摘要
以云南拱王山冰蚀湖(3579ma.s.l.)相沉积物为研究对象,对沉积物的磁化率进行实测研究,并与黄土、非冰川作用区的湖相沉积物相互校验,结果显示:冰蚀湖相沉积物的质量磁化率变化幅度大,老碳房剖面磁化率值介于 1.40～6.3333μm3·kg-1之间;频率磁化率普遍偏低,介于 0.011～0.2688 (μm3·kg-1)之间。对影响冰川作用区磁化率变化的因素进行了深入探讨,并阐述了运用磁化率变化反演环境变化的问题。
Magnetic susceptibility is one of the effective indexes to reconstruct the ancient environment. Comparing with the loess, lake deposits in non-glacial regions, the authors researched and measured the magnetic susceptibility of the glacial erosive lake deposits in Gongwang Mountain,Yunnan Province. The conclusions are that the change of the mass susceptibility is larger (1.40～6.333 3μm3kg-1) and the frequency magnetic susceptibility value is lower(0.011～0.268 8μm3kg-1) than most of the other kinds of deposits. Meanwhile , the factors that affect the change in magnetic susceptibility of the glacial regions are discussed and some problems about the reconstruction in environmental change using the magnetic susceptibility are also expounded
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2004年第6期740-743,共4页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(40071015)
关键词
冰蚀湖
磁化率
环境磁学
环境变化
冰川
magnetic susceptibility
gongwang mountain
glacial erosive lake
environmental change
glacier
