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  • Dziadek et al 2019

    Rights statement: This is the author’s version of a work that was accepted for publication in Earth and Planetary Science Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Earth and Planetary Science Letters, 506, 2019 DOI: 10.1016/j.epsl.2018.11.003

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Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica

Research output: Contribution to journalJournal article

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Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica. / Sci Team Expedition PS104.

In: Earth and Planetary Science Letters, Vol. 506, 15.01.2019, p. 530-539.

Research output: Contribution to journalJournal article

Harvard

Sci Team Expedition PS104 2019, 'Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica', Earth and Planetary Science Letters, vol. 506, pp. 530-539. https://doi.org/10.1016/j.epsl.2018.11.003

APA

Sci Team Expedition PS104 (2019). Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica. Earth and Planetary Science Letters, 506, 530-539. https://doi.org/10.1016/j.epsl.2018.11.003

Vancouver

Sci Team Expedition PS104. Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica. Earth and Planetary Science Letters. 2019 Jan 15;506:530-539. https://doi.org/10.1016/j.epsl.2018.11.003

Author

Sci Team Expedition PS104. / Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica. In: Earth and Planetary Science Letters. 2019 ; Vol. 506. pp. 530-539.

Bibtex

@article{189ad852302d4955a0c2139a5e8240bc,
title = "Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica",
abstract = "The thermal state of polar continental crust plays a crucial role for understanding the stability and thickness of large ice sheets, the visco-elastic response of the solid Earth due to unloading when large ice caps melt and, in turn, the accuracy of future sea-level rise prediction. Various studies demonstrate the need for precise measurements and estimation of geothermal heat flow (GHF) in Antarctica for better constrained boundary conditions to enhance the ice sheet model performance. This study provides ground-truth for regional indirect GHF estimates in the Amundsen Sea Embayment, which is part of the West Antarctic Rift System, by presenting in situ temperature measurements in continental shelf sediments. Our results show regionally elevated and heterogeneous GHF (mean of 65 mW m(-2)) in the Amundsen Sea Embayment. Considering thermal blanketing effects, induced by inflow of warmer water and sedimentary processes, the estimated GHF ranges between 65 mW m(-2) and 95 mW m(-2). (C) 2018 Elsevier B.V. All rights reserved.",
keywords = "skin depth for geothermal gradients, spatial variation of geothermal heat flow on small scales, in situ temperature measurements, geotherm transition, CIRCUMPOLAR DEEP-WATER, PINE ISLAND BAY, CONTINENTAL-SHELF, ICE, FLUX, TEMPERATURE, BOREHOLE, CONSTRAINTS, VARIABILITY, SATELLITE",
author = "{Sci Team Expedition PS104} and R. Dziadek and K. Gohl and N. Kaul and Gabriele Uenzelmann-Neben and Katharina Hochmuth and Florian Riefstahl and Catalina Gebhardt and Jan-Erik Arndt and Johann Klages and Oliver Esper and Thomas Ronge and Kevin Kuessner and Gerhard Kuehn and Robert Larter and Claus-Dieter Hillenbrand and James Smith and Torsten Bickert and Heiko Palike and Thomas Frederichs and Tim Freudenthal and Maximilian Zundel and Cornelia Spiegel and Werner Ehrmann and Steve Bohaty and {van de Flierdt}, Tina and Pereira, {Simoes Patric} and Yani Najman and Mirko Scheinert and Benjamin Ebermann and Victoria Afanasyeva",
note = "This is the author’s version of a work that was accepted for publication in Earth and Planetary Science Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Earth and Planetary Science Letters, 506, 2019 DOI: 10.1016/j.epsl.2018.11.003",
year = "2019",
month = "1",
day = "15",
doi = "10.1016/j.epsl.2018.11.003",
language = "English",
volume = "506",
pages = "530--539",
journal = "Earth and Planetary Science Letters",
issn = "0012-821X",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Elevated geothermal surface heat flow in the Amundsen Sea Embayment, West Antarctica

AU - Sci Team Expedition PS104

AU - Dziadek, R.

