Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/rs14174218 |
Mapping Flash Flood Hazards in Arid Regions Using CubeSats | |
Wang, Zhaocheng; Vivoni, Enrique R. | |
通讯作者 | Vivoni, ER |
来源期刊 | REMOTE SENSING
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EISSN | 2072-4292 |
出版年 | 2022 |
卷号 | 14期号:17 |
英文摘要 | Flash flooding affects a growing number of people and causes billions of dollars in losses each year with the impact often falling disproportionally on underdeveloped regions. To inform post-flood mitigation efforts, it is crucial to determine flash flooding extents, especially for extreme events. Unfortunately, flood hazard mapping has often been limited by a lack of observations with both high spatial and temporal resolution. The CubeSat constellation operated by Planet Labs can fill this key gap in Earth observations by providing 3 m near-daily multispectral imagery at the global scale. In this study, we demonstrate the imaging capabilities of CubeSats for mapping flash flood hazards in arid regions. We selected a severe storm on 13-14 August 2021 that swept through the town of Gila Bend, Arizona, causing severe flood damages, two deaths, and the Declaration of a State of Emergency. We found the spatial extent of flooding can be mapped from CubeSat imagery through comparisons of the near-infrared surface reflectance prior to and after the flash flood event (Delta NIR). The unprecedented spatiotemporal resolution of CubeSat imagery allowed the detection of ponded (Delta NIR <= -0.05) and flood-affected (Delta NIR >= +0.02) areas that compared remarkably well with the 100-year flood event extent obtained by an independent hydraulic modeling study. Our findings demonstrate that CubeSat imagery provides valuable spatial details on flood hazards and can support post-flood activities such as damage assessments and emergency relief. |
英文关键词 | small satellites hydrometeorology urban flooding drylands monsoon near-infrared |
类型 | Article |
语种 | 英语 |
开放获取类型 | gold |
收录类别 | SCI-E |
WOS记录号 | WOS:000852002900001 |
WOS关键词 | CENTRAL ARIZONA ; PRECIPITATION ; DYNAMICS ; PATTERNS ; EVENTS ; SYSTEM ; SCALE |
WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/394193 |
推荐引用方式 GB/T 7714 | Wang, Zhaocheng,Vivoni, Enrique R.. Mapping Flash Flood Hazards in Arid Regions Using CubeSats[J],2022,14(17). |
APA | Wang, Zhaocheng,&Vivoni, Enrique R..(2022).Mapping Flash Flood Hazards in Arid Regions Using CubeSats.REMOTE SENSING,14(17). |
MLA | Wang, Zhaocheng,et al."Mapping Flash Flood Hazards in Arid Regions Using CubeSats".REMOTE SENSING 14.17(2022). |
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