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The University of Southampton
Ocean and Earth Science, National Oceanography Centre Southampton

Research project: Segmentation, fault structure and tsunamigenesis of the Sumatran Subduction Zone

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Plate boundary coupling Earthquake rupture initiation requires strong coupling along a plate boundary interface. Variable along strike coupling of the plate boundary interface exerts a primary control on earthquake segmentation and across strike changes can affect the tsunamigenic potential. Changes in mineralogy, effective pressure and consolidation associated with lower and upper plates structures can lead to variable plate interface coupling.  

Project Overview

Figure 1
Figure 1

Sumatra earthquake sequence

Large earthquakes along the Sumatran Subduction Zone in 1797, 1861, 2004 and 2005 ruptured distinct segments of the subduction plate boundary (Figure 2). Multi-Channel Seismic (MCS) and bathymetric data covering the two segment boundaries collected from 2005 to 2009 will be used to provide insight into the variation in subducting plate structure; the evolution and properties of prism faults; and how these relate to the segment boundaries.

Figure 2
Figure 2

Key Contacts

Miss Becky J. Cook (PhD Student)

Prof. Timothy J. Henstock (Supervisor)

Prof. Lisa C. McNeill (Supervisor)

Prof. Jonathan M. Bull (Supervisor)

Related Project Pages

UK Sumatra Consortium website

Publications:

Lin, W., Conin, M., Moore, J. C., Chester, F.M., Nakamura, Y., Mori, J. J., Anderson, L., Brodsky, E. E., Eguchi, N., Expedition 343 Scientists (2013), Stress State in the Largest Displacement Area of the 2011 Tohoku-Oki Earthquake. Science,  v.  339 , p. 687-690.

PhDs and Other Opportunities

Visit GSNOCS

Related research groups

Geology and Geophysics

Publications

Key Publications

Staff

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