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鲜水河断裂带的重力场变化特征

孙少安 贾民育 项爱民

地壳形变与地震2001,Vol.21Issue(1):72-78,7.
地壳形变与地震2001,Vol.21Issue(1):72-78,7.

鲜水河断裂带的重力场变化特征

THE CHANGE CHARACTERS OF GRAVITY FIELD IN THE XIANSHUI RIVER FRACTURE ZONE

孙少安 1贾民育 1项爱民1

作者信息

  • 1. 中国地震局地震研究所,
  • 折叠

摘要

Abstract

On the basis of fine processing to the observation data for more than 10 years obtained from the local gravity network in the Xianshui river fracture zone,this paper draws the spatial distribution figures of gravity field that can show the anomalous change characters.The analysis to these figures shows that the Xianshui river fracture zone and Longmen mountain fracture zone obviously control the temporal change of gravity in the network area and there are large differences between local gravity changes.The changes in the southeast are greater than those in the northwest and, especially,the Kangding area is a dangerous place where crustal stress can easily accumulate.The analysis also shows that the gravity field has obvious anomaly changes before Batang,Xiaojin and lijiang earthquakes.

关键词

鲜水河断裂/重力场变化/地震活动

分类

天文与地球科学

引用本文复制引用

孙少安,贾民育,项爱民..鲜水河断裂带的重力场变化特征[J].地壳形变与地震,2001,21(1):72-78,7.

基金项目

地震科学联合基金资助课题 ()

地壳形变与地震

OACSCD

1671-5942

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