Abstract
Abstract In order to obtain a way to quantify the spatial dependence between earthquakes in the Betic-Alboran (south Spain) region, the Single Link Clustering ( slc ) method has been applied to a catalogue of earthquakes, with magnitude greater or equal to 4.0, that occurred in this region from 1962 to 1989. The significant distances of links obtained, which show alignments whose direction is similar to the direction of some surface faults, are 15, 30 and 40 km, and the limit of inconsistency appears at distances greater than or equal to 70 km. Most of the historical destructive earthquakes have taken place within the clusters obtained, and the majority within the dc = 30 km cluster. This implies that the most relevant seismic activity occurs in some source areas where there is a strong nesting of activity.
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