Slip Movement Simulations of Major Faults Under Very Low Strength

  • Park, Moo-Choon (Department of Environmental Science, Korea Military Academy) ;
  • Han, Uk (Department of Environmental Science, Korea Military Academy)
  • Published : 2000.02.01


Through modeling fault network using thin plate finite element technique in the San Andreas Fault system with slip rate over 1mm/year, as well as elevation, heat flow, earthquakes, geodetic data and crustal thickness, we compare the results with velocity boundary conditions of plate based on the NUVEL-1 plate model and the approximation of deformation in the Great Basin region. The frictional and dislocation creep constants of the crust are calculated to reproduce the observed variations in the maximum depth of seismicity which corresponds to the temperature ranging from $350^{\circ}C$ to $410^{\circ}C$. The rheologic constants are defined by the coefficient of friction on faults, and the apparent activation energy for creep in the lower crust. Two parameters above represent systematic variations in three experiments. The pattern of model indicates that the friction coefficient of major faults is 0.17~0.25. we test whether the weakness of faults is uniform or proportional to net slip. The geologic data show a good agreement when fault weakness is a trend of an additional 30% slip dependent weakening of the San Andreas. The results of study suggest that all weakening is slip dependent. The best models can be explained by the available data with RMS mismatch of as little as 3mm/year, so their predictions can be closely related with seismic hazard estimation, at least along faults where no data are available.



