昆仑山口西地震和汶川地震前中源地震活动特征研究
|
摘要
研究2001年昆仑山口西地震和2008年汶川地震前的中源地震活动特征,与唐山地震前的特征进行比较,发现:3次大地震前曾发生6或7次h≥60 km的中源地震,且"大震前中源地震活跃的时间跨度T"约5年或5年多。这是大震前中源地震活动最主要的两个特征,包含了孕育大地震的一些重要信息。其他特征还有:中源地震的活动—平静交替、临近大地震前的地震平静、呈条带分布和(或)地震空区等特征,这与大震前壳内地震活动性的一些特征类似。
The characteristics of the medium-depth events seismicity before the Kunlun Mountain earthquake in 2001 and the Wenchuan earthquake in 2008 are not only studied in this paper, but also compared with those before the Tangshan earthquake.It is concluded that:there were 6 to 7 medium-depth events with h≥60 km before the 3 main quakes.Moreover,the "time span T of the active medium-depth earthquakes before the large earthquake" is about or more than 5 years.These two characteristics are the principal,which include some important information to generate large quakes.Other characteristics are as follows;an active-quiet alternating phenomenon of medium-depth events exists;there is a pre-seismic quiet stage of the large earthquake;the medium-depth events present a belt-like distribution and/or form a seismic gap.All of these are similar to those of the crustal seismicity before a large quake.
The characteristics of the medium-depth events seismicity before the Kunlun Mountain earthquake in 2001 and the Wenchuan earthquake in 2008 are not only studied in this paper, but also compared with those before the Tangshan earthquake.It is concluded that:there were 6 to 7 medium-depth events with h≥60 km before the 3 main quakes.Moreover,the "time span T of the active medium-depth earthquakes before the large earthquake" is about or more than 5 years.These two characteristics are the principal,which include some important information to generate large quakes.Other characteristics are as follows;an active-quiet alternating phenomenon of medium-depth events exists;there is a pre-seismic quiet stage of the large earthquake;the medium-depth events present a belt-like distribution and/or form a seismic gap.All of these are similar to those of the crustal seismicity before a large quake.
引文
国家地震局科技监测司.实用化研究论文集:中国地震预报方法研究[M].北京:地震出版社,1991:478．
国家地震局.“中国地震烈度区划工作报告”附图·中国地壳视厚度图[M].北京:地震出版社,1978．
吴忠良,蒋长胜.统计预测、经验预测、物理预测[M].中国地震,2007,23(3) :211-224．
肖承邺,邹其嘉.世界奇异震害[M].北京:海洋出版社,1992:244．
许绍燮,陆远忠,朱传镇,刘正荣,韩渭宾,刘蒲雄,修济刚,等.地震预报方法实用化研究文集//地震学专辑[M].北京:学术书刊出版社,1989:590．
张国民.关于加强地震预报基础研究的思考[J].国际地震动态,2003,11:1-4．
张培震.中国地震灾害与防震减灾[J].地震地质,2008,30(3) :577-583．
张晓东,蒋海昆,黎明晓.地震预测与预警探讨[J].中国地震,2008,24(1) :67-76．
中国地震台网中心.中国地震台网目录(2008年5月)[R].2008．
中国地震台网中心.中国地震台网目录(2001年11月)[R].2001．
中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.中华人民共和国国家标准,防震减灾术语第2部分:专业术语[S].北京:中国标准出版社,2005:40．
邹立晔,王兴梅.1976年唐山地震前的中源地震活动性研究[J].地震地磁观测与研究,2009,30(1) :24-29．
Incorporated Research Institutions for Seismology (IRIS). 2006-2008． http://www. iris. edu/International Seismological Centre (ISC), 1964 2006． Bulletin of the ISC (January 1964-Aug 2006) .
国家地震局.“中国地震烈度区划工作报告”附图·中国地壳视厚度图[M].北京:地震出版社,1978．
吴忠良,蒋长胜.统计预测、经验预测、物理预测[M].中国地震,2007,23(3) :211-224．
肖承邺,邹其嘉.世界奇异震害[M].北京:海洋出版社,1992:244．
许绍燮,陆远忠,朱传镇,刘正荣,韩渭宾,刘蒲雄,修济刚,等.地震预报方法实用化研究文集//地震学专辑[M].北京:学术书刊出版社,1989:590．
张国民.关于加强地震预报基础研究的思考[J].国际地震动态,2003,11:1-4．
张培震.中国地震灾害与防震减灾[J].地震地质,2008,30(3) :577-583．
张晓东,蒋海昆,黎明晓.地震预测与预警探讨[J].中国地震,2008,24(1) :67-76．
中国地震台网中心.中国地震台网目录(2008年5月)[R].2008．
中国地震台网中心.中国地震台网目录(2001年11月)[R].2001．
中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.中华人民共和国国家标准,防震减灾术语第2部分:专业术语[S].北京:中国标准出版社,2005:40．
邹立晔,王兴梅.1976年唐山地震前的中源地震活动性研究[J].地震地磁观测与研究,2009,30(1) :24-29．
Incorporated Research Institutions for Seismology (IRIS). 2006-2008． http://www. iris. edu/International Seismological Centre (ISC), 1964 2006． Bulletin of the ISC (January 1964-Aug 2006) .
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心