极地研究

极地研究 ›› 1993, Vol. 5 ›› Issue (3): 40-47.

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西南极菲尔德斯半岛长城站地区深部电性结构

孔祥儒;张建军;焦承民   

  • 出版日期:1993-09-30 发布日期:1993-09-30

DEEP ELECTRICAL CONDUCTIVITY STRUCTURE IN THE REGION OF GREAT WALL STATION,FILDES PENINSULA, WEST ANTARCTICA

  • Online:1993-09-30 Published:1993-09-30

PDF (PC)

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摘要：

本文分析了1992年12月长城站附近三个测点的大地电磁测深资料(1s到4096s的低频信号数据),得出菲尔德斯半岛风谷断裂电性主轴为北东110°,半岛地壳厚度为22.3km,壳内含四个主要电性层,厚度分别为:1.3km,6.7km,1.2km和13.3km,其中上地壳为9.2km,下地壳为13.1km。

关键词: 菲尔德斯半岛;电磁测深;电性结构

Abstract:

In the middle of December, 1992 , we have made three MTS measurement sites in the region of Great Wall Station,Fildes Peninsula,West Antarctica. Throughout the survey,we uesd the Magnetotelluric Measurement Station MMS 02 system. This paper deals with the results of the MT observations and pointed out that the electrical conductivity major axis of Wind Valley Fault is around 110°NE and the thickness of the crust in the Fildes Peninsula is about 22. 3km. The crust includes four main electrical condutivity layers and the thickness is 1. 3km, 6. 7km, 1. 2km,and 13. 1km respectively. The upper crust is 9. 2km and lower crust is 13. 1km.