Seismic Evidence of an Extended Magmatic Sill Under Mt. Vesuvius

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Science  16 Nov 2001:
Vol. 294, Issue 5546, pp. 1510-1512
DOI: 10.1126/science.1064893

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Mt. Vesuvius is a small volcano associated with an elevated risk. Seismic data were used to better define its magmatic system. We found evidence of an extended (at least 400 square kilometers) low-velocity layer at about 8-kilometer depth. The inferredS-wave (∼0.6 to 1.0 kilometer per second) andP-wave velocities (∼2.0 kilometer per second) as well as other evidence indicate an extended sill with magma interspersed in a solid matrix.

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