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| 引用本文： | 王秋良,薛宏交,杨强,王敦,李井冈,张丽芬. �������������ֺ��ĵ������ӷ���[J]. 大地测量与地球动力学, 2008, 28(6): 68-72 |
| 作者姓名： | 王秋良 薛宏交 杨强 王敦 李井冈 张丽芬 |
| 作者单位： | 1. 中国地震局地震研究所,武汉,430071;中国地质大学工程学院,武汉,430074 2. 中国地震局地震研究所,武汉,430071 3. 中国地质大学工程学院,武汉,430074 |
| 基金项目： | 中国地震局地震研究所所长基金 |
| 摘 要： | ????????????????о??????????????????(DEM)?????????????е??????????????????о????????????40??~50??????????18??~30????????????50~70 m?????????????????????????????? |
| 关 键 词： | ?????????(DEM) ???????? ?????? ??????? ???????? |
ANALYSIS ON TERRAIN FACTORS OF EARTHQUKAE DISASTER IN BEICHUAN AREA |
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| Wang Qiuliang,Xue Hongjiao,Yang Qiang,Wang Dun,Li Jinggang,Zhang Lifen. ANALYSIS ON TERRAIN FACTORS OF EARTHQUKAE DISASTER IN BEICHUAN AREA[J]. Journal of Geodesy and Geodynamics, 2008, 28(6): 68-72 | |
| Authors: | Wang Qiuliang Xue Hongjiao Yang Qiang Wang Dun Li Jinggang Zhang Lifen |
| Affiliation: | 1) Institute of Seismology,CEA,Wuhan 4300712)China University of Geosciences, Faculty of Engineering, Wuhan 430074 |
| Abstract: | The images before and after earthquake of Beichuan County are compared, based on tectonic background of regional geology, moreover, the various terrain factors including slope, aspect, Plan of curvature, profile curvature, slope rate and so on, are extracted from Digital Elevation Model (DEM),to quantitatively analyze the terrain information. The preliminary result indicates as follows: in Beichuan County, the slope ranges from 40° to 50°, slope change rate is between 18° and 30°, and relief amplitude ranges from 50 m to 70 m, the seismic secondary disasters,such as landslide and barrier lake triggered by landslide in some valley areas are extremely easy to occur in even wider areas. |
| Keywords: | Digital Elevation Model (DEM) terrain factor Wenchuan Ms8.0 earthquake geological hazard Beichuan area |
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