Modelling gravity driven flows in the environment

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Gravity or density-driven currents are ubiquitous in nature and may also be initiated as the result of human activities. Manifestations of such flows include,but are not limited to, powder snow avalanches, pyroclastic flows from volcanoes, magma flows from magma chambers, turbidity currents in the oceans, sea breeze fronts, break-out floods from the failure of end moraine dams, debris and mud flows, dense gas releases such as occurred in Bhopal India in 1984, and oil spills in reservoirs, lakes and oceans. Turbidity currents in the oceans lead to the formation of bottom deposits of silt and sand referred to as turbidites and these, in turn, often act as reservoirs for oil and gas and so are of great interest for their economic impact. Gravity currents that arise from