Mathematics – Logic
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3720308h&link_type=abstract
Geophysical Research Letters, Volume 37, Issue 20, CiteID L20308
Mathematics
Logic
4
Volcanology: Effusive Volcanism, Volcanology: Lava Rheology And Morphology, Volcanology: Magma Migration And Fragmentation, Volcanology: Remote Sensing Of Volcanoes, Volcanology: Volcano Monitoring (7280)
Scientific paper
A simple linear relation can be used to link time averaged discharge rate (TADR) and lava flow area (A). The relation applies to given insulation conditions, as described by the characteristic flow surface temperature (Te), and will vary from case-to-case depending on rheological and topographic influences on flow spreading. Most flows have insulation conditions that change through time, modifying the relationship between TADR and area as insulation conditions evolve. Using lidar data we can define TADR, the flow area that the discharge feeds and Te, allowing generation of a case-specific relation to convert satellite-data-derived flow areas to TADR. For Etna's 2006 lava flow field we obtain a relation whereby TADR = 5.6 × 10-6 A for well insulated conditions (Te = 100°C) and TADR = 1.5 × 10-4 A for poorly insulated conditions (Te = 600°C).
Boschi Enzo
Favalli Massimiliano
Fornaciai Alessandro
Harris Andrew
Steffke Andrea
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