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|Authors: ||Del Pezzo, E.*|
La Rocca, M.*
|Title: ||A seismic array on Mt. Vesuvius|
|Issue Date: ||1999|
|Series/Report no.: ||Open File Report|
|Keywords: ||seismic array|
|Abstract: ||In November 1997 a seismic antenna (array) of short period seismometers was
installed on the south-western flank of Mt. Vesuvius; aim of the experiment was to test the
use of non-conventional devices for the seismic monitoring of this volcano. In 7 months local
seismicity, regional earthquakes and samples of seismic noise were recorded by the array and
organised in a data base.
Local earthquakes and seismic noise have been analysed with array techniques to
investigate the spectral, kinematic and polarization properties of the wavefield. Preliminary
results show that the backazimuth of local earthquakes is oriented in the direction of the crater
area. For some events, the source location has been constrained using a simplified back
propagation in a 2-D velocity structure.
The noise wavefield is characterized by the predominance of a sustained low frequency
component (< 1Hz) whose source is located S-SE of the array. This low frequency signal has
been interpreted as associated to the sea-loading in the gulf of Naples.|
|Appears in Collections:||04.06.08. Volcano seismology|
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