南北地震带中段及周边中强地震序列类型的特征

doi:10.3969/j.issn.0253-4967.2021.01.011

地震地质 ›› 2021, Vol. 43 ›› Issue (1): 177-196.DOI: 10.3969/j.issn.0253-4967.2021.01.011

南北地震带中段及周边中强地震序列类型的特征

祁玉萍¹⁾, 龙锋^1),*, 林圣杰¹⁾, 肖本夫¹⁾, 赵小艳²⁾, 王培玲³⁾, 冯建刚⁴⁾

1)四川省地震局, 成都 610041;
2)云南省地震局, 昆明 650224;
3)青海省地震局, 西宁 810001;
4)甘肃省地震局, 兰州 730000

收稿日期:2020-03-18 修回日期:2020-11-20 出版日期:2021-02-20 发布日期:2021-05-06
通讯作者: *龙锋, 男, 1981年生, 硕士, 高级工程师, 主要从事地震定位和统计地震学研究, E-mail:longfeng1981@gmail.com。
作者简介:祁玉萍, 女, 1989年生, 2013年于中国地震局地震预测研究所获构造地质学专业硕士学位, 工程师, 主要从事数字地震学方法应用、地震预报研究, 电话: 028-85450172, E-mail:vickey112@163.com。
基金资助:
中国地震局地震科技星火计划项目(XH21026Y); 国家重点研发计划项目(2018YFC150330501); 中央引导地方科技发展专项(2020ZYD026); 中国地震局监测预报司震情跟踪青年课题(2019010107)共同资助

A STUDY ON THE EARTHQUAKE SEQUENCE TYPE IN THE MIDDLE SECTION OF THE NORTH-SOUTH SEISMIC BELT AND ITS SURROUNDING REGIONS

QI Yu-ping¹⁾, LONG Feng¹⁾, LIN Sheng-jie¹⁾, XIAO Ben-fu¹⁾, ZHAO Xiao-yan²⁾, WANG Pei-ling³⁾, FENG Jian-gang⁴⁾

1)Sichuan Earthquake Agency, Chengdu 610041, China;
2)Yunnan Earthquake Agency, Kunming 650224, China;
3)Qinghai Earthquake Agency, Xining 810001, China;
4)Gansu Earthquake Agency, Lanzhou 730000, China

Received:2020-03-18 Revised:2020-11-20 Online:2021-02-20 Published:2021-05-06

摘要/Abstract

摘要： 文中根据南北地震带中段及附近区域1973年以来86次5.0级以上的地震序列统计结果, 对地震序列类型和空间分布进行分析, 结果表明: 1)研究区域内的地震序列以主余型为主(51%), 多震型次之(29%), 孤立型最少(20%); 同一序列类型中, 随着地震震级增大, 主余型地震所占的比例增加, 多震型、孤立型逐渐减少, 7.0级以上地震以主余型为主, 无孤立型地震; 对于不同破裂类型, 逆冲型地震中主余型最多, 多震型地震更可能为走滑和正断性质的地震。 2)主余型和多震型地震序列的主震与最大余震震级的线性关系相对较好; 绝大多数地震的最大余震多发生在震后20d内, 主余型最大余震集中在震后3d内发生, 多震型地震中次大地震集中在震后12d内发生, 孤立型地震的最大余震多发生在地震当天。 3)地震序列空间分布显示, 主余型地震分布相对较广, 多震型地震主要集中在川西巴塘—理塘、川东马边—昭通一带、川北松潘和滇西北云龙、姚安、龙陵及附近区域, 甘孜-玉树断裂带、鲜水河断裂带NW段及四川盆地等地更易发生孤立型地震。 4)地震序列类型的空间分布可能与本区域的地质构造和历史地震活动存在一定的关系。

