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Volume 17, issue 11 | Copyright
Nat. Hazards Earth Syst. Sci., 17, 2053-2058, 2017
https://doi.org/10.5194/nhess-17-2053-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Brief communication 28 Nov 2017

Brief communication | 28 Nov 2017

Brief communication: The curious case of the large wood-laden flow event in the Pocuro stream (Chile)

Diego Ravazzolo1,2, Luca Mao3,4, Bruno Mazzorana5,6,7, and Virginia Ruiz-Villanueva8 Diego Ravazzolo et al.
  • 1Hydraulic and Environmental Engineering Department, Pontificia Universidad Católica de Chile, Santiago, Chile
  • 2Marine Energy Research and Innovation Center (MERIC), Santiago, Chile
  • 3Department of Ecosystems and Environment, Pontificia Universidad Católica de Chile, Santiago, Chile
  • 4Centro Nacional de Investigación para la Gestión Integrada de Desastres Naturales, Santiago, Chile
  • 5Instituto de Ciencias de la Tierra, Faculty of Science, Universidad Austral de Chile, Valdivia, Chile
  • 6Universidad Austral de Chile, RINA – Research Unit on Natural and Anthropogenic Risk, Valdivia, Chile
  • 7Millennium Nucleus CYCLO The Seismic Cycle Along Subduction Zones, Valdivia, Chile
  • 8Institute for Environmental Sciences, University of Geneva, Geneva, Switzerland

Abstract. Large wood transported during extreme flood events can represent a relevant additional source of hazards that should be taken into account in mountain environments. However, direct observations and monitoring of large-wood transport during floods are difficult and scarce. Here we present a video of a flood characterised by multiple phases of large-wood transport, including an initial phase of wood-laden flow rarely described in the literature. Estimations of flow velocity and transported wood volume provide a good opportunity to develop models of large-wood-congested transport.

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