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Ice-melt rates by steam condensation during explosive subglacial eruptions

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Ice-melt rates by steam condensation during explosive subglacial eruptions. / Woodcock, Duncan Charles; Gilbert, Jennifer Susan; Lane, Stephen John.
In: Journal of Geophysical Research: Solid Earth, Vol. 120, No. 2, 11.02.2015, p. 864-878.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Woodcock, DC, Gilbert, JS & Lane, SJ 2015, 'Ice-melt rates by steam condensation during explosive subglacial eruptions', Journal of Geophysical Research: Solid Earth, vol. 120, no. 2, pp. 864-878. https://doi.org/10.1002/2014JB011619

APA

Woodcock, D. C., Gilbert, J. S., & Lane, S. J. (2015). Ice-melt rates by steam condensation during explosive subglacial eruptions. Journal of Geophysical Research: Solid Earth, 120(2), 864-878. https://doi.org/10.1002/2014JB011619

Vancouver

Woodcock DC, Gilbert JS, Lane SJ. Ice-melt rates by steam condensation during explosive subglacial eruptions. Journal of Geophysical Research: Solid Earth. 2015 Feb 11;120(2):864-878. Epub 2015 Jan 14. doi: 10.1002/2014JB011619

Author

Woodcock, Duncan Charles ; Gilbert, Jennifer Susan ; Lane, Stephen John. / Ice-melt rates by steam condensation during explosive subglacial eruptions. In: Journal of Geophysical Research: Solid Earth. 2015 ; Vol. 120, No. 2. pp. 864-878.

Bibtex

@article{8def14f2ec6640609a3292e326256f98,
title = "Ice-melt rates by steam condensation during explosive subglacial eruptions",
abstract = "Subglacial volcanism melts cavities in the overlying ice. These cavities may be flooded with meltwater or they may be fully or partially drained. We quantify, for the first time, heat transfer rates by condensation of steam on the walls and roof of a fully or partially drained subglacial eruption cavity. Our calculations indicate that heat fluxes of up to 1 MW m−2 may be obtained when the bulk vapor in the cavity is in free convection. This is considerably smaller than heat fluxes inferred from ice penetration rates in recent subglacial eruptions. Forcing of the convection by momentum transfer from an eruption jet may allow heat fluxes of up to 2 MW m−2, consistent with values inferred for the Gj{\'a}lp 1996 subglacial eruption. Vapor-dominated cavities in which vapor-liquid equilibrium is maintained have thermal dynamic responses that are an order of magnitude faster than the equivalent flooded cavities.",
author = "Woodcock, {Duncan Charles} and Gilbert, {Jennifer Susan} and Lane, {Stephen John}",
note = "{\textcopyright}2015. American Geophysical Union. All Rights Reserved.",
year = "2015",
month = feb,
day = "11",
doi = "10.1002/2014JB011619",
language = "English",
volume = "120",
pages = "864--878",
journal = "Journal of Geophysical Research: Solid Earth",
issn = "2169-9356",
publisher = "Wiley-Blackwell",
number = "2",

}

RIS

TY - JOUR

T1 - Ice-melt rates by steam condensation during explosive subglacial eruptions

AU - Woodcock, Duncan Charles

AU - Gilbert, Jennifer Susan

AU - Lane, Stephen John

N1 - ©2015. American Geophysical Union. All Rights Reserved.

PY - 2015/2/11

Y1 - 2015/2/11

N2 - Subglacial volcanism melts cavities in the overlying ice. These cavities may be flooded with meltwater or they may be fully or partially drained. We quantify, for the first time, heat transfer rates by condensation of steam on the walls and roof of a fully or partially drained subglacial eruption cavity. Our calculations indicate that heat fluxes of up to 1 MW m−2 may be obtained when the bulk vapor in the cavity is in free convection. This is considerably smaller than heat fluxes inferred from ice penetration rates in recent subglacial eruptions. Forcing of the convection by momentum transfer from an eruption jet may allow heat fluxes of up to 2 MW m−2, consistent with values inferred for the Gjálp 1996 subglacial eruption. Vapor-dominated cavities in which vapor-liquid equilibrium is maintained have thermal dynamic responses that are an order of magnitude faster than the equivalent flooded cavities.

AB - Subglacial volcanism melts cavities in the overlying ice. These cavities may be flooded with meltwater or they may be fully or partially drained. We quantify, for the first time, heat transfer rates by condensation of steam on the walls and roof of a fully or partially drained subglacial eruption cavity. Our calculations indicate that heat fluxes of up to 1 MW m−2 may be obtained when the bulk vapor in the cavity is in free convection. This is considerably smaller than heat fluxes inferred from ice penetration rates in recent subglacial eruptions. Forcing of the convection by momentum transfer from an eruption jet may allow heat fluxes of up to 2 MW m−2, consistent with values inferred for the Gjálp 1996 subglacial eruption. Vapor-dominated cavities in which vapor-liquid equilibrium is maintained have thermal dynamic responses that are an order of magnitude faster than the equivalent flooded cavities.

U2 - 10.1002/2014JB011619

DO - 10.1002/2014JB011619

M3 - Journal article

VL - 120

SP - 864

EP - 878

JO - Journal of Geophysical Research: Solid Earth

JF - Journal of Geophysical Research: Solid Earth

SN - 2169-9356

IS - 2

ER -