A lava flow simulation model using a GIS as a contribution for hazard assessment at Fogo island, Cabo Verde

Quental, Lídia; Soares, Amilcar; Gaspar, João Luís

http://hdl.handle.net/10400.9/4070

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Authors

Quental, Lídia

Soares, Amilcar

Gaspar, João Luís

Abstract(s)

ABSTRACT: A basic model for lava flows simulation is implemented and applied to the Fogo volcano using as a test the April 95 eruption; the objective is to evaluate and control future occurrences. Using the techniques of Cellular Automata (CA) the lava is considered a dynamic system varying in time and space. A Digital Terrain Model (DTM) using discrete cells of 15 metres is created in a Geographic Information System (GIS). A stochastic simulation process is used to establish the lava flow. The set of simulated images over time periods, allows evaluation of the uncertainty of the spatial dispersion of lava, according to its properties, and elaboration of hazard mapping.

Keywords

Risk management Simulation model Geographic information systems GIS Cabo Verde

URI

http://hdl.handle.net/10400.9/4070

Citation

Quental, Lídia... [et.al.] - A lava flow simulation model using a GIS as a contribution for hazard assessment at Fogo island, Cabo Verde. In: Vulcânica - Revista Portuguesa de Vulcanologia, 2003, vol. I, Special Issue-Volcanic Hazard Assess and Risk, p. 149-154

Publisher

IVAR - Instituto de Investigação em Vulcanologia e Avaliação de Riscos

Collections

SIGG - Artigos em revistas nacionais

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