DISTRIBUTION OF MEAN δ^<18>O VALUES OF SURFACE SNOW LAYERS AND THEIR DEPENDENCE ON AIR TEMPERATURE IN ENDERBY LAND-EAST QUEEN MAUD LAND, ANTARCTICA

P(論文) Oxygen isotope analyses of surface snow layers have been carried out in Enderby Land-East Queen Maud Land, East Antarctica. The δ^<18>O values decrease with various parameters including elevation (E : m), distance from the coast (L : km) : [δ^<18>O(‰)=-0.0069E-0.0126L-18.5], and in...

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Bibliographic Details
Main Authors: サトウ, カズヒデ, ワタナベ, オキツグ, SATOW, Kazuhide, WATANABE, Okitsugu
Language:English
Published: National Institute of Polar Research 1992
Subjects:
East Antarctica
Queen Maud Land
Antarc*
Antarctica
Enderby Land
Polar meteorology and glaciology
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
Online Access:https://nipr.repo.nii.ac.jp/record/3705/files/KJ00002409934.pdf
https://doi.org/10.15094/00003705
https://nipr.repo.nii.ac.jp/records/3705
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Summary:P(論文) Oxygen isotope analyses of surface snow layers have been carried out in Enderby Land-East Queen Maud Land, East Antarctica. The δ^<18>O values decrease with various parameters including elevation (E : m), distance from the coast (L : km) : [δ^<18>O(‰)=-0.0069E-0.0126L-18.5], and in particular with mean annual surface temperatures (T : ℃), according to a good linear relationship [δ^<18>O(‰)=0.834T-8.7] in the temperature range from -20 to -55℃. The relationship with temperature is similar to that derived from a simple model in which an air mass is progressively cooled under Rayleigh conditions as it moves toward the inland plateau. This also suggests that δ^<18>O values are very closely related to condensation temperature at the top of the inversion layer where snowfall precipitation is formed. departmental bulletin paper

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