关键词: 南北地震带中段, 地震序列类型, 最大余震震级, 序列空间分布特征

Abstract: Based on the statistical results of 86 earthquakes with magnitude≥5.0 in the middle section of the north-south seismic belt and its surrounding regions since 1973, the types of earthquake sequences and the spatial distribution characteristics have been studied. Main conclusions are drawn as follows: 1)The sequence types of moderate and strong earthquakes in the study area are dominated by mainshock-aftershock sequence type(MAT), followed by multiple main-shock type(MMT)and least the isolated earthquake type(IET)sequence. In the same sequence type, with the increase of earthquake magnitude, the proportion of the MAT sequence increased, while the number of MMT and IET gradually decreased, M≥7 earthquakes are mainly of MAT, and there are no IET earthquakes. Among the different rupture types, the MAT earthquakes are the most in the thrust-type, while the MMT earthquakes are more likely to occur in the strike-slip and the normal-fault earthquakes. 2)There is a relatively good linear relationship between the mainshock-aftershock sequence type earthquakes and the maximum aftershock magnitude of the MAT and MMT sequences; the largest aftershock of most earthquakes mostly occurred in 15 days after the mainshock, the largest aftershock of MAT mainly occurred within 3 days after the mainshock, the largest aftershock of MMT earthquakes mainly occurred within 12 days after the mainshock, and the largest aftershock of IET earthquakes mostly occurred on the day of the earthquake. 3)The spatial distribution of seismic sequence shows that the MAT earthquake distribution range is relatively wide, the MMT earthquakes are mainly concentrated in Batang-Litang, Mabian-Zhaotong, Songpan area in Sichuan Province and Yunlong, Yao 'an, Longling and nearby areas in northwest Yunnan Province. IET earthquakes are more likely to occur in Ganzi-Yushu fault zone, the northwestern segment of Xianshuihe fault zone and in Sichuan Basin. 4)The distribution of seismic sequence types in the middle section of the north-south seismic belt and its adjacent areas may be related to the geological structure, historical seismic activity and the crustal stress in this region. The distribution of seismic sequence types also reflects the tectonic movement and dynamic environment in this region.

Key words: the middle section of the north-south seismic belt, sequence type, magnitude of maximum aftershock, spatial distribution of seismic sequence

中图分类号:

P315.3+3

祁玉萍, 龙锋, 林圣杰, 肖本夫, 赵小艳, 王培玲, 冯建刚. 南北地震带中段及周边中强地震序列类型的特征[J]. 地震地质, 2021, 43(1): 177-196.

QI Yu-ping, LONG Feng, LIN Sheng-jie, XIAO Ben-fu, ZHAO Xiao-yan, WANG Pei-ling, FENG Jian-gang. A STUDY ON THE EARTHQUAKE SEQUENCE TYPE IN THE MIDDLE SECTION OF THE NORTH-SOUTH SEISMIC BELT AND ITS SURROUNDING REGIONS[J]. SEISMOLOGY AND GEOLOGY, 2021, 43(1): 177-196.

