Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland
Earlier inversions of body wave delay-time data recorded during the ICEMELT portable broadband experiment imaged a cylindrical plume-like low-velocity anomaly extending to at least 400 km depth beneath Iceland, but the depth extent of the anomaly resolvable by tomography has recently been called int...
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Online Access: | https://hdl.handle.net/20.500.11815/569 https://doi.org/10.1029/2001GL013657 |
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ftopinvisindi:oai:opinvisindi.is:20.500.11815/569 2024-09-15T18:13:18+00:00 Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland Wolfe, Cecily J. Bjarnason, Ingi Þorleifur VanDecar, John C. Solomon, Sean C. Raunvísindastofnun (HÍ) Science Institute (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland 2002 1-4 https://hdl.handle.net/20.500.11815/569 https://doi.org/10.1029/2001GL013657 en eng Wiley-Blackwell Geophysical Research Letters;29(2) https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2001GL013657 Wolfe, C. J., Bjarnason, I. T., VanDecar, J. C., & Solomon, S. C. (2002). Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland. Geophysical Research Letters, 29(2), 1-4. doi:10.1029/2001GL013657 0094-8276 1944-8007 (eISSN) https://hdl.handle.net/20.500.11815/569 Geophysical Research Letters doi:10.1029/2001GL013657 info:eu-repo/semantics/openAccess Convection currents Mantle plume Lithosphere Tornography Jarðmöttull Jarðskorpa Möttulstrókur Aflfræði info:eu-repo/semantics/article 2002 ftopinvisindi https://doi.org/20.500.11815/56910.1029/2001GL013657 2024-07-09T03:01:56Z Earlier inversions of body wave delay-time data recorded during the ICEMELT portable broadband experiment imaged a cylindrical plume-like low-velocity anomaly extending to at least 400 km depth beneath Iceland, but the depth extent of the anomaly resolvable by tomography has recently been called into question. We have performed several additional resolution tests to evaluate the depth resolution of tomographic models of the Icelandic upper mantle. The distribution of paths of body waves recorded by ICEMELT can distinguish among three different types of models: (a) a wide and shallow anomaly, (b) a narrow and deep anomaly, and (c) a narrow and shallow anomaly. While tomographic models contain an element of nonuniqueness, these tests illustrate that the depth resolution of passive seismic experiments spanning subaerial Iceland is adequate for distinguishing among alternative geodynamic models. This work was supported by the National Science Foundation under grants EAR-9316137, OCE-9402991, and OCE-9618125. We thank two anonymous reviewers for their constructive comments. School of Ocean and Earth Science and Technology, University of Hawaii, contribution number 5874. Hawaii Institute of Geophysics and Planetology contribution number 1184. Peer Reviewed Article in Journal/Newspaper Iceland Opin vísindi (Iceland) Geophysical Research Letters 29 2 |
institution |
Open Polar |
collection |
Opin vísindi (Iceland) |
op_collection_id |
ftopinvisindi |
language |
English |
topic |
Convection currents Mantle plume Lithosphere Tornography Jarðmöttull Jarðskorpa Möttulstrókur Aflfræði |
spellingShingle |
Convection currents Mantle plume Lithosphere Tornography Jarðmöttull Jarðskorpa Möttulstrókur Aflfræði Wolfe, Cecily J. Bjarnason, Ingi Þorleifur VanDecar, John C. Solomon, Sean C. Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland |
topic_facet |
Convection currents Mantle plume Lithosphere Tornography Jarðmöttull Jarðskorpa Möttulstrókur Aflfræði |
description |
Earlier inversions of body wave delay-time data recorded during the ICEMELT portable broadband experiment imaged a cylindrical plume-like low-velocity anomaly extending to at least 400 km depth beneath Iceland, but the depth extent of the anomaly resolvable by tomography has recently been called into question. We have performed several additional resolution tests to evaluate the depth resolution of tomographic models of the Icelandic upper mantle. The distribution of paths of body waves recorded by ICEMELT can distinguish among three different types of models: (a) a wide and shallow anomaly, (b) a narrow and deep anomaly, and (c) a narrow and shallow anomaly. While tomographic models contain an element of nonuniqueness, these tests illustrate that the depth resolution of passive seismic experiments spanning subaerial Iceland is adequate for distinguishing among alternative geodynamic models. This work was supported by the National Science Foundation under grants EAR-9316137, OCE-9402991, and OCE-9618125. We thank two anonymous reviewers for their constructive comments. School of Ocean and Earth Science and Technology, University of Hawaii, contribution number 5874. Hawaii Institute of Geophysics and Planetology contribution number 1184. Peer Reviewed |
author2 |
Raunvísindastofnun (HÍ) Science Institute (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland |
format |
Article in Journal/Newspaper |
author |
Wolfe, Cecily J. Bjarnason, Ingi Þorleifur VanDecar, John C. Solomon, Sean C. |
author_facet |
Wolfe, Cecily J. Bjarnason, Ingi Þorleifur VanDecar, John C. Solomon, Sean C. |
author_sort |
Wolfe, Cecily J. |
title |
Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland |
title_short |
Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland |
title_full |
Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland |
title_fullStr |
Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland |
title_full_unstemmed |
Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland |
title_sort |
assessing the depth resolution of tomographic models of upper mantle structure beneath iceland |
publisher |
Wiley-Blackwell |
publishDate |
2002 |
url |
https://hdl.handle.net/20.500.11815/569 https://doi.org/10.1029/2001GL013657 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Geophysical Research Letters;29(2) https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2001GL013657 Wolfe, C. J., Bjarnason, I. T., VanDecar, J. C., & Solomon, S. C. (2002). Assessing the depth resolution of tomographic models of upper mantle structure beneath Iceland. Geophysical Research Letters, 29(2), 1-4. doi:10.1029/2001GL013657 0094-8276 1944-8007 (eISSN) https://hdl.handle.net/20.500.11815/569 Geophysical Research Letters doi:10.1029/2001GL013657 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11815/56910.1029/2001GL013657 |
container_title |
Geophysical Research Letters |
container_volume |
29 |
container_issue |
2 |
_version_ |
1810450990126596096 |