Modeling lava flow propagation over a flat landscape by using MrLavaLoba: the case of the 2014–2015 eruption at Holuhraun, Iceland

During the emplacement of the 2014-2015 lava flow in Holuhraun (Iceland) a new code for the simulation of lava flows (MrLavaLoba) was developed and tested. MrLavaLoba is a probabilistic code which derives the area likely to be inundated and the thickness of the final lava deposit. The flow field in...

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Bibliographic Details
Published in:Annals of Geophysics
Main Authors: Tarquini, Simone, de' Michieli Vitturi, Mattia, Jensen, Esther Hliðar, Pedersen, Gro, Barsotti, Sara, Coppola, Diego, Pfeffer, Melissa
Other Authors: Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Pisa, Pisa, Italia, #PLACEHOLDER_PARENT_METADATA_VALUE#
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
lava flow
Holuhraun
04.08. Volcanology
05.01. Computational geophysics
Iceland
Online Access:http://hdl.handle.net/2122/12271
https://doi.org/10.4401/ag-7812
Description
Summary:During the emplacement of the 2014-2015 lava flow in Holuhraun (Iceland) a new code for the simulation of lava flows (MrLavaLoba) was developed and tested. MrLavaLoba is a probabilistic code which derives the area likely to be inundated and the thickness of the final lava deposit. The flow field in Holuhraun progressed through a fairly flat floodplain, and the initial limited availability of topographic data was challenging, forcing us to develop specific modeling strategies. The development of the code, as well as simulation tests, continued after the end of the eruption, and latest results largely benefitted from the availability of improved topographic data. MrLavaLoba simulations of the Holuhraun scenario are compared with detailed observational analyses derived from the literature. The obtained results highlight that small-scale morphological features in the preemplacement topography can strongly influence the propagation of the flow. The distribution of the volume settling throughout the extension of the flow field turned out to be very important, and strongly affects the fit between the simulated and the real extent of the flow field. The performed analysis suggests that an improvement in the code should allow adaptable calibration during the course of the eruption in order to mimic different emplacement styles in different phases. Published VO228 5V. Processi eruttivi e post-eruttivi JCR Journal

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