Study on the Snowfall Amount Triggering Regional Avalanches in Southeastern Tibet
文献类型：期刊论文
| 作者 | Wei, Haozhuo1,2; Wang, Yan1; Wang, Shaoliang3; Hao, Jiansheng1; Chen, Guoqing1; Fu, Xiaoqian1 |
| 刊名 | WATER
 |
| 出版日期 | 2025-05-27 |
| 卷号 | 17期号:11页码:1631 |
| 关键词 | extreme events heavy snowfall snow avalanche threshold study |
| DOI | 10.3390/w17111631 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Global climate warming has exacerbated extreme snowfall events. The Southeastern Tibet (ST) region has become a high-incidence area for avalanches due to its unique topographical and climatic conditions. However, current research has paid insufficient attention to the thresholds for avalanches triggered by extreme snowfall. Therefore, the aim of this study is to construct the I-D (intensity-duration) thresholds for avalanche events triggered by extreme snowfall in southeastern Tibet, providing a scientific basis for disaster prevention and mitigation work in this region. Based on the snowfall data from 1951 to 2020, this study calculated four extreme snowfall indices, namely SF1d, SF90p, SF95p, and SF99p, to determine extreme snowfall events. And 33 avalanche events during this period were verified through the confusion matrix. This study found that the intensity of extreme snowfall events in southeastern Tibet has increased while the frequency has decreased. The I-D threshold parameters alpha (from 5.79 to 14.88) and beta (from -2.81 to -0.66) within the study area were determined, and the overall threshold is I = 9.29 x D-2.27 (D represents the duration of snowfall, with the unit being days.). It was also found that extreme snowfall in the study area has a significant positive correlation in with the ST. The terrain has a greater impact on the snowfall intensity, but its regulation on the duration of events is limited. Overall, in southeastern Tibet, if the single-day snowfall exceeds 12.38 mm (the regional average value of the SF1d index) or the cumulative snowfall within the previous 30 days exceeds 64.85 mm (the regional average value of the three indices of SF90p, SF95p, and SF99p), it can be considered that an extreme snowfall event has occurred. At the same time, the threshold of I = 9.29 x D-2.27 can be used to forecast avalanches triggered by extreme snowfall events in the entire region. |
| URL标识 | 查看原文 |
| WOS关键词 | EXTREME SNOWFALL ; PRECIPITATION ; EVENTS ; TEMPERATURE ; PLATEAU ; WESTERN ; RISK |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001507528000001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/214641]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Wang, Yan |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 2.Tianjin Normal Univ, Sch Geog & Environm Sci, Tianjin 300387, Peoples R China; 3.Yajiang Clean Energy Sci & Technol Res Beijing Co, Beijing 100038, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Haozhuo,Wang, Yan,Wang, Shaoliang,et al. Study on the Snowfall Amount Triggering Regional Avalanches in Southeastern Tibet[J]. WATER,2025,17(11):1631. |
| APA | Wei, Haozhuo,Wang, Yan,Wang, Shaoliang,Hao, Jiansheng,Chen, Guoqing,&Fu, Xiaoqian.(2025).Study on the Snowfall Amount Triggering Regional Avalanches in Southeastern Tibet.WATER,17(11),1631. |
| MLA | Wei, Haozhuo,et al."Study on the Snowfall Amount Triggering Regional Avalanches in Southeastern Tibet".WATER 17.11(2025):1631. |
入库方式： OAI收割
来源：地理科学与资源研究所
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