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High effusion rates of the Cordón Caulle 2011–2012 eruption (Southern Andes) and their relation with the quasi‐harmonic tremor
Author(s) -
Bertin D.,
Lara L. E.,
Basualto D.,
Amigo Á.,
Cardona C.,
Franco L.,
Gil F.,
Lazo J.
Publication year - 2015
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2015gl064624
Subject(s) - geology , seismology , explosive material , signal (programming language) , cord , amplitude , harmonic , medicine , acoustics , geography , physics , surgery , computer science , archaeology , quantum mechanics , programming language
High effusion rates of intermediate‐to‐high‐silica lavas seem to be less uncommon than previously thought, in particular during their initial eruptive stages. In this study, we report satellite‐based time‐averaged discharge rates for the 2011–2012 effusive phase at Cordón Caulle, which are well correlated with the evolution of the quasi‐harmonic tremor, the most significant seismic signal after the initial explosive stage. Such a correspondence could become a key method for detection of the onset of effusive phases, especially in remote and/or very cloudy areas, supplying an additional tool for effective warnings and near‐real‐time hazard appraisal.