Action 5.2.1 : Fault Specific PSHA

Technical Issue

Assess what precision/level of knowledge related to source parameters is necessary such that a fault-based modelling performs better than area sources in PSHA

Proposed Approach

Define and propagate uncertainties & asses impact of uncertainty and predictability of specific fault models vs diffuse seismicity models: synthetic fault model + simple PSHA

Comment: PG&E is using simplified factors to correct for point sources versus faults > PEER PSHA code comparisons show this works well

Deliverable

Report & recommendations