collapse risk aftershock factors

As observed in Turkey 2023, there are also collapses during afterschocks…. currently, collapse risk studies only consider mainshocks, but aftershocks have being neglected in collapse risk studies as eads (only 2 IM in collapse risk), xxx and miranda(enhanced collapse risk in 2 IMs..)

If we include aftershock hazard, collapse risk increase compared to a ‘declustered’ hazard….

The idea is … collapse_risk_with_aftershocks = collapse_risk_without_aftershock * amplification_factor