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Volumn 105, Issue B3, 2000, Pages 6069-6088

Influence of friction and fault geometry on earthquake rupture

Author keywords

[No Author keywords available]

Indexed keywords

EARTHQUAKE; FAULT GEOMETRY; FOCAL MECHANISM; FRICTION; RUPTURE;

EID: 0034629349     PISSN: 21699313     EISSN: 21699356     Source Type: Journal    
DOI: 10.1029/1999jb900350     Document Type: Article
Times cited : (73)

References (60)
  • 2
    • 0016973599 scopus 로고
    • Rupture propagation with finite stress in antiplane strain
    • Andrews, D. J., Rupture propagation with finite stress in antiplane strain, J. Geophys. Res., 81, 3575-3582, 1976.
    • (1976) J. Geophys. Res. , vol.81 , pp. 3575-3582
    • Andrews, D.J.1
  • 3
    • 0030423374 scopus 로고    scopus 로고
    • Self-healing slip pulses in dynamic ruptures models due to velocity-dependent strength
    • Beeler, N. M., and T. E. Tullis, Self-healing slip pulses in dynamic ruptures models due to velocity-dependent strength, Bull. Seismol. Soc. Am., 86, 1130-1148, 1996.
    • (1996) Bull. Seismol. Soc. Am. , vol.86 , pp. 1130-1148
    • Beeler, N.M.1    Tullis, T.E.2
  • 4
    • 0008421833 scopus 로고
    • Earthquake failure sequences along a cellular fault zone in a three-dimensional elastic solid containing asperity and nonasperity regions
    • Ben-Zion, Y., and J. Rice, Earthquake failure sequences along a cellular fault zone in a three-dimensional elastic solid containing asperity and nonasperity regions, J. Geophys. Res., 98, 14,109-14,131, 1993.
    • (1993) J. Geophys. Res. , vol.98
    • Ben-Zion, Y.1    Rice, J.2
  • 5
    • 0031414545 scopus 로고    scopus 로고
    • Dynamic simulations of slip in a smooth fault in an elastic solid
    • Ben-Zion, Y., and J. R. Rice, Dynamic simulations of slip in a smooth fault in an elastic solid, J. Geophys. Res., 102, 17,771-17,784, 1997.
    • (1997) J. Geophys. Res. , vol.102
    • Ben-Zion, Y.1    Rice, J.R.2
  • 6
    • 0030428793 scopus 로고    scopus 로고
    • Short slip duration in dynamic rupture in the presence of heterogeneous fault properties
    • Beroza, G., and T. Mikumo, Short slip duration in dynamic rupture in the presence of heterogeneous fault properties J. Geophys. Res., 101, 22,449-22,460, 1996.
    • (1996) J. Geophys. Res. , vol.101
    • Beroza, G.1    Mikumo, T.2
  • 7
    • 0014852450 scopus 로고
    • Tectonic stress and the spectra of seismic shear waves from earthquakes
    • Brune, J. N., Tectonic stress and the spectra of seismic shear waves from earthquakes J. Geophys. Res., 75, 4997-5009, 1970.
    • (1970) J. Geophys. Res. , vol.75 , pp. 4997-5009
    • Brune, J.N.1
  • 9
    • 0019653677 scopus 로고
    • Slipping on a frictional fault plane in three dimensions: A numerical simulation of a scalar analogue
    • Burridge, R., and R. Moon, Slipping on a frictional fault plane in three dimensions: A numerical simulation of a scalar analogue, Geophys. J. R. Astron. Soc., 67(2), 325-342, 1981.
    • (1981) Geophys. J. R. Astron. Soc. , vol.67 , Issue.2 , pp. 325-342
    • Burridge, R.1    Moon, R.2
  • 10
    • 0039065168 scopus 로고    scopus 로고
    • Constitutive relation for the friction between lubricated surfaces
    • Carlson, J. M., and A. A. Batista, Constitutive relation for the friction between lubricated surfaces, Phys. Rev. E, 53, 4153-4165, 1996.
    • (1996) Phys. Rev. E , vol.53 , pp. 4153-4165
    • Carlson, J.M.1    Batista, A.A.2
  • 11
    • 35949011191 scopus 로고
    • Properties of earthquakes generated by fault dynamics
    • Carlson, J. M., and J. S. Langer, Properties of earthquakes generated by fault dynamics, Phys. Rev. Lett., 62, 2632-2635, 1989a.