AU - Gohl, K.

AU - Kaul, N.

AU - Uenzelmann-Neben, Gabriele

AU - Hochmuth, Katharina

AU - Riefstahl, Florian

AU - Gebhardt, Catalina

AU - Arndt, Jan-Erik

AU - Klages, Johann

AU - Esper, Oliver

AU - Ronge, Thomas

AU - Kuessner, Kevin

AU - Kuehn, Gerhard

AU - Larter, Robert

AU - Hillenbrand, Claus-Dieter

AU - Smith, James

AU - Bickert, Torsten

AU - Palike, Heiko

AU - Frederichs, Thomas

AU - Freudenthal, Tim

AU - Zundel, Maximilian

AU - Spiegel, Cornelia

AU - Ehrmann, Werner

AU - Bohaty, Steve

AU - van de Flierdt, Tina

AU - Pereira, Simoes Patric

AU - Najman, Yani

AU - Scheinert, Mirko

AU - Ebermann, Benjamin

AU - Afanasyeva, Victoria

N1 - This is the author’s version of a work that was accepted for publication in Earth and Planetary Science Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Earth and Planetary Science Letters, 506, 2019 DOI: 10.1016/j.epsl.2018.11.003

PY - 2019/1/15

Y1 - 2019/1/15

N2 - The thermal state of polar continental crust plays a crucial role for understanding the stability and thickness of large ice sheets, the visco-elastic response of the solid Earth due to unloading when large ice caps melt and, in turn, the accuracy of future sea-level rise prediction. Various studies demonstrate the need for precise measurements and estimation of geothermal heat flow (GHF) in Antarctica for better constrained boundary conditions to enhance the ice sheet model performance. This study provides ground-truth for regional indirect GHF estimates in the Amundsen Sea Embayment, which is part of the West Antarctic Rift System, by presenting in situ temperature measurements in continental shelf sediments. Our results show regionally elevated and heterogeneous GHF (mean of 65 mW m(-2)) in the Amundsen Sea Embayment. Considering thermal blanketing effects, induced by inflow of warmer water and sedimentary processes, the estimated GHF ranges between 65 mW m(-2) and 95 mW m(-2). (C) 2018 Elsevier B.V. All rights reserved.

AB - The thermal state of polar continental crust plays a crucial role for understanding the stability and thickness of large ice sheets, the visco-elastic response of the solid Earth due to unloading when large ice caps melt and, in turn, the accuracy of future sea-level rise prediction. Various studies demonstrate the need for precise measurements and estimation of geothermal heat flow (GHF) in Antarctica for better constrained boundary conditions to enhance the ice sheet model performance. This study provides ground-truth for regional indirect GHF estimates in the Amundsen Sea Embayment, which is part of the West Antarctic Rift System, by presenting in situ temperature measurements in continental shelf sediments. Our results show regionally elevated and heterogeneous GHF (mean of 65 mW m(-2)) in the Amundsen Sea Embayment. Considering thermal blanketing effects, induced by inflow of warmer water and sedimentary processes, the estimated GHF ranges between 65 mW m(-2) and 95 mW m(-2). (C) 2018 Elsevier B.V. All rights reserved.

KW - skin depth for geothermal gradients

KW - spatial variation of geothermal heat flow on small scales

KW - in situ temperature measurements

KW - geotherm transition

KW - CIRCUMPOLAR DEEP-WATER

KW - PINE ISLAND BAY

KW - CONTINENTAL-SHELF

KW - ICE

KW - FLUX

KW - TEMPERATURE

KW - BOREHOLE

KW - CONSTRAINTS

KW - VARIABILITY

KW - SATELLITE

U2 - 10.1016/j.epsl.2018.11.003

DO - 10.1016/j.epsl.2018.11.003

M3 - Journal article

VL - 506

SP - 530

EP - 539

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

SN - 0012-821X

ER -