Table 3 Potential sources of errors for each of the numerical and empirical Green’s functions
Green’s functions | Potential sources of errors | Mitigation method |
|---|---|---|
Numerical Green’s functions | Uncertainty in the subsurface structure model | Tuning of the subsurface structure model using records of small events (e.g., Hikima and Koketsu 2005; Asano and Iwata 2011) |
Empirical Green’s functions | Errors associated with the allocation of small events to the subfaults | The fault plane is divided into two or more parts and different small events are assigned to those parts (e.g., Nozu 2007; Nozu and Irikura 2008) |