末次冰消期以来兰州地区冬季风变化研究

详细信息

收稿日期: 1999-05-04

修回日期: 1999-05-10

刊出日期: 1999-08-25

STUDY ON THE WINTER MONSOON VARIATIONS INLANZHOU AREA SINCE THE LAST DEGLACIATION

Received Date: 04 May 1999

Revised Date: 10 May 1999

Publish Date: 25 August 1999

摘要: 研究发现,本次冰消期以来兰州地区大气风力发生了显著变化,全新世早中期大气风力最弱,随后大气风力回返到接近冰期的状况,约1300aB．P．开始大气风力再次减弱,现代是大气风力又一次增强时期；近地面风向有由西北向东北变化的趋势,是大气环流位置变化的结果。在总的变化背景下,大气风力具有约1500a的准周期。我们认为,间冰期季风中国的短尺度气候变化与冰期有差异,前者与低纬度地区联系更密切。
- 末次冰消期 /
- 风力与风向变化 /
- 千年周期 /
- 间冰期季风变化机制
Abstract: Monsoon climate, one of the main climate types in the world, strongly influencesmany parts of the world. China is one of the most strongly effected countries bymonsoon climate. The winter monsoon connected with dust transportation anddeposition especially influences the environment of China. Winter monsoon is a vectorsystem. It consists of not only intensity but also direction.
- last deglacial /
- wind intensity and direction variations /
- millennialchanges /
- forcing factors during interglacial