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• 中国百强报刊
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• 中国科学引文数据库源刊
• CN 62-1072/P
• ISSN 1000-0240
• 创刊于1979年
• 主管单位：中国科学院
• 主办单位：中国科学院寒区旱区
•                  环境与工程研究所
•                  中国地理学会

• 研究论文 •

### 天山博格达峰现代冰川的进退变化

1. 1. 兰州大学;
2. 中国科学院兰州冰川冻土研究所
• 出版日期:1984-11-25 发布日期:2012-04-26

### Retreat and Advance of Modern Glaciers in Bogda, Tian Shan

Wu Guanghe1, Zhang Shunying2, Wang Zhongxiang2

1. 1. Department of Geology and Geography, Lanzhou University;
2. Lanzhou Institute of Glaciology and Cryopedology, Academia Sinica
• Online:1984-11-25 Published:2012-04-26

Abstract: On the basis of the standard tree ring sequence, it is pointed out that there were three stages of modern glaciation in Bogda area and the strongest falls on the second. The three modern end-moraines generally existing at the glacial termini were the products of the second and the third stages in the early 18th century, the middle of 19th century and the 1930s respectively.In the first half of this century, the climate turned warmer again. But a wet period lasting 35 years since 1905 made modern glaciers begin their third great retreat as late as in the 1930s. In the 50 years since 1930, glaciers have retreated continuously but slowly with a velocity generally less than 6 m each year. In the ten years from the end of 1950s to the end of 1960s, glaciers retreated with a quickest rate in the past 50 years, and the variations at the glacial termini were most obvious. But at the sametime, some glacial termini in Bogda remained unchanged for a long period.