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TIDAL DEFLECTION OF ROSS ICE SHELF, ANTARCTICA, OBSERVED BY SENTINEL-1A DOUBLE-DIFFERENTIAL INTERFEROMETRIC SAR

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Title
TIDAL DEFLECTION OF ROSS ICE SHELF, ANTARCTICA, OBSERVED BY SENTINEL-1A DOUBLE-DIFFERENTIAL INTERFEROMETRIC SAR
Other Titles
센티넬-1A 레이더 이중차분간섭 영상으로 관측된 로스 빙붕의 조석변형
Authors
Lee, Hoonyol
Han, Hyangsun
Jin, Hyorim
Han, Soojeong
Keywords
DDInSAR; Ross Ice Shelf; Sentinel-1A; grounding line; hinge zone; tidal deflection
Issue Date
2017
Citation
Lee, Hoonyol, et al. 2017. TIDAL DEFLECTION OF ROSS ICE SHELF, ANTARCTICA, OBSERVED BY SENTINEL-1A DOUBLE-DIFFERENTIAL INTERFEROMETRIC SAR. 2017 International Geoscience and Remote Sensing Symposium. Fort Worth Convention Center. 2017.07.23~2017.07.28.
Abstract
This paper reports the tidal deflection of Ross Ice Shelf, Antarctica, observed from Sentinel-1A data processed by using double-differential interferometric synthetic aperture radar (DDInSAR) technique. Sentinel-1A single look complex SAR data of 2015-2016, along the east and the west coast of Ross Ice Shelf, were obtained and interferometrically processed by Sentinel Application Platform (SNAP) program. GETASSE30 digital elevation model was used to remove the topographic fringes. After the phase unwrapping using SNAPHU program, the two interferograms were subtracted to obtain DDInSAR image to highlight the tidal deflection signals under the assumption of steady gravitational glacial flow. As a result, we can identify grounding lines and hinge zones in the east and the west coast of Ross Ice Shelf. The wider hinge zone in the west indicates thicker ice shelf than the east. Comparison of the tidal deflection with tidal model remind us the importance of barometric correction.
URI
http://repository.kopri.re.kr/handle/201206/8264
Conference Name
2017 International Geoscience and Remote Sensing Symposium
Conference Place
Fort Worth Convention Center
Conference Date
2017.07.23~2017.07.28
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