Modeling lahar behavior and hazards

V Manville, JJ Major, SA Fagents - Modeling volcanic processes …, 2013 - books.google.com
Lahars are highly mobile mixtures of water and sediment of volcanic origin that are capable
of traveling tens to> 100 km at speeds exceeding tens of km hrrl. Such flows are among the …

Chapter 10 The effect of topography on ash-cloud surge generation and propagation

SE Ogburn, ES Calder, PD Cole… - Geological Society …, 2014 - lyellcollection.org
The relationship between valley morphology and ash-cloud surge development for 12
pyroclastic density currents (PDCs) at Soufrière Hills Volcano (SHV), Montserrat is …

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

ER Stefanescu, M Bursik… - … of the Royal …, 2012 - royalsocietypublishing.org
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 …

Probabilistic quantification of hazards: a methodology using small ensembles of physics-based simulations and statistical surrogates

MJ Bayarri, JO Berger, ES Calder… - International Journal …, 2015 - dl.begellhouse.com
This paper presents a novel approach to assessing the hazard threat to a locale due to a
large volcanic avalanche. The methodology combines:(i) mathematical modeling of volcanic …

Numerical simulation of block-and-ash flows for different eruptive scenarios of the Tacaná Volcanic Complex, México-Guatemala

R Vázquez, JL Macías, JL Arce, G Cisneros… - Journal of Volcanology …, 2019 - Elsevier
Abstract The Tacaná Volcanic Complex (TVC), shared by México and Guatemala, is
considered an active volcano that resumed phreatic explosions in 1949 and 1986. The TVC …

Development and implementation of Bayesian computer model emulators

D Lopes - 2011 - search.proquest.com
Our interest is the risk assessment of rare natural hazards, such as large volcanic pyroclastic
flows. Since catastrophic consequences of volcanic flows are rare events, our analysis …

Impact of DEM uncertainty on TITAN2D flow model output, Galeras Volcano, Colombia

ER Stefanescu, MI Bursik, G Cordoba, AK Patra… - 2010 - scholarsarchive.byu.edu
In this paper we study the impact of errors and uncertainties in digital elevation modelson
the analysis of hazardous mass flows at Galeras volcano in Colombia. The increasing use …

Multilevel methods for sparse representation of topographical data

P Shekhar, A Patra, ER Stefanescu - Procedia Computer Science, 2016 - Elsevier
With the onset of the data age, more and more of research is being carried out on
construction of efficient algorithms for handling Big Data sets. The current work proposes a …

Multilevel-multiscale ensembles for uncertainty quantification with application to geophysical models

ER Stefanescu - 2014 - search.proquest.com
Disaster response managers routinely use numerical modeling to assist in hazard response
and mitigation making the reliability and the accuracy of these models crucial to the decision …