TIDAL DISPLACEMENT OF SEA ICE OBSERVED AT NISI-NO-URA COVE ON EAST ONGUL ISLAND, ANTARCTICA
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概要
- 論文の詳細を見る
Vertical displacements of sea ice accompanied by the ocean tide were measured at Nisi-no-ura Cove on East Ongul Island, Antarctica, and compared with the ocean tide observed by pressure type tide gauge installed at the same cove. The displacements of sea ice were measured at two places which were respectively located at 20m (P20M) and 60m (P60M) offshore of bench mark BM No. 1040. The displacement at P20M, where the sea ice is close to the fast ice, showed strong non-linear behavior in both amplitude and phase compared with the ocean tide measured by the bottom-pressure gauge. On the other hand the displacement at P60M was very consistent with the observed ocean tide. According to the 6 measurements made at P60M in the 8 months from May to December, 1993,the differences in amplitude are less than 5% as represented by the ratio of the displacement of the sea ice to the ocean tide.
- 国立極地研究所の論文
著者
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Enomoto Hiroyuki
Kitami Institute Of Technology
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SATO Tadahiro
National Astronomical Observatory of Japan
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Sato Tadahiro
National Astronomical Observatory
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Okano Kenta
Earthquake Research Institute University Of Tokyo
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SAWAGAKI Takanobu
Faculty of Sciences, Hokkaido University
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Sawagaki T
Hokkaido Univ. Sapporo
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