基于z值检验和PI方法对门源2016年MS6.4和2022年MS6.9地震进行对比研究

doi:10.12196/j.issn.1000-3274.2025.03.002

Abstract

Abstract: In this paper, two earthquakes, Menyuan M_S6.4 in 2016 and Menyuan M_S6.9 in 2022, were taken as research objects to conduct a comparative study on the change of regional seismic activity characteristics based on the seismic activity rate (z-value) and Pattern Informatics (PI) method. The results show that: ① z-value spatial scanning images obtained with different parameter models reflect the common feature of “abnormal seismic quiescence” in a large area around the epicenters of both earthquakes in the 6 a period before the Menyuan earthquakes. ② At the 1.0°×1.0° grid scale, based on different time window lengths, there are PI hotspots in the epicenter and Moore's adjacent grid of the two earthquakes, which are strong indicative function of the epicenters. Compared with the Menyuan M_S6.9 earthquake, the hotspots associated with the 2016 Menyuan M_S6.4 earthquake is more effective. ③ The combination of the spatial distribution of z-values and PI hotspots as well as the regional fault can narrow the forecast range of epicenter location of strong earthquakes further. The above study is of reference significance for summary of strong earthquake activity characteristics and the analysis of seismic activity trend at the northeastern margin of the Qinghai-Tibet block.

Key words: The 2022 Menyuan M_S6.9 earthquake, The 2016 Menyuan M_S6.4 earthquake, PI method, z-value, Comparative research

CLC Number:

P315.7

SONG Cheng, ZHANG Yong-xian, BI Jin-meng, XU Ke, GAO Ye, ZHANG Ming-dong, XIA Cai-yun, TIAN Wei-xi, FENG Mao-ning. Comparative Research of the 2016 M_S6.4 and 2022 M_S6.9 Earthquakes in Menyuan Based on the z-Value and PI Method[J]. EARTHQUAKE, 2025, 45(3): 13-30.

