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    Seismicity of the Andaman–Nicobar Islands and Andaman Sea

    Carter, Andrew and Bandopadhyay, P.C. (2017) Seismicity of the Andaman–Nicobar Islands and Andaman Sea. In: Carter, Andrew and Bandopadhyay, P.C. (eds.) The Andaman–Nicobar Accretionary Ridge: Geology, Tectonics and Hazards. Memoirs 47. Geological Society, London, pp. 205-213. ISBN 9781786202819.

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    Abstract

    This chapter examines the history and distribution of seismicity across the Andaman–Nicobar island arc and Andaman Sea. Fundamental differences between the Andaman section of the subduction zone and the Sumatra–Java section to the south help to explain the nature of the deformation. Magnitudes of displacements varied along-strike from uniform dip-slip on the southern (Sumatran) segment to dip-slip and strike-slip components on the Andaman and Nicobar segment. The Andaman section has a more steeply dipping slab and a thicker sediment cover compared to the Sumatra region where coupling with the overlying plate is stronger. Temporal and spatial patterns of seismicity in the Andaman Sea spreading centre are consistent with normal faulting and c. 25 year cycles of dyke injection are considered responsible for the bulk of the spreading.

    Metadata

    Item Type: Book Section
    Additional Information: ISSN: 0435-4052
    School: Birkbeck Schools and Departments > School of Science > Earth and Planetary Sciences
    Depositing User: Professor Andrew Carter
    Date Deposited: 27 Feb 2017 09:22
    Last Modified: 27 Feb 2017 09:22
    URI: http://eprints.bbk.ac.uk/id/eprint/18123

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