近期天山地震带地震活动固体潮调制的统计分析

地震 ›› 2014, Vol. 34 ›› Issue (2): 35-44.

近期天山地震带地震活动固体潮调制的统计分析

李金¹, 蒋海昆², 黄瑜³, 曲均浩⁴, 高朝军¹

1.新疆维吾尔自治区地震局, 新疆乌鲁木齐 830011;
2.中国地震台网中心, 北京 100045;
3.新疆喀什基准台, 新疆喀什 844000;
4.山东省地震局, 山东济南 250014

收稿日期:2013-02-28 发布日期:2020-07-14
作者简介:李金(1986-), 男, 新疆昌吉人, 硕士研究生毕业, 主要从事地震预测方法等研究。
基金资助:
中国地震局2013年度震情跟踪合同制定向任务(2013020119)和新疆地震局青年地震基金项目(201304)联合资助

Statistical Analysis on Tidal Triggering of Recent Earthquakes in the Tianshan Seismic Zone

LI Jin¹, JIANG Hai-kun², HUANG Yu³, QU Jun-hao⁴, GAO Chao-jun¹

1. Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, China;
2. China Earthquake Networks Center, Beijing 100045, China;
3. KashiStandard Seismic Station of Xinjiang Earthquake Administration, Kashi 844000, China;
4. Earthquake Administration of Shandong Province, Jinan 250014, China

Received:2013-02-28 Published:2020-07-14

摘要/Abstract

摘要： 利用Schuster检验方法, 以潮汐体应力为计算量, 采用2010年1月1日至2012年8月31日天山中东段M_L≥2.0的地震数据, 对天山地震带地震活动受固体潮触发情况从时、空两方面进行统计分析。研究结果显示, Schuster检验p值时间窗平滑结果与天山地震带较强地震的发生对应较好, 尤其是2011年11月1日尼勒克6.0级地震之前很长一段时间, Schuster检验p值时间窗平滑结果一直低于潮汐触发地震的阈值0.05, 而尼勒克6.0级地震发生后, 该值迅速恢复到较高水平, 反应了此次地震的发生与固体潮的密切关系; 从Schuster检验p值空间窗平滑结果看, 尼勒克6.0级地震也处于或接近潮汐调制触发地区。因而, 从时、空两方面的检验结果看, 尼勒克6.0级地震的发生受固体潮调制明显。

关键词: 天山地震带, 尼勒克地震, 固体潮触发, Schuster检验

Abstract: A statistical analysis on earthquake activity in the Tianshan seismic belt triggered by tideswas spatio-temporally studied based on Schuster’s test. The data was chosen from January 1, 2010 to August 31, 2012 with M_L≥2.0 in the east of the Tianshan, forthe tidal body stress asthe calculation. The results showed that the p-value based on the time window smoothing of the Schuster’s test corresponded better with the strong earthquakes in the Tianshan seismic belt,especially that a long time before November 1, 2011 Nilka 6.0 earthquake, the p-value of the Schuster’s test was always lower than the threshold for tidal trigger of earthquake 0.05, however,that value was quickly restored to a high level after the Nilka 6.0 earthquake, this reflected a close relationship between the Nilka 6.0 earthquake and the Earth tide. According to the p-value based on the spatial window smoothing of the Schuster’s test, Nilka 6.0 earthquake was at or near the tidal triggering area. Judgingfrom the spatio-temporal results, thet Nilka 6.0 earthquake was obviously triggered by Earth tides.

Key words: Tidal triggering of earthquakes, The Tianshan seismic zone, Schuster’s test, the 2011 Nilka earthquake

中图分类号:

P315.7

李金, 蒋海昆, 黄瑜, 曲均浩, 高朝军. 近期天山地震带地震活动固体潮调制的统计分析[J]. 地震, 2014, 34(2): 35-44.

LI Jin, JIANG Hai-kun, HUANG Yu, QU Jun-hao, GAO Chao-jun. Statistical Analysis on Tidal Triggering of Recent Earthquakes in the Tianshan Seismic Zone[J]. EARTHQUAKE, 2014, 34(2): 35-44.

