Seven thousand year duration for a geomagnetic excursion constrained by 230Thxs
[1] The duration of geomagnetic excursions may provide important information about the geodynamo. It has proven difficult, however, to assess the exact duration of both excursions and reversals. We combine high-resolution paleomagnetic records from marine sediments with measurements of the 230Thxs f...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.605.9476 2023-05-15T16:48:54+02:00 Seven thousand year duration for a geomagnetic excursion constrained by 230Thxs Mads Faurschou Knudsen Gideon M. Henderson Conall Mac Niocaill A. Joshua West C. Mac Niocaill A. J. West The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.605.9476 http://www.earth.ox.ac.uk/~conallm/IBexcursion-duration_GRL2007.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.605.9476 http://www.earth.ox.ac.uk/~conallm/IBexcursion-duration_GRL2007.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.earth.ox.ac.uk/~conallm/IBexcursion-duration_GRL2007.pdf text 2007 ftciteseerx 2016-01-08T14:15:28Z [1] The duration of geomagnetic excursions may provide important information about the geodynamo. It has proven difficult, however, to assess the exact duration of both excursions and reversals. We combine high-resolution paleomagnetic records from marine sediments with measurements of the 230Thxs flux to the seafloor in order to better constrain the duration of the Iceland Basin Excursion (IBE). We find the duration of the IBE to be 7–8 kyr, implying that it is considerably longer than previous estimates for the Laschamp Excursion (2 kyr), and more similar in duration to that of full polarity reversals. There may not be, therefore, a characteristic timescale for transitional field configurations that distinguishes excursions from reversals. Citation: Knudsen, M. F., G. M. Text Iceland Unknown Knudsen ENVELOPE(16.057,16.057,67.137,67.137) |
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ftciteseerx |
language |
English |
description |
[1] The duration of geomagnetic excursions may provide important information about the geodynamo. It has proven difficult, however, to assess the exact duration of both excursions and reversals. We combine high-resolution paleomagnetic records from marine sediments with measurements of the 230Thxs flux to the seafloor in order to better constrain the duration of the Iceland Basin Excursion (IBE). We find the duration of the IBE to be 7–8 kyr, implying that it is considerably longer than previous estimates for the Laschamp Excursion (2 kyr), and more similar in duration to that of full polarity reversals. There may not be, therefore, a characteristic timescale for transitional field configurations that distinguishes excursions from reversals. Citation: Knudsen, M. F., G. M. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Mads Faurschou Knudsen Gideon M. Henderson Conall Mac Niocaill A. Joshua West C. Mac Niocaill A. J. West |
spellingShingle |
Mads Faurschou Knudsen Gideon M. Henderson Conall Mac Niocaill A. Joshua West C. Mac Niocaill A. J. West Seven thousand year duration for a geomagnetic excursion constrained by 230Thxs |
author_facet |
Mads Faurschou Knudsen Gideon M. Henderson Conall Mac Niocaill A. Joshua West C. Mac Niocaill A. J. West |
author_sort |
Mads Faurschou Knudsen |
title |
Seven thousand year duration for a geomagnetic excursion constrained by 230Thxs |
title_short |
Seven thousand year duration for a geomagnetic excursion constrained by 230Thxs |
title_full |
Seven thousand year duration for a geomagnetic excursion constrained by 230Thxs |
title_fullStr |
Seven thousand year duration for a geomagnetic excursion constrained by 230Thxs |
title_full_unstemmed |
Seven thousand year duration for a geomagnetic excursion constrained by 230Thxs |
title_sort |
seven thousand year duration for a geomagnetic excursion constrained by 230thxs |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.605.9476 http://www.earth.ox.ac.uk/~conallm/IBexcursion-duration_GRL2007.pdf |
long_lat |
ENVELOPE(16.057,16.057,67.137,67.137) |
geographic |
Knudsen |
geographic_facet |
Knudsen |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
http://www.earth.ox.ac.uk/~conallm/IBexcursion-duration_GRL2007.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.605.9476 http://www.earth.ox.ac.uk/~conallm/IBexcursion-duration_GRL2007.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766038990397374464 |