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Outline of vertical displacement of the 2004 and 2005 Sumatra earthquakes revealed by satellite radar imagery

Abstract

Analyses of satellite radar imagery before and after the 2004 and 2005 Sumatra earthquakes reveal an overview of the uplift and submergence pattern of islands along the subduction zone and provide an outline of the regions that experienced coseismic vertical deformation. We find evidence of crustal deformation from the northern tip of the Andaman Islands to Nias Island. A line 145 km east of the trench separates western uplifted zone from eastern subsided zone. Agreement with the field observation demonstrates the feasibility of our method. We find that radar imagery analysis is more efficient for investigating vertical displacements than similar techniques using optical sensors.

References

  1. Banerjee, P., F. F. Pollitz, and R. Bürgmann, The size and duration of the Fig. 5. Uplift and subsidence caused by the 2004 and 2005 (in the green oval) Sumatra earthquakes extracted from satellite SAR images. The orange line 145 km east of the trench was drawn using GIS. Sumatra-Andaman earthquake from far-field static offsets, Science, 308, 1769–1772, 2005.

    Article  Google Scholar 

  2. Ishii, M., P. M. Shearer, H. Houston, and J. E. Vidale, Extent, duration and speed of the 2004 Sumatra-Andaman earthquake imaged by the Hi-Net array, Nature, 435, 933–936, doi:10.1038/nature03675, 2005.

    Google Scholar 

  3. Krüger, F. and M. Ohrnberger, Tracking the rupture of the Mw=9.3 Sumatra earthquake over 1,150 km at teleseismic distance, Nature, 435, 937–939, doi:10.1038/nature03696, 2005.

    Google Scholar 

  4. Meltzner, A. J., K. Sieh, M. Abrams, D. C. Agnew, K. W. Hudnut, J. P. Avouac, and D. H. Natawidjaja, Uplift and Subsidence Associated with the Great Aceh-Andaman Earthquake of 2004, J. Geophys. Res., doi:10. 1029/2005JB003891, 2006.

    Google Scholar 

  5. Ni, S., H. Kanamori, and D. Helmberger, Energy radiation from the Sumatra earthquake, Nature, 434, 582, 2005.

    Article  Google Scholar 

  6. Sieh, K., S. N. Ward, D. Natawidjaja, and B. W. Suwargadi, Crustal deformation at the Sumatran subduction zone revealed by coral rings, Geophys. Res. Lett., 26, 3141–3144, 1999.

    Article  Google Scholar 

  7. Vigny, C., W. J. Simons, S. Abu, R. Bamphenyu, C. Satirapod, N. Choosakul, C. Subarya, A. Socquet, K. Omar, H. Z. Abidin, and B. A. Ambrosius, Insight into the 2004 Sumatra-Andaman earthquake from GPS measurements in southeast Asia, Nature, 436, 201–206, 2005.

    Article  Google Scholar 

  8. Zachariasen, J., K. Sieh, F. W. Taylor, and W. S. Hantoro, Modern vertical deformation above the Sumatran subduction zone: paleogeodetic insights from coral microatolls, Bull. Seism. Soc. Am., 90, 897–913, 2000.

    Article  Google Scholar 

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Correspondence to Mikio Tobita.

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Tobita, M., Suito, H., Imakiire, T. et al. Outline of vertical displacement of the 2004 and 2005 Sumatra earthquakes revealed by satellite radar imagery. Earth Planet Sp 58, e1–e4 (2006). https://doi.org/10.1186/BF03351906

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Key words

  • Sumatra
  • SAR
  • satellite
  • emergence
  • subsidence
  • tsunami