The 1963 Landslide and Flood at Vaiont Reservoir Italy. A tsunami ball simulation

Ward, Steven N. and Day, Simon (2011) The 1963 Landslide and Flood at Vaiont Reservoir Italy. A tsunami ball simulation. Italian journal of geosciences, 130 (1). pp. 16-26. ISSN 2038-1727

PDF 02_(10-10)_WARD_16-26.pdf - Published Version Restricted to Repository staff only Download (14MB)

Abstract

We apply the recently developed «tsunami ball» method to construct a physics-based simulation of the 1963 Vaiont Reservoir landslide and flood disaster. Previous tsunami ball applications restricted attention to landslide-generated sea waves and local runup. For the first time, we expand the approach to include overland flows and floods in a dam-break like situation. The Vaiont landslide was not a debris avalanche, but rather a semi-coherent slump. The slump versus avalanche distinction is embodied with a 2-D variation of a particulate landslide model. With proper adjustment of landslide parameters, we find that a slump of dimension and volume consistent with observations can indeed slip from the south slope of the reservoir, splash water ~200 m up on the north slope, spill 30 million m3 of water over the dam and flood the valley below – all as were recorded in that day’s events. Incorporating runup and flood information with geological data provides additional insight into the kinematics of the landslide. The observed distribution of inundation requires that the eastern part of the landslide begin to move before the western part, so trapping and pushing more water over the dam than would otherwise have been the case. As aids for visualization, this paper includes links to Quicktime movies of the simulations, including a three dimensional «fly by»

Item Type:	Article
Additional Information:	APPENDIX B. Quicktime movie links to the simulations presented in this article Landslide: http://es.ucsc.edu/~ward/vaiont-slide.mov Flood in Map View: http://es.ucsc.edu/~ward/vaiont-wave2d.mov Flood in 3D View looking East: http://es.ucsc.edu/~ward/vaiont-wave3d(EW).mov Flood in 3D View looking North: http://es.ucsc.edu/~ward/vaiont-wave3d(NS).mov Flood in 3D Perspective «Fly By»: http://es.ucsc.edu/~ward/Vaiont-FlyBy.mov Composite Movie with Text http://es.ucsc.edu/~ward/vaiont-pro.mov
Uncontrolled Keywords:	Landslide, Tsunami, flood
Subjects:	500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.4 Geomorfologia e idrosfera > 551.46 Idrosfera, Geologia sottomarina e Oceanografia (Classificare qui le acque marine, l'Idrografia, l'Oceanografia fisica; le opere interdisciplinari sulla Scienza del mare, sugli oceani e i mari) > 551.463 Onde (Include l'aumento di livello del mare in tempesta, le sesse) (Classificare qui le onde da vento) (Classificare le opere d'insieme sulle interazioni oceano-atmosfera in 551.5246) (Classificare l'azione geologica delle onde in 551.36) > 551.4637 Tsunami (onde di marea, onde di maremoto) 500 Scienze naturali e Matematica > 550 Scienze della Terra > 554 Scienze della terra – Europa (Classificare qui la Geologia, i rilevamenti geologici, la stratigrafia dell’Europa) > 554.5 Scienze della Terra – Italia (Classificare qui la Geologia, i rilevamenti geologici, la stratigrafia dell’Italia) > 554.53 Scienze della Terra – Veneto (Classificare qui la Geologia, i rilevamenti geologici, la stratigrafia del Veneto) > 554.539 Scienze della Terra – Friuli Venezia Giulia (Classificare qui la Geologia, i rilevamenti geologici, la stratigrafia del Friuli Venezia Giulia)
Depositing User:	Users 66 not found.
Date Deposited:	09 Jul 2012 12:22
Last Modified:	09 Jul 2012 12:22
URI:	http://eprints.bice.rm.cnr.it/id/eprint/3626

Actions (login required)

View Item