New geophysical results from the south-western Eurasian Basin (Morris Jesup Rise, Gakkel Ridge, Yermak Plateau) and the Fram Strait
The international multi-ship expedition ARCTIC'91 was able to collect a seismic transect between the Morris Jesup Rise and the Yermak Plateau. These conjugate plateau structures in the south-western part of the Eurasian Basin bound one of the slowest mid-oceanic spreading ridges in the world, t...
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1995
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fthighwire:oai:open-archive.highwire.org:gji:123/2/601 2023-05-15T14:57:53+02:00 New geophysical results from the south-western Eurasian Basin (Morris Jesup Rise, Gakkel Ridge, Yermak Plateau) and the Fram Strait Jokat, Wilfried Weigelt, Estella Kristofferser, Yngve Rasmussen, Thorkild Schöne, Tilo 1995-11-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/123/2/601 https://doi.org/10.1111/j.1365-246X.1995.tb06874.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/123/2/601 http://dx.doi.org/10.1111/j.1365-246X.1995.tb06874.x Copyright (C) 1995, Oxford University Press Articles TEXT 1995 fthighwire https://doi.org/10.1111/j.1365-246X.1995.tb06874.x 2012-11-23T22:11:15Z The international multi-ship expedition ARCTIC'91 was able to collect a seismic transect between the Morris Jesup Rise and the Yermak Plateau. These conjugate plateau structures in the south-western part of the Eurasian Basin bound one of the slowest mid-oceanic spreading ridges in the world, the Gakkel Ridge. The seismic data reveal a sedimentary cover that is thin relative to the age of the oceanic crust at 83°N, 10°E and 85°N, 15°W. Close to the plateaus, thicker sequences are evident (Morris Jesup Rise, 500 m; Yermak Plateau, 1500 m). The seismic lines on the Morris Jesup Rise reveal only a thin sedimentary cover of 0.2 s TWT. In contrast, a layer with a thickness of almost 0.9 s TWT (1300 m) was found on the northernmost tip of the Yermak Plateau. The topography of the oceanic basement is very rough along the seismic lines, as could be expected at a slow spreading ridge. Depth variations of more than 1000 m are typical. Hydrosweep swath mapping provides the first detailed 3-D image from the Arctic mid-ocean ridge system at 87°N, 60°E and 84°N, 0°. Text Arctic Fram Strait Yermak plateau HighWire Press (Stanford University) Arctic Yermak Plateau ENVELOPE(5.000,5.000,81.250,81.250) Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Morris Jesup Rise ENVELOPE(-20.000,-20.000,83.750,83.750) Geophysical Journal International 123 2 601 610 |
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HighWire Press (Stanford University) |
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English |
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Articles |
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Articles Jokat, Wilfried Weigelt, Estella Kristofferser, Yngve Rasmussen, Thorkild Schöne, Tilo New geophysical results from the south-western Eurasian Basin (Morris Jesup Rise, Gakkel Ridge, Yermak Plateau) and the Fram Strait |
topic_facet |
Articles |
description |
The international multi-ship expedition ARCTIC'91 was able to collect a seismic transect between the Morris Jesup Rise and the Yermak Plateau. These conjugate plateau structures in the south-western part of the Eurasian Basin bound one of the slowest mid-oceanic spreading ridges in the world, the Gakkel Ridge. The seismic data reveal a sedimentary cover that is thin relative to the age of the oceanic crust at 83°N, 10°E and 85°N, 15°W. Close to the plateaus, thicker sequences are evident (Morris Jesup Rise, 500 m; Yermak Plateau, 1500 m). The seismic lines on the Morris Jesup Rise reveal only a thin sedimentary cover of 0.2 s TWT. In contrast, a layer with a thickness of almost 0.9 s TWT (1300 m) was found on the northernmost tip of the Yermak Plateau. The topography of the oceanic basement is very rough along the seismic lines, as could be expected at a slow spreading ridge. Depth variations of more than 1000 m are typical. Hydrosweep swath mapping provides the first detailed 3-D image from the Arctic mid-ocean ridge system at 87°N, 60°E and 84°N, 0°. |
format |
Text |
author |
Jokat, Wilfried Weigelt, Estella Kristofferser, Yngve Rasmussen, Thorkild Schöne, Tilo |
author_facet |
Jokat, Wilfried Weigelt, Estella Kristofferser, Yngve Rasmussen, Thorkild Schöne, Tilo |
author_sort |
Jokat, Wilfried |
title |
New geophysical results from the south-western Eurasian Basin (Morris Jesup Rise, Gakkel Ridge, Yermak Plateau) and the Fram Strait |
title_short |
New geophysical results from the south-western Eurasian Basin (Morris Jesup Rise, Gakkel Ridge, Yermak Plateau) and the Fram Strait |
title_full |
New geophysical results from the south-western Eurasian Basin (Morris Jesup Rise, Gakkel Ridge, Yermak Plateau) and the Fram Strait |
title_fullStr |
New geophysical results from the south-western Eurasian Basin (Morris Jesup Rise, Gakkel Ridge, Yermak Plateau) and the Fram Strait |
title_full_unstemmed |
New geophysical results from the south-western Eurasian Basin (Morris Jesup Rise, Gakkel Ridge, Yermak Plateau) and the Fram Strait |
title_sort |
new geophysical results from the south-western eurasian basin (morris jesup rise, gakkel ridge, yermak plateau) and the fram strait |
publisher |
Oxford University Press |
publishDate |
1995 |
url |
http://gji.oxfordjournals.org/cgi/content/short/123/2/601 https://doi.org/10.1111/j.1365-246X.1995.tb06874.x |
long_lat |
ENVELOPE(5.000,5.000,81.250,81.250) ENVELOPE(90.000,90.000,87.000,87.000) ENVELOPE(-20.000,-20.000,83.750,83.750) |
geographic |
Arctic Yermak Plateau Gakkel Ridge Morris Jesup Rise |
geographic_facet |
Arctic Yermak Plateau Gakkel Ridge Morris Jesup Rise |
genre |
Arctic Fram Strait Yermak plateau |
genre_facet |
Arctic Fram Strait Yermak plateau |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/123/2/601 http://dx.doi.org/10.1111/j.1365-246X.1995.tb06874.x |
op_rights |
Copyright (C) 1995, Oxford University Press |
op_doi |
https://doi.org/10.1111/j.1365-246X.1995.tb06874.x |
container_title |
Geophysical Journal International |
container_volume |
123 |
container_issue |
2 |
container_start_page |
601 |
op_container_end_page |
610 |
_version_ |
1766329981893345280 |