Junji Koyamaup, Sihua Zhengup2com . 1991: SEISMIC INTENSITY DISTRIBUTION OF SHALLOW EARTHQUAKES DUE TO RUPTURE VELOCITIES AND FAULTING MODES. Acta Seismologica Sinica, 13(2): 190-201.
Citation: Junji Koyamaup, Sihua Zhengup2com . 1991: SEISMIC INTENSITY DISTRIBUTION OF SHALLOW EARTHQUAKES DUE TO RUPTURE VELOCITIES AND FAULTING MODES. Acta Seismologica Sinica, 13(2): 190-201.

SEISMIC INTENSITY DISTRIBUTION OF SHALLOW EARTHQUAKES DUE TO RUPTURE VELOCITIES AND FAULTING MODES

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  • Published Date: September 01, 2011
  • Isoseismals not only represent seismic intensity distributions but also represent earthquake source size, faulting mode, and rupture velocity of fault propagation. Unilateral faulting forms egg-shaped isoseismals, while bilateral faulting forms elliptical ones. It is found that the ratio of major to minor axes of isoseismals is sensitive to rupture velocity. Rupture velocity, faulting mode, and fault trend have been determined from the seismic intensity maps of the 1964 Niigata and the 1983 Japan Sea earthquakes in Japan and the 1975 Haicheng and the 1976 Tangshan earthquakes in China by matching theoretical isoseismals. Rupture velocities thus estimated are mostly 70 to 90% of shear wave velocity They are a little higher than those obtained from long-period seismic waves. This difference would be considered as follows: Short-waves which determine the seismic intensity are strongly dependent on the rupture of small-scale, fault heterogeneities and on the jerky onsets and terminations of local rupture propagations. On the other hand, rupture velocity from long-waves represents an average rupture propagation along the whole fault length. Faulting mode and fault trend estimated from seismic intensity maps match with the earthquake faulting independently determined. This suggests that the present method could be applicable to some historical earthquakes with known seismic intensity distribution to obtain detailed information on the faulting process.
  • [1] 国家地晨局,1979.中国地震等烈度腺图集,地震出版社.北京,1——107,

    [2] 宇佐美翁夫,1987,新摄日本被害地震捻览.束京大学出版会.束京,1——434,

    [3] Campillo, M. and Bouchon, M., 1983. A theoretical study of the radiation from small strikeslip earthquakes at close distances. Buld. Seism. Soc. Amer,73, 83——96.

    [4] Cervenj., V., Popov, M. M.and Psencik, L, 1982. Computation of wave fields in iahomogeneous media——Gaussian beam approach. Geophyr. J. R. astr. Soc., 70, 109——128.

    [5] Trifunac, M, D. and Brady, A. G., 1975. On the correlation of seismic intensity scales with the peaks of recorded strong ground motion. Bull. Seism. Sac. Amer. 65, 139——162.

    [6] Koyama, J., 1985. Earthquake source time——function from coherent and incoherent rupture. Tectonophyrics, I18, 227——242.

    [7] 小山顺二,1987,短周期地震波。方位依存性.地震2,40,397——404,

    [8] Koyama, J. and Zheng, S. H., 1985. Excitation of short——period body——waves by great earthquakes. Phys. Earth Planet, later., 37, 108——123.

    [9] 小山顺二,1988,震度分布t断屠遐勤一加速度。方位依存性.地震,41,79——87,

    [10] 小山顺二、泉谷恭男,1988.最大加速度、1964年新渴地震乏1983年日本海中部地震.地震,41,1——8

    [11] Boore, D. M., 1983. Stochastic simulation of high——frequency ground motions based on seismological models of the radiated Koyama, J. and Shimada. N spectra. Bull. Seism. Sac, Amer., 73, 1865——1894.

    [12] Physical basis of earthquake magnitudes: An extreme value of seismic amplitudes from incoherent fracture of random fault patches. Phyr. Earth Planet.Inter., 40, 301——308.

    [13] Gutenberg, B. and Richter, C. F., 1942. Earthquake magnitude, intensity, energy, and acceleraLion. Bull. Seism. Soc. Amen, 32, 163——191.

    [14] Hirasawa, T 1965. Source mechanism of the Niigata earthquake of June 16, 1964, as derived from body waves. J. Phys. Earth., 13, 35——66.

    [15] 茅野一郎 1973.近地地震。震源决定地震。地震研究所研究.束京大学,12,83——98,

    [16] Kawasumi, H. and Sato, Y., 1968. Intensity of Niigata earthquake as determined from questionnaires. General Rep. Niigata Earthq. 1964. Tokyo Elec. Eng. Coll., 175——179.