    • (1989) Phys. Rev. Lett. , vol.62 , pp. 2632-2635
    • Carlson, J.M.1    Langer, J.S.2
  • 12
    • 3543014842 scopus 로고
    • Mechanical model of an earthquake fault
    • Carlson, J. M., and J. S. Langer, Mechanical model of an earthquake fault, Phys. Rev. A, 40, 6470-6484, 1989b.
    • (1989) Phys. Rev. A , vol.40 , pp. 6470-6484
    • Carlson, J.M.1    Langer, J.S.2
  • 13
    • 0000317206 scopus 로고
    • Intrinsic properties of a Burridge-Knopoff model of an earthquake fault
    • Carlson, J. M., J. S. Langer, B. E. Shaw, and C. Tang, Intrinsic properties of a Burridge-Knopoff model of an earthquake fault, Phys. Rev. A, 44, 884-897, 1991.
    • (1991) Phys. Rev. A , vol.44 , pp. 884-897
    • Carlson, J.M.1    Langer, J.S.2    Shaw, B.E.3    Tang, C.4
  • 15
    • 84905420281 scopus 로고    scopus 로고
    • Prediction studies of earthquake fault models and applications to seismic catalogs
    • edited by J. B. Rundle, D. L. Turcotte, and M. W. Klein, Addison-Wesley-Longman, Reading, Mass.
    • Carlson, J. M., S. P. Pepke, and V. G. Kossobokov, Prediction studies of earthquake fault models and applications to seismic catalogs, edited by J. B. Rundle, D. L. Turcotte, and M. W. Klein, inReduction and Predictability of Natural Disasters, pp. 273-291, Addison-Wesley-Longman, Reading, Mass., 1996.
    • (1996) Reduction and Predictability of Natural Disasters , pp. 273-291
    • Carlson, J.M.1    Pepke, S.P.2    Kossobokov, V.G.3
  • 16
    • 0001349398 scopus 로고
    • Self-organized criticality in a crack-propagation model of earthquakes
    • Chen, K., P. Bak, and S. P. Obukhov, Self-organized criticality in a crack-propagation model of earthquakes, Phys. Rev. A, 43, 625-630, 1991.
    • (1991) Phys. Rev. A , vol.43 , pp. 625-630
    • Chen, K.1    Bak, P.2    Obukhov, S.P.3
  • 17
    • 0026484873 scopus 로고
    • Variaton of the Gutenberg-Richter b values and nontrivial temporal correlations in a spring-block model for earthquakes
    • Christensen, K., and Z. Olami, Variaton of the Gutenberg-Richter b values and nontrivial temporal correlations in a spring-block model for earthquakes, J. Geophys. Res., 97, 8729-8735, 1992.
    • (1992) J. Geophys. Res. , vol.97 , pp. 8729-8735
    • Christensen, K.1    Olami, Z.2
  • 18
    • 0028565478 scopus 로고
    • Dynamic faulting under rate-dependent friction
    • Cochard, A., and R. Madariaga, Dynamic faulting under rate-dependent friction, Pure Appl. Geophys., 142, 419-445, 1994.
    • (1994) Pure Appl. Geophys. , vol.142 , pp. 419-445
    • Cochard, A.1    Madariaga, R.2
  • 19
    • 0030442027 scopus 로고    scopus 로고
    • Complexity of seismicity due to highly rate-dependent friction
    • Cochard, A., and R. Madariaga, Complexity of seismicity due to highly rate-dependent friction, J. Geophys. Res., 101, 25,321-25,336, 1996.
    • (1996) J. Geophys. Res. , vol.101
    • Cochard, A.1    Madariaga, R.2
  • 20
    • 0005219443 scopus 로고    scopus 로고
    • Mode of rupture, self-healing pulse versus enlarging shear crack, for a velocity weakening fault in a 3d solid
    • Cochard, A., and J. Rice, Mode of rupture, self-healing pulse versus enlarging shear crack, for a velocity weakening fault in a 3d solid (abstract), Eos Trans. AGU, 78(46), Fall Meet. Suppl., F472, 1997.
    • (1997) Eos Trans. AGU , vol.78 , Issue.46 FALL MEET. SUPPL.
