期刊
GEOPHYSICAL JOURNAL INTERNATIONAL
卷 177, 期 2, 页码 806-814出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1365-246X.2009.04093.x
关键词
Numerical solutions; Inverse theory; Radar interferometry; Crustal structure; Volcano monitoring
资金
- Italian Presidenza del Consiglio dei Ministri-Dipartimento della Protezione Civile (DPC)
Deformation data collected at Mount Etna from 1993 to 1997 show that the inflation of the volcano edifice is accompanied by instability of the eastern flank. We propose a 3-D finite element model including topography and lateral variations of elastic constants. Source parameters of the inflating source are constrained by a direct search followed by an appraisal stage of the sampled solutions. The instability of the eastern flank is addressed using a kinematic approach, consisting of a rigid-body translation over a prescribed area. The aim is to evaluate how source parameters are affected by sliding of the eastern flank. When sliding is accounted for, the inferred source location shifts similar to 1 km SE and its strength decreases by similar to 20 per cent.
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