气候变化领域集成服务门户(CCPortal): Impact of Hurricane Maria on Beach Erosion in Puerto Rico: Remote Sensing and Causal Inference

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DOI	10.1029/2020GL087306
	Impact of Hurricane Maria on Beach Erosion in Puerto Rico: Remote Sensing and Causal Inference
	Pérez Valentín J.M.; Müller M.F.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	Beach erosion due to large storms critically affects coastal vulnerability, but is challenging to monitor and quantify. Attributing erosion to a specific storm requires a reliable counterfactual scenario: hypothetical beach conditions, absent the storm. Calibrating models to construct counterfactuals requires numerous observations that are rarely available. Storm paths are unpredictable, making long-term instrumentation of specific beaches costly. Optical remote sensing is hampered by persistent cloud cover. We use Sentinel-1 satellite radar imagery to monitor shoreline changes through clouds and propose regression discontinuity as a strategy to estimate the causal effect of large storms on beach erosion. Applied to 75 beaches across Puerto Rico, the approach detects shoreline changes with a root-mean-square error comparable to the resolution of the imagery. Hurricane Maria caused an erosion of 3 to 5 m along its path, up to 40 m at particular beaches. Results reveal strong local disparities that are consistent with simulated nearshore hydrodynamic conditions. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Beaches; Erosion; Hurricanes; Mean square error; Radar imaging; Satellite imagery; Storms; Synthetic aperture radar; Tracking radar; Causal inferences; Counterfactuals; Nearshore hydrodynamics; Optical remote sensing; regression discontinuity; Root mean square errors; Satellite radar; Shoreline change; Remote sensing; beach erosion; calibration; climate effect; cloud cover; hurricane; long-term change; radar imagery; regression analysis; remote sensing; satellite altimetry; Sentinel; shoreline change; storm; synthetic aperture radar; vulnerability; Puerto Rico
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170541
作者单位	Department of Civil & Environmental Engineering & Earth Sciences, University of Notre Dame, Notre Dame, IN, United States
推荐引用方式 GB/T 7714	Pérez Valentín J.M.,Müller M.F.. Impact of Hurricane Maria on Beach Erosion in Puerto Rico: Remote Sensing and Causal Inference[J],2020,47(6).
APA	Pérez Valentín J.M.,&Müller M.F..(2020).Impact of Hurricane Maria on Beach Erosion in Puerto Rico: Remote Sensing and Causal Inference.Geophysical Research Letters,47(6).
MLA	Pérez Valentín J.M.,et al."Impact of Hurricane Maria on Beach Erosion in Puerto Rico: Remote Sensing and Causal Inference".Geophysical Research Letters 47.6(2020).