Search results for " lava flow"
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Forecasting Effusive Dynamics and Decompression Rates by Magmastatic Model at Open-vent Volcanoes
2017
AbstractEffusive eruptions at open-conduit volcanoes are interpreted as reactions to a disequilibrium induced by the increase in magma supply. By comparing four of the most recent effusive eruptions at Stromboli volcano (Italy), we show how the volumes of lava discharged during each eruption are linearly correlated to the topographic positions of the effusive vents. This correlation cannot be explained by an excess of pressure within a deep magma chamber and raises questions about the actual contributions of deep magma dynamics. We derive a general model based on the discharge of a shallow reservoir and the magmastatic crustal load above the vent, to explain the linear link. In addition, we…
Intervento di ripristino della copertura arborea su un'area del parco dell'Etna interessata da colata lavica recente.
1996
The planning and results of a reafforestation carried out on a private area occurring in the Etna Wildlife Reserve C zone are presented. The area consists of a terraced slope 70.000 square meters wide, made out of a lava flow part which dates back to 1983. At first were planted and seeded Astragalus siculus Biv. and Festuca circummediterranea Patzke, in order to set a pioneer vegetation cover; then were planted some aboreal species having a leading role in the physiognomical characterisation of the Etna landscape, like Betula aetnenis Raf., Pinus laricio Poiret, Populus tremula L. The success of the intervention is shown by the fairly quick penetration of 26 species coming from the neighbou…