Abstract:

The progress in accelerator mass spectrometry made it possible to investigate astronomy, geography and paleoclimate by high precision measurements of cosmogenic 10 Be from various archives. Preceding investigations suggested that the 10 Be concentration could be used to indicate variation in the past precipitation, and its production rate in the atmosphere represented three control factors: primary cosmic ray intensity, solar activity and geomagnetic variations. Moreover,with the help of other cosmogenic nuclides, 10 Be can be used to date old ice layer and provide special information for global comparison. The Qinghai-Xizang plateau in the west china has ample resources of mountainous glacier due to its unique high elevation. For the mid-low- latitude location and peculiar atmospheric circulation pattern, it will be a necessary supplement to the now-existing polar 10 Be datum in providing more detail information of the geomagnetic shielding and climatic influence on the 10 Be.

Key words: null