参考文献

[1] 常祖峰, 周荣军, 安晓文, 等. 2014. 昭通-鲁甸断裂晚第四纪活动及其构造意义[J]. 地震地质, 36(4): 1260—1279. doi: 10.3969/j.issn.0253-4967.2014.04.025.
CHANG Zu-feng, ZHOU Rong-jun, AN Xiao-wen, et al. 2014. Late-Quaternary activity of the Zhaotong-Ludian fault zone and its tectonic implication[J]. Seismology and Geology, 36(4): 1260—1279(in Chinese).
[2] 陈棋福. 2002a. 中国震例(1992—1994)[M]. 北京: 地震出版社.
CHEN Qi-fu. 2002a. Earthquake Cases in China(1992—1994)[M]. Seismological Press, Beijing(in Chinese).
[3] 陈棋福. 2002b. 中国震例(1995—1996)[M]. 北京: 地震出版社.
CHEN Qi-fu. 2002b. Earthquake Cases in China(1995—1996)[M]. Seismological Press, Beijing(in Chinese).
[4] 陈棋福. 2002c. 中国震例(1997—1999)[M]. 北京: 地震出版社.
CHEN Qi-fu. 2002c. Earthquake Cases in China(1997—1999)[M]. Seismological Press, Beijing(in Chinese).
[5] 陈棋福. 2008. 中国震例(2000—2002)[M]. 北京: 地震出版社.
CHEN Qi-fu. 2008. Earthquake Cases in China(2000—2002)[M]. Seismological Press, Beijing(in Chinese).
[6] 邓起东, 张培震, 冉勇康, 等. 2002. 中国活动构造基本特征[J]. 中国科学(D辑), 32(12): 1020—1030, 1057.
DENG Qi-dong, ZHANG Pei-zhen, RAN Yong-kang, et al. 2002. Basic characteristics of active faults in China[J]. Science in China(Ser D), 32(12): 1020—1030, 1057(in Chinese).
[7] 杜方, 蒋海昆, 杨马陵, 等. 2018. 中国震例: 2008年5月12日四川汶川8.0级地震 [M]. 北京: 地震出版社.
DU Fang, JIANG Hai-kun, YANG Ma-ling, et al. 2018. MS8.0 Wenchuan earthquake in Sichuan on May 12, 2008 [M]. Seismological Press, Beijing(in Chinese).
[8] 宫悦, 龙锋, 梁明剑, 等. 2019. 2015年四川乐山金口河M5.0地震孕震构造条件分析[J]. 中国地震, 35(3): 445—454.
GONG Yue, LONG Feng, LIANG Ming-jian, et al. 2019. Seismogenic structure of the Jinkouhe M5.0 earthquake in 2015[J]. Earthquake Research in China, 35(3): 445—454(in Chinese).
[9] 虢顺民, 徐锡伟, 向宏发, 等. 2002. 龙陵-澜沧新生断裂带地震破裂分段与地震预测研究[J]. 地震地质, 24(2): 133—144.
GUO Shun-min, XU Xi-wei, XIANG Hong-fa, et al. 2002. Segmentation of earthquake rupture and earthquake prediction along the Longling-Lancang fault zone in the southwestern Yunnan Province[J]. Seismology and Geology, 24(2): 133—144(in Chinese).
[10] 何登发, 李德生, 张国伟, 等. 2011. 四川多旋回叠合盆地的形成与演化[J]. 地质科学, 46(3): 589—606.
HE Deng-fa, LI De-sheng, ZHANG Guo-wei, et al. 2011. Formation and devolution of multi cycle superposed Sichuan Basin, China[J]. Chinese Journal of Geology, 46(3): 589—606(in Chinese).
[11] 皇甫岗, 秦嘉政, 李忠华, 等. 2007. 云南地震类型分区特征研究[J]. 地震学报, 29(2): 142—150.
HUANGFU Gang, QIN Jia-zheng, LI Zhong-hua, et al. 2007. Subarea characteristics of earthquake types in Yunnan[J]. Acta Seismologica Sinica, 29(2): 142—150(in Chinese).
[12] 蒋海昆, 代磊, 侯海峰, 等. 2006a. 余震序列性质判定单参数判据的统计研究[J]. 地震, 26(3): 17—25.
JIANG Hai-kun, DAI Lei, HOU Hai-feng, et al. 2006a. Statistic study on the criterion index for classification of aftershock sequences[J]. Earthquake, 26(3): 17—25(in Chinese).
[13] 蒋海昆, 李永莉, 曲延军, 等. 2006b. 中国大陆中强地震序列类型的空间分布特征[J]. 地震学报, 28(4): 389—398.
JIANG Hai-kun, LI Yong-li, QU Yan-jun, et al. 2006b. Spatial distribution features of sequence types of moderate and strong earthquakes in Chinese mainland[J]. Acta Seismologica Sinica, 28(4): 389—398(in Chinese).