    • Cochard, A.1    Rice, J.2
  • 21
    • 0000252314 scopus 로고
    • On the ratio of P-wave to S-wave corner frequencies for shallow earthquake sources
    • Dahlen, F. A., On the ratio of P-wave to S-wave corner frequencies for shallow earthquake sources, Bull. Seismol. Soc. Am., 64, 1159-1180, 1974.
    • (1974) Bull. Seismol. Soc. Am. , vol.64 , pp. 1159-1180
    • Dahlen, F.A.1
  • 22
    • 0001083050 scopus 로고
    • Three-dimensional finite difference simulation of fault dynamics: Rectangular faults with fixed rupture velocity
    • Day, S. M., Three-dimensional finite difference simulation of fault dynamics: Rectangular faults with fixed rupture velocity, Bull. Seismol. Soc. Am., 72, 705-727, 1982.
    • (1982) Bull. Seismol. Soc. Am. , vol.72 , pp. 705-727
    • Day, S.M.1
  • 23
    • 0031844237 scopus 로고    scopus 로고
    • Dynamic stress changes during earthquake rupture
    • Day, S. M., G. Yu, and D. J. Wald, Dynamic stress changes during earthquake rupture Bull. Seismol. Soc. Am., 88, 512-522, 1998.
    • (1998) Bull. Seismol. Soc. Am. , vol.88 , pp. 512-522
    • Day, S.M.1    Yu, G.2    Wald, D.J.3
  • 24
    • 0037509280 scopus 로고
    • Time-dependent friction and the mechanics of stick-slip
    • Dieterich, J. H., Time-dependent friction and the mechanics of stick-slip, Pure Appl. Geophys., 116, 790-806, 1978.
    • (1978) Pure Appl. Geophys. , vol.116 , pp. 790-806
    • Dieterich, J.H.1
  • 25
    • 77950827967 scopus 로고
    • Modeling of rock friction, 2, Simulation of preseismic slip
    • Dieterich, J. H., Modeling of rock friction, 2, Simulation of preseismic slip, J. Geophys. Res., 84, 2169-2175, 1979.
    • (1979) J. Geophys. Res. , vol.84 , pp. 2169-2175
    • Dieterich, J.H.1
  • 26
    • 0028259570 scopus 로고
    • A constitutive law for rate of earthquake production and its application to earthquake clustering
    • Dieterich, J. H., A constitutive law for rate of earthquake production and its application to earthquake clustering, J. Geophys. Res., 99, 2601-2618, 1994.
    • (1994) J. Geophys. Res. , vol.99 , pp. 2601-2618
    • Dieterich, J.H.1
  • 27
    • 34249772601 scopus 로고
    • Direct observation of frictional contacts: New insights for state-dependent properties
    • Dieterich, J. H., and B. Kilgore, Direct observation of frictional contacts: new insights for state-dependent properties, Pure Appl. Geophys., 143, 283-302, 1994.
    • (1994) Pure Appl. Geophys. , vol.143 , pp. 283-302
    • Dieterich, J.H.1    Kilgore, B.2
  • 28
    • 0031782339 scopus 로고    scopus 로고
    • The effect of absolute stress on dynamic rupture
    • Guatteri, M., and P. Spudich, The effect of absolute stress on dynamic rupture, Bull. Seismol. Soc. Am., 88, 777-789, 1998.
    • (1998) Bull. Seismol. Soc. Am. , vol.88 , pp. 777-789
    • Guatteri, M.1    Spudich, P.2
  • 29
    • 0027498628 scopus 로고    scopus 로고
    • Dynamics of fault interaction: Parallel strike-slip faults
    • Harris, R. A., and S. M. Day, Dynamics of fault interaction: Parallel strike-slip faults, J. Geophys. Res., 98
    • J. Geophys. Res. , vol.98
    • Harris, R.A.1    Day, S.M.2
  • 30
    • 0025595759 scopus 로고
    • Evidence for and implications of self-healing pulses of slip in earthquake rupture
    • Heaton, T. H., Evidence for and implications of self-healing pulses of slip in earthquake rupture, Phys. Earth Planet. Inter., 64, 1-20, 1990.
