Abstract
Two models are introduced for the rheology and dynamics of subaqueous rock avalanches. Both models stem from the premise that the initial rock slab is rapidly transformed into a fragmented medium. The first model is based on hydroplaning; however, if hydroplaning occurs, it can start only after sufficient fragmentation, and with a permeable matrix. In a second model, the fragmenting rock absorbs water in its matrix, thus changing into a non-hydroplaning cohesive flow that progressively loses strength. Numerical simulations and theoretical considerations show that both processes are theoretically possible.
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De Blasio, F.V. (2013). Dynamics, Velocity, and Run-Out of Subaqueous Rock Avalanches. In: Margottini, C., Canuti, P., Sassa, K. (eds) Landslide Science and Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31427-8_7
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