Mass fux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe
We investigate the timescales of the horizontal mass flux decay of wind remobilised volcanic particles in Argentina, associated with the tephra-fallout deposit produced by the 2011–2012 Cordón Caulle (Chile) eruption. Particle removal processes are controlled by complex interactions of meteorological conditions, surface properties and particle depletion with time. We find that ash remobilisation follows a two-phase exponential decay with specific timescales for the initial input of fresh ash (1–74 days) and the following soil stabilisation processes (3–52 months). The characteristic timescales as a function of particle size shows two minimum values, identified for sizes around 2 and 19–37 μ m, suggesting that these size-range particles are remobilised more easily, due to the interaction between saltation and suspension-induced processes. We find that in volcanic regions, characterised by a sudden release and a subsequent depletion of particles, the availability of wind-erodible particles plays a major role due to compaction and removal of fine particles. We propose, therefore, a simple and reproducible empirical model to describe the mass flux decay of remobilised ash in a supply-limited environment. This methodology represents an innovative approach to link field measurements of multi-sized and supply-limited deposits with saltation erosion theory.
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Springer Nature
2020-09
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Subjects: | Cenizas, Materiales Volcánicos, Tamaño de la Partícula, Viento, Erupciones Volcánicas, Ashes, Volcanic Materials, Particle size, Wind, Volcanic Eruptions, Remobilisation, Mass Flux Decay, Cordón Caulle, Región Patagónica, |
Online Access: | http://hdl.handle.net/20.500.12123/14969 https://www.nature.com/articles/s41598-020-71022-w https://doi.org/10.1038/s41598-020-71022-w |
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oai:localhost:20.500.12123-149692023-08-22T11:21:50Z Mass fux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe Dominguez, Lucia Rossi, Eduardo Mingari, Leonardo Bonadonna, Costanza Forte, Pablo Brian Panebianco, Juan Esteban Bran, Donaldo Eduardo Cenizas Materiales Volcánicos Tamaño de la Partícula Viento Erupciones Volcánicas Ashes Volcanic Materials Particle size Wind Volcanic Eruptions Remobilisation Mass Flux Decay Cordón Caulle Región Patagónica We investigate the timescales of the horizontal mass flux decay of wind remobilised volcanic particles in Argentina, associated with the tephra-fallout deposit produced by the 2011–2012 Cordón Caulle (Chile) eruption. Particle removal processes are controlled by complex interactions of meteorological conditions, surface properties and particle depletion with time. We find that ash remobilisation follows a two-phase exponential decay with specific timescales for the initial input of fresh ash (1–74 days) and the following soil stabilisation processes (3–52 months). The characteristic timescales as a function of particle size shows two minimum values, identified for sizes around 2 and 19–37 μ m, suggesting that these size-range particles are remobilised more easily, due to the interaction between saltation and suspension-induced processes. We find that in volcanic regions, characterised by a sudden release and a subsequent depletion of particles, the availability of wind-erodible particles plays a major role due to compaction and removal of fine particles. We propose, therefore, a simple and reproducible empirical model to describe the mass flux decay of remobilised ash in a supply-limited environment. This methodology represents an innovative approach to link field measurements of multi-sized and supply-limited deposits with saltation erosion theory. EEA Bariloche Fil: Dominguez, Lucia. University of Geneva. Department of Earth Sciences; Suiza Fil: Rossi, Eduardo. University of Geneva. Department of Earth Sciences; Suiza Fil: Mingari, Leonardo. Barcelona Supercomputing Center; España Fil: Bonadonna, Costanza. University of Geneva. Department of Earth Sciences; Suiza Fil: Forte, Pablo Brian. Universidad de Buenos Aires. Instituto de Estudios Andinos; Argentina Fil: Forte, Pablo Brian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Panebianco, Juan Esteban. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales; Argentina Fil: Panebianco, Juan Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Bran, Donaldo Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina 2023-08-22T11:13:13Z 2023-08-22T11:13:13Z 2020-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/14969 https://www.nature.com/articles/s41598-020-71022-w 2045-2322 https://doi.org/10.1038/s41598-020-71022-w eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Springer Nature Scientific Reports 10 : 14456 (2020) |
