Arid
DOI10.3390/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
EISSN2072-4292
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
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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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