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Natural Hazards

, Volume 46, Issue 1, pp 107–117 | Cite as

Socotra Island, Yemen: field survey of the 2004 Indian Ocean tsunami

  • Hermann M. Fritz
  • Emile A. Okal
Original Paper

Abstract

The tsunami of 26th December 2004 severely affected Yemen’s Socotra Island with a death at a distance of 4,600 km from the epicenter of the Magnitude 9.0 earthquake. Yemen allowed a detailed assessment of the far-field impact of a tsunami in the main propagation direction. The UNESCO mission surveyed 12 impacted towns on the north and south shores covering from the east to the west tip of Socotra. The international team members were on the ground in Yemen from 11 to 19 October 2006. The team measured tsunami run-up heights and inundation distances based on the location of watermarks on buildings and eyewitness accounts. Maximum run-up heights were typically on the order of 2–6 m. Each measurement was located by means of global positioning systems (GPS) and photographed. Numerous eyewitness interviews were recorded on video. The tsunami impact on Socotra is compared with other locations along the shores of the Indian Ocean.

Keywords

Tsunami Runup 26 December 2004 earthquake Indian Ocean Yemen Socotra Island Horn of Africa Field survey 

Notes

Acknowledgments

The survey team was supported by the United Nations Educational, Scientific and Cultural Organization (UNESCO) award #4500034222. The authors would like to thank the Intergovernmental Oceanographic Commission (IOC) of UNESCO in Paris and the local Socotra Conservation and Development Program (SCDP) staff on Socotra Island in Yemen, in particular our local survey guide geologist Mohammed Najeeb.

References

  1. Borrero JC (2005a) Field data and satellite imagery of tsunami effects in Banda Aceh. Science 308(5728):1596CrossRefGoogle Scholar
  2. Borrero JC (2005b) Field survey of northern Sumatra and Banda Aceh, Indonesia after the tsunami and earthquake of 26 December 2004. Seismol Res Lett 76:312–320CrossRefGoogle Scholar
  3. Borrero JC, Synolakis CE, Fritz HM (2006) Field surveys of northern Sumatra after the tsunami and earthquake of 26 December 2004. Earthquake Spectra 22(S3):S93–S104CrossRefGoogle Scholar
  4. Fritz HM, Borrero JC (2006) Somalia field survey of the 2004 Indian Ocean tsunami. Earthquake Spectra 22(S3):S219–S233CrossRefGoogle Scholar
  5. Fritz, H.M., Borrero JC, Synolakis CE, Yoo J (2006a) 2004 Indian Ocean tsunami flow velocity measurements from survivor videos. Geophys Res Lett 33:L24605,  doi:10.1029/2006GL026784
  6. Fritz HM, Synolakis CE, McAdoo BG (2006b) Maldives field survey of the 2004 Indian Ocean tsunami. Earthquake Spectra 22(S3):S137–S154CrossRefGoogle Scholar
  7. Liu PL-F, Lynett P, Fernando J, Jaffe BE, Fritz HM, Higman B, Morton R, Goff J, Synolakis CE (2005) Observations by the International Tsunami Survey Team in Sri Lanka. Science 308(5728):1595CrossRefGoogle Scholar
  8. Okal EA, Dengler L, Araya S, Borrero JC, Gomer B, Koshimura S, Laos G, Olcese D, Ortiz M, Swensson M, Titov VV, Vegas F (2002) A field survey of the Camana, Peru tsunami of June 23, 2001. Seismol Res Lett 73:904–917Google Scholar
  9. Okal EA, Fritz HM, Raveloson R, Joelson G, Pančošková P, Rambolamanana G (2006a) Field Survey of the 2004 Indonesian Tsunami in Madagascar. Earthquake Spectra 22(S3):S263–S283CrossRefGoogle Scholar
  10. Okal EA, Fritz HM, Synolakis CE, Raad PE, Al-Shijbi Y, Al-Saifi M (2006b) Field Survey of the 2004 Indonesian Tsunami in Oman. Earthquake Spectra 22(S3):S203–S218CrossRefGoogle Scholar
  11. Okal EA, Sladen A, Okal EA-S (2006c) Rodrigues, Mauritius, and Réunion Islands Field Survey after the December 2004 Indian Ocean Tsunami. Earthquake Spectra 22(S3):S241–S261CrossRefGoogle Scholar
  12. Stein S, Okal EA (2005) Size and speed of the Sumatra earthquake. Nature 434:580–582CrossRefGoogle Scholar
  13. Synolakis CE, Kong L (2006) Run up measurements of the December 2004 tsunami. Earthquake Spectra 22(S3):S67–S91CrossRefGoogle Scholar
  14. Synolakis CE, Okal EA (2005) 1992–2002: perspective on a decade of post-tsunami surveys. In: Tsunamis: Case studies and recent developments. Satake K (ed), Adv Nat Technol Haz 23:1–30Google Scholar
  15. Synolakis CE, Okal EA (2006) Far-field tsunami risk for mega-thrust earthquakes in the Indian Ocean. Eos Trans. AGU 87(52), Fall Meet Suppl, Abstract U53A-0040Google Scholar
  16. Titov VV, Rabinovich AB, Mofjeld HO, Thomson RE, Gonzalez FI (2005) The global reach of the 26 December 2004 Sumatra tsunami. Science 309(5743):2045–2048CrossRefGoogle Scholar
  17. Tsuji Y, Imamura F, Matsutomi H, Synolakis CE, Nanang PT, Jumadi, Harada S, Han SS, Arai K, Cook B (1995) Field survey of the East Java earthquake and tsunami of June 3, 1994. Pure Appl Geophys 144:839–854CrossRefGoogle Scholar
  18. UNEP (2005) National rapid environmental assessment—Yemen. United Nations Environmental ProgramGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  1. 1.School of Civil & Environmental EngineeringGeorgia Institute of TechnologySavannahUSA
  2. 2.Department of Geological SciencesNorthwestern UniversityEvanstonUSA

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