Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR025577 |
Assessing the Feasibility of Satellite-Based Thresholds for Hydrologically Driven Landsliding | |
Thomas, Matthew A.1; Collins, Brian D.2; Mirus, Benjamin B.1 | |
2019-11-13 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | Elevated soil moisture and heavy precipitation contribute to landslides worldwide. These environmental variables are now being resolved with satellites at spatiotemporal scales that could offer new perspectives on the development of landslide warning systems. However, the application of these data to hydrometeorological thresholds (which account for antecedent soil moisture and rainfall) first needs to be evaluated with respect to proven, direct measurement-based thresholds that use rain gages and in situ soil moisture sensors. Here we compare ground-based hydrologic data to overlapping satellite-based data before, during, and after a recent season of widespread shallow landsliding in the San Francisco Bay Area (California, USA). We then explore how the remotely sensed information could be used to empirically define hypothetical thresholds for shallow landsliding. We find that the ground-based thresholds developed with a single monitoring station show superior performance because the in situ soil saturation data better reflect the gravity-dominated subsurface flow conditions that are characteristic of hillslopes during the rainy season. Although the satellite-based thresholds can identify most of the landslide days, they include a greater number of false alarms due to overestimates of soil moisture between major storm events. To avoid the type of false alarms that are characteristic of our satellite-based thresholds, further postprocessing of the near-surface hydrologic response data should be integrated into satellite-based model outputs to better reflect gravity-dominated drainage. Our results encourage further deployment of ground stations in landslide-prone terrain and cautious exploration of satellite-based hydrometeorological thresholds where in situ networks are nonexistent. |
英文关键词 | hillslope hydrology in situ monitoring remote sensing landslides thresholds |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496039300001 |
WOS关键词 | INTENSITY-DURATION THRESHOLDS ; CATCHMENT-BASED APPROACH ; LAND-SURFACE PROCESSES ; SOIL-MOISTURE ; RAINFALL THRESHOLDS ; DEBRIS FLOWS ; PRECIPITATION ; INITIATION ; IMPROVE ; MODEL |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/223894 |
专题 | 资源环境科学 |
作者单位 | 1.US Geol Survey, Geol Hazards Sci Ctr, Golden, CO 80401 USA; 2.US Geol Survey, Geol Minerals Energy & Geophys Sci Ctr, 345 Middlefield Rd, Menlo Pk, CA 94025 USA |
推荐引用方式 GB/T 7714 | Thomas, Matthew A.,Collins, Brian D.,Mirus, Benjamin B.. Assessing the Feasibility of Satellite-Based Thresholds for Hydrologically Driven Landsliding[J]. WATER RESOURCES RESEARCH,2019. |
APA | Thomas, Matthew A.,Collins, Brian D.,&Mirus, Benjamin B..(2019).Assessing the Feasibility of Satellite-Based Thresholds for Hydrologically Driven Landsliding.WATER RESOURCES RESEARCH. |
MLA | Thomas, Matthew A.,et al."Assessing the Feasibility of Satellite-Based Thresholds for Hydrologically Driven Landsliding".WATER RESOURCES RESEARCH (2019). |
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