    • (1990) Phys. Earth Planet. Inter. , vol.64 , pp. 1-20
    • Heaton, T.H.1
  • 31
    • 0031433785 scopus 로고    scopus 로고
    • Determination of constitutive relations of fault slip based on seismic wave analysis
    • Ide, S., and M. Takeo, Determination of constitutive relations of fault slip based on seismic wave analysis, J. Geophys. Res., 102, 27379-27391, 1997.
    • (1997) J. Geophys. Res. , vol.102 , pp. 27379-27391
    • Ide, S.1    Takeo, M.2
  • 32
    • 0000400971 scopus 로고
    • Dynamical model of an earthquake fault with localisation
    • Knopoff, L., J.A. Landoni, and M. Abinante, Dynamical model of an earthquake fault with localisation, Phys. Rev. A, 46, 7445-7449, 1992.
    • (1992) Phys. Rev. A , vol.46 , pp. 7445-7449
    • Knopoff, L.1    Landoni, J.A.2    Abinante, M.3
  • 33
    • 0000828625 scopus 로고
    • Self-similar problems of propagation of shear cracks
    • Kostrov, B. V., Self-similar problems of propagation of shear cracks, J. Appl. Math. Mech., 28, 1077-1087, 1964.
    • (1964) J. Appl. Math. Mech. , vol.28 , pp. 1077-1087
    • Kostrov, B.V.1
  • 34
    • 0019143340 scopus 로고
    • Frictional heating, fluid pressure, and the resistance to fault motion
    • Lachenbruch, A. H., Frictional heating, fluid pressure, and the resistance to fault motion, J. Geophys. Res., 85, 6097-6112, 1980.
    • (1980) J. Geophys. Res. , vol.85 , pp. 6097-6112
    • Lachenbruch, A.H.1
  • 36
    • 0008970050 scopus 로고    scopus 로고
    • Self-organized criticality in stick-slip models with periodic boundaries
    • Leung, K., J. Anderson, and D. Sornette, Self-organized criticality in stick-slip models with periodic boundaries, Phys. Rev. Lett., 80, 1916-1919, 1998.
    • (1998) Phys. Rev. Lett. , vol.80 , pp. 1916-1919
    • Leung, K.1    Anderson, J.2    Sornette, D.3
  • 37
    • 0001361257 scopus 로고
    • Dynamics of an expanding circular fault
    • Madariaga, R., Dynamics of an expanding circular fault, Bull. Seismol. Soc. Am., 66, 639-666, 1976.
    • (1976) Bull. Seismol. Soc. Am. , vol.66 , pp. 639-666
    • Madariaga, R.1
  • 38
    • 85041268500 scopus 로고    scopus 로고
    • 3-d finite-difference simulation of a dynamic rupture
    • Madariaga, R., K. Olsen, and R. Archuleta, 3-d finite-difference simulation of a dynamic rupture (abstract), Eos Trans. AGU, 77(46), Fall Meet. Suppl., F470, 1996.
    • (1996) Eos Trans. AGU , vol.77 , Issue.46 FALL MEET. SUPPL.
    • Madariaga, R.1    Olsen, K.2    Archuleta, R.3
  • 39
    • 0027430462 scopus 로고
    • Scaling of the critical slip distance for seismic faulting with shear strain in fault zones
    • Marone, C., and B. Kilgore, Scaling of the critical slip distance for seismic faulting with shear strain in fault zones, Nature, 362, 618-620, 1993.
    • (1993) Nature , vol.362 , pp. 618-620
    • Marone, C.1    Kilgore, B.2
  • 40
    • 0001423016 scopus 로고    scopus 로고
    • Slip complexity in a crustal-plane model of an earthquake fault
    • Myers, C. R., B. E. Shaw, and J. S. Langer, Slip complexity in a crustal-plane model of an earthquake fault, Phys. Rev. Lett., 77, 972-975, 1996.
    • (1996) Phys. Rev. Lett. , vol.77 , pp. 972-975
    • Myers, C.R.1    Shaw, B.E.2    Langer, J.S.3
  • 41
    • 4644294891 scopus 로고    scopus 로고
    • A new mixed boundary condition for rupture simulation in finite differences
    • Nielsen, S. B., and K. B. Olsen, A new mixed boundary condition for rupture simulation in finite differences (abstract), Eos Trans. AGU, 79(45), Fall Meet. Suppl., F630, 1998.
