Spatiotemporal distribution of regional landslides and erosion rates in Southeastern Tibet
文献类型：期刊论文
| 作者 | Wang, Xue-liang1,2,3; Sun, Juan-juan1,2,3; Wang, Shan-shan4; Qi, Sheng-wen1,2,3; Zhao, Hai-jun1,2,3; Guo, Song-feng1,2,3; Wang, Xin-hui5 |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 20期号:6页码:1650-1659 |
| ISSN号 | 1672-6316 |
| 关键词 | Landslide Spatiotemporal distribution Radiocarbon dating Rock varnish Southeastern Tibet |
| DOI | 10.1007/s11629-022-7716-8 |
| 英文摘要 | The difficulty in estimating ages of regional landslides hampers to assess frequency of landslides and hence to quantitatively assess regional landslide hazard. In this study, we used radiocarbon dating of organic sediment on boulder rock varnish to estimate landslide ages in Langxian (LX) arid region in southeastern Tibet. Samples of rock varnish with organic sediment were collected on site for radiocarbon dating, leading to landslide ages from 1880 & PLUSMN; 30 to 18,430 & PLUSMN; 30 yr B.P. To measure surface roughness characteristics of 109 remotely-mapped large bedrock landslide deposits, we estimated average standard deviation of slope (SDS) over an area of & SIM;640 km(2) by calculating the slope gradient of each raster cell and using a rectangular moving window method in ArcMap from a 5 m-resolution Digital Elevation Model generated from helicopter-obtained photographs. Combing estimated landslide ages (t) with average surface roughness of mapped landslide deposits (R) quantified by SDS, we fit an exponential landslide deposits surface roughness-age function (t=1.47x10(6)xe(-1.46R), r(2)=0.63) that was used to estimate regional landslide ages in LX. We conclude that three periods with clusters of regional landslides in LX were revealed by different surface roughness of landslide deposits combing roughness-age function, with the values of 5563-7455 yr B.P., 1724-4151 yr B.P., and 960-1287 yr B.P.. Furthermore, we used our estimates of landslide ages to quantify landslide erosion rates of three corresponding hillslopes in LX ranging from 0.50 to 2.42 mm yr(-1). Although rock varnish radiocarbon dating provides us a feasible option for timing regional landslides of arid regions, the epistemic uncertainty in the dating method should arouse our attention, which could be reduced by increasing the number of samples. |
| WOS关键词 | ROCK-VARNISH ; SURFACE-ROUGHNESS ; SUSCEPTIBILITY ; TOPOGRAPHY ; DESERT ; SCALE ; ZONE |
| 资助项目 | China Natural Science Foundation[42172304] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0904] ; National Key Ramp;D Program of China[2019YFC1509703] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:001022498700011 |
| 资助机构 | China Natural Science Foundation ; China Natural Science Foundation ; China Natural Science Foundation ; China Natural Science Foundation ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; China Natural Science Foundation ; China Natural Science Foundation ; China Natural Science Foundation ; China Natural Science Foundation ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; China Natural Science Foundation ; China Natural Science Foundation ; China Natural Science Foundation ; China Natural Science Foundation ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; China Natural Science Foundation ; China Natural Science Foundation ; China Natural Science Foundation ; China Natural Science Foundation ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China ; National Key Ramp;D Program of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111316]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Wang, Xue-liang; Wang, Shan-shan |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China 4.China Aero Geophys Survey & Remote Sensing Ctr Nat, Beijing 100083, Peoples R China 5.Beijing North Star Technol Dev Co LTD, Beijing 100120, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xue-liang,Sun, Juan-juan,Wang, Shan-shan,et al. Spatiotemporal distribution of regional landslides and erosion rates in Southeastern Tibet[J]. JOURNAL OF MOUNTAIN SCIENCE,2023,20(6):1650-1659. |
| APA | Wang, Xue-liang.,Sun, Juan-juan.,Wang, Shan-shan.,Qi, Sheng-wen.,Zhao, Hai-jun.,...&Wang, Xin-hui.(2023).Spatiotemporal distribution of regional landslides and erosion rates in Southeastern Tibet.JOURNAL OF MOUNTAIN SCIENCE,20(6),1650-1659. |
| MLA | Wang, Xue-liang,et al."Spatiotemporal distribution of regional landslides and erosion rates in Southeastern Tibet".JOURNAL OF MOUNTAIN SCIENCE 20.6(2023):1650-1659. |
入库方式： OAI收割
来源：地质与地球物理研究所
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