References

[1] 支明, 孙丽, 杨志高, 等. 2022年1月8日青海门源6.9级地震的快速测定与数据产品产出[J]. 中国地震, 2022, 38(1): 30-41.
ZHI Ming, SUN Li, YANG Zhi-gao, et al. Fast determination and data production of the Menyuan 6.9 earthquake on Jan 08, 2022, Qinghai Province[J]. Earthquake Research in China, 2022, 38(1): 30-41 (in Chinese).
[2] 左可桢, 陈继锋, 蒲举, 等. 2016-01-21青海门源M_S6.4地震震前应力降变化特征研究[J]. 大地测量与地球动力学, 2018, 38(6): 629-633.
ZUO Ke-zhen, CHEN Ji-feng, PU Ju, et al. Study of the spatial and temporal distribution characteristics of stress drop before the January 21, 2016 M_S6.4 Menyuan earthquake[J]. Journal of Geodesy and Geodynamics, 2018, 38(6): 629-633 (in Chinese).
[3] 李智敏, 盖海龙, 李鑫, 等. 2022年青海门源M_S6.9级地震发震构造和地表破裂初步调查[J]. 地质学报, 2022, 96(1): 330-335.
LI Zhi-min, GAI Hai-long, LI Xin, et al. Seismogenic fault and coseismic surface deformation of the Menyuan M_S6.9 earthquake in Qinghai, China[J]. Acta Geologica Sinica, 2022, 96(1): 330-335 (in Chinese).
[4] 苑争一, 赵静, 牛安福. 2022年1月8日青海门源M_S6.9地震震前变形特征分析[J]. 中国地震, 2022, 38(3): 389-398.
YUAN Zheng-yi, ZHAO Jing, NIU An-fu. Analysis of deformation characteristics before the Menyuan M_S6.9 earthquake on January 8, 2022 in Qinghai Province[J]. Earthquake Research in China, 2022, 38(3): 389-398 (in Chinese).
[5] 赵凌强, 孙翔宇, 詹艳, 等. 2022年1月8日青海门源M_S6.9地震孕震环境和冷龙岭断裂分段延展特征[J]. 地球物理学报, 2022, 65(4): 1536-1546.
ZHAO Ling-qiang, SUN Xiang-yu, ZHAN Yan, et al. The seismogenic model of the Menyuan M_S6.9 earthquake on January 8, 2022, Qinghai Province and segmented extensional characteristics of the Lenglongling fault[J]. Chinese Journal of Geophysics, 2022, 65(4): 1536-1546 (in Chinese).
[6] 姜文亮, 李永生, 田云锋, 等. 冷龙岭地区2016年青海门源6.4级地震发震构造特征[J]. 地震地质, 2017, 39(3): 536-549.
JIANG Wen-liang, LI Yong-sheng, TIAN Yun-feng, et al. Research of seismogenic structure of the Menyuan M_S6.4 earthquake on January 21, 2016, in Lenglongling Area of NE Tibetan Plateau[J]. Seismology and Geology, 2017, 39(3): 536-549 (in Chinese).
[7] 王琼, 肖卓, 武粤, 等. 2022年1月8日青海门源M_S6.9地震深部构造背景浅析[J]. 地震学报, 2022, 44(2): 211-222.
WANG Qiong, XIAO Zhuo, WU Yue, et al. The deep tectonic background of the M_S6.9 Menyuan earthquake on January 8, 2022 in Qinghai Province[J]. Acta Seismologica Sinica, 2022, 44(2): 211-222 (in Chinese).
[8] 姜佳佳, 张辉. 祁连山地震带强震前M_L4.0地震活动特征研究[J]. 国际地震动态, 2018(8): 79-80.
JIANG Jia-jia, ZHANG Hui. Research on the seismicity of M_L4.0 before strong earthquakes in Qilianshan seismic belt[J]. Recent Developments in World Seismology, 2018(8): 79-80 (in Chinese).
[9] 郭鹏, 韩竹军, 安艳芬, 等. 冷龙岭断裂系活动性与2016年门源6.4级地震构造研究[J]. 中国科学: 地球科学, 2017, 47(5): 617-630.
GUO Peng, HAN Zhu-jun, AN Yan-fen, et al. Activity of the Lenglongling fault system and seismotectonics of the 2016 M_S6.4 Menyuan earthquake[J]. Science China: Earth Sciences, 2017, 47(5): 617-630 (in Chinese).
[10] 殷娜, 邓淼, 万飞, 等. 2016年门源M_S6.4地震孕震机制及构造意义的研究现状[J]. 山西地震, 2021(2): 21-26+43.
YIN Na, DENG Miao, WAN Fei, et al. Research status of seismogenic mechanism and tectonic significance of the 2016 Menyuan M_S6.4 earthquake[J]. Earthquake Research in Shanxi, 2021(2): 21-26+43 (in Chinese).
[11] 柳新强, 王燕, 胡泊. 2016门源6.4级地震前祁连山—海原断裂的活动速率反演[J]. 工程勘察, 2018, 46(9): 49-52.
LIU Xin-qiang, WANG Yan, HU Bo. Inversion of fault slip rate before the 2016 Menyuan 6.4 magnitude earthquake[J]. Geotechnical Investigation & Surveying, 2018, 46(9): 49-52 (in Chinese).
