气候变化领域集成服务门户(CCPortal): Sea ice local surface topography from single-pass satellite InSAR measurements: A feasibility study

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DOI	10.5194/tc-11-1967-2017
	Sea ice local surface topography from single-pass satellite InSAR measurements: A feasibility study
	Dierking W.; Lang O.; Busche T.
发表日期	2017
ISSN	19940416
卷号	11 期号:4
英文摘要	Quantitative parameters characterizing the sea ice surface topography are needed in geophysical investigations such as studies on atmosphere-ice interactions or sea ice mechanics. Recently, the use of space-borne single-pass interferometric synthetic aperture radar (InSAR) for retrieving the ice surface topography has attracted notice among geophysicists. In this paper the potential of InSAR measurements is examined for several satellite configurations and radar frequencies, considering statistics of heights and widths of ice ridges as well as possible magnitudes of ice drift. It is shown that, theoretically, surface height variations can be retrieved with relative errors ≤ ĝ€0.5ĝ€m. In practice, however, the sea ice drift and open water leads may contribute significantly to the measured interferometric phase. Another essential factor is the dependence of the achievable interferometric baseline on the satellite orbit configurations. Possibilities to assess the influence of different factors on the measurement accuracy are demonstrated: signal-to-noise ratio, presence of a snow layer, and the penetration depth into the ice. Practical examples of sea surface height retrievals from bistatic SAR images collected during the TanDEM-X Science Phase are presented. © Author(s) 2017.
学科领域	air-sea interaction; feasibility study; ice drift; interferometer; open water; parameterization; satellite data; sea ice; sea surface height; synthetic aperture radar; TanDEM-X; topography
语种	英语
scopus关键词	air-sea interaction; feasibility study; ice drift; interferometer; open water; parameterization; satellite data; sea ice; sea surface height; synthetic aperture radar; TanDEM-X; topography
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119355
作者单位	Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Bremerhaven, 27570, Germany; Arctic University of Norway, Tromsø, 9019, Norway; Airbus Defence and Space, Potsdam, 14467, Germany; German Aerospace Center (DLR), Weßling, 82234, Germany
推荐引用方式 GB/T 7714	Dierking W.,Lang O.,Busche T.. Sea ice local surface topography from single-pass satellite InSAR measurements: A feasibility study[J],2017,11(4).
APA	Dierking W.,Lang O.,&Busche T..(2017).Sea ice local surface topography from single-pass satellite InSAR measurements: A feasibility study.Cryosphere,11(4).
MLA	Dierking W.,et al."Sea ice local surface topography from single-pass satellite InSAR measurements: A feasibility study".Cryosphere 11.4(2017).