Study of Holocene glacier degradation in central Asia by isotopic methods for long-term forecast of climate changes  

作　　者：Vladimir I. Shatravin Tamara V. Tuzova 

机构地区：[1]Tien-Shan Mountain Scientific Center, Institute of Water Problems and Hydro Power, National Academy of Sciences of the Kyrgyz Republic [2]Institute of Water Problems and Hydro Power, National Academy of Sciences of the Kyrgyz Republic

出　　处：《Research in Cold and Arid Regions》2013年第1期114-125,共12页寒旱区科学（英文版）

基　　金：the program of the Institute of Water Problems and Hydro Power of National Academy of Sciences of the Kyrgyz Republic

摘　　要：This article presents a summary of our studies of Holocene moraines and glaciers of the Tien-Shan, Pamir, and Himalaya moun- mills with the purpose of providing pattern regularity of the Holocene glaciation decomposition. We developed a method for ob- taining reliable radiocarbon dating of moraines with the use of autochthonous organic matter dispersed in fine-grained morainic material, as well there were shown new possibilities of isotope-oxygen and isotope-uranium analysis for the Holocene glaciations dynamics. We found that Holocene glaciations disintegrate stadiaUy according to the decaying principle, and seven main stages may be distinguished. We achieved the absolute dating of the first three stages, identifying these periods as 8,000, 5,000, and 3,400 years ago. The application of the above-mentioned isotope methods of the Holocene glaciations and moraines study will allow re- searchers to improve the offered model of the Holocene glaciations disintegration; it will be great contribution to salvation of the problem of long-term climatic and glaciations forecast.This article presents a summary of our studies of Holocene moraines and glaciers of the Tien-Shan, Pamir, and Himalaya moun- mills with the purpose of providing pattern regularity of the Holocene glaciation decomposition. We developed a method for ob- taining reliable radiocarbon dating of moraines with the use of autochthonous organic matter dispersed in fine-grained morainic material, as well there were shown new possibilities of isotope-oxygen and isotope-uranium analysis for the Holocene glaciations dynamics. We found that Holocene glaciations disintegrate stadiaUy according to the decaying principle, and seven main stages may be distinguished. We achieved the absolute dating of the first three stages, identifying these periods as 8,000, 5,000, and 3,400 years ago. The application of the above-mentioned isotope methods of the Holocene glaciations and moraines study will allow re- searchers to improve the offered model of the Holocene glaciations disintegration; it will be great contribution to salvation of the problem of long-term climatic and glaciations forecast.

关 键 词：MORAINES GLACIATION HOLOCENE climate changes long-term forecast central Asia 

分 类 号：P343.6[天文地球—水文科学]