[12] 韩立波. 2022年青海门源M_S6.9地震震源机制解[J]. 地震科学进展, 2022, 52(2): 49-54.
HAN Li-bo. Focal mechanism of 2022 Menyuan M_S6.9 earthquake in Qinghai Province[J]. Progress in Earthquake Sciences, 2022, 52(2): 49-54 (in Chinese).
[13] 李振洪, 韩炳权, 刘振江, 等. InSAR数据约束下2016年和2022年青海门源地震震源参数及其滑动分布[J]. 武汉大学学报(信息科学版), 2022, 47(6): 887-897.
LI Zhen-hong, HAN Bing-quan, LIU Zhen-jiang, et al. Source parameters and slip distributions of the 2016 and 2022 Menyuan, Qinghai earthquakes constrained by InSAR observations[J]. Geomatics and Information Science of Wuhan University, 2022, 47(6): 887-897 (in Chinese).
[14] 朱琳, 戴勇, 石富强, 等. 祁连—海原断裂带库仑应力演化及地震危险性[J]. 地震学报, 2022, 44(2): 223-236.
ZHU Lin, DAI Yong, SHI Fu-qiang, et al. Coulomb stress evolution and seismic hazards along the Qilian-Haiyuan fault zone[J]. Acta Seismologica Sinica, 2022, 44(2): 223-236 (in Chinese).
[15] 李长军, 郝明, 李煜航, 等. 2022年1月8日M_S6.9青海门源地震震前三维地壳变形与应变分配[J]. 地球物理学报, 2023, 66(2): 576-588.
LI Chang-jun, HAO Ming, LI Yu-hang, et al. Three-dimensional crustal deformation and strain partitioning before the M_S6.9 Qinghai Menyuan earthquake on January 8, 2022[J]. Chinese Journal of Geophysics, 2023, 66(2): 576-588 (in Chinese).
[16] 赵静, 牛安福, 李强, 等. 陕西块体周边断层闭锁程度与滑动亏损特征研究[J]. 地震研究, 2016, 39(3): 351-358.
ZHAO Jing, NIU An-fu, LI Qiang, et al. Study on dynamic characteristics of fault locking and fault slip deficit in the faults around the Longxi Block[J]. Journal of Seismological Research, 2016, 39(3): 351-358 (in Chinese).
[17] 石富强, 邵志刚, 占伟, 等. 青藏高原东北缘活动断裂剪切模量及应力状态数值模拟[J]. 地球物理学报, 2018, 61(9): 3651-3663.
SHI Fu-qiang, SHAO Zhi-gang, ZHAN Wei, et al. Numerical modeling of the shear modulus and stress state of active faults in the northeastern margin of the Tibetan Plateau[J]. Chinese Journal of Geophysics, 2018, 61(9): 3651-3663 (in Chinese).
[18] Ohtake M, Matumoto T, Latham G V. Seismicity gap near Oaxaca, southern Mexico as a probable precursor to a large earthquake[J]. Pure and Applied Geophysics, 1977, 115(1): 375-385.
[19] Wyss M, Habermann R E. Precursory seismic quiescence[J]. Pure and Applied Geophysics, 1988, 126(2): 319-332.
[20] Huang Q H, Sobolev G A, Nagao T. Characteristics of the seismic quiescence and activation patterns before the M=7.2 Kobe earthquake, January 17, 1995[J]. Tectonophysics, 2001, 337(1-2): 99-116.
[21] 戴志阳, 陈宇卫, 傅容珊, 等. 前兆性地震平静研究[J]. 地球物理学进展, 2006, 21(1): 18-24.
DAI Zhi-yang, CHEN Yu-wei, FU Rong-shan, et al. The study of precursory seismic quiescence[J]. Progress in Geophysics, 2006, 21(1): 18-24 (in Chinese).
[22] Kawamura M, Wu Y H, Kudo T, et al. Precursory migration of anomalous seismic activity revealed by the pattern informatics method: A case study of the 2011 Tohoku earthquake, Japan[J]. Bulletin of the Seismological Society of America, 2013, 103(2B): 1171-1180.
[23]Sukrungsri S, Pailoplee S. Precursory seismic quiescence along the Sumatra-Andaman subduction zone: Past and present[J]. Journal of Seismology, 2017, 21: 305-315.
[24] 李文君, 曾宪伟, 罗国富, 等. 2016年1月21日青海门源M_S6.4地震的前兆异常研究[J]. 地震地磁观测与研究, 2021, 42(5): 68-75.
LI Wen-jun, ZENG Xian-wei, LUO Guo-fu, et al. Retrospective analysis of the Menyuan M_S6.4 earthquake on January 21, 2016[J]. Seismological and Geomagnetic Observation and Research, 2021, 42(5): 68-75 (in Chinese).
[25] 苏有锦, 刘杰. 2008年汶川8.0级地震前川滇地区6级以上地震平静异常[J]. 地震研究, 2010, 33(2): 119-124.
