Distribution features of stable oxygen isotopes in the typical monsoon temperate glacier region, Mountain Yulong in China
During the summers of 1999 and 2000, sampling was carried out in Mt. Yulong, for the investigation of the spatial distribution of oxygen stable isotope in the atmospheric-glacial-hydro system and similar results obtained in the two years have confirmed our conclusion. There is an evident negative co...
| Main Authors: | , , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Polar Research Institute of China - PRIC
2001
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| Subjects: | |
| Online Access: | http://library.arcticportal.org/2213/ http://library.arcticportal.org/2213/1/A200101003.pdf |
| Summary: | During the summers of 1999 and 2000, sampling was carried out in Mt. Yulong, for the investigation of the spatial distribution of oxygen stable isotope in the atmospheric-glacial-hydro system and similar results obtained in the two years have confirmed our conclusion. There is an evident negative correlation between stable isotopic composition and air temperature precipitation amount, suggesting that there exists a strong "precipitation amount effect" in this typical monsoon temperate-glacier region. There are marked differences between the δ(18)O values in winter accumulated snow, glacial meltwater, summer precipitation and glacier-feeding stream. Under the control of varied climatic conditions, spatial and temporal variations of above glacial-hydro mediums are apparent. Isotopic depletion or fractionation and ionic changes had occurred during the phase change and transformation processes of snow-ice, ice-meltwater, flowing of runoff and contact with bedrock. The variation of stable isotope in a runoff can reflect not only its own flowing process but also its different feeding sources. |
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