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Cenizas Materiales Volcánicos Tamaño de la Partícula Viento Erupciones Volcánicas Ashes Volcanic Materials Particle size Wind Volcanic Eruptions Remobilisation Mass Flux Decay Cordón Caulle Región Patagónica Cenizas Materiales Volcánicos Tamaño de la Partícula Viento Erupciones Volcánicas Ashes Volcanic Materials Particle size Wind Volcanic Eruptions Remobilisation Mass Flux Decay Cordón Caulle Región Patagónica |
spellingShingle |
Cenizas Materiales Volcánicos Tamaño de la Partícula Viento Erupciones Volcánicas Ashes Volcanic Materials Particle size Wind Volcanic Eruptions Remobilisation Mass Flux Decay Cordón Caulle Región Patagónica Cenizas Materiales Volcánicos Tamaño de la Partícula Viento Erupciones Volcánicas Ashes Volcanic Materials Particle size Wind Volcanic Eruptions Remobilisation Mass Flux Decay Cordón Caulle Región Patagónica Dominguez, Lucia Rossi, Eduardo Mingari, Leonardo Bonadonna, Costanza Forte, Pablo Brian Panebianco, Juan Esteban Bran, Donaldo Eduardo Mass fux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe |
description |
We investigate the timescales of the horizontal mass flux decay of wind remobilised volcanic particles in Argentina, associated with the tephra-fallout deposit produced by the 2011–2012 Cordón Caulle (Chile) eruption. Particle removal processes are controlled by complex interactions of meteorological conditions, surface properties and particle depletion with time. We find that ash remobilisation follows a two-phase exponential decay with specific timescales for the initial input of fresh ash (1–74 days) and the following soil stabilisation processes (3–52 months). The characteristic timescales as a function of particle size shows two minimum values, identified for sizes around 2 and 19–37 μ
m, suggesting that these size-range particles are remobilised more easily, due to the interaction between saltation and suspension-induced processes. We find that in volcanic regions, characterised by a sudden release and a subsequent depletion of particles, the availability of wind-erodible particles plays a major role due to compaction and removal of fine particles. We propose, therefore, a simple and reproducible empirical model to describe the mass flux decay of remobilised ash in a supply-limited environment. This methodology represents an innovative approach to link field measurements of multi-sized and supply-limited deposits with saltation erosion theory. |
format |
info:ar-repo/semantics/artículo |
topic_facet |
Cenizas Materiales Volcánicos Tamaño de la Partícula Viento Erupciones Volcánicas Ashes Volcanic Materials Particle size Wind Volcanic Eruptions Remobilisation Mass Flux Decay Cordón Caulle Región Patagónica |
author |
Dominguez, Lucia Rossi, Eduardo Mingari, Leonardo Bonadonna, Costanza Forte, Pablo Brian Panebianco, Juan Esteban Bran, Donaldo Eduardo |
author_facet |
Dominguez, Lucia Rossi, Eduardo Mingari, Leonardo Bonadonna, Costanza Forte, Pablo Brian Panebianco, Juan Esteban Bran, Donaldo Eduardo |
author_sort |
Dominguez, Lucia |
title |
Mass fux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe |
title_short |
Mass fux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe |
title_full |
Mass fux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe |
title_fullStr |
Mass fux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe |
title_full_unstemmed |
Mass fux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe |
title_sort |
mass fux decay timescales of volcanic particles due to aeolian processes in the argentinian patagonia steppe |
publisher |
Springer Nature |
publishDate |
2020-09 |
url |
http://hdl.handle.net/20.500.12123/14969 https://www.nature.com/articles/s41598-020-71022-w https://doi.org/10.1038/s41598-020-71022-w |
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