Comparisons of Stable Isotopic Fractionation in Winter and Summer at Baishui Glacier No. 1, Mt. Yulong
Received date: 2005-11-30
Revised date: 2006-03-07
Online published: 2006-05-25
Supported by
National Natural Science Foundation of China, No.40501014; No.90511007; Talent Culture Project for Special Subject of Glaciology and Geocryology, No.J0130084
Based on the data of δ18O in surface snow, snow pits, meltwater and the glacier-fed river water at Baishui glacier No. 1, Mt. Yulong, the isotopic fractionation behaviors in the typical monsoonal temperate glacier system in winter and summer were compared. The results indicate that the isotopic fractionation degree in summer is larger than that in winter, suggesting that the snow/ice melting is more intense in summer. Moreover, whenever it is in winter or summer, from surface snow to meltwater, and to glacier-fed river water, the gradient of δ18O with altitude gradually increases. It shows that the degree of isotopic fractionation gradually strengthens when surface snow being converted into meltwater and finally into glacial river water, which suggests that the influence of post-depositional processes on δ18O gradient in the monsoonal temperate glacier region differs spatially.
Key words： Yunnan; Yulong Mountain; monsoonal temperate-glacier; δ18O
PANG Hongxi, HE Yuanqing, LU Aigang, ZHAO Jingdong, NING Baoying, YUAN Lingling, SONG Bo, ZHANG Ningning . Comparisons of Stable Isotopic Fractionation in Winter and Summer at Baishui Glacier No. 1, Mt. Yulong[J]. Acta Geographica Sinica, 2006 , 61(5) : 501 -509 . DOI: 10.11821/xb200605006
[1] Shi Yafeng, Huang Maohuan, Yao Tandong et al. Glaciers and Their Environments in China. Beijing: Science Press, 2000. 26-27.
[施雅风, 黄茂桓, 姚檀栋 等. 中国冰川与环境. 北京: 科学出版社, 2000. 26-27.]
[2] Colbeck S C. A theory of water percolation in snow. J. Glaciol., 1972, 11(63): 369-385.
[3] Colbeck S C, Anderson E A. The permeability of a melting snow covers. Water Resource Research, 1982, 18(4): 904-908.
[4] Marsh P, Wood M K. Melt water movement in natural heterogeneous snow covers. Water Resource Research, 1985, 21(11): 1710-1716.
[5] He Yuanqing, Yao Tandong, Zhang Xiaojun et al. The contemporary processes of the environmental information in the atmosphere-glacier-runoff system in an area of typical monsoon temperate glacier. Science in China (D Series), 2001, 44(12): 275-283.
[何元庆, 姚檀栋, 张晓君 等. 典型季风温冰川区大气-冰川-融水径流系统内环境信息的现代变化过程. 中国科学(D辑), 2001, 31(增刊): 221-227.]
[6] He Yuanqing, Yao Tandong, Theakstone W H et al. Recent climate significance indicated by the chemical signals in a shallow ice core at a glacier in south-Asia monsoon region. Journal of Asia Earth Science, 2002, 20(3): 289-296.
[7] He Yuanqing, Yao Tandong, Theakstone W H et al. The irregular pattern of isotopic and ionic signals in a typical monsoon temperate-glacier area, Mt. Yulong, China. Annals of Glaciology, 2002, 35: 167-174.
[8] He Yuanqing, Zhang Zhonglin, Yao Tandong et al. Modern changes of the climate and glaciers in China's monsoonal temperate-glacier region. Acta Geographica Sinica, 2003, 58(4): 550-558.
[何元庆, 张忠林, 姚檀栋 等. 中国季风温冰川区近代气候变化与冰川动态. 地理学报, 2003, 58(4): 550-558.]
[9] Stichler W, Schotterer U, Frohlich K et al. Influence of sublimation on stable isotope records recovered from high-altitude glaciers in the tropical Andes. J. Geophys. Res., 2001, 106(D19): 22613-22620.
[10] Moser H, Stichler W. Deuterium and oxygen-18 contents as index of the properties of snow blankets. In: Snow Mechanics, Proceedings, Grindelwald Symposium, April 1974. IAHS Publication 114, 1975. 122-135.
[11] Bùason T. Equations of isotope fractionation between ice and water in a melting snow column with continuous rain and percolation. Journal of Glaciology, 1972, 11: 387-405.
