潮汐应力对发震断层作用的统计分析
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摘要
计算了中国及邻区1069个地震震源处沿主压应力P轴和主张力T轴方向的潮汐应力分量,并分析了这些量对发震断层的作用方式,按纬度区域统计了与潮汐应力促滑作用有关的发震断层类型以及它们与潮汐应力作用方式的关系,得到了如下结论:与潮汐应力促滑作用有关的发震断层数的比例随区域纬度增加有减小趋势。其中,走滑型断层的比例在低纬区较大,而倾滑斜滑型断层的比例在中高纬度区较大;对发震断层有促滑作用的潮汐应力作用方式分增压型和减压型。对整个统计区域而言,与增压型潮汐应力促滑作用有关的发震断层数比例大于与减压型潮汐应力促滑作用有关的发震断层;对不同的纬度区域,不同的潮汐应力作用方式与之促滑的断层类型也有不同的分布特征。
Tidal stress components along P axis and T axis of 1069 earthquake focuses distributed in China and its neighbor areas are calculated. Partterns of tidal stress effect on the earthquake faults are analyzed. Statistics of seismic fault types related to slip-accelerating effect of tidal stress and relationship between the types and the patterns are made for various latitude areas. The following features are obtained: Proportion of the number of seismic faults related to the slip-accelerating effect of tidal stress has decreasing trend with latitudinal rising. Among them. proportion of the strike-slip faults in low latitude area is comparatively large but that of the dip-oblique-slip faults in middle high latitude area is comparatively large. The patterns of tidal stress effect of slip acceleration are classified into compression-adding type and compression-reducing type. For the whole area, proportion of the number of seismic faults affected by the compression-adding type is larger than that affected by the compression-reducing type. For different latitude areas, various patterns of tidal stress effects and relevant types of seismic faults have various distributing features.
Tidal stress components along P axis and T axis of 1069 earthquake focuses distributed in China and its neighbor areas are calculated. Partterns of tidal stress effect on the earthquake faults are analyzed. Statistics of seismic fault types related to slip-accelerating effect of tidal stress and relationship between the types and the patterns are made for various latitude areas. The following features are obtained: Proportion of the number of seismic faults related to the slip-accelerating effect of tidal stress has decreasing trend with latitudinal rising. Among them. proportion of the strike-slip faults in low latitude area is comparatively large but that of the dip-oblique-slip faults in middle high latitude area is comparatively large. The patterns of tidal stress effect of slip acceleration are classified into compression-adding type and compression-reducing type. For the whole area, proportion of the number of seismic faults affected by the compression-adding type is larger than that affected by the compression-reducing type. For different latitude areas, various patterns of tidal stress effects and relevant types of seismic faults have various distributing features.
引文
1 Shlien S. Earthquake-tide correlation. Geophys. J. R. Astr. Soc., 1972, 28(1) : 27--34
2 Klein F W. Earthquakes warms and the semidiurnal solid earth tide. Geophys. J. R. Astr. Soc.,1976． 45(2) :245--295
3 Young D, Zürn W. Tidal triggering of earthquakes in the Swabian Jura? J. Geophys., 1979, 45(1) : 171--182
4 Mohler A S. Earthquake/earthtide correlation and other features of the Susanvile. California,earthquake sequence of Jone-July 1976． Bull. Seism. Soc. Am., 1980． 70(5) : 1583--1593
5 Mcnutt S R.Beavan R J. Patterns of earthquakes and the effect of solid earth and ocean load tides at Mount St. Helens prior to the May 18, 1980, Eruption. J. Geophys. Res., 1984, 89(B5) : 3075--3086
