Quantification of Volcano Deformation Caused by Volatile Accumulation and Release

A. Spang; M. Burton; B. J.P. Kaus; F. Sigmundsson

doi:10.1029/2021GL097502

Quantification of Volcano Deformation Caused by Volatile Accumulation and Release

A. Spang^*, M. Burton, B. J.P. Kaus, F. Sigmundsson

^*Corresponding author for this work

Science Institute

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Crustal-stored magma reservoirs contain exsolved volatiles which accumulate in the reservoir roof, exerting a buoyancy force on the crust. This produces surface uplift and sudden loss of volatiles through eruption results in syn-eruptive subsidence. Here, we present three-dimensional, visco-elasto-plastic, numerical modeling results which quantify the ground deformation arising from the growth and release of a volatile reservoir. Deformation is mostly independent of crustal thermal distribution and volatile reservoir shape, but is a function of volatile volume, density and depth and crustal rigidity. We present a scaling law for the volatiles' contribution to syn-eruptive subsidence and show this contributes ∼20% of the observed subsidence associated with the 2015 Calbuco eruption. Our results highlight the key role that volatile-driven buoyancy can have in volcano deformation, show a new link between syn-eruptive degassing and deflation, and highlight that shallow volatile accumulation and release may have a significant impact on ground deformation of volcanoes.

Original language	English
Article number	e2021GL097502
Journal	Geophysical Research Letters
Volume	49
Issue number	10
DOIs	https://doi.org/10.1029/2021GL097502
Publication status	Published - 28 May 2022

Bibliographical note

Funding Information:
The authors thank two anonymous reviewers for their help in improving the quality of the manuscript. This study was funded by the European Research Council through the MAGMA project, ERC Consolidator Grant # 771143. We thank Fabio Arzilli for his contribution to our estimations of the volatile budget. We used perceptually uniform colormaps to prevent optical data distortion (Crameri, 2018). Parts of this research were conducted using the supercomputer Mogon II and/or advisory services offered by Johannes Gutenberg University Mainz (hpc.uni-mainz.de), which is a member of the AHRP (Alliance for High Performance Computing in Rhineland Palatinate, www.ahrp.info) and the Gauss Alliance e.V. Open Access funding enabled and organized by Projekt DEAL.

Funding Information:
The authors thank two anonymous reviewers for their help in improving the quality of the manuscript. This study was funded by the European Research Council through the MAGMA project, ERC Consolidator Grant # 771143. We thank Fabio Arzilli for his contribution to our estimations of the volatile budget. We used perceptually uniform colormaps to prevent optical data distortion (Crameri, 2018 ). Parts of this research were conducted using the supercomputer Mogon II and/or advisory services offered by Johannes Gutenberg University Mainz ( hpc.uni-mainz.de ), which is a member of the AHRP (Alliance for High Performance Computing in Rhineland Palatinate, www.ahrp.info ) and the Gauss Alliance e.V. Open Access funding enabled and organized by Projekt DEAL.

Publisher Copyright:
© 2022 The Authors.

Other keywords

3D modeling
buoyancy
Calbuco
magmatic gases
scaling analysis
volcanic uplift

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@article{d6bd7b3d156348549836df18f3374f64,

title = "Quantification of Volcano Deformation Caused by Volatile Accumulation and Release",

abstract = "Crustal-stored magma reservoirs contain exsolved volatiles which accumulate in the reservoir roof, exerting a buoyancy force on the crust. This produces surface uplift and sudden loss of volatiles through eruption results in syn-eruptive subsidence. Here, we present three-dimensional, visco-elasto-plastic, numerical modeling results which quantify the ground deformation arising from the growth and release of a volatile reservoir. Deformation is mostly independent of crustal thermal distribution and volatile reservoir shape, but is a function of volatile volume, density and depth and crustal rigidity. We present a scaling law for the volatiles' contribution to syn-eruptive subsidence and show this contributes ∼20% of the observed subsidence associated with the 2015 Calbuco eruption. Our results highlight the key role that volatile-driven buoyancy can have in volcano deformation, show a new link between syn-eruptive degassing and deflation, and highlight that shallow volatile accumulation and release may have a significant impact on ground deformation of volcanoes.",

keywords = "3D modeling, buoyancy, Calbuco, magmatic gases, scaling analysis, volcanic uplift",

