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祁连—海原地震带中强地震序列类型分布及其应用

杨立明 王振亚 程建武 殷志钢

西北地震学报2001,Vol.23Issue(2):137-141,5.
西北地震学报2001,Vol.23Issue(2):137-141,5.

祁连—海原地震带中强地震序列类型分布及其应用

THE DISTRIBUTION OF TYPES OF MID-STRONG EARTHQUAKE SEQUENCES IN QILIAN—HAIYUAN SEISMIC ZONE AND THEIR APPLICATION

杨立明 1王振亚 1程建武 1殷志钢1

作者信息

  • 1. 中国地震局兰州地震研究所,
  • 折叠

摘要

Abstract

The types of sequences and features of foreshock and aftershock activities of 18 MS≥5.0 earthquakes since 1970 along Qilian—Haiyuan seismic zone are studied.The space distribution of types of the sequences along the zone is analyzed.The results show that 44 percent of events are mainshock type,and 55 percent of events are isolated type.The sequences in Xiji—Haiyuan—Guyuan segment of the zone are isolated type,that in the middle-eastern segment of the zone are mainshock type,that in the middle segment of the zone are isolated type and mainshock type both, and that in the western segment of the zone are isolated type.The result of the seismicity trend judging after the Jingtai MS5.9 earthquake on June 6,2000 by using study results of this paper consists with real facts.

关键词

祁连—海原地震带/地震序列类型/空间分布/震后趋势判定

分类

天文与地球科学

引用本文复制引用

杨立明,王振亚,程建武,殷志钢..祁连—海原地震带中强地震序列类型分布及其应用[J].西北地震学报,2001,23(2):137-141,5.

西北地震学报

OA北大核心CSCD

1000-0844

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