[14] 蒋海昆, 曲延军, 李永莉, 等. 2006c. 中国大陆中强地震余震序列的部分统计特征[J]. 地球物理学报, 49(4): 1110—1117.
JIANG Hai-kun, QU Yan-jun, LI Yong-li, et al. 2006c. Some statistic of aftershock sequences in Chinese mainland[J]. Chinese Journal of Geophysics, 49(4): 1110—1117(in Chinese).
[15] 蒋海昆, 郑建常, 代磊, 等. 2007. 中国大陆余震序列类型的综合判定[J]. 地震, 27(1): 17—25.
JIANG Hai-kun, ZHENG Jian-chang, DAI Lei, et al. 2007. Synthetical judgment of types of aftershock sequences in China’s mainland[J]. Earthquake, 27(1): 17—25(in Chinese).
[16] 蒋海昆. 2014a. 中国震例(2003—2006)[M]. 北京: 地震出版社.
JIANG Hai-kun. 2014a. Earthquake Cases in China(2003—2006)[M]. Seismological Press, Beijing(in Chinese).
[17] 蒋海昆. 2014b. 中国震例(2007—2010)[M]. 北京: 地震出版社.
JIANG Hai-kun. 2014b. Earthquake Cases in China(2007—2010)[M]. Seismological Press, Beijing(in Chinese).
[18] 蒋海昆. 2014c. 中国震例(2011—2012)[M]. 北京: 地震出版社.
JIANG Hai-kun. 2014c. Earthquake Cases in China(2011—2012)[M]. Seismological Press, Beijing(in Chinese).
[19] 焦远碧. 1998. 地震序列类型、地震序列b值与地震大形势关系初探[J]. 地震, 18(1): 33—40.
JIAO Yuan-bi.1998. Study on types of earthquake sequences and relation between b-value of earthquake sequences and long-term tendency of strong earthquakes[J]. Earthquake, 18(1): 33—40(in Chinese).
[20] 李永莉, 赵小艳, 秦嘉政. 2011. 云南中强震序列类型的划分及其空间分布特征[J]. 地震研究, 34(3): 255—261.
LI Yong-li, ZHAO Xiao-yan, QIN Jia-zheng.2011. Classification of medium-strong earthquake sequence and its spatial distribution characteristics in Yunnan[J]. Journal of Seismological Research, 34(3): 255—261(in Chinese).
[21] 林松建, 赵志伟. 2011. 福建及邻区地震序列类型分布特征分析[J]. 地震研究, 34(4): 447—452.
LIN Song-jian, ZHAO Zhi-wei.2011. Geographic distribution feature of the earthquake sequence type in Fujian Province and its vicinity[J]. Journal of Seismological Research, 34(4): 447—452(in Chinese).
[22] 刘蒲雄, 陈修启, 吕晓健, 等. 1996. 地震序列的后续显著地震的预测研究[J]. 地震学报, 18(1): 27—33.
LIU Pu-xiong, CHEN Xiu-qi, LÜ Xiao-jian, et al. 1996. Prediction of significant subsequent earthquakes in earthquake sequences[J]. Acta Seismologica Sinica, 18(1): 27—33(in Chinese).
[23] M7专项工作组. 2012. 中国大陆大地震中—长期危险性研究 [M]. 北京: 地震出版社.
Working Group of M7. 2012. Study on the Mid- to Long-Term Potential of Large Earthquakes on the Chinese Continent [M]. Seismological Press, Beijing(in Chinese).
[24] 祁玉萍, 张致伟, 龙锋, 等. 2018. 大凉山次级块体及邻区震源机制解与区域应力场特征分析[J]. 地震地质, 40(2): 377—395. doi: 10.3969/j.issn.0253-4967.2018.02.007.
QI Yu-ping, ZHANG Zhi-wei, LONG Feng, et al. 2018. Earthquake focal mechanisms in the Daliangshan sub-block and adjacent areas and characteristics of the regional stress field[J]. Seismology and Geology, 40(2): 377—395(in Chinese).
[25] 钱洪. 1989. 鲜水河断裂带的断错地貌及其地震学意义[J]. 地震地质, 11(4): 43—49.
QIAN Hong.1989. Faulted landforms along the Xianshuihe fault zone and their seismological significance[J]. Seismology and Geology, 11(4): 43—49(in Chinese).
[26] 沈小七, 王俊. 2014. 安徽及邻近地区地震类型分区特征研究[J]. 地震, 34(2): 98—104.
