The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness
For the first time, lithospheric temperatures, strength, and effective elastic thickness (Te) distributions are estimated for the Arctic region north of 68°. To this aim, we use ArcCRUST, a recent model of the Arctic crust, which includes the thickness and density of the crust and sediments, the bou...
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ftqueensland:oai:eprints.qut.edu.au:231417 2024-05-19T07:33:07+00:00 The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness Struijk, Erzsébet L.M. Tesauro, Magdala Lebedeva-Ivanova, Nina N. Gaina, Carmen Beekman, Fred Cloetingh, Sierd A.P.L. 2018-12 https://eprints.qut.edu.au/231417/ unknown Elsevier doi:10.1016/j.gloplacha.2018.07.014 Struijk, Erzsébet L.M., Tesauro, Magdala, Lebedeva-Ivanova, Nina N., Gaina, Carmen, Beekman, Fred, & Cloetingh, Sierd A.P.L. (2018) The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness. Global and Planetary Change, 171, pp. 2-17. https://eprints.qut.edu.au/231417/ 2018 Elsevier B.V. This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au Global and Planetary Change Arctic lithosphere Effective elastic thickness Lithospheric strength Thermal models Contribution to Journal 2018 ftqueensland https://doi.org/10.1016/j.gloplacha.2018.07.014 2024-04-30T23:59:52Z For the first time, lithospheric temperatures, strength, and effective elastic thickness (Te) distributions are estimated for the Arctic region north of 68°. To this aim, we use ArcCRUST, a recent model of the Arctic crust, which includes the thickness and density of the crust and sediments, the boundaries between the continental and oceanic crust, and the age of the oceanic lithosphere. We estimate the temperature variations in the continental lithosphere assuming steady-state conditions, for a constant surface heat flow of 50 mWm −2 and 62 mWm −2 for the onshore and offshore regions, respectively. In the oceanic domain, the temperature variations are estimated adopting a global depth and heat flow model. We discuss the robustness of the results by comparing the new thermal field with temperatures obtained from inversion of a regional seismic velocity model. The results are used as input for estimating integrated strength and Te, assuming a mafic crustal rheology. Our models predict a sharp transition between cratonic areas, characterized by high strength and Te, and tectonically active areas with a weaker lithosphere, corresponding to the continental shelves and the oceanic spreading ridges. The significant lateral change in our modeled strength and Te at the edges of Greenland and Canadian Arctic and along the active mid-ocean ridge in the NE Atlantic corresponds to increased observed seismic activity. Article in Journal/Newspaper Arctic Arctic Greenland Queensland University of Technology: QUT ePrints Global and Planetary Change 171 2 17 |
institution |
Open Polar |
collection |
Queensland University of Technology: QUT ePrints |
op_collection_id |
ftqueensland |
language |
unknown |
topic |
Arctic lithosphere Effective elastic thickness Lithospheric strength Thermal models |
spellingShingle |
Arctic lithosphere Effective elastic thickness Lithospheric strength Thermal models Struijk, Erzsébet L.M. Tesauro, Magdala Lebedeva-Ivanova, Nina N. Gaina, Carmen Beekman, Fred Cloetingh, Sierd A.P.L. The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness |
topic_facet |
Arctic lithosphere Effective elastic thickness Lithospheric strength Thermal models |
description |
For the first time, lithospheric temperatures, strength, and effective elastic thickness (Te) distributions are estimated for the Arctic region north of 68°. To this aim, we use ArcCRUST, a recent model of the Arctic crust, which includes the thickness and density of the crust and sediments, the boundaries between the continental and oceanic crust, and the age of the oceanic lithosphere. We estimate the temperature variations in the continental lithosphere assuming steady-state conditions, for a constant surface heat flow of 50 mWm −2 and 62 mWm −2 for the onshore and offshore regions, respectively. In the oceanic domain, the temperature variations are estimated adopting a global depth and heat flow model. We discuss the robustness of the results by comparing the new thermal field with temperatures obtained from inversion of a regional seismic velocity model. The results are used as input for estimating integrated strength and Te, assuming a mafic crustal rheology. Our models predict a sharp transition between cratonic areas, characterized by high strength and Te, and tectonically active areas with a weaker lithosphere, corresponding to the continental shelves and the oceanic spreading ridges. The significant lateral change in our modeled strength and Te at the edges of Greenland and Canadian Arctic and along the active mid-ocean ridge in the NE Atlantic corresponds to increased observed seismic activity. |
format |
Article in Journal/Newspaper |
author |
Struijk, Erzsébet L.M. Tesauro, Magdala Lebedeva-Ivanova, Nina N. Gaina, Carmen Beekman, Fred Cloetingh, Sierd A.P.L. |
author_facet |
Struijk, Erzsébet L.M. Tesauro, Magdala Lebedeva-Ivanova, Nina N. Gaina, Carmen Beekman, Fred Cloetingh, Sierd A.P.L. |
author_sort |
Struijk, Erzsébet L.M. |
title |
The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness |
title_short |
The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness |
title_full |
The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness |
title_fullStr |
The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness |
title_full_unstemmed |
The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness |
title_sort |
arctic lithosphere: thermo-mechanical structure and effective elastic thickness |
publisher |
Elsevier |
publishDate |
2018 |
url |
https://eprints.qut.edu.au/231417/ |
genre |
Arctic Arctic Greenland |
genre_facet |
Arctic Arctic Greenland |
op_source |
Global and Planetary Change |
op_relation |
doi:10.1016/j.gloplacha.2018.07.014 Struijk, Erzsébet L.M., Tesauro, Magdala, Lebedeva-Ivanova, Nina N., Gaina, Carmen, Beekman, Fred, & Cloetingh, Sierd A.P.L. (2018) The Arctic lithosphere: Thermo-mechanical structure and effective elastic thickness. Global and Planetary Change, 171, pp. 2-17. https://eprints.qut.edu.au/231417/ |
op_rights |
2018 Elsevier B.V. This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au |
op_doi |
https://doi.org/10.1016/j.gloplacha.2018.07.014 |
container_title |
Global and Planetary Change |
container_volume |
171 |
container_start_page |
2 |
op_container_end_page |
17 |
_version_ |
1799471261080879104 |