乌鲁木齐河源1号冰川冰芯δ^(18)O记录气候意义的再探讨  

Re examination on the Climatological significance of the ice core δ^(18)O records from the No.1 Glacier at the head of rümqi River

作　　者：侯书贵[1] 秦大河[1] 任贾文[1] 

机构地区：[1]中国科学院兰州冰川冻土研究所冰芯与寒区环境实验室,兰州730000

出　　处：《地球化学》1999年第5期438-442,共5页Geochimica

基　　金：国家自然科学基金!( 编号:49571020 ;49871022);中国科学院"九五"重大项目!A ( 编号: KZ951A140

摘　　要：根据乌鲁木齐河源１ 号冰川冰芯δ１８ Ｏ 记录与大西沟气象站实测的气温资料， 进一步系统地探讨了所研究区域冰芯δ１８ Ｏ 记录的气候意义。结果表明，冰芯δ１８ Ｏ 记录与夏半年（５月～１０ 月）平均气温之间存在一定程度的正相关关系，而与冬半年（１１ 月～次年４ 月） 平均气温不存在稳定的相关性。该结果拓展了中、低纬主地区山地冰川冰芯δ１８ Ｏ 记录作为温度指标的适用性。The ice core δ18O records from the No.1 Glacier at the headwater of rümqi River were used to test the relationship between δ18O and contemporaneous surface air temperature at the nearby Daxigou Meteorological Station (～2 km away from the ice core drilling site). Although the ice core records of annually averaged δ18O are positively correlated with contemporaneous air temperature, especially summer air temperature, the correlation is less significant than that for the precipitation samples due to depositional and post depositional modification processes. However, the climatological significance of the ice core δ18O records can be still preserved to a certain degree, which might extend the application of high altitude and sub tropical ice core δ18O records for paleoclimate reconstruction.

关 键 词：冰川 冰芯 Δ^18O记录 气候意义 古气候 

分 类 号：P532[天文地球—古生物学与地层学]