Digital elevation model uncertainty and hazard analysis using a geophysical flow model

14Citations
Citations of this article
16Readers
Mendeley users who have this article in their library.

Abstract

This paper describes a new methodology to quantify the variation in the output of a computational fluid dynamics model for block and ash flows, when the digital elevation model (DEM) of the terrain and other inputs are given as a range of possible values with a prescribed uncertainty. Integrating these variations in the possible flows as a function of input uncertainties provides well-defined hazard probabilities at specific locations, i.e. a hazard map. Earlier work provided a methodology for assessing hazards based on variations in flow initiation and friction parameters. This paper extends this approach to include the effect of terrain error and uncertainty. The results are based on potential flows at Mammoth Mountain, CA, and Galeras Volcano, Colombia. The analysis establishes the soundness of the approach and the effect of including the uncertainty in DEMs in the construction of probabilistic hazard maps. © 2012 The Royal Society.

Cite

CITATION STYLE

APA

Stefanescu, E. R., Bursik, M., Cordoba, G., Dalbey, K., Jones, M. D., Patra, A. K., … Sheridan, M. F. (2012). Digital elevation model uncertainty and hazard analysis using a geophysical flow model. In Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences (Vol. 468, pp. 1543–1563). Royal Society. https://doi.org/10.1098/rspa.2011.0711

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free