SHEN Xiao-qi, WANG Jun.2014. A study on regional division of earthquake types in Anhui Province and surrounding areas[J]. Earthquakes, 34(2): 98—104(in Chinese).
[27] 宋美琴, 李斌, 吕芳, 等. 2011. 山西及周边地区地震类型分区特征[J]. 地震学报, 33(5): 691—696.
SONG Mei-qin, LI Bin, LÜ Fang, et al. 2011. A study on sub-region division of earthquake types in Shanxi and its surrounding regions[J]. Acta Seismologica Sinica, 33(5): 691—696(in Chinese).
[28] 唐荣昌, 韩渭宾(编). 1993. 四川活动断裂与地震 [M]. 北京: 地震出版社.
TANG Rong-chang, HAN Wei-bin(ed). 1993. Active Faults and Earthquakes in Sichuan Province [M]. Seismological Press, Beijing(in Chinese).
[29] 王华林, 周翠英, 耿杰. 1997. 中国大陆及邻区地震序列类型的分区特征和震源环境讨论[J]. 地震, 17(1): 34—42.
WANG Hua-lin, ZHOU Cui-ying, GENG Jie.1997. Discussion on zoning features of earthquake sequence type and source environment in Chinese mainland and its adjacent area[J]. Earthquake, 17(1): 34—42(in Chinese).
[30] 闻学泽, 范军, 易桂喜, 等. 2013. 川滇交界东段昭通、莲峰断裂带的地震危险背景[J]. 地球物理学报, 56(10): 3361—3372. doi: 10.6038/cjg20131012.
WEN Xue-ze, FAN Jun, YI Gui-xi, et al. 2013. Earthquake potential of the Zhaotong and Lianfeng fault zones of the Sichuan-Yunnan border region[J]. Chinese Journal of Geophysics, 56(10): 3361—3372(in Chinese).
[31] 闻学泽, 易桂喜. 2003. 川滇地区地震活动统计单元的新划分[J]. 地震研究, 26(S1): 1—9.
WEN Xue-ze, YI Gui-xi.2003. Re-zoning of statistic units of seismicity in Sichuan-Yunnan region[J]. Journal of Seismological Research, 26(S1): 1—9(in Chinese).
[32] 闻学泽, 杜方, 易桂喜, 等. 2008. 川西安宁河断裂上的地震空区[J]. 中国科学(D辑), 37(7): 798—807.
WEN Xue-ze, DU Fang, YI Gui-xi, et al. 2008. Seismic gap of Anninghe Fault in western Sichuan[J]. Science in China(Ser D), 37(7): 798—807.
[33] 吴开统, 焦远碧, 吕培苓, 等. 1990. 地震序列概论 [M]. 北京: 北京大学出版社.
WU Kai-tong, JIAO Yuan-bi, LÜ Pei-ling, et al. 1990. Introduction to Earthquake Sequences [M]. Peking University Press, Beijing(in Chinese).
[34] 谢富仁, 刘光勋, 梁海庆. 1994. 滇西北及邻区现代构造应力场[J]. 地震地质, 16(4): 329—338.
XIE Fu-ren, LIU Guang-xun, LIANG Hai-qing.1994. Recent tectonic stress field in northwest Yunnan Province and its adjacent areas[J]. Seismology and Geology, 16(4): 329—338(in Chinese).
[35] 徐晶, 邵志刚, 马宏生, 等. 2013. 鲜水河断裂带库仑应力演化与强震间关系[J]. 地球物理学报, 56(4): 1146—1158.
XU Jing, SHAO Zhi-gang, MA Hong-sheng, et al. 2013. Evolution of Coulomb stress and stress interaction among strong earthquakes along the Xianshuihe fault zone[J]. Chinese Journal of Geophysics, 56(4): 1146—1158(in Chinese).
[36] 徐晶, 邵志刚, 刘静, 等. 2019. 川滇菱形块体东边界库仑应力演化及强震发生概率估算[J]. 地球物理学报, 62(11): 4189—4213.
XU Jing, SHAO Zhi-gang, LIU Jing, et al. 2019. Coulomb stress evolution and future earthquake probability along the eastern boundary of the Sichuan-Yunnan block[J]. Chinese Journal of Geophysics, 62(11): 4189—4213(in Chinese).
[37] 徐锡伟, 闻学泽, 郑荣章, 等. 2003. 川滇地区活动块体最新构造变动样式及其动力来源[J]. 中国科学(D辑), 33(S1): 151—162.
XU Xi-wei, WEN Xue-ze, ZHENG Rong-zhang, et al. 2003. Pattern of latest tectonic motion and its dynamics for active blocks in Sichuan-Yunnan region, China[J]. Science in China(Ser D), 33(S1): 151—162(in Chinese).
