Controls on the regional distribution of landslide dams and implications for fluvial landform evolution in Bhutan and its surrounding area
文献类型:期刊论文
作者 | Zhang, Qi-yuan2,3; Hu, Kai-heng3; Liu, Shuang3; Liu, Wei-ming1,2,3 |
刊名 | JOURNAL OF MOUNTAIN SCIENCE |
出版日期 | 2023-08-01 |
卷号 | 20期号:8页码:2107-2132 |
ISSN号 | 1672-6316 |
关键词 | Bhutan Himalayas Landslide dams Erosion rate Geomorphological impacts Landscape evolution |
DOI | 10.1007/s11629-023-8041-6 |
英文摘要 | The regional distribution of landslide dams can provide valuable insights into the interactions among various factors, including lithology, topography, climate, and fluvial landforms in tectonically active mountains. Himalayan rivers are frequently impacted by large-scale landslide damming, which profoundly influence fluvial geomorphology. In this study, we identified 1652 landslide dams in four major rivers of Bhutan and its surrounding area by remote sensing interpretation. Notably, approximately 71% of these landslide dams are found in regions composed of quartzite or gneiss. Fault-related tectonic activity plays a significant role in governing the distribution of these landslide dams, as approximately 83% of the mapped landslide dams are found within a 10 km radius of the nearest fault. The majority of the identified landslide dams are situated in areas with relatively modest local relief, ranging from 227 m to 327 m. These dams tend to cluster in the tributaries, and the stream power of almost 95% of them is typically below 1x10(6) kg m(2) s(-3). Our data, combining the erosion rate and kernel density map of the landslide dams, reveals that regions with high erosion rates do not consistently align with the major high-density distribution of landslide dams. It is shown that the distribution of landslide dams is strongly influenced by the valley form. In comparison to U-shaped valleys, V-shaped valleys exhibit a higher density of landslide dams. Intriguingly, we also find a positive correlation between the landslide-dam distribution density and the erosion rate only in relatively arid regions with mean annual rainfall less than 500 mm. Moreover, the length of the upstream reach protected by the knickpoint associated with both lithology and landslide damming is about three times longer than that protected by the knickpoint associated only with landslide damming. |
WOS关键词 | RIVER INCISION ; ROCK-UPLIFT ; THRESHOLD HILLSLOPES ; TOPOGRAPHIC ANALYSIS ; SHORT COMMUNICATION ; MOUNTAIN-RANGES ; SOUTHERN TIBET ; EROSION RATES ; SLOPE FAILURE ; NEW-ZEALAND |
资助项目 | National Natural Science Foundation of China[41790434] ; National Key Ramp ; D Program of China[2018YFC1505205] |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | SCIENCE PRESS |
WOS记录号 | WOS:001048842800001 |
资助机构 | National Natural Science Foundation of China ; National Key Ramp ; D Program of China |
源URL | [http://ir.imde.ac.cn/handle/131551/57571] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
通讯作者 | Hu, Kai-heng |
作者单位 | 1.China Pakistan Joint Res Ctr Earth Sci, Islamabad 30001, Pakistan 2.Univ Chinese Acad Sci, Beijing 100149, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610299, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Qi-yuan,Hu, Kai-heng,Liu, Shuang,et al. Controls on the regional distribution of landslide dams and implications for fluvial landform evolution in Bhutan and its surrounding area[J]. JOURNAL OF MOUNTAIN SCIENCE,2023,20(8):2107-2132. |
APA | Zhang, Qi-yuan,Hu, Kai-heng,Liu, Shuang,&Liu, Wei-ming.(2023).Controls on the regional distribution of landslide dams and implications for fluvial landform evolution in Bhutan and its surrounding area.JOURNAL OF MOUNTAIN SCIENCE,20(8),2107-2132. |
MLA | Zhang, Qi-yuan,et al."Controls on the regional distribution of landslide dams and implications for fluvial landform evolution in Bhutan and its surrounding area".JOURNAL OF MOUNTAIN SCIENCE 20.8(2023):2107-2132. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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