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| UTC time | 2000-01-14 23:37:07 |
|---|---|
| ISC event | 1884945 |
| USGS-ANSS | ComCat |
| Local date | January 15, 2000 (2000-01-15) |
| Local time | 07:37:07 CST |
| Magnitude | 5.9 Mw |
| Epicenter | 25°37′N 101°04′E / 25.61°N 101.06°E / 25.61; 101.06 |
| Type | Strike-slip |
| Areas affected | China |
| Max. intensity | MMI VI (Strong) |
| Casualties | 7 killed 2,528 injured 92,479 displaced |
The 2000 Yunnan earthquake occurred on January 14 at 23:37 UTC, in Yunnan, China. The earthquake killed 7 people, and caused much damage in central Yunnan Province.
The quake was moderate, with a magnitude of 5.9; however, it left 2,528 injured, 92,479 homeless and destroyed over 41,000 homes.[1]
It was preceded by a magnitude 5.5 foreshock at 22:09 on the same day.
Yunnan lies within the area affected by the continuing collision between the India Plate and the Eurasian Plate that has led to the formation of the Tibetan Plateau. Lateral eastward spreading of this zone of thickened crust is impeded by the presence of the South China Block and this causes clockwise rotation of the Sichuan–Yunnan block, accommodated by left-lateral strike-slip faults on its eastern margin and right lateral strike-slip faults to the west.[2]
The earthquake sequence started with two foreshocks at 22:09 (M5.5) and 22:23 (M3.9) on January 14.[3] The mainshock, which occurred soon afterwards at 23:37, had an estimated magnitude of 5.9 Mw (ANSS), 6.0 Mw or 6.5 Ms.[4] It was followed within the hour by a 4.5 Mw aftershock.
Based on the aftershock distribution, the earthquake was the result of rupture along a fault with a strike of N50°W. The causative fault was most likely the right lateral Maweiqing fault, one of the faults that forms the western boundary of the Sichuan-Yunnan block.[4][2]
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† indicates earthquake resulting in at least 30 deaths | |
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