  1. The Northridge Hills and associated faults: A zone of high seismic probability? Barnhart, J.T.
  2. Geophys, J.R. Astron. Soc. v.55 Stress and temperature in subduction shear zones: Tonga and Mariana Bird, P.
  3. J. Geophys Res. v.83 Initiation of intracontinental subduction in the Himalaya Bird, P.
  4. Tectonophysics v.107 Hydration of phase diagrams and friction of montmorillonite under laboratory and geologic conditions, with implications for shale compaction, slope stability, and strength of fault gouge Bird, P.
  5. J. Geophys. Res. v.94 New finite element techniques for modeling deformation histories of continents with stratifies temperature dependent rheology Bird, P.
  6. J. Geophys. Res v.89 Fault Friction, regional stress, and crust mantle coupling in southern California from finite element models Bird, P;Baumgardner, J.
  7. Geol. Soc. Am. Bull. v.95 Kinematics of present crust and mantle flow in southern California Bird, P.;Rosenstock, R.
  8. J. Geophys. Res. v.85 Limits on lithospheric strength imposed by laboratory experiments Brace, W.F.;Kohlstedt, D.L.
  9. Geophys Res. Lett. v.18 Slip rate, earthquake recurrence, and seismogenic potential of the Rodgers, Creek fault zone, northern California: Initial results Budding, K.E.;Schwartz, D.P.;Oppenheimer, D.H.
  10. Eos v.71 Friction, overpressure, and fault normal compression Byerlee, J.
  11. Crustal Dynamic Project, data analysis-1990, VLBI geodetic results, 1979-1989, NASA Technical Memorandum, TM-100765, Goddard Space Flight Center, Greenbelt, Maryland Carprette, D.S.;Ma, C.;Ryan, J.W.
  12. Tectonics of the juncture between the san Andreas fault system and the Salton Trough Crowell, J.C.;Sylvester, A.G.
  13. Publ. Geol. Sci. v.11 The Santa Clara Formation and possible post-Pliocene slip on the San Andreas fault in Central California Cummings, J.C.
  14. Geol. Soc. Am. Bull. v.84 Garlock fault of southern California : An intracontinental transform structure Davis, G.A.;Burchfiel, B.C.
  15. Geophys. J. Int. v.101 Current plate motions DeMets, C.;Gordon, R.G.;Argus, D.F.;Stein, S.
  16. J. Geophys. Res. v.94 Heat flow and thermotectonic problems of the central Ventura Basin, southern California De Rito, R.F.;Lachenbruch, A.H.;Moses, T.H.;Jr.;Munroe, R.J.
  17. Am. Assoc. Pet. Geol Bull. v.56 Test of new global tectonics; Discussion Dickinson, W.R.
  18. Geology v.11 Displacements on late Cenozoic strike slip faults of the central Mojave desert, California Dokka, R.K.
  19. Geol. Soc. Am. Abstr. Prog v.22 The eastern California Shear Zone and its role in the tectonic evolution of the Pacific-North American Transform boundary Dokka, R.K.;Travis, C.J.
  20. Geol. Soc. Am. Abstr. Prog. v.9 The polka-dot granite and the rate of displacement on the San Andreas fault in southern California Ehlert, K.W.;Ehlig, P.L.
  21. Calif. Div. Mines Geol. Spec. Rep. v.137 Apparent offsets of on-land geologic features across the San Gregorio-Hosgri Fault trend Grham, S.A.;Dickins, W.R.
  22. Geol. Soc. Am. Abstr. Prog. v.9 Hosgrio fault zone: structure, amount of displacement, and relationship to structures of the western Transverse Ranges Hamilton, D.H.;Willingham, C.R.
  23. J. Korean Inst. Mining Geol. v.24 An Analytical Model Study on the Thermal Stress around the Uplifted Province within the Continental Lithosphere Han, U.
  24. J. Korean Earth Sci. Soc. v.18 Thermal Stress Distribution within the lithosphere of East Sea of Korea Han, U.;Keehm, Y.
  25. Geolo. Soc. Am. Bull. v.101 Holocene and late Pleistocene slip rates onthe San Andreas fault in Yucaipa, California Harden, J.W.;Matti, J.C.
  26. Heat flow near major strike slip faults in central and southern California Henyey, T.L.
  27. J. Geophys. res. v.76 Heart flow along major strike slip faults in California Henyey, T.L.;Wasserburg, G.T.
  28. J. Energy Resour. Technol. v.117 The San Andreas fault zone drilling project Hickman, S.H.;Younker, L.W.;Zoback, M.D.;Cooper, G.A.
  29. Geol. Soc. Am. Bull. v.70 Role of fluid pressure in the mechanics of overthrust faulting Hubbert, M.K.;Rubey, W.W.
  30. Calif. Div. Mines Geol. Bull. v.200 Geology of the San Diego metropolitan area, Califprnia Kennedy, M.P.
  31. Rev. Geophys. Space Phys. v.21 Rheology of the lithosphere Kirby, S.H.
  32. J. Geophys . Res. v.85 Heat flow and energetics of the San Andreas fault zone Lachenbruch, A.H.;Sass, J.H.
  33. Structural evolution of the northern margin of the Los Angeles basin Lamar, D.L.
  34. J. Geophys. Res. v.96 The velocity field along the San Andreas fault in central and southern California Lisowski, M.;Savage, J.C.;Prescott, W.H.
  35. Bull. Seismol. Soc. Am. v.61 The displacement fields of inclined faults Mansinha, L.;Smylie, D.E.
  36. Geol. Soc. Am. Mem. v.172 Regional crustal structure and tectonics of the Pacific coastal states; California, Oregon, and Washington, Geophysical Framework of the Continental United States Mooney, W.D.;Weaver, C.S.;L.C. Pakiser(ed.);W.D. Mooney(ed.)
  37. Geol. Soc. Am. Abstr. Prog. v.18 Constraints on strike slip displacement on the San Andreas and San Jacinto faults Morton, D.M.;Matti, J.C.;Miller, F.K.;Reppening, C.A.
  38. Geology v.15 State of stress near the San Andreas fault: Implications for wrench tectonics Mount, V.S.;Suppe, J.
  39. Geology v.191 Evidence of latest Pleistocene to Holocene movement on the Santa Cruz Island fault, California Pinter, N.;Sorlien, C.
  40. Earthquake geology of the northern San Andreas fault near Point Arena, California Prentice, C.S.
  41. Geol. Soc. Am. Abstr. Prog. v.18 Distribution of slip between the San Andreas and San Jacinto faults near San Bernardino, California Prentice, C.S.;Weldon, R.J.;Sieh, K.E.
  42. Eos v.71 Fault stress states, pore pressure distributions, and weakness of the San Andreas fault Rice, J.R.
  43. J. Geophys. Res. v.95 Earthquake depths and the relation to strain accumulation and stress near strike slip faults in southern California Sanders, C.O.
  44. EOS v.67 Displacement of a circa 6M a tuff across the San Andreas fault system, northern California Sarna-Wojcicki, A.M.
  45. J. Geophys. Res. v.102 Thermal regime of the San Andreas fault near Parkfield, California Sass, J.H.
  46. Geophys. Res. Lett. v.17 An apparent shear zone trending North-northwest across the Mojave Desert into Owens Valley, eastern California Savage, J.C.;Lisowski, M.;Prescott, W.H.
  47. Annual Reviews of Earth and Planetary Science v.25 GPS applications for geodynamics and earthquake studies Segall, P.;Davis, J.L.
  48. Kinematics of the Pacific-North America Plate Boundary Zone Segall, P.;Freymueller, J.
  49. Geol. Soc. Am. Bull. v.78 San Jacinto fault zone in the peninsular Ranges of Southern California Sharp, R.V.
  50. J. Geophys. Res. v.85 A steady state model for the distribution of stress and temperature on the San Andreas Fault Turcotte, D.L.
  51. U.S. Geol. Surv. Pamphlet The Loma Prieta earthquake of October 17, 1989 Ward, P.L.;Page, R.A.
  52. Tectonics v.5 A kinematic model of southern California Weldon, R.;Humphreys, E.
  53. Geol. Soc. Am. Bull. v.103 An offset Holocene stream channel and the rate of slip along the northern reach of the San Jacinto fault zone, San Bernardino Valley, California Wesnousky, S.G.;Prentice, C.S.;Sieh, K.E.
  54. EOS Trans. AGU. 76, Fall Temperature and the seismic/aseismic transition Williams, C.F.
  55. Am. Assoc. Pet. Geol. Bull. v.57 Newport-Inglewood fault zone, LosAngeles basin, California Yeats, R.S.
  56. U.S. Geol. Surv. Open-File Rep., 90-680 Convergence rates across w. Transverse Ranges Yeats, R.S.;Huftile, G.J.
  57. J. Geophys. Res. v.95 Right-lateral displacements and the Holocene slip rate associated with prehistoric earthquakes along the southern Panamint Valley fault zone: Implications for southern Basin and Range tectonics and coastal California deformation Zhang, P.;Ellis, M.;Slemmons, D.B.;Mao, F.
  58. Science 238 New evidence on the state of stress of the San Andreas fault system Zoback, M.D.
  59. Geol. Soc. Am. Mem. v.172 Tectonic stress field of the continental United States, Geophysical Framework of the Continental United States Zoback, M.L.;Zoback, M.D.