Excess degassing drives long-term volcanic unrest at Nevado del Ruiz

This study combines volcanic gas compositions, SO 2 flux and satellite thermal data collected at Nevado del Ruiz between 2018 and 2021. We find the Nevado del Ruiz plume to have exhibited relatively steady, high CO 2 compositions (avg. CO 2 /S T ratios of 5.4 ± 1.9) throughout. Our degassing models...

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Veröffentlicht in:	Scientific reports 2024-01, Vol.14 (1), p.1230-1230, Article 1230
Hauptverfasser:	Lages, João, Chacón, Zoraida, Ramirez, Julian, Aiuppa, Alessandro, Arellano, Santiago, Bitetto, Marcello, Peña, Julián O., Coppola, Diego, Laiolo, Marco, Massimetti, Francesco, Castaño, Lina, Laverde, Carlos, Tamburello, Giancarlo, Giudice, Gaetano, Lopez, Cristian
Format:	Artikel
Sprache:	eng
Schlagworte:	704/2151/209 704/2151/598 Bubbles Carbon dioxide Degassing Gases Humanities and Social Sciences Lava Magma multidisciplinary Permeability Ratios Science Science (multidisciplinary) Sulfur dioxide Volcanic gases Volcanoes
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Zusammenfassung:	This study combines volcanic gas compositions, SO 2 flux and satellite thermal data collected at Nevado del Ruiz between 2018 and 2021. We find the Nevado del Ruiz plume to have exhibited relatively steady, high CO 2 compositions (avg. CO 2 /S T ratios of 5.4 ± 1.9) throughout. Our degassing models support that the CO 2 /S T ratio variability derives from volatile exsolution from andesitic magma stored in the 1–4 km depth range. Separate ascent of CO 2 -rich gas bubbles through shallow (
ISSN:	2045-2322 2045-2322
DOI:	10.1038/s41598-024-51380-5