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Marilena Filippucci
University of Bari
19Publications
5H-index
43Citations
Publications 19
Newest
#2Edoardo Del Pezzo (UGR: University of Granada)H-Index: 24
Last.Andrea Natale TallaricoH-Index: 10
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Abstract Crustal seismic attenuation in the Gargano Promontory (Southern Italy) was inferred by analyzing coda waves of about one hundred small magnitude earthquakes recorded by the OTRIONS local seismic network. Coda attenuation Qc was computed using the Sato (1977) model, i.e. the assumption of single back-scattering, at different lapse times and at different frequencies. Average Qc is comparable with the same quantity measured in the adjacent area of the Umbria–Marche region (central Italy). ...
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#1Marilena Filippucci (University of Bari)H-Index: 5
#2Andrea Tallarico (University of Bari)H-Index: 10
Last.Salvatore de Lorenzo (University of Bari)H-Index: 9
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We consider a thermo-rheological model made of a viscoelastic half-space with Maxwell rheology and temperature-dependent viscosity. The half-space is made of layers with different values of density, thermal conductivity, activation energy and heat productivity. The model relates the surface heat flow to the depth of the brittle-ductile transition and the thickness of the seismogenic layer. The model is applied to the Gargano area (Italy) which is subject to a frequent low-magnitude seismic activ...
1 CitationsSource
Last.Michele Dragoni (UNIBO: University of Bologna)H-Index: 18
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Cooling and dynamics of lava flowing in a rectangular channel driven by the gravity force is numerically modeled. The purpose is to evaluate the thermal process as a function of time involving the liquid lava in contact with the solid boundary that flanks lava. Lava rheology is dependent on temperature and strain rate according to a power law function. The model couples dynamics and thermodynamics inside the lava channel and describes the thermal evolution of the solid boundary enclosing the cha...
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#1Marilena Filippucci (University of Bari)H-Index: 5
#2Andrea Tallarico (University of Bari)H-Index: 10
Last.Michele Dragoni (UNIBO: University of Bologna)H-Index: 10
view all 3 authors...
Source
#1Marilena Filippucci (University of Bari)H-Index: 5
#2Andrea Tallarico (University of Bari)H-Index: 10
Last.Michele Dragoni (UNIBO: University of Bologna)H-Index: 18
view all 3 authors...
Source
#1Marilena Filippucci (University of Bari)H-Index: 5
#2Andrea Tallarico (University of Bari)H-Index: 10
Last.Michele Dragoni (UNIBO: University of Bologna)H-Index: 10
view all 3 authors...
We investigated the cooling of a lava flow in the steady state considering that lava rheology is pseudoplastic and dependent on temperature. We consider that cooling of the lava is caused by thermal radiation at the surface into the atmosphere and thermal conduction at the channel walls and at the ground. The heat equation is solved numerically in a 3D computational domain. The fraction of crust coverage is calculated under the assumption that the solid lava is a plastic body with temperature de...
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#2Andrea Tallarico (University of Bari)H-Index: 10
Last.Michele Dragoni (UNIBO: University of Bologna)H-Index: 10
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[1] The cooling of a lava flow, both in the transient and the steady state, is investigated considering that lava rheology is pseudoplastic and dependent on temperature. Lava exits from the vent with constant velocity and flows down a slope under the effect of gravity force inside a channel of rectangular cross section. We consider that cooling of lava is caused by thermal radiation into the atmosphere and thermal conduction at the channel walls and at the ground. The heat equation is solved num...
9 CitationsSource
In this work we studied the effect of a power-law rheology on a gravity driven lava flow. Assuming a viscous fluid with constant temperature and constant density and assuming a steady flow in an inclined rectangular channel, the equation of the motion is solved by the finite volume method and a classical iterative solutor. Comparisons with observed channeled lava flows indicate that the assumption of the power-law rheology causes relevant differences in average velocity and volume flow rate with...
1 CitationsSource
#2Andrea TallaricoH-Index: 10
Last.Michele DragoniH-Index: 10
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#1Andrea Tallarico (University of Bari)H-Index: 10
#2Michele Dragoni (UNIBO: University of Bologna)H-Index: 10
Last.Antonella Valerio (UNIBO: University of Bologna)H-Index: 3
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We present here the results from dynamical and thermal models that describe a channeled lava flow as it cools by radiation. In particular, the effects of power-law rheology and of the presence of bends in the flow are considered, as well as the formation of surface crust and lava tubes. On the basis of the thermal models, we analyze the assumptions implicit in the currently used formulae for evaluation of lava flow rates from satellite thermal imagery. Assuming a steady flow down an inclined rec...
2 CitationsSource
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