祁连山地震带地震活动特征及序列类型

详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文

英文篇名：Characteristics of Seismicity and Sequence Patterns in Qilianshan Seismic Belt 中文刊名：西北地震学报 英文刊名：Northwestern Seismological Journal 作者：刘小凤 ; 肖丽珠 ; 梅秀萍 ; 徐辉 英文作者：LIU Xiao-feng ; XIAO Li-zhu ; MEI Xiu-ping ; XU Huei (Lanzhou Institute of Seismology ; CEA ; Lanzhou 730000 ; China) 中文关键词：地震活动特征 ; 地震序列类型 ; 祁连山地震带 英文关键词：Seismicity character ; Earthquake sequence pattern ; Qilianshan seismic belt 出版日期：2005-03-30 机构：中国地震局兰州地震研究所,中国地震局兰州地震研究所,中国地震局兰州地震研究所,中国地震局兰州地震研究所 甘肃兰州730000 ,甘肃兰州730000 ,甘肃兰州730000 ,甘肃兰州730000 年：2005 期：01 出版单位：西北地震学报

摘要

祁连山地震带中强地震具有成组活动特征,震前地震活动图象表现为地震空区、前兆地震、区域地震活动增强等。地震空区以中期异常为主,中期向短期过渡的标志为空区边缘或内部出现前兆地震、空区停止围空1~3个月或空区内发生小地震而导致空区解体。前兆地震一般于震前1~6个月出现,多数前兆地震与主震之间距离小于30 km,震级差1.5~3.0。通过序列类型及参数的统计分析,为震后趋势判定提供了依据。
The moderate-strong earthquakes in Qilianshan seismic belt shows the character of becoming groups. The seismicity patterns before the main shock are seismic gaps,precursor earthquakes, and enhanced regional seismicity, et al.. The seismic gaps mostly are mid-term abnormity. The signs from mid-term to short-term are those precursor earthquakes occur at the edge of or in the gaps, the gaps cease for 1~3 months,or the gaps dissemble with the small earthquake occurrs in it. The precursor earthquakes generally occur 1~6 months before the main shock and the distances between the precursor earthquake and main shock are less than 30 km, with the ΔM=1.5~3.0. Furthemore, the earthquake sequence patterns, the b,h values of the aftershock sequences are statisticsed and analysed. All above reseach will serve in seismic trend prediction after strong earthquake.

引文

[1]　周翠英,张玉霞,王华林,等.地震序列类型的早期判断[A].见:国家地震局地震预防司.地震短期预报的理论理论与方法—“八五”攻关三级课题论文集[C].北京:地震出版社,1997.176-188.
    [2]　黄耘,郑江蓉.华东地区中强地震序列特征研究[J].地震,1999,19(2):190-198.
    [3]　杨立明,王振亚,程建武,等.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):137-142.
    [4]　陈玉华,马文静,张瑞斌.青海及邻区中强地震序列类型及特征研究[J].西北地震学报,2001,23(3),250-256。