SU You-jin, LIU Jie. Quiescence anomalies of M≥6.0 earthquakes before the 2008 Wenchuan (M8.0) earthquake in Sichuan-Yunnan region[J]. Journal of Seismological Research, 2010, 33(2): 119-124 (in Chinese).
[26] 陈星星. 湖北巴东M5.1地震前兆探讨[D]. 武汉: 中国地震局地震研究所, 2015.
CHEN Xing-xing. Searching for Badong M5.1 earthquake precursors[D]. Wuhan: Institute of Seismology, China Earthquake Administration, 2015 (in Chinese).
[27] Mogi K. Some features of recent seismic activity in and near Japan (2): Activity before and after great earthquakes[J]. Bulletin of the Earthquake Research Institute, 1969, 47(3): 395-417.
[28] 沈繁銮, 符干, 袁锡文, 等. 华南中强震前区域地震活动增强平静特征[J]. 华南地震, 2003, 23(3): 11-15.
SHEN Fan-luan, FU Gan, YUAN Xi-wen, et al. The characteristics of regional seismic activity enhancement and quiet before the moderate-strong earthquake in South China Area[J]. South China Journal of Seismology, 2003, 23(3): 11-15 (in Chinese).
[29] Holliday J R, Rundle J B, Tiampo K F, et al. Systematic procedural and sensitivity analysis of the pattern informatics method for forecasting large (M>5) earthquake events in southern California[J]. Pure and Applied Geophysics, 2006, 163(11-12): 2433-2454.
[30] Cao Z Y, Wang Y X, Zhang H, et al. Study on spatio-temporal characteristics of earthquakes in southwest China based on z-value[J]. Open Geosciences, 2022, 14(1): 185-207.
[31] 蒋长胜. 川滇地区地震活动的统计物理特征[J]. 国际地震动态, 2010(2): 44-45.
JIANG Chang-sheng. Characteristics of statistical physics of the seismic activity in Sichuan-Yunnan region[J]. Recent Developments in World Seismology, 2010(2): 44-45 (in Chinese).
[32] 冯建刚, 周龙泉, 杨立明, 等. 青藏块体东北缘中强地震前小震频度异常研究[J]. 地震, 2009, 29(3): 19-26.
FENG Jian-gang, ZHOU Long-quan, YANG Li-ming, et al. Anomaly of small earthquake activities before medium to strong earthquakes in the northeast margin of the Qinghai-Tibet Block[J]. Earthquake, 2009, 29(3): 19-26 (in Chinese).
[33] Holliday J R, Nanjo K Z, Tiampo K F, et al. Earthquake forecasting and its verification[J]. Nonlinear Processes in Geophysics, 2005, 12(6): 965-977.
[34] Ogata Y, Imoto M, Katsura K. 3-D spatial variation of b-values of magnitude-frequency distribution beneath the Kanto district, Japan[J]. Geophysical Journal International, 1991, 104(1): 135-146.
[35] Huang Q H. Search for reliable precursors: A case study of the seismic quiescence of the 2000 western Tottori prefecture earthquake[J]. Journal of Geophysical Research: Solid Earth, 2006, 111(B4): B04301.
[36] 张晓东. 中国大陆强震的成组活动特征及发生机制研究[D]. 北京: 中国地震局地球物理研究所, 2004.
ZHANG Xiao-dong. Study on activity and mechanism of group strong earthquake in China Mainland[D]. Beijing: Institute of Geophysics, China Earthquake Administration, 2004 (in Chinese).
[37] 孟令媛, 解孟雨, 臧阳. 2022年门源M_S6.9和2016年门源M_S6.4地震序列比较分析[J]. 中国地震, 2022, 38(1): 1-11.
MENG Ling-yuan, XIE Meng-yu, ZANG Yang. Comparison of aftershock sequences between the 2022 Menyuan M_S6.9 earthquake and the 2016 Menyuan M_S6.4 earthquake in the Lenglongling fault zone[J]. Earthquake Research in China, 2022, 38(1): 1-11 (in Chinese).
[38] Nanjo K Z, Holliday J R, Chen C C, et al. Application of a modified pattern informatics method to forecasting the locations of future large earthquakes in the central Japan[J]. Tectonophysics, 2006, 424(3-4): 351-366.