[12] Schlosser E. Effects of seasonal variability of accumulation on yearly mean ?啄18O values in Antarctic snow. Journal of Glaciology, 1999, 45: 463-468.
[13] Niewodniczanski J, Grabczak J, Baranski L et al. The attitude effect on the isotopic composition of snow in high mountains. Journal of Glaciology, 1981, 27: 99-111.
[14] He Yuanqing, Theakstone, Shi Yafeng et al. The isotopic record at an alpine glacier and its implications for local climatic changes and isotopic homogenization processes. Journal of Glaciology, 2001, 47(156): 147-151.
[15] Krishnamurthy V, Shukla J. Intraseasonal and interannual variability of rainfall over Indian. Journal of Climate, 2000, 13(24): 4366-4377.
[16] Oerter H, Baker D, Stichler W et al. Isotope studies of ice cores from a temperate alpine glacier (Vernagtferner, Austria) with respect to the meltwater flow. Annals of Glaciology, 1985, 7: 90-93.
[17] Delmas B J, Legrand M, Holdworth G. Snow chemistry on Mount Logan, Yukon Territory, Canada. Annals of Glaciology, 1985, 7: 213-213.
[18] Poage M A, Chamberlain C P. Empirical relationships between elevation and the stable isotope composition of precipitation and surface waters. American Journal of Science, 2001, 301: 1-15.
[19] Li Zhen, Yao Tandong, Tian Lide et al. Variations of δ18O in precipitation from the Muztagata glacier, east Pamirs. Science in China (D Series), 2006, 49(1): 36-42.
[李真, 姚檀栋, 田立德 等. 慕士塔格冰川地区降水中δ18O的时空变化特征. 中国科学 (D辑), 2006, 36(1): 17-22.]
[20] Li Yuefang, Yao Tandong, Huang Cuilan et al. Spatial variations of chemical species in Guliya ice cap. Journal of Glaciology and Geocryology, 1993, 15(3): 467-473.
[李月芳, 姚檀栋, 黄翠兰 等. 古里雅冰帽中化学成分的空间变化. 冰川冻土, 1993, 15(3): 467-473.]
[21] Kang Shichang, Kreutz K J, Mayewski P A et al. Stable-isotopic composition of precipitation over the northern slope of the central Himalaya. Journal of Glaciology, 2002, 48(163): 519-526.
[22] He Yuanqing, Pang Hongxi, Lu Aigang et al. Spatial and temporal variations of the stable isotopes in snowpacks and glacial runoff in different types of glacier areas in China. Journal of Glaciology and Geocryology, 2006, 28(1): 22-28.
[何元庆, 庞洪喜, 卢爱刚 等. 中国西部不同类型冰川区积雪及其融水径流中稳定同位素比率的时空变化及其气候效应. 冰川冻土, 2006, 28(1): 22-28.]
[23] Zhang Xinping, Nakawo M, Yao Tandong et al. Variations of stable isotopic composition in precipitation on the Tibetan Plateau and its adjacent regions. Science in China (Series D), 2002, 45(6): 481-493.
[章新平, 中尾正义, 姚檀栋 等. 青藏高原及其毗邻地区降水稳定同位素成分的时空变化. 中国科学(D辑), 2001, 31(5): 353-361.]
[24] Han Qingzhi, Zeng Kefeng, Liang Xing et al. Study on D, 18O isotopes of precipitation in LEI-BO area, southwest Sichuan. Geological Science and Technology Information, 1998, 17(suppl. 2): 106-110.
[韩庆之, 曾克峰, 梁杏 等. 川西南雷波地区降水的D和18O同位素研究. 地质科技情报, 1998, 17(增刊2): 106-110.]
[25] Yu Jinsheng, Zhang Hongbin, Yu Fuji et al. Oxygen isotopic composition of meteoric water in the eastern part of Xizang. Geochimica, 1980, (2): 113-121.
[于津生, 张鸿斌, 虞福基 等. 西藏东部大气降水氧同位素组成特征. 地球化学, 1980, (2): 113-121.]
[26] Morse H, Stichler W. Deuterium measurements on snow samples from the Alps. In: Isotope Hydrology 1970, Proceedings of Symposium on the Use of Isotopes in Hydrology, 1970, Vienna. International Atomic Energy Agency, 1970, 43-56.
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