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Plate-boundary deformation associated with the great Sumatra–Andaman earthquake

Author

Listed:
  • Cecep Subarya

    (National Coordinating Agency for Surveys and Mapping)

  • Mohamed Chlieh

    (California Institute of Technology)

  • Linette Prawirodirdjo

    (University of California San Diego)

  • Jean-Philippe Avouac

    (California Institute of Technology)

  • Yehuda Bock

    (University of California San Diego)

  • Kerry Sieh

    (California Institute of Technology)

  • Aron J. Meltzner

    (California Institute of Technology)

  • Danny H. Natawidjaja

    (Indonesian Institute of Sciences)

  • Robert McCaffrey

    (Rensselaer Polytechnic Institute)

Abstract

The Sumatra–Andaman earthquake of 26 December 2004 is the first giant earthquake (moment magnitude Mw > 9.0) to have occurred since the advent of modern space-based geodesy and broadband seismology. It therefore provides an unprecedented opportunity to investigate the characteristics of one of these enormous and rare events. Here we report estimates of the ground displacement associated with this event, using near-field Global Positioning System (GPS) surveys in northwestern Sumatra combined with in situ and remote observations of the vertical motion of coral reefs. These data show that the earthquake was generated by rupture of the Sunda subduction megathrust over a distance of >1,500 kilometres and a width of

Suggested Citation

  • Cecep Subarya & Mohamed Chlieh & Linette Prawirodirdjo & Jean-Philippe Avouac & Yehuda Bock & Kerry Sieh & Aron J. Meltzner & Danny H. Natawidjaja & Robert McCaffrey, 2006. "Plate-boundary deformation associated with the great Sumatra–Andaman earthquake," Nature, Nature, vol. 440(7080), pages 46-51, March.
    • Handle: RePEc:nat:nature:v:440:y:2006:i:7080:d:10.1038_nature04522
    DOI: 10.1038/nature04522
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