大地震造成的地面运动可能在远场触发微震。通过对比检视胶东半岛地区应变仪和强震仪记录，估算2021年9月16日四川泸县MS 6.0地震在该区造成的动态应力变化，从而认为其后在乳山海域发生的ML 2.9地震可能是受到此次泸县MS 6.0地震触发的一次小震活动。
Strong earthquakes can trigger micro-earthquakes in far fields. An ML 2.9 earthquake occurred in the Rushan sea area several minutes after the Sept. 16, 2021, Luxian MS 6.0 earthquake. We examine records of strainmeters and strong motion accelerographs in the Jiaodong Peninsula and estimate the dynamic stress caused by the Luxian MS 6.0 earthquake. We finally conclude that the Rushan ML 2.5 earthquake might be triggered by the Luxian MS 6.0 earthquake.
2022,43(S1): 52-55
DOI：10.3969/j.issn.1003-3246.2022.S1.018
基金项目：中国地震科学实验场地震可预测性国际合作项目（项目编号：2018YFE0109700）
作者简介：郑建常(1978-),男,博士,研究员,主要从事地震活动性分析工作。E-mail:zjcmail@yeah.net
参考文献：
龚萱,陈棋福,彭志刚,等. 2010年智利8.8级地震在北京房山岩体附近的动态触发活动[J].地球物理学报,2014,57(1):115-128.
秦保燕,姚立珣,徐纪人,等.西海固地区小震调制特征[J]. 西北地震学报,1983,27(S1):1-5.
解朝娣,吴小平,朱元清.大震地震波对云南地震活动的远场动态应力触发作用[J]. 地震研究,2009,32(4):357-365.
杨晶琼,李月芯,运乃丹,等. 云南小江断裂带北段动态触发现象研究[J]. 地球物理学报,2021,64(9):3 207-3 219.
尹祥础. 地震预报的新途径——加卸载响应比理论[J]. 力学与实践,2004,26(6):1-7.
周江存,孙和平,徐建桥,等.地球内部应变与应力固体潮[J].地球物理学报,2013,56(11):3 779-3 787.
周仕勇,杨周胜,杨晶琼,等. 基于高频能量谱高效检测远震动态触发效应的新方法及在云南小江断裂带的应用[J]. 国际地震动态,2018, (8):106.
Brodsky E E, van der Elst N J. The uses of dynamic earthquake triggering[J]. Annual Review of Earth and Planetary Sciences, 2014, 42(1):317-339.
Chao K, Obara K. Triggered tectonic tremor in various types of fault systems of Japan following the 2012 MW 8.6 Sumatra earthquake[J]. Journal of Geophysical Research:Solid Earth, 2016, 121(1):170-187.
Hill D P, Reasenberg P A, Michael A, et al. Seismicity remotely triggered by the magnitude 7.3 Landers, California, earthquake[J]. Science, 1993, 260(5 114):1 617-1 623.
Peng Z, Chao K. Non-volcanic tremor beneath the Central Range in Taiwan triggered by the 2001 MW 7.8 Kunlun earthquake[J]. Geophysical Journal International, 2008, 175(2):825-829.
Peng Z G, Vidale J E, Wech A G, et al. Remote triggering of tremor along the San Andreas Fault in central California[J]. Journal of Geophysical Research:Solid Earth, 2009, 114(B7):B00A06
O'Malley R T, Mondal D, Goldfinger C, et al. Evidence of systematic triggering at teleseismic distances following large earthquakes[J]. Scientific reports, 2018, 8(1):1-12.
Toda S, J Lin, M Meghraoui, et al. 12 May 2008 M=7.9 Wenchuan, China, earthquake calculated to increase failure stress and seismicity rate on three major fault systems[J]. Geophysical Research Letters, 2008, 35:L17305, 1-6.
Wu C Q, Peng Z G, Wang W J, et al. 2011. Dynamic triggering of shallow earthquakes near Beijing, China[J]. Geophys J Int, 185(3):1 321-1 334.
Xie C D, Wu X P, Lei X L, et al. Long-period tides and global earthquake energy release[J]. Chinese Journal of Geophysics, 2013, 56(6):823-832.
