Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
Nat. Hazards Earth Syst. Sci., 12, 1229-1233, 2012
http://www.nat-hazards-earth-syst-sci.net/12/1229/2012/
doi:10.5194/nhess-12-1229-2012
© Author(s) 2012. This work is distributed
under the Creative Commons Attribution 3.0 License.
Brief communication
27 Apr 2012
Brief Communication "Rain effect on the load of tephra deposits"
G. Macedonio1 and A. Costa1,2 1Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Vesuviano, Napoli, Italy
2Environmental Systems Science Center, University of Reading, Reading, UK
Abstract. Accumulation of tephra fallout produced during explosive eruptions can cause roof collapses in areas near the volcano, when the weight of the deposit exceeds some threshold value that depends on the quality of buildings. The additional loading of water that remains trapped in the tephra deposits due to rainfall can contribute to increasing the loading of the deposits on the roofs. Here we propose a simple approach to estimate an upper bound for the contribution of rain to the load of pyroclastic deposits that is useful for hazard assessment purposes. As case study we present an application of the method in the area of Naples, Italy, for a reference eruption from Vesuvius volcano.

Citation: Macedonio, G. and Costa, A.: Brief Communication "Rain effect on the load of tephra deposits", Nat. Hazards Earth Syst. Sci., 12, 1229-1233, doi:10.5194/nhess-12-1229-2012, 2012.
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