Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study
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 surf...
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ftawi:oai:epic.awi.de:45380 2024-09-09T20:07:07+00:00 Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study Dierking, Wolfgang Lang, Oliver Busche, Thomas 2017-08-29 application/pdf https://epic.awi.de/id/eprint/45380/ https://epic.awi.de/id/eprint/45380/1/tc-11-1967-2017_InSAR_Dierking.pdf https://hdl.handle.net/10013/epic.51532 https://hdl.handle.net/10013/epic.51532.d001 unknown https://epic.awi.de/id/eprint/45380/1/tc-11-1967-2017_InSAR_Dierking.pdf https://hdl.handle.net/10013/epic.51532.d001 Dierking, W. orcid:0000-0002-5031-648X , Lang, O. and Busche, T. (2017) Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study , The Cryosphere, (11), pp. 1967-1985 . doi:10.5194/tc-11-1-2017 <https://doi.org/10.5194/tc-11-1-2017> , hdl:10013/epic.51532 EPIC3The Cryosphere, (11), pp. 1967-1985 Article isiRev 2017 ftawi https://doi.org/10.5194/tc-11-1-2017 2024-06-24T04:18:50Z 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 retrievedwith relative errors < 0.5 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 collectedduring the TanDEM-X Science Phase are presented. Article in Journal/Newspaper Sea ice The Cryosphere Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) The Cryosphere 11 1 1 16 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
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 retrievedwith relative errors < 0.5 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 collectedduring the TanDEM-X Science Phase are presented. |
format |
Article in Journal/Newspaper |
author |
Dierking, Wolfgang Lang, Oliver Busche, Thomas |
spellingShingle |
Dierking, Wolfgang Lang, Oliver Busche, Thomas Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study |
author_facet |
Dierking, Wolfgang Lang, Oliver Busche, Thomas |
author_sort |
Dierking, Wolfgang |
title |
Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study |
title_short |
Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study |
title_full |
Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study |
title_fullStr |
Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study |
title_full_unstemmed |
Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study |
title_sort |
sea ice local surface topography from single-pass satellite insar measurements: a feasibility study |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/45380/ https://epic.awi.de/id/eprint/45380/1/tc-11-1967-2017_InSAR_Dierking.pdf https://hdl.handle.net/10013/epic.51532 https://hdl.handle.net/10013/epic.51532.d001 |
genre |
Sea ice The Cryosphere |
genre_facet |
Sea ice The Cryosphere |
op_source |
EPIC3The Cryosphere, (11), pp. 1967-1985 |
op_relation |
https://epic.awi.de/id/eprint/45380/1/tc-11-1967-2017_InSAR_Dierking.pdf https://hdl.handle.net/10013/epic.51532.d001 Dierking, W. orcid:0000-0002-5031-648X , Lang, O. and Busche, T. (2017) Sea ice local surface topography from single-pass satellite InSAR measurements: a feasibility study , The Cryosphere, (11), pp. 1967-1985 . doi:10.5194/tc-11-1-2017 <https://doi.org/10.5194/tc-11-1-2017> , hdl:10013/epic.51532 |
op_doi |
https://doi.org/10.5194/tc-11-1-2017 |
container_title |
The Cryosphere |
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11 |
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1 |
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1 |
op_container_end_page |
16 |
_version_ |
1809939782449496064 |