汶川8.0级地震触发与余震活动空间分布研究

Abstract

Abstract: In this paper, we study the historical and current seismicity in the Longmenshan fault where Wenchuan M8.0 earthquake occurred in 2008, and calculate the Coulomb failure static stress changes derived from the mainshock and discusses the relation between the seismic triggering and the distribution of aftershocks. The results show that the Longmenshan fault can be divided by the line marked by Huya-Beichuan-Anxian, and there is a big difference of seismicity in the Southwest and Northeast parts. Seismicity in these two areas has no relation though they belong to the same fault. The Coulomb failure static stress changes in space have obvious segmentation characteristics after the Wenchuan M8.0 mainshock occurred. The values of Coulomb failure static stress changes between Beichuan and Qingchuan in the Longmenshan fault are larger than 0.05 MPa, indicating seismic triggering effects on the aftershocks occurred later in the area.

Key words: Wenchuan earthquake, Seismic triggering, Aftershock activity, Coulomb failure static stress changes

CLC Number:

P315.7

HUA Wei, CHEN Zhang-li, Li Zhi-xiong, ZHAO Cui-ping, WANG Qin-cai. Seismic Triggering and the Aftershock Distribution of the Wenchuan M8.0 Earthquake[J]. EARTHQUAKE, 2009, 29(1): 33-39.

References

[1] 陈国光, 计凤桔, 周荣军, 等. 龙门山断裂带晚第四纪活动性分段的初步研究[J]. 地震地质. 2007, 29(3): 657-673.
[2] 张培震, 徐锡伟, 闻学泽, 等. 2008年汶川8.0级地震发震断裂的滑动速率、复发周期和构造成因[J]. 地球物理学报, 2008, 51(4): 1066-1073.
[3] 万永革, 吴忠良, 周公威, 等. 地震应力触发研究[J]. 地震学报, 2002, 24(5): 533-551.
[4] Hardebeck J L, Nazareth J J, Hauksson E. The static stress change triggering model: Constraints from two southern California aftershock sequences[J]. J Geophys Res, 1998, 103: 24427-24437.
[5] Toda S, Stein R S. Did stress triggering cause the large off-fault aftershocks 0f the 25 March 1998 M_W=8.1 Antarctic plate earthquake?[J]. Geophys Res Lett, 2000, 27: 2301-2304.
[6] Stein R S, Barka A A, Dieterich J H. Progressive failure on the North Anatolian fault since 1939 by earthquake stress triggering[J]. Geophys J Int, 1997, 128: 594-604.
[7] Nalbant S S, Hubert A, King G C P. Stress coupling between earthquakes in northwest Turkey and the north Aegean Sea[J]. J Geophys Res, 1998, 103: 24469-24486.
[8] Robinson R, McGinty P J. The enigma of the Authur's Pass, New Zealand, earthquake 2. The aftershock distribution and its relation to regional and induced stress field[J]. J Geophys Res, 2000, 105: 16139-16150.
[9] Nikolaev A. Inducing of earthquakes by underground nuclear explosions[A]. In: Console R, Nikolaev A eds, Earthquakes Induced by Underground Nuclear Explosions: Enviromental and Ecologial Problems[C]. Heidelberg: Springer Verlag, 1995. 11-19.
[10] Nostro C, Stein R S, Cocco M, et al. Two-way coupling between Vesuvius eruptions and southern Apennine earthquakes, Italy, by elastic stress transfer[J]. J Geophys Res, 1998, 103: 24487-24504.
[11] Nishimura T, Fujiwara S, Murakami M, et al. The M6.1 earthquake triggered by volcanic inflation of Iwate volcano, northern Japan, observed by satellite radar interferometry[J]. Geophys Res Lett, 2001, 28: 635-638.
[12] Okada Y. Internal deformation due to shear and tensile faults in half-space[J]. Bull Seism Soc Amer, 1992, 82: 1018-1040.
[13] Reasenberg P A, Simpson R W. Respone of regional seismicity to the static stress change produced by the Loma Prieta earthquake[J]. Science, 1992, 255: 1687-1690.
[14] King G C P, Stein R S, Lin J. Static stress changes and the triggering of earthquakes[J]. Bull Seism Amer, 1994, 84: 935-953.
[15] Harris R A. Introduction to special section: Stress triggering, stress shadows, and implications for seismic hazard[J]. J Geophys Res, 1998, 103: 24347-24358.
[16] Stein R S. The role of stress transfer in earthquake occurrence[J]. Nature, 1999, 402: 605-609.
[17] 华卫, 刘杰, 郑斯华, 等. 2003年云南大姚6.2级、 6.1级地震序列特征分析及地震触发研究[J]. 中国地震, 2006, 22(1): 10-23.
[18] 郝平, 傅征祥, 田勤俭, 等. 昆仑山口西8.1级地震强余震库仑破裂应力触发研究[J]. 地震学报, 2004, 26(1): 30-37.
[19] Rydelek P A, Sacks I S. Large earthquake occurrence affected by small changes[J]. Bull Seism Soc Amer, 1999, 89: 822-828.
[20] 陈章立. 浅论地震预报地震学方法基础[M]. 北京: 地震出版社, 2004.

Seismic Triggering and the Aftershock Distribution of the Wenchuan M8.0 Earthquake

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