Spatial and Temporal Distribution of Geologic Hazards in Shaanxi Province
文献类型：期刊论文
| 作者 | Liang, Shizhengxiong1,2; Chen, Dong1,2; Li, Donghuan1,2; Qi, Youcun1,2; Zhao, Zhanfeng1,2 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 13期号:21页码:16 |
| 关键词 | geological hazards spatio-temporal distribution impact factors Shaanxi province rainfall threshold |
| DOI | 10.3390/rs13214259 |
| 通讯作者 | Chen, Dong(dchen@igsnrr.ac.cn) |
| 英文摘要 | The spatio-temporal distribution of geological hazards, including collapses, landslides, and debris flows, in Shaanxi province, China was studied based on data from 1951 to 2018. The potential impact factors, including the geomorphologic types, rivers, roads, rainfall, and earthquakes, were analyzed using Random Forests. The results indicated that most hazards occurred in summer (i.e., July-September) and were triggered by rainstorms. The freeze-thaw effect had a considerable contribution to hazards in the north. Spatially, most hazards in the north occurred in valley terraces of the Loess Plateau, while medium-relief terrane (relief ranged from 500 to 1000 m) in the southern Qinling Mountains were hazard-prone areas. The collapses and landslides were mainly affected by human factors in Northern Shaanxi, whereas in Southern Shaanxi geomorphology was the primary factor. Permeability was a dominant factor for debris flows. In addition, the 2008 Wenchuan earthquake had a remarkable influence on the spatial distribution of hazards. In contrast, for the situation in the Sichuan province, which was close to the earthquake epicenter, the Wenchuan earthquake triggered many collapse and landslide events in the southwest regions of Shaanxi province only on 12 May 2008. The thresholds for the three hazard types in the north and south regions were almost the same despite their distinctly different geologic characteristics. Through a sensitivity analysis, we found an appropriate dry period of 12 h for the area. |
| WOS关键词 | RAINFALL THRESHOLDS ; DEBRIS FLOWS ; LANDSLIDES ; INITIATION ; SLOPE |
| 资助项目 | National Key Research and Development Project[2018YFC1507505] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000726589000001 |
| 出版者 | MDPI |
| 资助机构 | National Key Research and Development Project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/168338]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Chen, Dong |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Shizhengxiong,Chen, Dong,Li, Donghuan,et al. Spatial and Temporal Distribution of Geologic Hazards in Shaanxi Province[J]. REMOTE SENSING,2021,13(21):16. |
| APA | Liang, Shizhengxiong,Chen, Dong,Li, Donghuan,Qi, Youcun,&Zhao, Zhanfeng.(2021).Spatial and Temporal Distribution of Geologic Hazards in Shaanxi Province.REMOTE SENSING,13(21),16. |
| MLA | Liang, Shizhengxiong,et al."Spatial and Temporal Distribution of Geologic Hazards in Shaanxi Province".REMOTE SENSING 13.21(2021):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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