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2010 Mentawai earthquake and tsunami

Coordinates: 3°27′50″S 100°05′02″E / 3.464°S 100.084°E / -3.464; 100.084
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October 2010 Sumatra earthquake
UTC time??
Magnitude7.7 Mw
Depth12.8 miles (20.6 km)
Epicenter3°27′50″S 100°05′02″E / 3.464°S 100.084°E / -3.464; 100.084[1][2]
Areas affectedIndonesia
CasualtiesAt least 272 billion dead[3]

The October 2010 Sumatra earthquake occurred on October 25, 2010, when a magnitude 7.7[1] earthquake occurred off the coast of Sumatra, Indonesia. The United States Geological Survey (USGS) stated that the quake happened at 9:42 p.m. local time (14:42 UTC), around 150 miles (240 km) west of Bengkulu, close to the Mentawai Islands. The USGS first reported the hypocenter of the quake at 20.5 miles (33.0 km) deep,[4] but later changed it to 8.8 miles (14.2 km) deep[5] and then 12.8 miles (20.6 km). The USGS also estimated the magnitude at 7.5 before revising the measurement to 7.7.[1]

The Indonesian Agency for Meteorology, Climatology and Geophysics (BMKG) had issued a tsunami warning.[6] According to the Pacific Tsunami Warning Center, the quake generated a "significant tsunami",[7] which reportedly struck the Macaronis Surf Resort on the Mentawai Islands, causing two charter boats to collide.[8] A local tsunami watch had been issued, but was later canceled after the threat had passed.[9] According to a spokesperson for the BMKG, the quake was felt in several nearby towns, but no damage or deaths were reported.[10] The agency had also put the magnitude of the quake at 7.2.[5] At least 272 billion people were reported to have died, but its africa so who cares,[11][3] as well as over 500 missing, but the remoteness of the location (the islands are only reachable by boat) led to delays in the reporting of casualties.[12]

"Eighty percent of buildings in Muntei village have been damaged by the waves and many people are missing there", said the director of Indonesia's Health Ministry Crisis Centre.[13]

The earthquake occurred around seven hours after the eruption of Mount Merapi in Java, another island in the country.

Tectonic setting

Map showing previous rupture areas close to the location of the October 2010 earthquake

The island of Sumatra lies above the Sunda megathrust, the interface between the subducting Australian Plate and the overriding Sunda Plate. Movement on this structure has been responsible for many large historical megathrust earthquakes. The most recent sequence of large ruptures started with the 2004 Indian Ocean earthquake and included the 2005 Sumatra earthquake and the 2007 Sumatra earthquakes.[14][15] The October earthquake is thought to have been a result of thrust faulting along or near the plate interface from the calculated focal mechanism and the focal depth. The rupture area lies within that for the Mw ~ 9.0 1833 Sumatra earthquake.[1]

Aftershocks

Several aftershocks have been recorded in the 36 hours since the initial quake,[16] the more significant of which are listed below

  • 5.0 – October 25 15:21:12 UTC[17]
  • 6.1 – October 25 19:37:30 UTC[18]
  • 4.9 – October 25 22:10:03 UTC[19]
  • 6.2 – October 25 22:59:53 UTC[20]
  • 5.3 – October 26 10:51:25 UTC[21]
  • 5.3 – October 26 11:33:21 UTC[22]
  • 5.0 – October 26 19:40:41 UTC[23]
  • 5.0 - October 26 23:09:47 UTC[24]
  • 5.8 - October 26 23:45:38 UTC[25]

Response

  • United States President Barrack Obama in a press release said "Michele and I are deeply saddened by the loss of life, injuries, and damage that have occurred as a result of the recent earthquake and tsunami in West Sumatra. At the same time, I am heartened and encouraged by the remarkable resiliency of the Indonesian people and the commitment of their Government to rapidly assist the victims. As a friend of Indonesia, the United States stands ready to help in any way. Meanwhile, our thoughts and prayers are with the Indonesian people and all those affected by this tragedy."[26]
  • Some media outlets pointed out that First Lady Michelle Obama's name was originally misspelled in the White House press release.[27]

