Error Analysis of Inventories of Earthquake-Triggered Landslides
详细信息
- 责任者：Xu Chong (Key Laboratory of Active Tectonics and Volcano ; Institute of Geology ; Chinese Earthquake Administration ; Beijing 100029 ; China) ; Xu Xiwei
- 刊名：Geological Review
- 出版年：2013
- 卷期：59(6)
- 关键词：遥感 ; remote sensing ; 震灾 ; seismic hazard ; 滑坡 ; landslides
- 页码：p.1177-1188
- 图表：6 illus., 6 tables, 47 refs.
- 分类号：1600
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
摘要
Landslide inventory is the essential part of regional earthquake triggered landslide studies. In recent years,studies about landslide inventory related with single seismic event are common. However,area and volume error analysis of inventory of landslides triggered by earthquake is still lack. In this paper,a remote sensing image resolution based error analysis method of inventory of landslides triggered by earthquake was proposed. Error analysis of inventory of 2036 landslides triggered by the April 14,2010 Mw 6. 9 Yushu earthquake,inventory of30828 landslides triggered by the January 12,2010 Mw 7. 0 Haiti earthquake,and inventory of 197481 landslides triggered by the May 12,2008 Mw 7. 9 Wenchuan earthquake were carried out respectively. The results show that area of the Yushu earthquake triggered landslides is 1. 191 km2,of range from 1. 153 km2to 1. 229 km2,which is error range from 96. 81% to 103. 19%; these landslides in a total volume of 2. 012 × 106m3,of range from 1. 947× 106m3to 2. 078 × 106m3,in other words,error range from 96. 77% to 103. 28%. Area of the Haiti earthquake triggered landslides is 15. 743 km2,of range from 15. 118 km2to 16. 368 km2,which is error range from 96. 03%to 103. 97%; these landslides in a total volume of 29. 698 × 106m3,of range from 28. 594 × 106m3to 30. 821 ×106m3,in other words,error range from 96. 28% to 103. 78%. Area of the Wenchuan earthquake triggered landslides is 1160. 025 km2,of range from 1072. 258 km2to 1248. 424 km2,which is error range from 92. 43% to107. 62%; these landslides in a total volume of 4693. 159 × 106m3,of range from 4372. 957 ×106m3to 5033. 739× 106m3,in other words,error range from 93. 18% to 107. 26%. The relation between resolution of the remote sensing and landslide inventory error show that the remote sensing resolution affects on landslide inventory error significantly. Also,the correlation of earthquake landslide frequency distribution and landslide inventory error show that there was a significant effect on landslide inventory error for earthquake landslide frequency distribution. This method of earthquake triggered landslide inventory error analysis can be applied to other more regional earthquake triggered landslides events.
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