    [17] 河角店X1973.地震炎害,共立出版,束京.1——276.

    [18] 梅世蓉X1982, 1976年唐山地展,地震出版社,北京.1——459,

    [19] Butler, R., Stewart, G. S, and Kanamori, H., 1979. The July 27, 1976 Tangshan, China earthquake——A complex sequence of intraplate events. Bull. Seism. Soc. Amer. 69, 207——220.

    [20] Chen, P. and Nuttli, O. W., 1984. Estimates of magnitudes and short——period :wave attenuation of Chinese earthquakes from modified ,Mercalli intensity data. Bull. Seism. Soc. Amen, 74,957——9ti8.

    [21] ;,ato, T Kosuga, M Tanaka, K, and Sato, H., 1986. Aftershock distribution the 1983 Nihonkai——chubu (Japan Sea) earthquake determined from relocated hypocenters. J. Phys. Earth.34, 203——223.

    [22] 太田裕、镜味洋史、俊藤典俊、同田成幸、掘田淳、1984, 4, 2, 2, 1983年日本海中部地震,北北海道地域市时村震度稠查.1983年日本海中部地震稠查研究 176——179,

    [23] Hashida, T, and Shimazaki, K., 1987. Predicting JMA seismic intensities based on 3——D attenuanon structure and suface amplifying factor: The Tohoku district, Japan. J. Phys. Earrh., 35,367——379.

    [24] Cipar, J., 1979. Source processes of the Haicheng, China earthquake from observations of Ptnd S waves. Bull. Seism. Soc. Amen, 69, 1903——1916.

    [25] 蒋凡,1978.海城地震,地震出版社,北京.1——90,

    [26] Zhou, H., Allen, C. R. anti Kanamori, H., 19836, Rupture complexity of the 1970 Tonghai and 1973 Luhuo earthquakes, China, from P——wave inversion, and relationship to surface faultingBull. Seism. Sot. Amen, 73, 1585——1597.

    [27] Kanamori, H. and Anderson, D. L., 1975. Theoretical basis of some empirical relations in seisinology. Bull. Seirm. Sot. Amen, 65, 1073——1095.

    [28] Brune, J. N. and King, D. Y., 1967. Excitation of mantle Rayleigh waves of period 100 seconds as a function of magnitude. Bull. Seism. Soc. Amen, 57, 1355——1385.

    [29] Koyama, J., Takemura, M. and Suzuki, Z., 1982. A scaling model for quantification of rthquakes in anal near Japan. Tectonophysicr, 84, 3——16.

    [30] Koyama, J., 1987. Focal mechanism of tsunami and tsunamigenic earthquakes. Yroc. Intern.Tsunami Symp. 1987, in press, lUGG.

    [31] Aki, K., 1966. Generation and propagation of G waves from the Niigata earthquake of June 16, 1964. Bull. Earzhg. Res. Inst., Tokyo Ilniv., 44, 23——88.

    [32] 7hou, H., Liu, H. L. and Kanamori, H., 1983. Source process of large earthquakes along the Xianshuihe fault in Southwestern China. Bull. Seism. Sac. timer 73, 537——551.

    [33] Zheng, S., 1983. Seismic moment tensor inversion of earthqaukes in and near the Tibetan plateau.博士学位论文,束北大学理学部,1——187,

    [1] 国家地晨局,1979.中国地震等烈度腺图集,地震出版社.北京,1——107,

    [2] 宇佐美翁夫,1987,新摄日本被害地震捻览.束京大学出版会.束京,1——434,

    [3] Campillo, M. and Bouchon, M., 1983. A theoretical study of the radiation from small strikeslip earthquakes at close distances. Buld. Seism. Soc. Amer,73, 83——96.

    [4] Cervenj., V., Popov, M. M.and Psencik, L, 1982. Computation of wave fields in iahomogeneous media——Gaussian beam approach. Geophyr. J. R. astr. Soc., 70, 109——128.

    [5] Trifunac, M, D. and Brady, A. G., 1975. On the correlation of seismic intensity scales with the peaks of recorded strong ground motion. Bull. Seism. Sac. Amer. 65, 139——162.

    [6] Koyama, J., 1985. Earthquake source time——function from coherent and incoherent rupture. Tectonophyrics, I18, 227——242.

    [7] 小山顺二,1987,短周期地震波。方位依存性.地震2,40,397——404,

    [8] Koyama, J. and Zheng, S. H., 1985. Excitation of short——period body——waves by great earthquakes. Phys. Earth Planet, later., 37, 108——123.

