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(Article of periodic en Anglais - 2013)

Document title

Two-dimensional nonlinear diffusive numerical simulation of geomorphic modifications to cinder cones

Authors(s) and Affiliation(s)

DE MICHIELI VITTURI M. (1) ; ARROWSMITH J.R. (2) ;
(1) Ist. Nazionale di Geofisica e Vulcanologia, Pisa, ITALIE
(2) School of Earth and Space Exploration, Arizona State Univ., Tempe, ETATS-UNIS

Abstract

The temporal evolution of simple landforms such as cinder cones by nonlinear diffusive processes is studied through the use of a new 2D numerical model using well-established and accurate numerical mathematics and high-resolution digital elevation models (DEMs). The high accuracy and efficient numerical implementation are documented in the paper and the MATLAB toolkit developed is used to solve for the developmentof an initial 2D cone form. To test the new formulation for the nonlinear term, the effect of variable diffusivity k and the numerical schemes implemented, the AA. apply the model to cinder cones built on the flanks of Mount Etna in 2001 and 2002–2003. They explore the effects of DEM resolution with data from the 2001 cone and the utility of spatially variable diffusivity to explain the variation in erosion measured by differencing repeat light detection and ranging (LIDAR) surveys gathered in 2004 and 2007 over the 2002–2003 cone complex

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2013, vol. 38, no12 [pp. 1432-1443]

Bibliographic references : 1 p.

Collation : 14 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3423

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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