    • (1998) Eos Trans. AGU , vol.79 , Issue.45 FALL MEET. SUPPL.
    • Nielsen, S.B.1    Olsen, K.B.2
  • 42
    • 0029530525 scopus 로고
    • Model of earthquake recurrence: Role of elastic wave radiation, relaxation of friction and inhomogeneity
    • Nielsen, S. B., L. Knopoff, and A. Tarantola, Model of earthquake recurrence: Role of elastic wave radiation, relaxation of friction and inhomogeneity, J. Geophys. Res., 100, 12,423-12,430, 1995.
    • (1995) J. Geophys. Res. , vol.100
    • Nielsen, S.B.1    Knopoff, L.2    Tarantola, A.3
  • 43
    • 0030685823 scopus 로고    scopus 로고
    • Three-dimensional dynamic simulation of the 1992 landers earthquake
    • Olsen, K. B., R. Madariaga, and R. J. Arculeta, Three-dimensional dynamic simulation of the 1992 landers earthquake, Science, 278, 834-838, 1997.
    • (1997) Science , vol.278 , pp. 834-838
    • Olsen, K.B.1    Madariaga, R.2    Arculeta, R.J.3
  • 44
    • 0028250215 scopus 로고
    • Prediction of large events in a dynamical model of a fault
    • Pepke, S. L., J. M. Carlson, and B. E. Shaw, Prediction of large events in a dynamical model of a fault, J. Geophys. Res., 99, 6769-6788, 1994.
    • (1994) J. Geophys. Res. , vol.99 , pp. 6769-6788
    • Pepke, S.L.1    Carlson, J.M.2    Shaw, B.E.3
  • 45
    • 0001467235 scopus 로고
    • Self-healing slip pulse on a frictional surface
    • Perrin, G. O., J. R. Rice, and G. Zheng, Self-healing slip pulse on a frictional surface, J. Mech. Phys. Solids, 43, 1461-1495, 1995.
    • (1995) J. Mech. Phys. Solids , vol.43 , pp. 1461-1495
    • Perrin, G.O.1    Rice, J.R.2    Zheng, G.3
  • 46
    • 0027427011 scopus 로고
    • Spatio-temporal complexity of slip on a fault
    • Rice, J. R., Spatio-temporal complexity of slip on a fault, J. Geophys: Res., 98, 9885-9907, 1993.
    • (1993) J. Geophys: Res. , vol.98 , pp. 9885-9907
    • Rice, J.R.1
  • 47
    • 0020556833 scopus 로고
    • Stability of steady frictional slipping
    • Rice, J. R., and A. L. Ruina, Stability of steady frictional slipping, J. Appl. Mech., 50, 343-349, 1983.
    • (1983) J. Appl. Mech. , vol.50 , pp. 343-349
    • Rice, J.R.1    Ruina, A.L.2
  • 48
    • 0029916525 scopus 로고    scopus 로고
    • Slip complexity in earthquake fault models
    • Rice, J. R., and Y. Ben-Zion, Slip complexity in earthquake fault models, Proc. Natl. Acad. Sci., U.S.A., 93, 3811-3818, 1996.
    • (1996) Proc. Natl. Acad. Sci., U.S.A. , vol.93 , pp. 3811-3818
    • Rice, J.R.1    Ben-Zion, Y.2
  • 49
    • 0000838389 scopus 로고
    • Three-dimensional perturbation solution for a dynamic planar crack moving unsteadily in a model elastic solid
    • Rice, J. R., Y. Ben-Zion, and K.-S. Kim, Three-dimensional perturbation solution for a dynamic planar crack moving unsteadily in a model elastic solid, J. Mech. Phys. Solids, 42, 813-843, 1994.
    • (1994) J. Mech. Phys. Solids , vol.42 , pp. 813-843
    • Rice, J.R.1    Ben-Zion, Y.2    Kim, K.-S.3
  • 50
    • 0022908336 scopus 로고
    • Dynamic motion of a single degree of freedom system following a rate and state dependent friction law
    • Rice, J. R., and S. T. Tse, Dynamic motion of a single degree of freedom system following a rate and state dependent friction law, J. Geophys. Res., 91, 521-530, 1986.