author = "A. Spang and M. Burton and Kaus, {B. J.P.} and F. Sigmundsson",

note = "Funding Information: The authors thank two anonymous reviewers for their help in improving the quality of the manuscript. This study was funded by the European Research Council through the MAGMA project, ERC Consolidator Grant # 771143. We thank Fabio Arzilli for his contribution to our estimations of the volatile budget. We used perceptually uniform colormaps to prevent optical data distortion (Crameri, 2018). Parts of this research were conducted using the supercomputer Mogon II and/or advisory services offered by Johannes Gutenberg University Mainz (hpc.uni-mainz.de), which is a member of the AHRP (Alliance for High Performance Computing in Rhineland Palatinate, www.ahrp.info) and the Gauss Alliance e.V. Open Access funding enabled and organized by Projekt DEAL. Funding Information: The authors thank two anonymous reviewers for their help in improving the quality of the manuscript. This study was funded by the European Research Council through the MAGMA project, ERC Consolidator Grant # 771143. We thank Fabio Arzilli for his contribution to our estimations of the volatile budget. We used perceptually uniform colormaps to prevent optical data distortion (Crameri, 2018 ). Parts of this research were conducted using the supercomputer Mogon II and/or advisory services offered by Johannes Gutenberg University Mainz ( hpc.uni-mainz.de ), which is a member of the AHRP (Alliance for High Performance Computing in Rhineland Palatinate, www.ahrp.info ) and the Gauss Alliance e.V. Open Access funding enabled and organized by Projekt DEAL. Publisher Copyright: {\textcopyright} 2022 The Authors.",

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doi = "10.1029/2021GL097502",

language = "English",

volume = "49",

journal = "Geophysical Research Letters",

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AU - Spang, A.

AU - Burton, M.

AU - Kaus, B. J.P.

AU - Sigmundsson, F.

N1 - Funding Information: The authors thank two anonymous reviewers for their help in improving the quality of the manuscript. This study was funded by the European Research Council through the MAGMA project, ERC Consolidator Grant # 771143. We thank Fabio Arzilli for his contribution to our estimations of the volatile budget. We used perceptually uniform colormaps to prevent optical data distortion (Crameri, 2018). Parts of this research were conducted using the supercomputer Mogon II and/or advisory services offered by Johannes Gutenberg University Mainz (hpc.uni-mainz.de), which is a member of the AHRP (Alliance for High Performance Computing in Rhineland Palatinate, www.ahrp.info) and the Gauss Alliance e.V. Open Access funding enabled and organized by Projekt DEAL. Funding Information: The authors thank two anonymous reviewers for their help in improving the quality of the manuscript. This study was funded by the European Research Council through the MAGMA project, ERC Consolidator Grant # 771143. We thank Fabio Arzilli for his contribution to our estimations of the volatile budget. We used perceptually uniform colormaps to prevent optical data distortion (Crameri, 2018 ). Parts of this research were conducted using the supercomputer Mogon II and/or advisory services offered by Johannes Gutenberg University Mainz ( hpc.uni-mainz.de ), which is a member of the AHRP (Alliance for High Performance Computing in Rhineland Palatinate, www.ahrp.info ) and the Gauss Alliance e.V. Open Access funding enabled and organized by Projekt DEAL. Publisher Copyright: © 2022 The Authors.

PY - 2022/5/28

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N2 - Crustal-stored magma reservoirs contain exsolved volatiles which accumulate in the reservoir roof, exerting a buoyancy force on the crust. This produces surface uplift and sudden loss of volatiles through eruption results in syn-eruptive subsidence. Here, we present three-dimensional, visco-elasto-plastic, numerical modeling results which quantify the ground deformation arising from the growth and release of a volatile reservoir. Deformation is mostly independent of crustal thermal distribution and volatile reservoir shape, but is a function of volatile volume, density and depth and crustal rigidity. We present a scaling law for the volatiles' contribution to syn-eruptive subsidence and show this contributes ∼20% of the observed subsidence associated with the 2015 Calbuco eruption. Our results highlight the key role that volatile-driven buoyancy can have in volcano deformation, show a new link between syn-eruptive degassing and deflation, and highlight that shallow volatile accumulation and release may have a significant impact on ground deformation of volcanoes.

AB - Crustal-stored magma reservoirs contain exsolved volatiles which accumulate in the reservoir roof, exerting a buoyancy force on the crust. This produces surface uplift and sudden loss of volatiles through eruption results in syn-eruptive subsidence. Here, we present three-dimensional, visco-elasto-plastic, numerical modeling results which quantify the ground deformation arising from the growth and release of a volatile reservoir. Deformation is mostly independent of crustal thermal distribution and volatile reservoir shape, but is a function of volatile volume, density and depth and crustal rigidity. We present a scaling law for the volatiles' contribution to syn-eruptive subsidence and show this contributes ∼20% of the observed subsidence associated with the 2015 Calbuco eruption. Our results highlight the key role that volatile-driven buoyancy can have in volcano deformation, show a new link between syn-eruptive degassing and deflation, and highlight that shallow volatile accumulation and release may have a significant impact on ground deformation of volcanoes.

KW - 3D modeling

KW - buoyancy

KW - Calbuco

KW - magmatic gases

KW - scaling analysis

KW - volcanic uplift

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U2 - 10.1029/2021GL097502

DO - 10.1029/2021GL097502

M3 - Article

AN - SCOPUS:85131300477

SN - 0094-8276

VL - 49

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 10

M1 - e2021GL097502

ER -

Quantification of Volcano Deformation Caused by Volatile Accumulation and Release

Abstract

Bibliographical note

Other keywords

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