参考文献

[1] 熊小松, 高锐, 李秋生, 等. 天山造山带的深部结构[J]. 地球物理学进展, 2011, 26(6): 1906-1914, doi: 10.3969/j.issn.1004-2903.2011.06.003.
[2] 胥颐, 刘福田, 刘建华, 等. 天山地震带的地壳结构与强震构造环境[J]. 地球物理学报, 2000, 43(2): 184-193.
[3] 高国英, 王季达. 天山地震带及乌恰交汇区强震活动特征[J]. 内陆地震, 1993, 7(3): 271-278.
[4] Tanaka S. Tidal triggering of earthquakes precursory to the recent Sumatra megathrust earthquakes of 26 December 2004 (M_W9.0), 28 March 2005 (M_W8.6), and 12 September 2007 (M_W8.5)[J]. Geophys Res Lett, 2010, 37: L02301, doi: 10.1029/2009GL041581.
[5] Tanaka S, Ohtake M, Sato H. Tidal triggering of earthquakes in Japan related to the regional tectonic stress[J]. Earth Planets Space, 2004, 56: 511-515.
[6] Cadicheanu N, Ruymbeke M V, Zhu P. Tidal triggering evidence of intermediate depth earthquakes in the Vrancea zone (Romania) [J]. Nat Hazards Earth Syst Sci, 2007, 7: 733-740.
[7] Cochran E S, Vidale J E, Tanaka S. Earth Tides Can Trigger Shallow Thrust Fault Earthquakes [J]. Science, 2004, 306: 1164-1166.
[8] Tanaka S, Ohtake M, Sato H. Spatio-temporal variation of the tidal triggering effect on earthquake occurrence associated with the 1982 South Tonga earthquake of M_W7.5[J]. Geophys Res Lett, 2002a, 29, doi: 10.1029/2002GL015386.
[9] Tanaka S, Sato H, Matsumura S, et al. Tidal triggering of earthquakes in the subducting Philippine Sea plate beneath the locked zone of the plate interface in the Tokai region, Japan[J]. Tectonophysics, 2006, 417: 69-80.
[10] Reasenberg, Second-Order moment of central California seismicity, 1969-1982[J]. Journal of Geophysical Research, 1985, 90(B7): 5479-5495.
[11] Tsuruoka H, Ohtake M, Sato H. Statistical test of the tidal triggering of earthquakes: contribution of the ocean tide loading effect[J]. Geophys J Int, 1995, 122: 183-194.
[12] Heaton T H. Tidal triggering of earthquakes[J]. Geophys J, 1975, 43(2): 307-326.
[13] 吴小平, 冒蔚, 黄雍, 等. 基于不同构造分区中国地震的潮汐应力触发效应及相关天文特征[J]. 中国科学, 2009, 39(6): 901-912.
[14] Li Q, Xu G M. Tidal triggering of earthquakes in Longmen Shan region: the relation to the fold belt and basin structures[J]. Earth Planets Space, doi: 10.5047/eps.2011.06.037.
[15] 李金, 蒋海昆. 汶川地震余震活动固体潮调制的统计分析[J]. 中国地震, 2011, 27(4): 363-375.
[16] 蒋海昆, 吴琼, 宋金, 等. 双层黏弹介质模型条件下地震应力扰动的时空特征[J]. 地球物理学报, 2012, 55(4): 1240-1248, doi: 10.6038/j.issn.0001-5733.2012.04.019.
[17] Tanaka S, Ohtake M, Sato H. Evidence for tidal triggering of earthquakes as revealed from statistical analysis of global data[J]. J Geophys Res, 2002b, 107(B10): 2211, doi: 2210.1029/2001JB001577.
[18] 许亚吉, 吴小平, 阎春恒, 等. 不同类型地震断层上的固体潮汐库仑破裂应力特征[J]. 地球物理学报, 2011, 54(3): 756-763, doi: 10.3969/j.issn.0001- 5733.2011.03.015.
[19] 魏芸芸, 聂晓红. 新疆新源、和静交界M_S6. 6地震前部分地震学异常及序列特征[J]. 内陆地震, 2012, 26(4): 337-346.
[20] King G C P, Stein R S, Lin J. Static stress changes and the triggering of earthquake [J]. Bulletin of the Seismological Society of America, 1994, 84(3): 935-953.
[21] Ali S T, Freed A M, Calais E, et al. Coulomb stress evolution in Northeastern Caribbean over the past 250 years due to coseismic, postseismic and interseismic deformation[J]. Geophysical Journal International, 2008, 174(3): 904-918.
[22] Kirby S. Tectonic stress in the lithosphere: Constraints provided by the experimental deformation of rock[J]. J geophys Res, 1980, 85: 6353-6363.