6 Palumbo A. Luner and solar tidal components in the occurrence of earthquake in Italy. Geophys. J. R. Astr. Sac., 1986, 84(1) : 93--99
7 Rydelek P A, Davis P M, Koyangagi R Y. Tidal triggering of earthquake swarms at Kilauea Volcano, Hawaii. J. Geophys. Res., 1988, 93(B5) : 4401--4411
8 Lopes R M C, Malin S R C, Mazzarella A. et al. Lunar and solar triggering of earthquakes. Phys. Earth. Planet. Inter., 1990, 59(1) : 127--129
9 Rydelek P A, Sacks I S, Scarpa R. On tidal triggering of earthquakes at Campi Flegrei, Italy. Geophys. J. Int., 1992． 109 (1) :125--137
10 Hiroshi Tsuruoka, Masakazu ohtake, Haruo Sato. Statistical test of the tidal triggering of earthquakes; contribution of the ocean tide loading effect. Geophys. J. Int., 1995． 122(1) : 183--194
11 杜品仁。18． 6年地震轮回及其成因初探.地球物理学报。1994,37(3) :362-369 DU Pin-Ren 18． 6 years seismic cycle and the preliminary exploration for its cause. Chinese J. Geophys., (in Chinese). 1994． 37(3) :362--369
12 杜品仁.全球主要地震区中源和深源大地震的18． 6年轮回.地球物理学报,1996,39(3) :327-334 DU Pin-Ren. 18． 6 years cycles of large intermediate and deep focus earthquakes in the world's major seismic regions. Chinese J. Geophys. (in Chinese), 1996,39(3) : 327--334
13 Heaton T H. Tidal triggering of earthquakes. Geophys. J.R. Astr. Soc., 1975, 43(2) : 307--334
14 Souriau M, Souriau A, Gagnepain J. Modeling and detecting interactions between earthtides and earthquakes with application to an aftershock sequence in the Pyrenees. Bull. Seism. Soc. Am., 1982, 72(1) : 165--180
15 Heaton T H. Tidal trggering of earthquakes. Bull. Seism. Soc. Am., 1982, 72(6) : 2181--2200
16 Kilston S, Knopoff L. Lunar-solar periodicitis of large earthquakes in southern California. Nature, 1983, 304(7) : 21--25
17 杜品仁.潮汐与地震关系初探.地震科学研究,1981,1:14-20 DU Pin-Ren. A preliminary exploration for tide-earthquake relation, Earthquake Science Research (in Chinese), 1981, 1: 14-20
18 高锡铭,殷志山,王威中.固体潮应力张量对地震的触发作用.地震学报,1981,3(3) :264-275 GAO Xi-Ming, YIN Zhi-Shan, WANG Wei-Zhong. Triggering of earthquakes by the tidal stress tensor. Acta Seismologica Sinica (in Chinese), 1981,3(3) : 264-275
19 丁中一,贾晋康,王仁.潮汐应力对地震的触发作用.地震学报,1983,5(2) :172-184 DING Zhong-Yi, JIA Jin-Kang, WANG Ren. Seismic triggering effect of tidal stress. Acta Seismologica Sinica (in Chinese), 1983, 5(2) : 172--184
20 蒋骏,张雁滨.发震断层面上潮汐有效剪切应力增量的计算与加卸载的确定,中国地震,1995,11(1) :72-83 JIANG Jun, ZHANG Yan-Bin. Calculation of the tide-effective shear stress increment on the seismic fault surface and determination of the load and unload. Earthquake Research in China (in Chinese), 1995, 11(1) : 72--83
21 陈颙.地壳岩石力学性能.北京:地震出版社,1988． 41-94 CHEN Yong. Mechanical Properties of Crust Rocks (in Chinese). Beijing: Seismological Press, 1988． 41-94
22 张诚,曹新玲,曲克信等.中国地震震源机制.北京;学术期刊出版社,1990 ZHANG Cheng, CAO Xin-Ling, QU Ke-Xin, et al. The Focal Mechanism of Earthquakes in China (in Chinese). Bejing: Academic Books and Periodical Press, 1990
23 吴庆鹏.重力学与固体潮.北京:地震出版社,1997． 206-210 WU Qing-Peng. Gravity and Solid Tide (in Chinese). Beijing: Seismologicl Press, 1997． 206--210
24 郗钦文.固体潮理论值计算.地球物理学报,1982,25(增刊):157-164 XI Qin-Wen. A calculation of theoretical value of
2 Klein F W. Earthquakes warms and the semidiurnal solid earth tide. Geophys. J. R. Astr. Soc.,1976． 45(2) :245--295
3 Young D, Zürn W. Tidal triggering of earthquakes in the Swabian Jura? J. Geophys., 1979, 45(1) : 171--182
4 Mohler A S. Earthquake/earthtide correlation and other features of the Susanvile. California,earthquake sequence of Jone-July 1976． Bull. Seism. Soc. Am., 1980． 70(5) : 1583--1593
