Geothermal heat source estimations through ice flow modelling at Mýrdalsjökull, Iceland

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Abstract Geothermal heat sources beneath glaciers and ice caps influence local ice-dynamics and mass balance but also control ice surface depression evolution as well as subglacial water reservoir dynamics. Resulting jökulhlaups (i.e., glacier lake outburst floods) impose danger to people and infrastructure, especially in Iceland, where they are closely monitored. Due to hundreds of meters of ice, direct measurements of heat source strength and extent are not possible. We present an indirect measurement method which utilizes ice flow simulations and glacier surface data, such as surface mass balance and surface depression evolution. Heat source locations can be inferred accurately to simulation grid scales; heat source strength and spatial distributions are also well quantified. Our methods are applied to the Mýrdalsjökull ice cap in Iceland, where we are able to refine previous heat source estimates.

Location: Deutsche Nationalbibliothek Frankfurt am Main

Extent: Online-Ressource

Language: Englisch

Bibliographic citation: Geothermal heat source estimations through ice flow modelling at Mýrdalsjökull, Iceland ; volume:18 ; number:5 ; year:2024 ; pages:2443-2454 ; extent:12
The Cryosphere ; 18, Heft 5 (2024), 2443-2454 (gesamt 12)

Creator: Jarosch, Alexander H.
Magnússon, Eyjólfur
Hannesdóttir, Krista
Belart, Joaquín M. C.
Pálsson, Finnur

DOI: 10.5194/tc-18-2443-2024

URN: urn:nbn:de:101:1-2405230426192.286069730163

Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.

Last update: 14.08.2025, 10:50 AM CEST

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Jarosch, Alexander H.
Magnússon, Eyjólfur
Hannesdóttir, Krista
Belart, Joaquín M. C.
Pálsson, Finnur

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Exceptionally High Geothermal Heat Flux Needed to Sustain the Northeast Greenland Ice Stream

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Continuous microgravity monitoring of the Þeistareykir geothermal field (North Iceland)

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Inversion of geothermal heat flux in a thermomechanically coupled nonlinear Stokes ice sheet model

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Fibre optic distributed temperature sensing behind casing: data from geothermal well HE-53, Hellisheiði geothermal field, SW Iceland

Training needs in geothermal energy : report of the workshop, Laugarvatn, Iceland, July 1978

Training needs in geothermal energy : report of the workshop, Laugarvatn, Iceland, July 1978

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Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland

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Geothermal gradient and heat flow data in and around Japan (I): Appraisal of heat flow from geothermal gradient data

Correction: Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland

Correction: Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland

Geothermal heat source estimations through ice flow modelling at Mýrdalsjökull, Iceland

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Vertical Seismic Profiling in the Krafla Geothermal Field, NE-Iceland

Vertical Seismic Profiling in the Krafla Geothermal Field, NE-Iceland

Exceptionally High Geothermal Heat Flux Needed to Sustain the Northeast Greenland Ice Stream

Exceptionally High Geothermal Heat Flux Needed to Sustain the Northeast Greenland Ice Stream

High geothermal heat flux in close proximity to the Northeast Greenland Ice Stream

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Geothermal heat flux from measured temperature profiles in deep ice boreholes in Antarctica

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Continuous microgravity monitoring of the Þeistareykir geothermal field (North Iceland)

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Inversion of geothermal heat flux in a thermomechanically coupled nonlinear Stokes ice sheet model

Fibre optic distributed temperature sensing behind casing: data from geothermal well HE-53, Hellisheiði geothermal field, SW Iceland

Fibre optic distributed temperature sensing behind casing: data from geothermal well HE-53, Hellisheiði geothermal field, SW Iceland

Training needs in geothermal energy : report of the workshop, Laugarvatn, Iceland, July 1978

Training needs in geothermal energy : report of the workshop, Laugarvatn, Iceland, July 1978

Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland

Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland

Geothermal gradient and heat flow data in and around Japan (I): Appraisal of heat flow from geothermal gradient data

Geothermal gradient and heat flow data in and around Japan (I): Appraisal of heat flow from geothermal gradient data

Correction: Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland

Correction: Environmental and anthropogenic gravity contributions at the Þeistareykir geothermal field, North Iceland

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