Possible reduction of earthquake hazard on the Wellington Fault, New Zealand, after the nearby 1855, M 8.2 Wairarapa earthquake and implication for interpreting paleoearthquake intervals

摘要: Based on the indicative modelling, changes in Coulomb failure function (?CFS) suggest that W-HV segment and T-P segment could be stable at least future 300 years and 190 respectively, for these periods should needed to accumulate stress released by M 8.2 Wairarapa earthquake, assuming that there is no influence from other sources, earthquake did not alter threshold, a fairly deterministic process. The results also show of the Wellington Fault caused 1855, significant considering average fault rupture recurrence interval about 500-770 years. With our present understanding of faults, it can concluded 1855 retarded earthquake occurrence of Fault. Thus seismic hazard in region may over-estimated.