[39] 张小涛, 张永仙, 夏彩韵, 等. 利用图像信息方法研究芦山M_S7.0地震前川滇及附近地区的图像异常[J]. 地震学报, 2014, 36(5): 780-789.
ZHANG Xiao-tao, ZHANG Yong-xian, XIA Cai-yun, et al. Anomalous seismic activities in the Sichuan-Yunnan region and its adjacent areas before the Lushan M_S7.0 earthquake by the pattern informatics method[J]. Acta Seismologica Sinica, 2014, 36(5): 780-789 (in Chinese).
[40] Brodsky E E. The importance of studying small earthquakes[J]. Science, 2019, 364(6442): 736-737.
[41] 刘桂平, 李闽峰, 李圣强, 等. 利用并行计算方法实现地震活动速率变化参数Z值的空间扫描处理及其计算效能评价[J]. 地震, 2009, 29 (4): 131-138.
LIU Gui-ping, LI Min-feng, LI Sheng-qiang, et al. Application of parallel computing to spatial scanning of seismicity rate changes (Z-value) and its efficiency evaluation[J]. Earthquake, 2009, 29(4): 131-138 (in Chinese).
[42]Wyss M, Wiemer S. Change in the probability for earthquakes in southern California due to the Landers magnitude 7.3 earthquake[J]. Science, 2000, 290(5495): 1334-1338.
[43] Wu Y M, Chiao L Y. Seismic quiescence before the 1999 Chi-Chi, Taiwan, Mw7.6 earthquake[J]. Bulletin of the Seismological Society of America, 2006, 96(1): 321-327.
[44] Pailoplee S, Panyatip S, Charusiri P. Precursory seismicity rate changes prior to the large and major earthquakes along the Sagaing fault zone, Central Myanmar[J]. Arabian Journal of Geosciences, 2017, 10(444): 1-10.
[45] 张琳琳, 唐兰兰. 新疆及周边5次M_S7.0以上地震对天山地区小震活动的影响[J]. 地震, 2018, 38(4): 159-171.
ZHANG Lin-lin, TANG Lan-lan. Influence of five M_S7.0 earthquakes on small earthquake activities in Xinjiang and its surrounding areas[J]. Earthquake, 2018, 38(4): 159-171 (in Chinese).
[46] Habermann R E. Seismicity rate variations and systematic changes in magnitudes in teleseismic catalogs[J]. Tectonophysics, 1991, 193(4): 277-289.
[47] Habermann R E. Precursory seismic quiescence: Past, present and future[J]. Pure and Applied Geophysics, 1988, 126: 279-318.
[48] Wiemer S. A software package to analyze seismicity: ZMAP[J]. Seismological Research Letters, 2001, 72(3): 373-382.
[49] Gardner J K, Knopoff L. Is the sequence of earthquakes in Southern California, with aftershocks removed, Poissonian?[J]. Bulletin of the Seismological Society of America, 1974, 64(5): 1363-1367.
[50] Zhang Y X, Zhang X T, Wu Y J, et al. Retrospective study on the predictability of pattern informatics to the Wenchuan M8.0 and Yutian M7.3 earthquakes[J]. Pure and Applied Geophysics, 2013, 170(1-2): 197-208.
[51] Kawamura M, Wu Y H, Kudo T, et al. A statistical feature of anomalous seismic activity prior to large shallow earthquakes in Japan revealed by the pattern informatics method[J]. Natural Hazards and Earth System Sciences, 2014, 14(4): 849-859.
[52] Zhang S F, Wu Z L, Jiang C S. The central China north-south seismic belt: Seismicity, ergodicity, and five-year PI forecast in testing[J]. Pure and Applied Geophysics, 2016, 173(1): 245-254.
[53] Radan M Y, Hamzehloo H, Peresan A, et al. Assessing performances of pattern informatics method: A retrospective analysis for Iran and Italy[J]. Natural Hazards, 2013, 68(2): 855-881.
[54] Chen C C, Wu Y X. An improved region-time-length algorithm applied to the 1999 Chi-Chi, Taiwan earthquake[J]. Geophysical Journal International, 2006, 166(3): 1144-1147.
[55] 蒋长胜, 吴忠良, 马宏生, 等. PI算法用于川滇—安达曼—苏门答腊地区7.0级以上强震危险性预测的回溯性检验[J]. 地震学报, 2009, 31(3): 307-318.
