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Debris flows: experiments and modelling

Turnbull, Barbara; Bowman, Elisabeth T.; McElwaine, Jim N.

Authors

Elisabeth T. Bowman

Jim N. McElwaine



Abstract

Debris flows and debris avalanches are complex, gravity-driven currents of rock, water and sediments that can be highly mobile. This combination of component materials leads to a rich morphology and unusual dynamics, exhibiting features of both granular materials and viscous gravity currents. Although extreme events such as those at Kolka Karmadon in North Ossetia (2002) [1] and Huascarán (1970) [2] strongly motivate us to understand how such high levels of mobility can occur, smaller events are ubiquitous and capable of endangering infrastructure and life, requiring mitigation. Recent progress in modelling debris flows has seen the development of multiphase models that can start to provide clues of the origins of the unique phenomenology of debris flows. However, the spatial and temporal variations that debris flows exhibit make this task challenging and laboratory experiments, where boundary and initial conditions can be controlled and reproduced, are crucial both to validate models and to inspire new modelling approaches. This paper discusses recent laboratory experiments on debris flows and the state of the art in numerical models.

Citation

Turnbull, B., Bowman, E. T., & McElwaine, J. N. (2015). Debris flows: experiments and modelling. Comptes Rendus Physique, 16(1), 86-96. https://doi.org/10.1016/j.crhy.2014.11.006

Journal Article Type Article
Acceptance Date Nov 28, 2014
Online Publication Date Dec 31, 2014
Publication Date Jan 31, 2015
Deposit Date Jul 27, 2018
Print ISSN 1631-0705
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 16
Issue 1
Pages 86-96
DOI https://doi.org/10.1016/j.crhy.2014.11.006
Public URL http://www.scopus.com/inward/record.url?eid=2-s2.0-84923275458&partnerID=40&md5=4e06b11cbf981c832c33e1e4e90a4a79
Publisher URL https://www.sciencedirect.com/science/article/pii/S1631070514001868?via%3Dihub