古风向重建指征研究进展  

Advances in the Indicator of Palaeowind Direction Reconstruction

作　　者：刘立安[1] 姜在兴[2] 

机构地区：[1]东北大学秦皇岛分校环境科学与工程系,秦皇岛066004 [2]中国地质大学(北京)能源学院,北京100083

出　　处：《地理科学进展》2011年第9期1099-1106,共8页Progress in Geography

基　　金：国家科技重大专项项目(2009ZX05009-002);教育部"长江学者与创新团队发展计划"项目(IRT0864)

摘　　要：古风向的重建是古大气环流研究的重要内容,具有重要的古气候意义。目前对古风向的恢复所使用的地质指征包括风成地貌的形态、风成沉积物空间分布特征、风力作用产生的结果等,通过对这些指征识别和判断来重建古风向。本文对现有的古风向研究中的指征进行了总结归纳,可以将其分为直接指征、间接指征和其他类型指征。从时间尺度上看,第四纪以来的指征较多,方法多样,第四纪以前的地质指征数量相对较少,但研究应用仍很广泛;从空间尺度上看,干旱气候区的指征较易于获得,而湿润气候区指征匮乏,且适用较为严格。探寻新的古风向重建指征是古风向研究亟待解决的中心问题。The reconstruction of palaeowind direction has been a major concern in the study of palaeo-atmo- spheric circulation. The present geological indicators for the reconstruction of palaeowind direction include aeolian landform, spatial distribution of aeolian sediments and results of wind force. This paper summarizes the present geological indicators in the study of palaeowind direction, including direct indicators, indirect indicators and other indicators. Time perspective shows that for the period after the Quaternary, there have been more indi- cators and diverse reconstruction methods while for the period before the Quaternary, less indicators have been observed but widely applied. Space perspective indicates that the indicators can be easily obtained in arid climatic zones, while the indicators in humid climatic zones are relatively rare and the scope of application is limited. Searching for more indicators is a burning issue in the study of reconstructing palaeowind direction.

关 键 词：古风向 古气候 重建指征 

分 类 号：P532[天文地球—古生物学与地层学]