JIANG Chang-sheng, WU Zhong-liang, MA Hong-sheng, et al. Sichuan-Yunnan versus Andaman-Sumatra: PI approach and retrospective forecast test[J]. Acta Seismologica Sinica, 2009, 31(3): 307-318 (in Chinese).
[56] Mohanty W K, Mohapatra A K, Verma A K, et al. Earthquake forecasting and its verification in northeast India[J]. Geomatics, Natural Hazards and Risk, 2016, 7(1): 194-214.
[57] 宋程, 张永仙, 周少辉, 等. 2021年玛多M_S7.4地震的PI热点特征回溯性预测研究[J]. 地震研究, 2023, 46(2) : 226-236.
SONG Cheng, ZHANG Yong-xian, ZHOU Shao-hui, et al. Retrospective study on the forecast of the 2021 Maduo M_S7.4 earthquake by PI method[J]. Journal of Seismological Research, 2023, 46(2): 226-236 (in Chinese).
[58] 夏彩韵, 张永仙, 张小涛, 等. 利用两次新疆于田M_S7.3地震对图像信息方法可预测性的检验[J]. 地震学报, 2015, 37(2): 312-322.
XIA Cai-yun, ZHANG Yong-xian, ZHANG Xiao-tao, et al. Predictability test for pattern information method by two M_S7.3 Yutian, Xinjiang, earthquakes[J]. Acta Seismologica Sinica, 2015, 37(2): 312-322 (in Chinese).
[59] 蒋卉, 吴忠良, 马腾飞, 等. 对图像信息学(PI)算法的一个回溯性预测检验: 四川芦山7.0级地震[J]. 物理, 2013, 42(5): 334-340.
JIANG Hui, WU Zhong-liang, MA Teng-fei, et al. Retrospective test of the PI forecast: Case study of the April 20, 2013, Lushan, Sichuan, China, M_S7.0 earthquake[J]. Physics, 2013, 42(5): 334-340 (in Chinese).
[60] 尼鲁帕尔·买买吐孙, 余怀忠. 利用图像信息方法研究库车M_S5.6、于田M_S6.4地震前异常演化[J]. 内陆地震, 2020, 34(3) : 215-222.
Nilupaer Maimaitusun, YU Huai-zhong. Anomalous evolution before Kuche M_S5.6 and Yutian M_S6.4 earthquake by pattern informatics method[J]. Inland Earthquake, 2020, 34(3): 215-222 (in Chinese).
[61] Moore E F. Machines models of self-reproduction[J]. Mathematical Problems in the Biological Sciences, 1962, 14: 17-33.
[62] 宋程, 张永仙, 夏彩韵, 等. 日本东北M_W9.0地震的PI模型参数设置与预测效能回溯性检验[J]. 地震学报, 2018, 40(4): 491-505.
SONG Cheng, ZHANG Yong-xian, XIA Cai-yun, et al. Retrospective test on the forecasting efficacy of PI models with different parameters for the Tohoku-Oki M_W9.0 earthquake[J]. Acta Seismologica Sinica, 2018, 40(4): 491-505 (in Chinese).
[63] 李莹, 田建慧, 李心怡, 等. 2022年9月5日四川泸定M_S6.8地震深部构造特征[J]. 地球物理学报, 2023, 66(4): 1385-1396.
LI Ying, TIAN Jian-hui, LI Xin-yi, et al. Deep tectonic pattern of the Luding M_S6.8 earthquake on 5th September 2022 in Sichuan Province, China[J]. Chinese Journal of Geophysics, 2023, 66(4): 1385-1396 (in Chinese).
[64]McCaffrey R. Block kinematics of the Pacific-North America plate boundary in the southwestern United States from inversion of GPS, seismological, and geologic data[J]. Journal of Geophysical Research: Solid Earth, 2005, 110(B7): B07401.
[65] Li Y H, Liu M, Wang Q L, et al. Present-day crustal deformation and strain transfer in northeastern Tibetan Plateau[J]. Earth and Planetary Science Letters, 2018, 487: 179-189.
[66] Zheng W J, Zhang P Z, He W G, et al. Transformation of displacement between strike-slip and crustal shortening in the northern margin of the Tibetan Plateau: Evidence from decadal GPS measurements and late Quaternary slip rates on faults[J]. Tectonophysics, 2013, 584: 267-280.
[67] 潘家伟, 李海兵, Marie-Luce Chevalier, 等. 2022年青海门源M_S6.9地震地表破裂带及发震构造研究[J]. 地质学报, 2022, 96(1): 215-231.
PAN Jia-wei, LI Hai-bing, Marie-Luce Chevalier, et al. Coseismic surface rupture and seismogenic structure of the 2022 M_S6.9 Menyuan earthquake, Qinghai Province, China[J]. Acta Geologica Sinica, 2022, 96(1): 215-231 (in Chinese).

