Formation processes of a pocket consisting of bubble-free ice in Hamma ice cliff, Soya Coast, East Antarctica.
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Accession number;03A0155375
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| Title;Formation processes of a pocket consisting of bubble-free ice in Hamma ice cliff, Soya Coast, East Antarctica. |
| Author;
IIZUKA Y
(National Inst. Polar Res., Tokyo)
SATAKE H
(Toyama Univ., Toyama)
WATANABE O
(National Inst. Polar Res., Tokyo)
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Journal Title;Polar Meteorol Glaciol (Nat Inst Polar Res)
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Journal Code:X0871A
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ISSN:1344-3437
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VOL.;NO.16;PAGE.53-60(2002)
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| Figure&Table&Reference;FIG.5, REF.13 |
| Pub. Country;Japan |
| Language;English |
| Abstract;To clarify the basal hydrology of Soya drainage, East Antarctica, we studied the formation processes of a pocket consisting of bubble-free ice in Hamna ice cliff, Soya Coast by using stable isotope ratios(.DELTA.18O and .DELTA.D). The stable isotopes of this bubble-free ice are almost the same values without .DELTA.-value fluctuations as those from Rayleigh-type fractionation; isotopically, the bubble-free ice was heavier by 3.8 and 27.PERMIL. for .DELTA.18O and .DELTA.D, respectively, than the neighboring bubbly ice. These results suggest that the pocket was formed by meltwater refreezing during the discharge of water to the lower reach under the Soya drainage. Meltwater under the Soya drainage is considered to have flowed through R-channels. (author abst.) |
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