1997 Manyi earthquake

1997 Manyi earthquake
UTC time1997-11-08 10:02:53
ISC event1051405
USGS-ANSSComCat
Local dateNovember 8, 1997 (1997-11-08)
Local time18:02:53 CST
Magnitude7.4 Mw
Depth15 km (9.3 mi)[1]
Epicenter35°04′08″N 87°19′30″E / 35.069°N 87.325°E / 35.069; 87.325
TypeStrike-slip
Areas affectedTibetan Autonomous Region
Max. intensityMMI VII (Very strong)

The 1997 Manyi earthquake (Chinese: 玛尼地震) occurred on November 8 at 10:02 UTC.[2] The epicenter was in Nagqu Prefecture in northern Tibet, China. The focal mechanism indicates a left-lateral strike-slip movement. This earthquake had a surface rupture of 17 km (11 mi) long with up to 7 m (23 ft) of left-lateral slip along the Manyi fault, a westward continuation of the Kunlun fault, offset about 100 km (62 mi) to the south.[3] Normally, the continental crust is about 35 km (22 mi) thick, but it reaches 70 km (43 mi) thick under the Tibetan Plateau. This earthquake ruptured up to 20 km (12 mi) of the top part of the local continental crust.[4]

See also

References

  1. ^ Peltzer, G.; Crampe, F.; King, G. (1999), "Evidence of nonlinear elasticity of the crust from the Mw7.6 Manyi (Tibet) earthquake" (PDF), Science, 286 (5438): 272–276, doi:10.1126/science.286.5438.272, PMID 10514367, archived from the original (PDF) on 2010-05-29, retrieved 2010-07-13
  2. ^ Significant Earthquakes of the World, United States Geological Survey, archived from the original on 2011-06-07
  3. ^ Washburn, Z.; Arrosmith, J. Ramon; Dupont-Nivet, G.; Xiao Feng, W.; Yu Qiao, Z.; Zhengle, C. (2003), "Paleoseismology of the Xorxol segment of the central Altyn Tagh Fault, Xinjiang, China" (PDF), Annals of Geophysics, 46 (5): 1015–1034
  4. ^ Burgmann, R.; Dresen, G. (2008), "Rheology of the Lower Crust and upper mantle: Evidence from Rock Mechanics, Geodesy, and Field Observations" (PDF), Annual Review of Earth and Planetary Sciences, 36: 546, Bibcode:2008AREPS..36..531B, doi:10.1146/annurev.earth.36.031207.124326
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