Comparative Research of the 2016 M_S6.4 and 2022 M_S6.9 Earthquakes in Menyuan Based on the z-Value and PI Method

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 5

Recommended Articles

Metrics

Comments

[1]	YAN Kun, WANG Wei-jun, KOU Hua-dong, YE Zhi-peng. The Aftershock Evolution and Earthquake Triggering of the 2022 Menyuan M_S6.9 Earthquake [J]. EARTHQUAKE, 2023, 43(1): 15-32.
[2]	LI Rui-sha, ZHANG Xi, JIA Peng, BAI Zhuo-li. The Ratio of Cross-fault Anomalous Site in the Northeastern Margin of Qinghai-Tibet Block and Application in the Earthquake Prediction [J]. EARTHQUAKE, 2020, 40(2): 71-81.
[3]	ZHANG Lin-lin, TANG Lan-lan. Influence of Five M_S7.0 earthquakes on Small Earthquake Activities in Xinjiang and its Surrounding Areas [J]. EARTHQUAKE, 2018, 38(4): 159-171.
[4]	SONG Cheng,ZHANG Yong-xian,XIA Cai-yun,WU Yong-jia. Retrospective Forecasting Study of the Tohoku M_W9.0 Earthquake by Pattern Informatics Method [J]. EARTHQUAKE, 2017, 37(2): 47-56.
[5]	LIU Qi, ZHANG Jing, MA Zhen. Anomaly Characteristics of 4-component Borehole StrainAnalyzed Jointly with Borehole Water Level and GPS Data before the 2016 Menyuan M_S6.4 Earthquake [J]. EARTHQUAKE, 2016, 36(3): 76-86.

Comparative Research of the 2016 MS6.4 and 2022 MS6.9 Earthquakes in Menyuan Based on the z-Value and PI Method

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 5

Recommended Articles

Metrics

Comments

Comparative Research of the 2016 M_S6.4 and 2022 M_S6.9 Earthquakes in Menyuan Based on the z-Value and PI Method