Gerard V. Middleton
Michael J. Church
Mario Coniglio
Lawrence A. Hardie
Frederick J. Longstaffe
Richard M. Iverson
2003
<p><span>Gravity-driven mass flows, also known as sediment gravity flows, include a spectrum of phenomena in which more-or-less coherent mixtures of grains and intergranular fluid flow down slopes. At one end of this spectrum are dilute flows in which momentum is transferred mostly by fluid forces and sediment is largely a passive cargo that increases the effective fluid density. These dilute mass flows are part of a larger class of fluid dynamical phenomena known as gravity currents (</span><span class="CitationRef">Simpson, 1987</span><span>; </span><span class="CitationRef">Bonnecaze et al., 1993</span><span>). At the other end of the spectrum are concentrated mass flows such as granular avalanches and debris flows. Forces exerted by interacting solid grains dominate momentum transfer in such flows, although fluid forces can mediate grain interactions (</span><span class="CitationRef">Savage and Hutter, 1989</span><span>; </span><span class="CitationRef">Iverson, 1997</span><span>).</span></p>
application/pdf
10.1007/978-1-4020-3609-5_106
en
Springer
Gravity-driven mass flows
chapter