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1948 Litang earthquake

Earthquake in China

Summary

Earthquake in China

Field	Value
title	1948 Litang earthquake
timestamp	1948-05-25 07:11:34
isc-event	897351
anss-url	iscgem897351
local-date
local-time	15:11:34
map2	{{Location map	China Sichuan
lat	29.5
long	100.5
mark	Bullseye1.png
marksize	40
position	top
width	250
float	right
caption	}}
magnitude	7.2
depth	18 km
location
countries affected	China
intensity
casualties	800

| isc-event = 897351 | anss-url = iscgem897351 | local-date = | local-time = 15:11:34

The 1948 Litang earthquake () occurred on May 25, 1948, at 07:11 UTC. It was located near Litang, China. Now situated in the Sichuan Province, Litang County was then called Lihua (or Lihwa) (理化) County and belonged to the defunct Xikang (or Sikang) Province. The earthquake had a magnitude of 7.2,

This earthquake caused more than 800 deaths. More than 600 houses collapsed in the areas around Litang and Daocheng. Landslides, ground fissures and sandblows occurred in the region. The intensity of the earthquake reached MM X. Some of the aftershocks caused additional damage.

The earthquake occurred in the middle segment between Litang and Dewu (德巫) of the Litang-Dewu fault zone (理塘-德巫断裂带). Litang Fault, situated in the Sichuan-Yunnan rhombic block (川滇菱形块体), is a NW-trending fault and dominated mainly by left-lateral shear movement. The average horizontal slip rate of the Litang Fault is about 3.2 to 4.4 mm/yr on the Litang-Dewu segment and about 2.6 to 3.0 mm/yr on the segment to the north of Litang. A study of Wang et al. estimated that the Litang fault has a left-lateral strike-slip rate of 4.4±1.3 mm/yr and an extension rate of 2.7±1.1 mm/yr. The focal mechanism was recognized to be a left-lateral slip on a plane striking northwest (315°) for a distance of about 75 km. The released seismic moment was estimated to be about 7.4×1019 Nm.

References

National Geophysical Data Center / World Data Service (NGDC/WDS). (1972). "Significant Earthquake Database". [[National Geophysical Data Center]], [[National Oceanic and Atmospheric Administration.
"Today in Earthquake History". United States Geological Survey.
"1986年8月7日四川省理塘5.6级地震 (August 7 , 1986 : A 5.6 magnitude earthquake struck Litang, Sichuan Province)". China Earthquake Networks Center.
Zhou, R.J.. (2005). "Research on active faults in Litang–Batang region, western Sichuan province, and the seismogenic structures of the 1989 Batang M 6.7 earthquake swarm". Seismol.Geol..
Wang, Y.. (2008). "GPS-constrained inversion of present-day slip rates along major faults of the Sichuan-Yunnan region, China". Science in China Series D: Earth Sciences.
Molnar, P.. "Faulting associated with large earthquakes and the average rate of deformation in central and eastern Asia". Journal of Geophysical Research.
Engdahl, E. R.. (2002). "International Handbook of Earthquake & Engineering Seismology". [[Academic Press]].

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

1948-earthquakes earthquakes-in-sichuan garzê-tibetan-autonomous-prefecture 1948-disasters-in-asia 1948-disasters-in-china

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