DOI: 10.5194/tc-11-1967-2017
Scopus记录号: 2-s2.0-85028616922
论文题名: Sea ice local surface topography from single-pass satellite InSAR measurements: A feasibility study
作者: Dierking W ; , Lang O ; , Busche T
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期: 4 起始页码: 1967
结束页码: 1985
语种: 英语
英文关键词: air-sea interaction
; feasibility study
; ice drift
; interferometer
; open water
; parameterization
; satellite data
; sea ice
; sea surface height
; synthetic aperture radar
; TanDEM-X
; topography
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75513
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany; Arctic University of Norway, Tromsø, Norway; Airbus Defence and Space, Potsdam, Germany; German Aerospace Center (DLR), Weßling, Germany
Recommended Citation:
Dierking W,, Lang O,, Busche T. Sea ice local surface topography from single-pass satellite InSAR measurements: A feasibility study[J]. Cryosphere,2017-01-01,11(4)