    [9] 小山顺二,1988,震度分布t断屠遐勤一加速度。方位依存性.地震,41,79——87,

    [10] 小山顺二、泉谷恭男,1988.最大加速度、1964年新渴地震乏1983年日本海中部地震.地震,41,1——8

    [11] Boore, D. M., 1983. Stochastic simulation of high——frequency ground motions based on seismological models of the radiated Koyama, J. and Shimada. N spectra. Bull. Seism. Sac, Amer., 73, 1865——1894.

    [12] Physical basis of earthquake magnitudes: An extreme value of seismic amplitudes from incoherent fracture of random fault patches. Phyr. Earth Planet.Inter., 40, 301——308.

    [13] Gutenberg, B. and Richter, C. F., 1942. Earthquake magnitude, intensity, energy, and acceleraLion. Bull. Seism. Soc. Amen, 32, 163——191.

    [14] Hirasawa, T 1965. Source mechanism of the Niigata earthquake of June 16, 1964, as derived from body waves. J. Phys. Earth., 13, 35——66.

    [15] 茅野一郎 1973.近地地震。震源决定地震。地震研究所研究.束京大学,12,83——98,

    [16] Kawasumi, H. and Sato, Y., 1968. Intensity of Niigata earthquake as determined from questionnaires. General Rep. Niigata Earthq. 1964. Tokyo Elec. Eng. Coll., 175——179.

    [17] 河角店X1973.地震炎害,共立出版,束京.1——276.

    [18] 梅世蓉X1982, 1976年唐山地展,地震出版社,北京.1——459,

    [19] Butler, R., Stewart, G. S, and Kanamori, H., 1979. The July 27, 1976 Tangshan, China earthquake——A complex sequence of intraplate events. Bull. Seism. Soc. Amer. 69, 207——220.

    [20] Chen, P. and Nuttli, O. W., 1984. Estimates of magnitudes and short——period :wave attenuation of Chinese earthquakes from modified ,Mercalli intensity data. Bull. Seism. Soc. Amen, 74,957——9ti8.

    [21] ;,ato, T Kosuga, M Tanaka, K, and Sato, H., 1986. Aftershock distribution the 1983 Nihonkai——chubu (Japan Sea) earthquake determined from relocated hypocenters. J. Phys. Earth.34, 203——223.

    [22] 太田裕、镜味洋史、俊藤典俊、同田成幸、掘田淳、1984, 4, 2, 2, 1983年日本海中部地震,北北海道地域市时村震度稠查.1983年日本海中部地震稠查研究 176——179,

    [23] Hashida, T, and Shimazaki, K., 1987. Predicting JMA seismic intensities based on 3——D attenuanon structure and suface amplifying factor: The Tohoku district, Japan. J. Phys. Earrh., 35,367——379.

    [24] Cipar, J., 1979. Source processes of the Haicheng, China earthquake from observations of Ptnd S waves. Bull. Seism. Soc. Amen, 69, 1903——1916.

    [25] 蒋凡,1978.海城地震,地震出版社,北京.1——90,

    [26] Zhou, H., Allen, C. R. anti Kanamori, H., 19836, Rupture complexity of the 1970 Tonghai and 1973 Luhuo earthquakes, China, from P——wave inversion, and relationship to surface faultingBull. Seism. Sot. Amen, 73, 1585——1597.

    [27] Kanamori, H. and Anderson, D. L., 1975. Theoretical basis of some empirical relations in seisinology. Bull. Seirm. Sot. Amen, 65, 1073——1095.

    [28] Brune, J. N. and King, D. Y., 1967. Excitation of mantle Rayleigh waves of period 100 seconds as a function of magnitude. Bull. Seism. Soc. Amen, 57, 1355——1385.

    [29] Koyama, J., Takemura, M. and Suzuki, Z., 1982. A scaling model for quantification of rthquakes in anal near Japan. Tectonophysicr, 84, 3——16.

    [30] Koyama, J., 1987. Focal mechanism of tsunami and tsunamigenic earthquakes. Yroc. Intern.Tsunami Symp. 1987, in press, lUGG.

    [31] Aki, K., 1966. Generation and propagation of G waves from the Niigata earthquake of June 16, 1964. Bull. Earzhg. Res. Inst., Tokyo Ilniv., 44, 23——88.

    [32] 7hou, H., Liu, H. L. and Kanamori, H., 1983. Source process of large earthquakes along the Xianshuihe fault in Southwestern China. Bull. Seism. Sac. timer 73, 537——551.

    [33] Zheng, S., 1983. Seismic moment tensor inversion of earthqaukes in and near the Tibetan plateau.博士学位论文,束北大学理学部,1——187,
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