[38] 徐锡伟, 吴熙彦, 于贵华, 等. 2017. 中国大陆高震级地震危险区判定的地震地质学标志及其应用[J]. 地震地质, 39(2): 219—275. doi: 10.3969/j.issn.0253-4967.2017.02.001.
XU Xi-wei, WU Xi-yan, YU Gui-hua, et al. 2017. Seismo-geological signatures for identifying M≥7.0 earthquake risk areas and their preliminary application in mainland China[J]. Seismology and Geology, 39(2): 219—275(in Chinese).
[39] 易桂喜, 龙锋, 梁明剑, 等. 2017. 2016年9月23日四川理塘M4.9和M5.1地震发震构造分析[J]. 地震地质, 39(5): 949—963. doi: 10.3969/j.issn.0253-4967.2017.05.006.
YI Gui-xi, LONG Feng, LIANG Ming-jian, et al. 2017. Seismogenic structure of the M4.9 and M5.1 Litang earthquakes on 23 September 2016 in southwestern China[J]. Seismology and Geology, 39(5): 949—963(in Chinese).
[40] 张世民, 聂高众, 刘旭东, 等. 2005. 荥经-马边-盐津逆冲构造带断裂运动组合及地震分段特征[J]. 地震地质, 27(2): 221—233.
ZHANG Shi-ming, NIE Gao-zhong, LIU Xu-dong, et al. 2005. Kinematical and structural patterns of Yingjing-Mabian-Yanjin thrust fault zone, southeast of Tibetan plateau, and its segmentation from earthquakes[J]. Seismology and Geology, 27(2): 221—233(in Chinese).
[41] 张肇诚. 1988. 中国震例(1966—1975)[M]. 北京: 地震出版社.
ZHANG Zhao-cheng. 1988. Earthquake Cases in China(1966—1975)[M]. Seismological Press, Beijing(in Chinese).
[42] 张肇诚. 1990a. 中国震例(1976—1980)[M]. 北京: 地震出版社.
ZHANG Zhao-cheng. 1990a. Earthquake Cases in China(1976—1980)[M]. Seismological Press, Beijing(in Chinese).
[43] 张肇诚. 1990b. 中国震例(1981—1985)[M]. 北京: 地震出版社.
ZHANG Zhao-cheng. 1990b. Earthquake Cases in China(1981—1985)[M]. Seismological Press, Beijing(in Chinese).
[44] 张肇诚. 1999. 中国震例(1986—1988)[M]. 北京: 地震出版社.
ZHANG Zhao-cheng. 1999. Earthquake Cases in China(1986—1988)[M]. Seismological Press, Beijing(in Chinese).
[45] 张肇诚. 2000. 中国震例(1989—1991)[M]. 北京: 地震出版社.
ZHANG Zhao-cheng. 2000. Earthquake Cases in China(1989—1991)[M]. Seismological Press, Beijing(in Chinese).
[46] 周翠英, 侯海峰, 华爱军, 等. 2001. 山东及其近海区地震序列类型地理分布特征[J]. 华北地震科学, 19(3): 15—27.
ZHOU Cui-ying, HOU Hai-feng, HUA Ai-jun, et al. 2001. The geographic distribution feature of earthquake sequence type in Shandong and its offshore area[J]. North China Earthquake Science, 19(3): 15—27(in Chinese).
[47] 周荣军, 陈国星, 李勇, 等. 2005. 四川西部理塘—巴塘地区的活动断裂与1989年巴塘6.7级震群发震构造研究[J]. 地震地质, 27(1): 31—43.
ZHOU Rong-jun, CHEN Guo-xing, LI Yong, et al. 2005. Research on active faults in Litang-Batang region, western Sichuan Province, and the seismogenic structure of the 1989 Batang M6.7 earthquake swarm[J]. Seismology and Geology, 27(1): 31—43(in Chinese).
[48] Allen C R, Lou Z L, Qian H, et al. 1991. Field study of a highly active fault zone: The Xianshuihe Fault of southwestern China[J]. Geological Society of America Bulletin, 103(9): 1178—1199.
[49] Kisslinger C, Jones L M.1991. Properties of aftershocks in southern California[J]. Journal of Geophysical Research, 96:11947—11958.

南北地震带中段及周边中强地震序列类型的特征

A STUDY ON THE EARTHQUAKE SEQUENCE TYPE IN THE MIDDLE SECTION OF THE NORTH-SOUTH SEISMIC BELT AND ITS SURROUNDING REGIONS

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