Afterslip distribution following the 2003 Tokachioki earthquake: An estimation based on the Green’s functions for an inhomogeneous elastic space with subsurface structure

Earth, Planets and Space

Table 1 Elastic material parameters in each region.

Region	(km/s)	(km/s)	ρ^c (× 10³kg/m³)	E^d* (GPa)	ν^e*
Upper Crust	5.664	3.300	2.67	72.3 (100)	0.243 (0.250)
Lower Crust	6.570	3.730	3.00	105 (100)	0.263 (0.250)
Upper Mantle	8.270	4.535	3.32	176 (100)	0.285 (0.250)
Plate	—	—	—	95.4 (100)	0.258 (0.250)

^aP- and ^bS-wave velocities and ^cdensities for Upper Crust, Lower Crust and Upper Mantle are from Nakajima et al. (2001) and from Dambara and Tomoda (1969), and ^dYoung’s modulus and ^ePoisson’s ratio for Plate from Liu (1980) and from Suito and Hirahara (1999), respectively. *Young’s modulus and Poisson’s ratio in parenthesis are those for the homogeneous elastic model.