Synthetic benchmarking of concentrated pyroclastic current models
Synthetic benchmarking of concentrated pyroclastic current models
复制标题
集中火山碎屑流模型的综合基准测试
DOI:
10.1007/s00445-021-01491-y
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发表时间:
2021
影响因子:
3.5
通讯作者:
Kelfoun, K.
中科院分区:
文献类型:
--
作者:
Gueugneau, V.;Charbonnier, S.;Esposti Ongaro, T.;de’ Michieli Vitturi, M;Peruzzetto, M.;Mangeney, A.;Bouchut, F.;Patra, A.;Kelfoun, K.
Validation and benchmarking of pyroclastic current (PC) models is required to evaluate their performance and their reliability for hazard assessment. Here, we present results of a benchmarking initiative built to evaluate four models commonly used to assess concentrated PC hazard: SHALTOP, TITAN2D, VolcFlow, and IMEX_SfloW2D. The benchmark focuses on the simulation of channelized flows with similar source conditions over five different synthetic channel geometries: (1) a flat incline plane, (2) a channel with a sharp 45° bend, (3) a straight channel with a break-in-slope, (4) a straight channel with an obstacle, and (5) a straight channel with a constriction. Several outputs from 60 simulations using three different initial volume fluxes were investigated to evaluate the performance of the four models when simulating valley-confined PC kinematics, including overflows induced by topographic changes. Quantification of the differences obtained between model outputs att= 100 s allowed us to identify (1) issues with the Voellmy-Salm implementation of TITAN2D and (2) small discrepancies between the three other codes that are either due to various curvature and velocity formulations and/or numerical frameworks. Benchmark results were also in agreement with field observations of natural PCs: a sudden change in channel geometries combined with a high-volume flux is key to generate overflows. The synthetic benchmarks proved to be useful for evaluating model performance, needed for PC hazard assessment. The overarching goal is to provide an interpretation framework for volcanic mass flow hazard assessment studies to the geoscience community.
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DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
J. Dufek;T. E. Ongaro;O. Roche
通讯作者:
O. Roche
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
R. Sulpizio;P. Dellino;D. Doronzo;D. Sarocchi
通讯作者:
D. Sarocchi
DOI:
10.1029/2017jb015383
发表时间:
2018
期刊:
Journal of Geophysical Research: Solid Earth
影响因子:
--
作者:
Pablo Tierz;E. R. Stefanescu;L. Sandri;R. Sulpizio;G. Valentine;W. Marzocchi;A. Patra
通讯作者:
A. Patra
影响因子:
3.5
作者:
W. Marzocchi;M. Bebbington
通讯作者:
M. Bebbington
影响因子:
3.7
作者:
L. Capra;V. Manea;M. Manea;G. Norini
通讯作者:
G. Norini