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Umbra area (Perugia) from the middle of May to the beginning
of August 1979, which has been recorded by a seismic station, installed in
Various events have had magnitude ranging from 1.3 to 2.9. The
registrata da una stazione sismica installata nel paese.
Data' elaboration has allowed to point out that the hypocentre' depth
increases, considerably, from Est to West.
At last, it represents a possible correlation between observed distribution
and geological structures of the interested area.
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