干旱区生态环境知识资源中心(Arid): 天山东部冰川雪坑离子浓度特征的对比研究以奎屯河哈希勒根51号冰川和哈密庙尔沟平顶冰川为例

Arid

	天山东部冰川雪坑离子浓度特征的对比研究以奎屯河哈希勒根51号冰川和哈密庙尔沟平顶冰川为例
其他题名	Ion Concentration in Snow Pits on Glaciers in Eastern Tianshan MountainTake Haxilegen Glacier No.51 of Kuitun River and Hami Miaoergou Flat-Topped Glacier As an Example
	李向应 1; 刘时银 1; 韩添丁 1; 李忠勤 1; 卢爱刚 2
ISSN	1001-8166
出版年	2008
卷号	23 期号:12 页码:1268-1276
中文摘要	对2004年获取的天山奎屯河哈希勒根51号冰川1个雪坑和哈密庙尔沟平顶冰川4个雪坑的离子浓度特征进行了研究,结果表明:Ca~(2+)、NO_3~-和SO~(2-)_4是哈密庙尔沟平顶冰川雪坑雪层和积累区雪坑底部冰中的主要离子(尤其是Ca~(2+)),其雪层中的主要阳离子关系可在底部冰中得以较好的反映,但雪层中各离子浓度与海拔的相关性不明显,可能与海拔的跨度较小和挖取的雪坑较疏有关;雪坑底部冰中的离子浓度与海拔间明显的相关性说明淋融作用随着海拔升高、气温降低而逐渐减弱。SO~(2-)_4和Ca~(2+)是奎屯河哈希勒根51号冰川雪坑中的主要离子(尤其是SO_4~(2-),其雪坑离子化学特征与哈密庙尔沟平顶冰川差别较大,可能与哈密庙尔沟平顶冰川处于塔克拉玛干沙漠、古尔班通古特沙漠和鄯善沙漠的下风向相关,还可能与雪层内淋融作用的强弱和沉积通量的高程效应有关。哈密庙尔沟平顶冰川积累区雪坑中NH4+、NO_3~-和K~+的Cs/Ci较Ca~(2+)、Mg~(2+)和Na~+要大,奎屯河哈希勒根51号冰川Na~+和NH_4~+)的"雪冰比"较Cl~-、SO_4~(2-)、Mg~(2+)和Ca~(2+)要大,说明这两条冰川雪坑中的Ca~(2+)和Mg~(2+)信号较其它离子可能更易于在冰芯记录中保存下来,为冰芯研究和古气候记录的恢复提供了保障。
英文摘要	The ion concentrations were studied in both four snow pits on Hami Miaoergou Flat-Topped Glacier and one snow pit on Haxilegen Glacier No.51 of Kuitun river in eastern Tianshan Mountain,and both snow pits were retrieved in 2004.The results show that the Ca~(2+),NO~-_3 and SO~(2-)_4,particularly Ca~(2+),are major ions in the snow of snow pits in both ablation and accumulation area and also in the ice of snow pits in accumulation area on Hami Miaoergou Flat-Topped Glacier,where the relationships among major cation concentrations in snow of snow pits can be revealed by ion concentrations in the ice of snow pits,but the correlation between ion concentrations in the snow of snow pits and elevation is not obvious,which probably can be attributed to the narrow span of elevation and sparse snow pits on glacier.However,the good correlation between ion concentrations in the ice of snow pits and elevation indicates that the elution process weakened gradually with the elevation rise and temperature decrease.The SO~(2-)_4 and Ca~(2+),particularly SO~(2-)_4,are major ions in snow and ice of snow pits on Haxilegen Glacier No.51 of Kuitun river,where its ion chemistry in snow pits is different from that on Hami Miaoergou Flat-Topped Glacier,which is most likely related to the geographical location of Hami Miaoergou Flat-Topped Glacier that is located in the leeward site of the Taklimakan desert,Shanshan desert and Gurbantunggut desert,and also probably associated with the elution process in snow pits and altitude effect of deposition flux.The ratios(Cs/Ci)of NH+4,NO~-_3and K+ is bigger than that of Ca~(2+),Mg~(2+)and Na~+ of snow pits in accumulation area on Hami Miaoergou Flat-Topped Glacier,and also the ratios of Na+ and NH~+_4 is bigger than that of Cl~-,SO~(2-)_4,Mg~(2+) and Ca~(2+) of snow pits on Haxilegen Glacier No.51 of Kuitun river,which indicate that the signals of Ca~(2+) and Mg~(2+) in snow pits both on Hami Miaoergou Flat-Topped Glacier and Haxilegen Glacier No.51 of Kuitun river may be easier to be preserved in ice cores than other ions in snow pits.This guaranteed studies of ice core and reconstrution of paleoclimate records on these two glaciers.
中文关键词	雪坑 ; 离子浓度 ; 奎屯河哈希勒根51号冰川 ; 哈密庙尔沟平顶冰川
英文关键词	Snow pits Ion concentration Haxilegen Glacier No.51 of Kuitun river Hami Miaoergou Flat-Topped Glacier
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:3434531
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/222148
作者单位	1.中国科学院寒区旱区环境与工程研究所, 冰冻圈科学国家重点实验室寒旱区流域水文与应用生态实验室, 兰州, 甘肃 730000, 中国; 2.渭南师范学院环境与生命科学系, 渭南, 陕西 714000, 中国
推荐引用方式 GB/T 7714	李向应,刘时银,韩添丁,等. 天山东部冰川雪坑离子浓度特征的对比研究以奎屯河哈希勒根51号冰川和哈密庙尔沟平顶冰川为例[J]. 中国科学院西北生态环境资源研究院,2008,23(12):1268-1276.
APA	李向应,刘时银,韩添丁,李忠勤,&卢爱刚.(2008).天山东部冰川雪坑离子浓度特征的对比研究以奎屯河哈希勒根51号冰川和哈密庙尔沟平顶冰川为例.,23(12),1268-1276.
MLA	李向应,et al."天山东部冰川雪坑离子浓度特征的对比研究以奎屯河哈希勒根51号冰川和哈密庙尔沟平顶冰川为例".23.12(2008):1268-1276.