Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP)
Author Posting. © American Geophysical Union, 2019. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research-Oceans 124(6), (2019): 3490-3507, doi:10.1029/2018JC014675. Of...
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Online Access: | https://hdl.handle.net/1912/24566 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/24566 2023-05-15T14:25:38+02:00 Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP) Overduin, Pier Paul Schneider von Deimling, T. Miesner, Frederieke Grigoriev, Mikhail N. Ruppel, Carolyn D. Vasiliev, Alexander Lantuit, Hugues Juhls, Bennet Westermann, Sebastian 2019-04-17 https://hdl.handle.net/1912/24566 unknown American Geophysical Union https://doi.org/10.1029/2018JC014675 Overduin, P. P., von Deimling, T. S., Miesner, F., Grigoriev, M. N., Ruppel, C., Vasiliev, A., Lantuit, H., Juhls, B., & Westermann, S. (2019). Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP). Journal of Geophysical Research-Oceans, 124(6), 3490-3507. https://hdl.handle.net/1912/24566 doi:10.1029/2018JC014675 Overduin, P. P., von Deimling, T. S., Miesner, F., Grigoriev, M. N., Ruppel, C., Vasiliev, A., Lantuit, H., Juhls, B., & Westermann, S. (2019). Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP). Journal of Geophysical Research-Oceans, 124(6), 3490-3507. doi:10.1029/2018JC014675 Submarine permafrost Arctic Cryosphere Sea level Article 2019 ftwhoas https://doi.org/10.1029/2018JC014675 2022-10-29T22:57:17Z Author Posting. © American Geophysical Union, 2019. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research-Oceans 124(6), (2019): 3490-3507, doi:10.1029/2018JC014675. Offshore permafrost plays a role in the global climate system, but observations of permafrost thickness, state, and composition are limited to specific regions. The current global permafrost map shows potential offshore permafrost distribution based on bathymetry and global sea level rise. As a first‐order estimate, we employ a heat transfer model to calculate the subsurface temperature field. Our model uses dynamic upper boundary conditions that synthesize Earth System Model air temperature, ice mass distribution and thickness, and global sea level reconstruction and applies globally distributed geothermal heat flux as a lower boundary condition. Sea level reconstruction accounts for differences between marine and terrestrial sedimentation history. Sediment composition and pore water salinity are integrated in the model. Model runs for 450 ka for cross‐shelf transects were used to initialize the model for circumarctic modeling for the past 50 ka. Preindustrial submarine permafrost (i.e., cryotic sediment), modeled at 12.5‐km spatial resolution, lies beneath almost 2.5 ×106km2 of the Arctic shelf. Our simple modeling approach results in estimates of distribution of cryotic sediment that are similar to the current global map and recent seismically delineated permafrost distributions for the Beaufort and Kara seas, suggesting that sea level is a first‐order determinant for submarine permafrost distribution. Ice content and sediment thermal conductivity are also important for determining rates of permafrost thickness change. The model provides a consistent circumarctic approach to map submarine permafrost and to estimate the dynamics of permafrost in the past. Boundary condition data are available online via the ... Article in Journal/Newspaper Arctic arctic cryosphere Arctic Ice permafrost Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Journal of Geophysical Research: Oceans 124 6 3490 3507 |
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Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
unknown |
topic |
Submarine permafrost Arctic Cryosphere Sea level |
spellingShingle |
Submarine permafrost Arctic Cryosphere Sea level Overduin, Pier Paul Schneider von Deimling, T. Miesner, Frederieke Grigoriev, Mikhail N. Ruppel, Carolyn D. Vasiliev, Alexander Lantuit, Hugues Juhls, Bennet Westermann, Sebastian Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP) |
topic_facet |
Submarine permafrost Arctic Cryosphere Sea level |
description |
Author Posting. © American Geophysical Union, 2019. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research-Oceans 124(6), (2019): 3490-3507, doi:10.1029/2018JC014675. Offshore permafrost plays a role in the global climate system, but observations of permafrost thickness, state, and composition are limited to specific regions. The current global permafrost map shows potential offshore permafrost distribution based on bathymetry and global sea level rise. As a first‐order estimate, we employ a heat transfer model to calculate the subsurface temperature field. Our model uses dynamic upper boundary conditions that synthesize Earth System Model air temperature, ice mass distribution and thickness, and global sea level reconstruction and applies globally distributed geothermal heat flux as a lower boundary condition. Sea level reconstruction accounts for differences between marine and terrestrial sedimentation history. Sediment composition and pore water salinity are integrated in the model. Model runs for 450 ka for cross‐shelf transects were used to initialize the model for circumarctic modeling for the past 50 ka. Preindustrial submarine permafrost (i.e., cryotic sediment), modeled at 12.5‐km spatial resolution, lies beneath almost 2.5 ×106km2 of the Arctic shelf. Our simple modeling approach results in estimates of distribution of cryotic sediment that are similar to the current global map and recent seismically delineated permafrost distributions for the Beaufort and Kara seas, suggesting that sea level is a first‐order determinant for submarine permafrost distribution. Ice content and sediment thermal conductivity are also important for determining rates of permafrost thickness change. The model provides a consistent circumarctic approach to map submarine permafrost and to estimate the dynamics of permafrost in the past. Boundary condition data are available online via the ... |
format |
Article in Journal/Newspaper |
author |
Overduin, Pier Paul Schneider von Deimling, T. Miesner, Frederieke Grigoriev, Mikhail N. Ruppel, Carolyn D. Vasiliev, Alexander Lantuit, Hugues Juhls, Bennet Westermann, Sebastian |
author_facet |
Overduin, Pier Paul Schneider von Deimling, T. Miesner, Frederieke Grigoriev, Mikhail N. Ruppel, Carolyn D. Vasiliev, Alexander Lantuit, Hugues Juhls, Bennet Westermann, Sebastian |
author_sort |
Overduin, Pier Paul |
title |
Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP) |
title_short |
Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP) |
title_full |
Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP) |
title_fullStr |
Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP) |
title_full_unstemmed |
Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP) |
title_sort |
submarine permafrost map in the arctic modeled using 1-d transient heat flux (supermap) |
publisher |
American Geophysical Union |
publishDate |
2019 |
url |
https://hdl.handle.net/1912/24566 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic arctic cryosphere Arctic Ice permafrost |
genre_facet |
Arctic arctic cryosphere Arctic Ice permafrost |
op_source |
Overduin, P. P., von Deimling, T. S., Miesner, F., Grigoriev, M. N., Ruppel, C., Vasiliev, A., Lantuit, H., Juhls, B., & Westermann, S. (2019). Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP). Journal of Geophysical Research-Oceans, 124(6), 3490-3507. doi:10.1029/2018JC014675 |
op_relation |
https://doi.org/10.1029/2018JC014675 Overduin, P. P., von Deimling, T. S., Miesner, F., Grigoriev, M. N., Ruppel, C., Vasiliev, A., Lantuit, H., Juhls, B., & Westermann, S. (2019). Submarine permafrost map in the arctic modeled using 1-D transient heat flux (SuPerMAP). Journal of Geophysical Research-Oceans, 124(6), 3490-3507. https://hdl.handle.net/1912/24566 doi:10.1029/2018JC014675 |
op_doi |
https://doi.org/10.1029/2018JC014675 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
124 |
container_issue |
6 |
container_start_page |
3490 |
op_container_end_page |
3507 |
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1766298081456816128 |