Environmental magnetic record and paleosecular variation data for the last 40 kyrs from the Lake Biwa sediments, Central Japan
Abstract We have conducted paleomagnetic and environmental magnetic analysis of a sediment piston core recovered from Lake Biwa, central Japan. Tephrochronology and AMS radiocarbon dating showed that this core covers the time period since about 40 kyr BP. The variation of paleomagnetic direction sho...
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crspringernat:10.1186/bf03352743 2023-05-15T16:29:47+02:00 Environmental magnetic record and paleosecular variation data for the last 40 kyrs from the Lake Biwa sediments, Central Japan Hayashida, Akira Ali, Mohammed Kuniko, Yoshiki Kitagawa, Hiroyuki Torii, Masayuki Takemura, Keiji 2007 http://dx.doi.org/10.1186/bf03352743 https://link.springer.com/content/pdf/10.1186/BF03352743.pdf https://link.springer.com/article/10.1186/BF03352743/fulltext.html http://link.springer.com/content/pdf/10.1186/BF03352743 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/ CC-BY Earth, Planets and Space volume 59, issue 7, page 807-814 ISSN 1880-5981 Space and Planetary Science Geology journal-article 2007 crspringernat https://doi.org/10.1186/bf03352743 2022-01-04T11:03:57Z Abstract We have conducted paleomagnetic and environmental magnetic analysis of a sediment piston core recovered from Lake Biwa, central Japan. Tephrochronology and AMS radiocarbon dating showed that this core covers the time period since about 40 kyr BP. The variation of paleomagnetic direction shows a good agreement with the PSV record for the last 10 kyrs from the deeper water site (BIWA SV-3; Ali et al ., 1999), although the amplitudes are subdued probably due to the relatively lower accumulation rate at the shallower site. Inclination lows of the pre-Holocene interval are correlated to PSV records reported from the marine sediments off Shikoku and in the Japan Sea. In addition, the variation of magnetic mineral concentration reflects environmental changes during the last glacial period. It is suggested that the flux of fine-grained magnetite, probably associated with greater precipitation, was increased during interstadial periods. The variation of anhysteretic remanent magnetization is likely correlated to the Dansgaard-Oeschger (D-O) cycles recorded in Greenland ice cores. An apparent swing of the PSV curve is recognized at about 27 ka, but evidence for the Mono Lake excursion at 32 ka around the D-O events 6 and 7 is unclear. Combination of the detailed paleomagnetic record and the sub-Milankovitch climate cycles thus provides better resolution for understanding geomagnetic secular variation and polarity excursions in space and time. Article in Journal/Newspaper Greenland Greenland ice cores Springer Nature (via Crossref) Greenland Earth, Planets and Space 59 7 807 814 |
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Springer Nature (via Crossref) |
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English |
topic |
Space and Planetary Science Geology |
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Space and Planetary Science Geology Hayashida, Akira Ali, Mohammed Kuniko, Yoshiki Kitagawa, Hiroyuki Torii, Masayuki Takemura, Keiji Environmental magnetic record and paleosecular variation data for the last 40 kyrs from the Lake Biwa sediments, Central Japan |
topic_facet |
Space and Planetary Science Geology |
description |
Abstract We have conducted paleomagnetic and environmental magnetic analysis of a sediment piston core recovered from Lake Biwa, central Japan. Tephrochronology and AMS radiocarbon dating showed that this core covers the time period since about 40 kyr BP. The variation of paleomagnetic direction shows a good agreement with the PSV record for the last 10 kyrs from the deeper water site (BIWA SV-3; Ali et al ., 1999), although the amplitudes are subdued probably due to the relatively lower accumulation rate at the shallower site. Inclination lows of the pre-Holocene interval are correlated to PSV records reported from the marine sediments off Shikoku and in the Japan Sea. In addition, the variation of magnetic mineral concentration reflects environmental changes during the last glacial period. It is suggested that the flux of fine-grained magnetite, probably associated with greater precipitation, was increased during interstadial periods. The variation of anhysteretic remanent magnetization is likely correlated to the Dansgaard-Oeschger (D-O) cycles recorded in Greenland ice cores. An apparent swing of the PSV curve is recognized at about 27 ka, but evidence for the Mono Lake excursion at 32 ka around the D-O events 6 and 7 is unclear. Combination of the detailed paleomagnetic record and the sub-Milankovitch climate cycles thus provides better resolution for understanding geomagnetic secular variation and polarity excursions in space and time. |
format |
Article in Journal/Newspaper |
author |
Hayashida, Akira Ali, Mohammed Kuniko, Yoshiki Kitagawa, Hiroyuki Torii, Masayuki Takemura, Keiji |
author_facet |
Hayashida, Akira Ali, Mohammed Kuniko, Yoshiki Kitagawa, Hiroyuki Torii, Masayuki Takemura, Keiji |
author_sort |
Hayashida, Akira |
title |
Environmental magnetic record and paleosecular variation data for the last 40 kyrs from the Lake Biwa sediments, Central Japan |
title_short |
Environmental magnetic record and paleosecular variation data for the last 40 kyrs from the Lake Biwa sediments, Central Japan |
title_full |
Environmental magnetic record and paleosecular variation data for the last 40 kyrs from the Lake Biwa sediments, Central Japan |
title_fullStr |
Environmental magnetic record and paleosecular variation data for the last 40 kyrs from the Lake Biwa sediments, Central Japan |
title_full_unstemmed |
Environmental magnetic record and paleosecular variation data for the last 40 kyrs from the Lake Biwa sediments, Central Japan |
title_sort |
environmental magnetic record and paleosecular variation data for the last 40 kyrs from the lake biwa sediments, central japan |
publisher |
Springer Science and Business Media LLC |
publishDate |
2007 |
url |
http://dx.doi.org/10.1186/bf03352743 https://link.springer.com/content/pdf/10.1186/BF03352743.pdf https://link.springer.com/article/10.1186/BF03352743/fulltext.html http://link.springer.com/content/pdf/10.1186/BF03352743 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores |
genre_facet |
Greenland Greenland ice cores |
op_source |
Earth, Planets and Space volume 59, issue 7, page 807-814 ISSN 1880-5981 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1186/bf03352743 |
container_title |
Earth, Planets and Space |
container_volume |
59 |
container_issue |
7 |
container_start_page |
807 |
op_container_end_page |
814 |
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1766019495006044160 |