Seismotectonics of a diffuse plate boundary:  Observations off the Sumatra-Andaman trench

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Authors

Kasey Aderhold, Rachel E. Abercrombie

Abstract

Seismic slip extends from maximum expected depth through the crust in 45-75 Ma oceanic lithosphere in the Indo-Australian intraplate region off the Sumatra-Andaman trench. Large (magnitude greater than 7) strike-slip earthquakes in this region can rupture multiple differently oriented faults. Rupture directivity modeling provides tentative support for active east-west oriented faults.

DOI

https://doi.org/10.31223/osf.io/d7z3h

Subjects

Earth Sciences, Geophysics and Seismology, Physical Sciences and Mathematics

Keywords

Earthquake source observations, earthquake, body waves, Transform faults, oceanic crust, Sumatra, Finite-fault, Oceanic transform and fracture zone processes, Wharton Basin

Dates

Published: 2017-11-05 12:42

License

Academic Free License (AFL) 3.0

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