5 Mcnutt S R.Beavan R J. Patterns of earthquakes and the effect of solid earth and ocean load tides at Mount St. Helens prior to the May 18, 1980, Eruption. J. Geophys. Res., 1984, 89(B5) : 3075--3086
6 Palumbo A. Luner and solar tidal components in the occurrence of earthquake in Italy. Geophys. J. R. Astr. Sac., 1986, 84(1) : 93--99
7 Rydelek P A, Davis P M, Koyangagi R Y. Tidal triggering of earthquake swarms at Kilauea Volcano, Hawaii. J. Geophys. Res., 1988, 93(B5) : 4401--4411
8 Lopes R M C, Malin S R C, Mazzarella A. et al. Lunar and solar triggering of earthquakes. Phys. Earth. Planet. Inter., 1990, 59(1) : 127--129
9 Rydelek P A, Sacks I S, Scarpa R. On tidal triggering of earthquakes at Campi Flegrei, Italy. Geophys. J. Int., 1992． 109 (1) :125--137
10 Hiroshi Tsuruoka, Masakazu ohtake, Haruo Sato. Statistical test of the tidal triggering of earthquakes; contribution of the ocean tide loading effect. Geophys. J. Int., 1995． 122(1) : 183--194
11 杜品仁。18． 6年地震轮回及其成因初探.地球物理学报。1994,37(3) :362-369 DU Pin-Ren 18． 6 years seismic cycle and the preliminary exploration for its cause. Chinese J. Geophys., (in Chinese). 1994． 37(3) :362--369
12 杜品仁.全球主要地震区中源和深源大地震的18． 6年轮回.地球物理学报,1996,39(3) :327-334 DU Pin-Ren. 18． 6 years cycles of large intermediate and deep focus earthquakes in the world's major seismic regions. Chinese J. Geophys. (in Chinese), 1996,39(3) : 327--334
13 Heaton T H. Tidal triggering of earthquakes. Geophys. J.R. Astr. Soc., 1975, 43(2) : 307--334
14 Souriau M, Souriau A, Gagnepain J. Modeling and detecting interactions between earthtides and earthquakes with application to an aftershock sequence in the Pyrenees. Bull. Seism. Soc. Am., 1982, 72(1) : 165--180
15 Heaton T H. Tidal trggering of earthquakes. Bull. Seism. Soc. Am., 1982, 72(6) : 2181--2200
16 Kilston S, Knopoff L. Lunar-solar periodicitis of large earthquakes in southern California. Nature, 1983, 304(7) : 21--25
17 杜品仁.潮汐与地震关系初探.地震科学研究,1981,1:14-20 DU Pin-Ren. A preliminary exploration for tide-earthquake relation, Earthquake Science Research (in Chinese), 1981, 1: 14-20
18 高锡铭,殷志山,王威中.固体潮应力张量对地震的触发作用.地震学报,1981,3(3) :264-275 GAO Xi-Ming, YIN Zhi-Shan, WANG Wei-Zhong. Triggering of earthquakes by the tidal stress tensor. Acta Seismologica Sinica (in Chinese), 1981,3(3) : 264-275
19 丁中一,贾晋康,王仁.潮汐应力对地震的触发作用.地震学报,1983,5(2) :172-184 DING Zhong-Yi, JIA Jin-Kang, WANG Ren. Seismic triggering effect of tidal stress. Acta Seismologica Sinica (in Chinese), 1983, 5(2) : 172--184
20 蒋骏,张雁滨.发震断层面上潮汐有效剪切应力增量的计算与加卸载的确定,中国地震,1995,11(1) :72-83 JIANG Jun, ZHANG Yan-Bin. Calculation of the tide-effective shear stress increment on the seismic fault surface and determination of the load and unload. Earthquake Research in China (in Chinese), 1995, 11(1) : 72--83
21 陈颙.地壳岩石力学性能.北京:地震出版社,1988． 41-94 CHEN Yong. Mechanical Properties of Crust Rocks (in Chinese). Beijing: Seismological Press, 1988． 41-94
22 张诚,曹新玲,曲克信等.中国地震震源机制.北京;学术期刊出版社,1990 ZHANG Cheng, CAO Xin-Ling, QU Ke-Xin, et al. The Focal Mechanism of Earthquakes in China (in Chinese). Bejing: Academic Books and Periodical Press, 1990
23 吴庆鹏.重力学与固体潮.北京:地震出版社,1997． 206-210 WU Qing-Peng. Gravity and Solid Tide (in Chinese). Beijing: Seismologicl Press, 1997． 206--210
24 郗钦文.固体潮理论值计算.地球物理学报,1982,25(增刊):157-164 XI Qin-Wen. A calculation of theoretical value of
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