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- W1640090331 abstract "Accumulation rates in the eastern part of Ronne Ice Shelf were determined by isotopic stratigraphy ( 18 O). The samples were taken from snow-pits dug during the Filchner I and II operations in 1984 and 1986. In general, the accumulation rate decreases towards the south; the greatest decrease, from 21.3 to 13.3 g cm −2 a −1 , was observed between Filchner Station and measuring point 341, sited 270 km up-stream of the ice edge. The δ 18 O values of the near-surface layers vary between −25 and -29‰. The 18 O content in the more southerly part is progressively depleted in the direction of Möllereisstrom, paralleling a decrease in the accumulation rate. Near the ice edge the 18 O content decreases to the west. A 100 m ice core drilled in 1984 at point 340, 220 km from the ice edge, probably goes back to A.D. 1460; it has been dated by isotopic stratigraphy. The accumulation rate up-stream of the drilling site was deduced from the sequence of annual layers, using a simple ice-flow model. The accumulation shows strong variations over the last 200 years, which may be caused in part by local variations in the accumulation on Ronne Ice Shelf." @default.
- W1640090331 created "2016-06-24" @default.
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- W1640090331 date "1988-01-01" @default.
- W1640090331 modified "2023-10-17" @default.
- W1640090331 title "Accumulation and Ice-Core Studies on Filchner-Ronne Ice Shelf, Antarctica" @default.
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- W1640090331 doi "https://doi.org/10.1017/s0260305500006273" @default.
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