Iceland, Reykjanes: 1968-2021

The RVZ cluster is named for the Reykjanes Volcanic Zone in southwestern Iceland. The cluster does not include events in the South Island Seismic Zone immediately to the east because initial attempts to include events from both source regions led to inconsistencies, likely due to changing crustal velocity characteristics. Since 2006 data is available for a number of seismic stations in the Reykjanes Volcanic Zone that provde very strong location calibrations, so the cluster is restricted to events since that time. Because of the uniformly good station coverage, this cluster can be relocated with free depth. There are no events deeper than ~10 km and there is a peak of activity near 5 km depth. [...]