Climatic records in a firn core from an Alpine temperate glacier on Mt. Yulong, southeastern part of the Tibetan Plateau

• 来源期刊: 幕-国际地学杂志（英文版）
• 学科: 地球科学
• 年，卷（期）: 2001,（1）
• 页码范围: 13-18
• 页数: 6页
• 分类号: P5
• 语种: 英文

摘要

Mt. Yulong is the southernmost glacier-covered area in Eurasia, including China. There are 19 sub-tropical temperate glaciers on the mountain, controlled by the southwestern monsoon climate. In the summer of 1999,a firn core, 10.10 m long, extending down to glacier ice,was recovered in the accumulation area of the largest glacier, Baishui No. 1. Periodic variations of climatic signals above 7.8 m depth were apparent, and net accumulation off our years was identified by the annual oscillations of isotopic and ionic composition. The boundaries of annual accumulation were confirmed by higher values of electrical conductivity and pH, and by dirty refreezing ice layers at the levels of summer surfaces.