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Validation of grounding line of the East Antarctic Ice Sheet derived by ERS-1/2 interferometric SAR data
https://doi.org/10.15094/00003145
https://doi.org/10.15094/00003145a59ef988-5b31-40d4-8cea-e91dab64fca7
名前 / ファイル | ライセンス | アクション |
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KJ00003562937 (14.8 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2005-10-01 | |||||
タイトル | ||||||
タイトル | Validation of grounding line of the East Antarctic Ice Sheet derived by ERS-1/2 interferometric SAR data | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | SAR | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Interferometry | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | grounding line | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | ERS-1, ADD | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00003145 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
論文名よみ | ||||||
その他のタイトル | Validation of grounding line of the East Antarctic Ice Sheet derived by ERS-1/2 interferometric SAR data | |||||
著者名(英) |
Yamanokuchi, Tsutomu
× Yamanokuchi, Tsutomu× Doi, Koichiro× Shibuya, Kazuo |
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著者所属(英) | ||||||
en | ||||||
SOKENDAI, Remote Sensing Technology Center of Japan | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | We applied Synthetic Aperture Radar (SAR) Interferometry (InSAR) in the East Antarctic marginal ice zone between 25°W and 40°E . ERS-1/2 tandem data received at Syowa Station in 1996 were mainly used. ERS interferograms with range-azimuth coordinates were transformed into World Geodetic System 1984 (WGS84) coordinates. For this transform, we used the RAMP (RADARSAT Antarctic Mapping Project) image which is already defined by the WGS84 reference system. Significant features in the ERS intensity image show similar textures to those in the RAMP image. By taking the above features in the ERS intensity image as ground control points of known WGS84 geodetic coordinates from the RAMP image, we assigned WGS84 coordinate values to any element in the ERS scene by a least-squares fitting with a second-order polynomial function. It is noted that the ERS InSAR scene has the same WGS84 coordinate system as the ERS intensity scene. We extracted and digitized grounding lines from the ERS InSAR scene as a curve of steeply changing fringe pattern at the ocean-continent boundary. Features of the grounding line in the Antarctic Digital Database (ADD) were monotonous as interpreted from blurring of the Landsat image on the ice shelf and the ice sheet. In contrast, InSAR-derived grounding lines delineated complex features as a result of ocean tidal motion at the ocean-continent boundary. For example, the ADD shows a peninsula around 15°E , but it actually is a group of snow-covered islands or ice rises. The positional discrepancy of the ADD grounding line from the InSAR-derived grounding line reaches 5000m around Riiser-Larsenhalvya, and about 1200m around Padda and Skallen. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1130866X | |||||
書誌情報 |
Polar geoscience 巻 18, p. 1-14, 発行日 2005-10 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |