Lu ZHENYEup, N. KATOup2, K. YAMAMOTOup2, T. HIRASAWAup2loans.com sh advance samelucashadv. 1990: RESEARCH ON THE EFFECTS OF STOP OR DELAY, WHICH LATERAL FAULTS INFLUENCE UPON MAIN FAULT IN THE UNSTABLE EXTENDING PROCESS OF STICK-SLIP. Acta Seismologica Sinica, 12(4): 415-427.
Citation: Lu ZHENYEup, N. KATOup2, K. YAMAMOTOup2, T. HIRASAWAup2loans.com sh advance samelucashadv. 1990: RESEARCH ON THE EFFECTS OF STOP OR DELAY, WHICH LATERAL FAULTS INFLUENCE UPON MAIN FAULT IN THE UNSTABLE EXTENDING PROCESS OF STICK-SLIP. Acta Seismologica Sinica, 12(4): 415-427.

RESEARCH ON THE EFFECTS OF STOP OR DELAY, WHICH LATERAL FAULTS INFLUENCE UPON MAIN FAULT IN THE UNSTABLE EXTENDING PROCESS OF STICK-SLIP

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  • Published Date: September 01, 2011
  • The laboratory results of stick-slip of a fault with weak barrier were presented in this paper. The weak barriers were simulated by two isolated saw kerfs which meet at right angles with the sawcut representing the fault. The results show that the weak barriers obviously can stop (or called stop-fracture) or delay the unstable stick-slip extending process. The a stop-fracture effects depend on the depth of the saw kerf and average normal stress n which exert on the saw cut representing the main fault. The effects of stop and delay increase with l,and increase with x but not monotonously. The average delay time tdn curve is like a V shape. The spatial distribution of apparent fracture energy,G,ploted against distance along the main fault shows that there is no high G in the front of the stop points in the unstable extending process,which indicates that the weak barrier is another stopbreak mechanism. It may stop or delay the unstable extending process of stick-slip by absorption of strain energy. The results show some complex time and space features of stick-slip events under conditions represented in this sample,which can help us undersdand the relation between strong earthquake sequences. Further research on the stop or delay effects of the extending process can help us perfect the stick-slip mechanism in seismology.
  • [1] Brace, W. F. and Byerlee, J. D., 1966. Stick——slip as a mechanism for earthquakes. Science, 153, 990——992.

    [2] Byerlee, J. D. and Brace, W. F., 1968. Stick slip, stable sliding and earthquake——effect of rock type, Pressure, strain rate and stiffness. J. Geophy. Res., 73, 6031——6037.

    [3] Wong, T. F., 1986. On the normal stress dependence of the shear fracture energy. Maurice Ewing Ser.,6, 1——12.

    [4] Brace,. W. F., 1972. Laboratory studies of stick——slip and their application to earthquakes. Teczonaphysics,14, 189——200.

    [5] Stesky,只·M., Brace, W. F., Riley, D. K. and Robin, P. Y. F., 1974. Friction in faulted rock at high temperature and pressure. Tectarzophysics, 23, 177——203.

    [6] Johnson, T. L., Wu, F. T. and Scholz, C. H., 1973. Source parameters for stick——slip and for earthquakes.Science, 179, 278——280.

    [7] Johnson, T. L. and Scholz, C. 1i., 1976. Dynamic properties of stick——slip friction of rock. J. Geophys. Res.,81,881——888.

    [8] lda, Y., 1972. Cohesive force across the tip of a longitudinal——shear crack and Griffith's specific surface energy. J. Geophys. Res., 77. 3796——3805.

    [9] Ida, Y., 1973. The maximum acceleration of seismic ground motion. Bull. Seism. Soc. Am., 63, 959——968.

    [10] Okubo, P. G. and Dieterich, J. H., 1981. Fracture energy of stick——slip events in a large scale biaxial experiment. Geophys. Res. Lett., 8, 887——890.

    [11] Okubo, P. G, and Dieterich, J. H., 1984. Effects of physical fault properties on frictional instabilities produced on simulated faults. J, Geaphys. Res., 89, 5817——5826.

    [12] Andrews, D. J., 1976. Rupture velocity of plane strain shear crack. J. Geophyr. Res., 81, 5679——5687.

    [13] Ohnaka, M., Kuwahara, Y., Yamamoto, K. and Hirasawa, T., 1986.Dynamic breakdown processes and the generating mechanism for high——frequency radiation during stick——slip instabilities. Manrict Ewing Ser., 6,13——24.

    [14] Kanamori, H. and Stewart, G. S., 1978. Seismological aspects of the Guatemala earthquake of February 4,1976. J. Geophys. Res. 83, 3427——3434

    [15] Aki, K., 1979, Characterization of barrieers on an earthquake fault. J. Geophys. Res., 84, 6140——6148.

    [16] Kuwahara, Y., Ohnaka, M., Yamamoto, K., Kato, N. and Hirasawa, T., 1986. Rupture initiation process in stick——slip instability. Abstract, Fall Annual Meeting of Seism. Soc. Japan, 2, 233.

    [17] Kuwahara, Y., 1985. An experimental study on dynamic sliding process during stick——slip and its implicanon to earthquake faulting. Ph. D. Thesis, Tohoku University

    [18] Kato N., 1987. Effects of the nonuniformities of sliding surfaces on the dynamic bahavior of shear instability, Ph. M. Thesis, Tohaku University.

    [1] Brace, W. F. and Byerlee, J. D., 1966. Stick——slip as a mechanism for earthquakes. Science, 153, 990——992.

    [2] Byerlee, J. D. and Brace, W. F., 1968. Stick slip, stable sliding and earthquake——effect of rock type, Pressure, strain rate and stiffness. J. Geophy. Res., 73, 6031——6037.

    [3] Wong, T. F., 1986. On the normal stress dependence of the shear fracture energy. Maurice Ewing Ser.,6, 1——12.

    [4] Brace,. W. F., 1972. Laboratory studies of stick——slip and their application to earthquakes. Teczonaphysics,14, 189——200.

    [5] Stesky,只·M., Brace, W. F., Riley, D. K. and Robin, P. Y. F., 1974. Friction in faulted rock at high temperature and pressure. Tectarzophysics, 23, 177——203.

    [6] Johnson, T. L., Wu, F. T. and Scholz, C. H., 1973. Source parameters for stick——slip and for earthquakes.Science, 179, 278——280.

    [7] Johnson, T. L. and Scholz, C. 1i., 1976. Dynamic properties of stick——slip friction of rock. J. Geophys. Res.,81,881——888.

    [8] lda, Y., 1972. Cohesive force across the tip of a longitudinal——shear crack and Griffith's specific surface energy. J. Geophys. Res., 77. 3796——3805.

    [9] Ida, Y., 1973. The maximum acceleration of seismic ground motion. Bull. Seism. Soc. Am., 63, 959——968.

    [10] Okubo, P. G. and Dieterich, J. H., 1981. Fracture energy of stick——slip events in a large scale biaxial experiment. Geophys. Res. Lett., 8, 887——890.

    [11] Okubo, P. G, and Dieterich, J. H., 1984. Effects of physical fault properties on frictional instabilities produced on simulated faults. J, Geaphys. Res., 89, 5817——5826.

    [12] Andrews, D. J., 1976. Rupture velocity of plane strain shear crack. J. Geophyr. Res., 81, 5679——5687.

    [13] Ohnaka, M., Kuwahara, Y., Yamamoto, K. and Hirasawa, T., 1986.Dynamic breakdown processes and the generating mechanism for high——frequency radiation during stick——slip instabilities. Manrict Ewing Ser., 6,13——24.

    [14] Kanamori, H. and Stewart, G. S., 1978. Seismological aspects of the Guatemala earthquake of February 4,1976. J. Geophys. Res. 83, 3427——3434

    [15] Aki, K., 1979, Characterization of barrieers on an earthquake fault. J. Geophys. Res., 84, 6140——6148.

    [16] Kuwahara, Y., Ohnaka, M., Yamamoto, K., Kato, N. and Hirasawa, T., 1986. Rupture initiation process in stick——slip instability. Abstract, Fall Annual Meeting of Seism. Soc. Japan, 2, 233.

    [17] Kuwahara, Y., 1985. An experimental study on dynamic sliding process during stick——slip and its implicanon to earthquake faulting. Ph. D. Thesis, Tohoku University

    [18] Kato N., 1987. Effects of the nonuniformities of sliding surfaces on the dynamic bahavior of shear instability, Ph. M. Thesis, Tohaku University.

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