Publikationsdatum:
2017-04-04
Beschreibung:
A tomomorphometric analysis of the Somma-Vesuvius
topography is presented. This consists in extracting
horizontal cross sections at different altitudes, and in
determining some morphometric parameters: radius of the
circle with a surface area equal to the cross section,
circularity, ratio between the major and minor axis of the
best fitting ellipse, orientation a of the ellipse major axis,
and the x-y centroid. The Somma includes three portions:
the apron zone, the flanks, and the summit caldera
boundary. Between 225 m and 525 m, a is 50 –60 .
Between 600 m and 775 m, a is 130 –135 . These are the
preferred strike of the eruptive fissures affecting the
northwestern Somma flanks, the faults affecting the whole
edifice, the nodal planes from local earthquakes. The
Somma activity developed along a NE-SW structural
discontinuity, whereas the post-caldera activity
concentrated along a NW-SE striking structure. Somma
activity migrates from SE to NW.
Beschreibung:
Published
Beschreibung:
L17305
Beschreibung:
JCR Journal
Beschreibung:
reserved
Schlagwort(e):
Tomomorphometry
;
Somma-Vesuvius volcano
;
04. Solid Earth::04.04. Geology::04.04.03. Geomorphology
;
04. Solid Earth::04.04. Geology::04.04.09. Structural geology
Repository-Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Materialart:
article
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