-scan sonar/bathymetry images and 7000 km of 8-channel seismic reflection data (Figure 1). In addition, three 400-km gravity transects of the MRC were completed across the morphologic ridge and trench system. The transects were augmented by 96-channel seismic reflection imaging across the morphologic ridge and trench system. Gravity and magnetic data were collected during the entire survey.

Item Details

Item Type:Newspaper Article
Research Division:Earth Sciences
Research Group:Geology
Research Field:Marine Geoscience
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
ID Code:75371
Year Published:1994
Deposited By:IMAS - Directorate
Deposited On:2012-01-27
Last Modified:2012-01-27
Downloads:0

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