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| Titel |
Earthquake-triggered landslides in southwest China |
| VerfasserIn |
X. L. Chen, Q. Zhou, H. Ran, R. Dong |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 12, no. 2 ; Nr. 12, no. 2 (2012-02-17), S.351-363 |
| Datensatznummer |
250010503
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| Publikation (Nr.) |
 copernicus.org/nhess-12-351-2012.pdf |
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| Zusammenfassung |
| Southwest China is located in the southeastern margin of the Tibetan Plateau and
it is a region of high seismic activity. Historically, strong earthquakes
that occurred here usually generated lots of landslides and brought
destructive damages. This paper introduces several earthquake-triggered
landslide events in this region and describes their characteristics. Also,
the historical data of earthquakes with a magnitude of 7.0 or greater, having
occurred in this region, is collected and the relationship between the
affected area of landslides and earthquake magnitude is analysed. Based on
the study, it can be concluded that strong earthquakes, steep topography as
well as fragile geological environment, are the main reasons responsible for
serious landslides in southwest China. At the same time, it is found that
the relationship between the area affected by landslides and the earthquake
magnitude in this region are consistent with what has been obtained worldwide. Moreover, in this paper, it is seen that the size of the areas
affected by landslides change enormously even under the same earthquake
magnitude in the study region. While at the same tectonic place or fault
belt, areas affected by landslides presented similar outline and size. This
means that local geological conditions and historical earthquake background
have an important influence on landslides distribution, and they should be
considered when assessing earthquake-triggered landslide hazards at Grade 1
according to ISSMGE. |
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