Insights into earthquake source physics from high-frequency ... - IRIS

More documents

Recommendations

Info

$Refraction - IRIS$

Weertman (1980): 2D analytical solution for steady state mode II slip pulse on a bimaterial interface governed by Coulomb friction. In-plane slip: 2(x,t)# u(x,y# 0 + ,t)(u(x,y# 0 ( ,t) Moving coordinate system: 1 = x – ct Dislocation density: B(1) = – d2/d1 The shear and normal stress on the interface are ' 3 ( c, ) 4 ) B( 1 ') . ( 1 ) # . + d1 ' 5 1 ( 1 ' (' , ( 1 ) # , ' ( 3 *( c ,) 4 ) B( 1 ) ' ! compliant stiff u(x,y # 0 + ,t) u(x,y # 0 ( ,t) •In a homogeneous solid 3* = 0; there is no coupling between slip and ,. •For subsonic rupture on a bimaterial interface in the direction of motion of the compliant solid, 3*> 0 and , drops dynamically (producing local dilation). •In the opposite direction, 3*< 0 and , increases dynamically (local compression). •Adams (1995): The bimaterial effects increase with propagation distance!
Wrinkle-like rupture pulse compliant stiff Andrews and Ben-Zion, 1997; Ben-Zion and Andrews, 1998; Cochard and Rice, 2000; Ben-Zion, 2001; Ben-Zion and Huang, 2002, Shi and Ben-Zion, 2006, Ampuero and Ben-Zion, 2008; Brietzke et al., 2009
Page 1 and 2: Insights into earthquake source phy
Page 3 and 4: Basic relations Total strain has el
Page 5 and 6: Order of magnitude estimates of con
Page 7 and 8: Conclusions I • The ratio of radi
Page 9: Can be relevant to numerous importa
Page 13 and 14: Estimates of slip velocities (Ben-Z
Page 15 and 16: Slip-weakening friction (Shi and Be
Page 17 and 18: Simulations with imposed super-shea
Page 19 and 20: The results are robust with respect
Page 21 and 22: Relations to field observations? Ne
Page 23 and 24: Damage generation for different dep
Page 25 and 26: com. fracture length (cm) 60 50 40
Page 27 and 28: Scott et al. (1994) Shapiro et al.
Page 29 and 30: Pulverized rocks in the Mojave sect
Page 31 and 32: Asymmetric dynamic earthquake trigg
Page 33: Conclusions II • Ruptures along a

Insights into earthquake source physics from high-frequency ... - IRIS

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?