The dynamics of large silicic systems from satellite remote sensing observations: the intriguing case of Domuyo volcano, Argentina.

Scientific Reports
Paul LundgrenMichael Aivazis

Abstract

Silicic magmatic systems are the most dangerous volcanoes on Earth, capable of large and catastrophic eruptions, yet their low eruptive frequency makes it challenging to interpret their short-term unrest. Here we present a decade-plus analysis that integrates, for the first time, time series of satellite interferometric synthetic aperture radar (InSAR) surface deformation and satellite thermal infrared edifice-scale surface warming at a large silicic system: Domuyo volcano, in Argentina. We find that deformation and warming are highly correlated, and depending on the sign and lag between the time series, either shallow sealing or magma influx could drive Domuyo's ongoing inflation (~ 0.15 m/year; from an InSAR-derived tabular source, ~ 11 × 8 × 1 km; ~ 6.5 km depth; ~ 0.037 km3/year volume-change rate) and warming (0.3-0.4 °C/year). This study shows the potential that combined satellite surface deformation and edifice-scale surface warming time series have on assessing the physical mechanisms of silicic volcanic systems and for constraining deterministic models.

References

Mar 9, 2000·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·C W Chen, H A Zebker
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Jan 26, 2018·Scientific Reports·Társilo GironaCorentin Caudron

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Citations

Jan 6, 2021·Proceedings of the National Academy of Sciences of the United States of America·Mara H ReedMichael Manga

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Methods Mentioned

BETA
infrared spectroscopy
lava

Software Mentioned

HOTVOLC
ISCE
PAC
RADARSAT
SNAPHU
SEVIRI
InSAR
MODVOLC
InSAR Scientific Computing Environment ( ISCE ) package
cutanddisplace

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