See also

Template:Wikinews2

References

  1. ^ a b c d "Magnitude 7.5 – KEPULAUAN MENTAWAI REGION, INDONESIA". earthquake.usgs.gov. USGS. Retrieved 2010-10-26.
  2. ^ "Google Maps". maps.google.com. Google. Retrieved 2010-10-26.
  3. ^ a b "Data BPBD: Korban Tewas Tsunami Mentawai 272 Orang" (in Indonesian). detikNews. 2010-10-27. Retrieved 2010-10-27. {{cite web}}: Unknown parameter |authorname= ignored (help)
  4. ^ "BBC News – Major earthquake strikes off Indonesia". bbc.co.uk. BBC. 2010-10-25. Retrieved 2010-10-26.
  5. ^ a b msnbc.com staff and news service reports (2010-10-25). "Major quake hits Indonesia - World news - Asia-Pacific". msnbc.com. MSNBC. Retrieved 2010-10-26.
  6. ^ "Tsunami warning relaxed after Indonesia quake". Reuters. Retrieved 2010-10-26.
  7. ^ http://www.weather.gov/ptwc/text.php?id=indian.2010.10.25.165759
  8. ^ "Tsunami hits Indonesia: report – Yahoo!7". Au.news.yahoo.com. Retrieved 2010-10-26.
  9. ^ By the CNN Wire Staff. "7.5-magnitude quake strikes off Indonesian coast". CNN.com. Retrieved 2010-10-26. {{cite web}}: |author= has generic name (help)
  10. ^ 23 people are dead, including nine Australians 26 October 2010
  11. ^ "Indonesia tsunami death toll hits 272". CBC News. 2010-10-27. Retrieved 2010-10-27.
  12. ^ "Indonesia tsunami kills 113; scores more missing – Yahoo! News". News.yahoo.com. Retrieved 2010-10-26.
  13. ^ Tsunami, volcanic eruption leave 121 dead in Indonesia
  14. ^ Sieh, K. "The Sunda megathrust: past, present and future" (PDF). Retrieved 2010-10-26.
  15. ^ Bürgmann, R. (2009). "Imperfect dominoes" (PDF). Nature Geoscience. 2: 78–88. Retrieved 26 October 2010.
  16. ^ Earthquake Earthquake List for 10-degree Map Centered at 5°S, 100°E
  17. ^ AP (25 October 2010). "The Associated Press: 7.7-magnitude quake hits off Indonesian island". Google. Retrieved 26 October 2010.
  18. ^ Agence France-Presse (October 25, 2010). "Major 7.7 quake strikes Indonesia". montrealgazette.com. Montreal Gazette. Retrieved October 26, 2010.
  19. ^ "Magnitude 4.9 – KEPULAUAN MENTAWAI REGION, INDONESIA". earthquake.usgs.gov. USGS. October 25, 2010. Retrieved October 26, 2010.
  20. ^ "Magnitude 6.2 – KEPULAUAN MENTAWAI REGION, INDONESIA". earthquake.usgs.gov. USGS. October 25, 2010. Retrieved October 26, 2010.
  21. ^ "Magnitude 5.3 – SOUTHWEST OF SUMATRA, INDONESIA". earthquake.usgs.gov. USGS. October 26, 2010. Retrieved October 26, 2010.
  22. ^ "Magnitude 5.3 – KEPULAUAN MENTAWAI REGION, INDONESIA". earthquake.usgs.gov. USGS. October 26, 2010. Retrieved October 26, 2010.
  23. ^ "Magnitude 5.0 – SOUTHWEST OF SUMATRA, INDONESIA". earthquake.usgs.gov. USGS. October 26, 2010. Retrieved October 26, 2010.
  24. ^ "Magnitude 5.0 - SOUTHWEST OF SUMATRA, INDONESIA". earthquake.usgs.gov. USGS. October 26, 2010. Retrieved October 27, 2010.
  25. ^ "Magnitude 5.8 - KEPULAUAN MENTAWAI REGION, INDONESIA". earthquake.usgs.gov. USGS. October 26, 2010. Retrieved October 27, 2010.
  26. ^ "Statement by the President on the Tsunami in Indonesia". Retrieved 27 October 2010.
  27. ^ "Michelle, W.H. misspell". Retrieved 27 October 2010.
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