PDF · Útgáfa NR-1800-1062 — 2026

Nákvæmn­isgrein­ing nýs eðlis­fræði­legs skjálfta­mats fyrir alla byggða­kjarna Suðvestur­lands

This study improves seismic hazard assessment in Southwest Iceland using a physics-based approach to probabilistic seismic hazard analysis (PSHA). The highest seismic hazard in Iceland occurs in the South Iceland Seismic Zone (SISZ) and the Reykjanes Peninsula Oblique Rift (RPOR), where transform faulting occurs close to densely populated areas, including the Capital Region where about 2/3 of Iceland's population resides. To better represent seismic sources, a physics-based finite-fault system model was developed for the SISZ-RPOR region, calibrated to plate motion and constrained by historical and instrumental seismicity as well as mapped fault geometries.