    • (1986) J. Geophys. Res. , vol.91 , pp. 521-530
    • Rice, J.R.1    Tse, S.T.2
  • 51
    • 0020968914 scopus 로고
    • Slip instability and state variable friction laws
    • Ruina, A., Slip instability and state variable friction laws, J. Geophys. Res., 88, 10,359-10,370, 1983.
    • (1983) J. Geophys. Res. , vol.88
    • Ruina, A.1
  • 52
    • 0001090767 scopus 로고
    • Boltzmann fluctuations in numerical simulations of nonequilibrium lattice threshold systems
    • Rundle, J., W. Klein, S. Gross, and D. Turcotte, Boltzmann fluctuations in numerical simulations of nonequilibrium lattice threshold systems, Phys. Rev. Lett., 75, 1658-1661, 1995.
    • (1995) Phys. Rev. Lett. , vol.75 , pp. 1658-1661
    • Rundle, J.1    Klein, W.2    Gross, S.3    Turcotte, D.4
  • 53
    • 0028582774 scopus 로고
    • Complexity in a spatially uniform continuum fault model
    • Shaw, B. E., Complexity in a spatially uniform continuum fault model, Geophys. Res. Lett., 21, 1983-1986, 1994.
    • (1994) Geophys. Res. Lett. , vol.21 , pp. 1983-1986
    • Shaw, B.E.1
  • 54
    • 0029527682 scopus 로고
    • Frictional weakening and slip complexity in earthquake faults
    • Shaw, B. E., Frictional weakening and slip complexity in earthquake faults, J. Geophys. Res., 100, 18,239-18,251, 1995.
    • (1995) J. Geophys. Res. , vol.100
    • Shaw, B.E.1
  • 55
    • 0031448557 scopus 로고    scopus 로고
    • Model quakes in the two-dimensional wave equation
    • Shaw, B. E., Model quakes in the two-dimensional wave equation, J. Geophys. Res., 102, 27,367-27,377, 1997.
    • (1997) J. Geophys. Res. , vol.102
    • Shaw, B.E.1
  • 56
    • 0000225581 scopus 로고
    • Fault zone models, heat flow, and the depth distribution of earthquakes in the continental crust of the United States
    • Sibson, R., Fault zone models, heat flow, and the depth distribution of earthquakes in the continental crust of the United States, Bull. Seismol. Soc. Am., 72, 151-163, 1982.
    • (1982) Bull. Seismol. Soc. Am. , vol.72 , pp. 151-163
    • Sibson, R.1
  • 57
    • 0031817446 scopus 로고    scopus 로고
    • Use of fault striations and dislocation models to infer tectonic shear stress during the 1995 Hyogo-ken Nanbu (Kobe), Japan, earthquake
    • Spudich, P., Use of fault striations and dislocation models to infer tectonic shear stress during the 1995 Hyogo-ken Nanbu (Kobe), Japan, earthquake, Bull. Seismol. Soc. Am., 88, 413-427, 1998.
    • (1998) Bull. Seismol. Soc. Am. , vol.88 , pp. 413-427
    • Spudich, P.1
  • 58
    • 4243180110 scopus 로고
    • Origin of stick-slip motion in boundary lubrication
    • Thompson, P. A., and M. O. Robbins, Origin of stick-slip motion in boundary lubrication, Science, 250, 792-794, 1990.
    • (1990) Science , vol.250 , pp. 792-794
    • Thompson, P.A.1    Robbins, M.O.2
  • 59
    • 0022849780 scopus 로고
    • Constitutive behavior and stability of frictional sliding of granite
    • Tullis, T. E., and J. Weeks, Constitutive behavior and stability of frictional sliding of granite, Pure Appl. Geophys., 124, 383-414, 1986.
    • (1986) Pure Appl. Geophys. , vol.124 , pp. 383-414
    • Tullis, T.E.1    Weeks, J.2
  • 60
    • 0032426291 scopus 로고    scopus 로고
    • Conditions under which velocity weakening friction allows a self-healing versus a cracklike mode of rupture
    • Zheng, G. and J. Rice, Conditions under which velocity weakening friction allows a self-healing versus a cracklike mode of rupture, Bull. Seismol. Soc. Am., 88, 1466-1483, 1998.
    • (1998) Bull. Seismol. Soc. Am. , vol.88 , pp. 1466-1483
    • Zheng, G.1    Rice, J.2


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