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Bookmark or Share- Mitigation of lava flow invasion hazard through optimized barrier ...The flow temporal evolutions, useful to evaluate the effusion rate trends, were reconstructed by means of a semi-quantitative method based on the analysis of daily lava flow maps, on the lava thicknesses evaluated in the field, and on the analysis of pre and post eruption DEMs (Coltelli et al., 2007). The derived effusion rates were adopted as ...
- Patterns and processes: Subaerial lava flow morphologies: A review ...The final morphology of a solidified lava flow is the result of complicated interactions between the lava and the environment in which it is emplaced; and lava is a temperature-dependent mixture of minerals (with different sizes, shapes and growth rates), liquid (with temperature-dependent composition and viscosity), and gas (that may be dissolved in the lava, or may be segregated into ...
- Numerical simulation of open channel basaltic lava flow through ...Wetted contact lines between the lava and channel walls are formed as a flow traverses a bend. These wetted lines can be affected by rheology and other factors, such as the surface roughness of the walls and floor of the channel (Rumpf et al., 2018). The flow rate and the slope of the channel bottom will also affect the behaviour of the wetted ...
- Lava Flow Hazards and Modeling - ScienceDirectTo give an example of a lava flow 10 km long, the time for lava to travel from the vent to the front may be only hours for pahoehoe and aa flows, and days for blocky flows. (Recall that this travel time is less than the interval since effusion began: the former is given by [flow length]/[mean velocity along a flow]; the latter is [flow length ...
- Interpretations of lava flow properties from radar remote sensing data ...Lava flow surface roughness is defined at a range of scales. Centimetre scale roughness (e.g. crescent ripples and folds) is produced when the lava encounters small topographic obstacles and when a (plastic) crust of a few mm thickness is deformed during cooling (Fink and Fletcher, 1978; Gregg et al., 1998).
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