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The 2012 Eruption

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Copahue Volcano

Part of the book series: Active Volcanoes of the World ((AVOLCAN))

Abstract

This contribution is a detailed description of the precursory activity and the eruptive events that took place during July and December 2012 at Copahue volcano, based on field observations and geophysical and geochemical monitoring. After the Mw 8.8 Chilean earthquake on February 27th 2010, several signals of anomalous behavior were detected at Copahue, revealing the instability of the volcanic system. Starting from July 2012 a phreatic activity occurred with emission of a low amount of material mainly constituted by rocks from the volcanic conduit and sediments from the bottom of the crater lake. Seismic activity and degassing continued until December 22nd when the eruption started with an opening phreatic event that rapidly evolved to a phreatomagmatic, and finally a magmatic eruption.

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Author information

Authors and Affiliations

  1. LESVA, IIPG, Universidad Nacional de Río Negro, Roca 1242, 8332, General Roca, Argentina

    A. Caselli

  2. GESVA-IDEAN, Dpto. Cs. Geológicas, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Pab.2, 1428, Buenos Aires, Argentina

    M. Agusto, M. L. Velez, P. Forte, C. Bengoa & J. M. Albite

  3. CONICET, Consejo Nacional de Investigaciones Científicas y Tecnológicas, Buenos Aires, Argentina

    M. Agusto, M. L. Velez, R. Daga & J. M. Albite

  4. Department of Biology, Geology and Environmental Sciences, Piazza Porta San Donato, 1, 40126, Bologna, Italy

    B. Capaccioni

  5. Laboratorio de Análisis por Activación Neutrónica, Centro Atómico Bariloche, CNEA, Av. Bustillo km 9.5, 8400, Bariloche, Argentina

    R. Daga

Authors
  1. A. Caselli
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  2. M. Agusto
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  3. M. L. Velez
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  4. P. Forte
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  5. C. Bengoa
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  6. R. Daga
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  7. J. M. Albite
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  8. B. Capaccioni
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Corresponding author

Correspondence to A. Caselli .

Editor information

Editors and Affiliations

  1. Earth Sciences, University of Florence, Florence, Italy

    Franco Tassi

  2. Earth Sciences, University of Florence, Florence, Italy

    Orlando Vaselli

  3. National University of Rio Negro, General Roca, Rio Negro, Argentina

    Alberto Tomas Caselli

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Caselli, A. et al. (2016). The 2012 Eruption. In: Tassi, F., Vaselli, O., Caselli, A. (eds) Copahue Volcano. Active Volcanoes of the World. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-48005-2_4

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