Publikationsdatum:
2017-04-04
Beschreibung:
Tephra fallout associated with renewal of volcanism
at the Campi Flegrei caldera is a serious threat to the
Neapolitan area. In order to assess the hazards related with
tephra loading, we have considered three different eruption
scenarios representative of past activity: a high-magnitude
event similar to the 4.1 ka Agnano-Monte Spina eruption, a
medium-magnitude event, similar to the ∼3.8 ka Astroni 6
eruption, and a low-magnitude event similar to the Averno
2 eruption. The fallout deposits were reconstructed using
the HAZMAP computational model, which is based on a
semi-analytical solution of the two-dimensional advection–
diffusion–sedimentation equation for volcanic tephra. The
input parameters into the model, such as total erupted mass,
eruption column height, and bulk grain-size and components
distribution, were obtained by best-fitting field data.
We carried out tens of thousands simulations using a
statistical set of wind profiles, obtained from NOAA reanalysis.
Probability maps, relative to the considered
scenarios, were constructed for several tephra loads, such
as 200, 300 and 400 kg/m2. These provide a hazard
assessment for roof collapses due to tephra loading that
can be used for risk mitigation plans in the area.
Beschreibung:
Published
Beschreibung:
259–273
Beschreibung:
3.6. Fisica del vulcanismo
Beschreibung:
4.3. TTC - Scenari di pericolosità vulcanica
Beschreibung:
JCR Journal
Beschreibung:
reserved
Schlagwort(e):
Tephra fallout hazard
;
Tephra loading
;
Campi Flegrei caldera
;
04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating, processes, transport
;
04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous
;
04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk
;
05. General::05.01. Computational geophysics::05.01.03. Inverse methods
Repository-Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Materialart:
article
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