The Fes cluster is named after the city of Fes (Fez) in northern
Morocco. The sparse distribution of seismograph stations and the diffuse
and generally low level of seismicity made it necessary to encompass a
fairly large region for this cluster. Most events are small and recorded
only to regional distances but there is a modest number of teleseismic
arrivals. All events have depth control from near-source and
local-distance readings, teleseismic depth phases or waveform analysis.
The range of depths observed in this cluster is larger than usual, with
events from very shallow depths down to around 50 km.
