dc.creatorDominguez, Lucia
dc.creatorRossi, Eduardo
dc.creatorMingari, Leonardo
dc.creatorBonadonna, Costanza
dc.creatorForte, Pablo Brian
dc.creatorPanebianco, Juan Esteban
dc.creatorBran, Donaldo
dc.date.accessioned2020-12-22T12:57:08Z
dc.date.accessioned2022-10-15T05:28:45Z
dc.date.available2020-12-22T12:57:08Z
dc.date.available2022-10-15T05:28:45Z
dc.date.created2020-12-22T12:57:08Z
dc.date.issued2020-09
dc.identifierDominguez, Lucia; Rossi, Eduardo; Mingari, Leonardo; Bonadonna, Costanza; Forte, Pablo Brian; et al.; Mass flux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe; Nature; Scientific Reports; 10; 1; 9-2020; 1-15
dc.identifier2045-2322
dc.identifierhttp://hdl.handle.net/11336/121015
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4349793
dc.description.abstractWe 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.
dc.languageeng
dc.publisherNature
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41598-020-71022-w
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/s41598-020-71022-w
dc.rightshttps://creativecommons.org/licenses/by/2.5/ar/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectASH REMOBILISATION
dc.subjectCORDÓN CAULLE
dc.subjectMASS FLUX DECAY
dc.titleMass flux decay timescales of volcanic particles due to aeolian processes in the Argentinian Patagonia steppe
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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