中国大陆和南海卫星磁异常的初步解释  

A Preliminary Interpretation of Satellite Magnetic Anomalies over China′s Mainland and South China Sea

作　　者：张昌达[1] 

机构地区：[1]中国地质大学地球物理与空间信息学院,武汉430074

出　　处：《地质科技情报》2005年第3期99-103,共5页Geological Science and Technology Information

摘　　要：中国境内存在6个明显的卫星磁异常,其中4个分布在大陆,2个分布在南海.塔里木、四川、松辽和南海曾母盆地地区磁性层的下界面在莫霍面之下,上地幔顶部约10 km厚的一层呈强磁性,磁化强度约为2 A/m;西藏高原地壳呈弱磁性,磁性层厚度小于30 km,磁化强度约为0.66 A/m,而该区莫霍面深度约为60～70 km.因此,Wasilewski等提出的'莫霍面是一个磁性界面'的论断,不能普遍成立.There are six obvious satellite magnetic anomalies over Chinds territory, four located in mainland, and another two in South China Sea. In areas of Tarim, Sichuan, Songliao and Zengmu basins（in South China Sea）, the lower boundaries of magnetic layer are beneath the Moho, the uppermost parts of mantle,about 10 km thick,are strongly magnetic, with magnetization about 2 A/m. The crust underlying the Xizang（Tibet） plateau is weakly magnetic, the magnetic layer is less than 30 km thick, with magnetization of 0.66 A/m, while the Moho depth is about 60-70 km. Therefore, the argument“The Moho as a magnetic boundary”, proposed by Wasilewski P. J, et al. is untenable.

关 键 词：卫星磁异常 中国 南(中国)海 塔里木 西藏 

分 类 号：P318.62[天文地球—固体地球物理学]