气候变化领域集成服务门户(CCPortal): Surface materials and landforms as controls on InSAR permanent and transient responses to precipitation events in a hyperarid desert, Chile

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DOI	10.1016/j.rse.2019.111544
	Surface materials and landforms as controls on InSAR permanent and transient responses to precipitation events in a hyperarid desert, Chile
	Jordan T.E.; Lohman R.B.; Tapia L.; Pfeiffer M.; Scott C.P.; Amundson R.; Godfrey L.; Riquelme R.
发表日期	2020
ISSN	00344257
卷号	237
英文摘要	Ground-based monitoring and remote sensing of extreme rain events in the hyperarid Atacama Desert, Chile, reveal a complex relationship between precipitation, soil types and interferometric synthetic aperture radar (InSAR) coherence. These integrated analyses allow examination of temporal and spatial variations of the soil moisture response between locations dominated by sulfate soils and those with immature, silicate-mineral soils. The radar dataset captures at least four separate rain events within the 2015–2017 timeframe, two of which were regionally devastating. The lack of vegetation in this region allows us to discriminate between contributions to the InSAR coherence from permanent changes of the landscape (e.g., erosion or deposition) and transient changes associated with soil moisture variability. The spatial distribution and character of the transient InSAR response depends strongly on soil type, and is remarkably repeatable between rain events. The areas that experienced permanent changes included river channels, steep slopes, playas, and sites of anthropogenic activity, such as roads, mines, or telescope construction. Ground-based observations of soil moisture after each event also exhibit a strong dependence on soil type. The observations presented here demonstrate how InSAR data can constrain variations in soil moisture with high spatial resolution over large regions, complementing the higher-sensitivity but sparser field sites and enabling discrimination of inter-event variability and analysis of longer-term changes in soil mineralogy in arid regions. © 2019 Elsevier Inc.
英文关键词	Active radar; Interferometric coherence; Remote sensing; Sentinel; Soil moisture; Soils
语种	英语
scopus关键词	Interferometry; Rain; Remote sensing; Sensitivity analysis; Silicate minerals; Soil moisture; Soils; Sulfur compounds; Synthetic aperture radar; Transient analysis; Atacama desert , Chile; Ground-based monitoring; Ground-based observations; High spatial resolution; Interferometric coherence; Interferometric synthetic aperture radars; Sentinel; Temporal and spatial variation; Soil surveys; arid region; ground-based measurement; human activity; precipitation (climatology); radar; remote sensing; Sentinel; silicate; soil type; spatial distribution; spatiotemporal analysis; sulfate; synthetic aperture radar; Atacama Desert; Chile
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179548
作者单位	Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United States; Departamento de Ciencias Geológicas, Universidad Católica del Norte, Antofagasta, Chile; Departamento de Ingeniería y Suelos, Universidad de Chile, La Pintana, Santiago, Chile; School of Earth and Space Exploration, Arizona State University, Tempe, AZ, United States; Department of Environmental Science, Policy & Management, University of California at Berkeley, Berkeley, CA, United States; Department of Earth and Planetary Sciences, Rutgers University, Piscataway, NJ, United States
推荐引用方式 GB/T 7714	Jordan T.E.,Lohman R.B.,Tapia L.,et al. Surface materials and landforms as controls on InSAR permanent and transient responses to precipitation events in a hyperarid desert, Chile[J],2020,237.
APA	Jordan T.E..,Lohman R.B..,Tapia L..,Pfeiffer M..,Scott C.P..,...&Riquelme R..(2020).Surface materials and landforms as controls on InSAR permanent and transient responses to precipitation events in a hyperarid desert, Chile.Remote Sensing of Environment,237.
MLA	Jordan T.E.,et al."Surface materials and landforms as controls on InSAR permanent and transient responses to precipitation events in a hyperarid desert, Chile".Remote Sensing of Environment 237(2020).