Publication Date:
2021-05-11
Description:
We studied the conditions of crust and tube formation of a lava flow moving under the
effect of gravity in a rectangular cross-section channel and assumed a power-law
rheology for lava. We followed the work of Valerio et al. (2008), who studied the effect
of surface cooling on the formation and accretion of the crust in the central region of
the channel, assuming for lava a Newtonian rheology. According to these authors, tube
formation is influenced by topography and channel morphology. In this work, we
extended this study to a non-Newtonian rheology, in particular to the power-law
rheology. Results indicate that a power-law rheology strongly influences the condition
of crust formation but does not produce significant differences as a function of
topographical or morphological variations.
Description:
Published
Description:
309-319
Description:
JCR Journal
Description:
restricted
Keywords:
Power law rheology
;
04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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