Astronomical Forcing in Cosmogenic Be-10 Variation from East Antarctica Coast?
Cosmogenic 10Be concentrations in Antarctic ice (Vostok site), during the past 150 ka (1 ka = 1000 years) have been spectrally analyzed. The current interest in beryllium refers on its use as a dating tool in lake, offshore/marine, and ice-core environments, and for palaeoclimate variation and recon...
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1998
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ftfloridaojojs:oai:journals.flvc.org:article/80693 2024-10-13T14:02:46+00:00 Astronomical Forcing in Cosmogenic Be-10 Variation from East Antarctica Coast? Liritzis, I. Grigori, E. 1998-07-13 application/pdf https://journals.flvc.org/jcr/article/view/80693 eng eng Journal of Coastal Research https://journals.flvc.org/jcr/article/view/80693/77874 https://journals.flvc.org/jcr/article/view/80693 Journal of Coastal Research; Vol. 14 No. 3 (1998): Journal of Coastal Research 0749-0208 Beryllium-10 palaeoclimates oxygen-18 Milankovich periodicities info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 1998 ftfloridaojojs 2024-09-23T09:57:07Z Cosmogenic 10Be concentrations in Antarctic ice (Vostok site), during the past 150 ka (1 ka = 1000 years) have been spectrally analyzed. The current interest in beryllium refers on its use as a dating tool in lake, offshore/marine, and ice-core environments, and for palaeoclimate variation and reconstruction. The methods of fast fourier transform maximum entropy, and power spectrum employing the Blackman-Tukey window, as well as significance tests (x2, Kolmogorov-Smirnov, analysis per subset, randomness test etc.) were applied. Significant and strongly stationary periodicities centered around 100 ka (large uncertainty, near the record length), 40 ka, 25 ka, 19 ka, 12 ka and 5 ka were found, superimposed upon each other forming a network of periodic cycles. Similar periodicities were previously reported for แตน18O variation from V28-239 pacific ocean deep-sea core and other direct or proxy palaeoclimatic data. They are recognized with the well known astronomical frequencies; the long-term variations in the geometry of the earth's orbit and rotation as the fundamental causes of Pleistocene ice-ages of the past 3 Ma. This astronomical forcing (referred to as the Milankovich theory) is for first time observed in 10Be variation, and interesting observations can be made regarding the contiguity between 10Be production-deposition rates, palaeoclimate, solar activity, earth's orbit and rotation, sea-level changes and geomagnetic field. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Florida Online Journals (FloridaOJ) Antarctic East Antarctica Pacific |
institution |
Open Polar |
collection |
Florida Online Journals (FloridaOJ) |
op_collection_id |
ftfloridaojojs |
language |
English |
topic |
Beryllium-10 palaeoclimates oxygen-18 Milankovich periodicities |
spellingShingle |
Beryllium-10 palaeoclimates oxygen-18 Milankovich periodicities Liritzis, I. Grigori, E. Astronomical Forcing in Cosmogenic Be-10 Variation from East Antarctica Coast? |
topic_facet |
Beryllium-10 palaeoclimates oxygen-18 Milankovich periodicities |
description |
Cosmogenic 10Be concentrations in Antarctic ice (Vostok site), during the past 150 ka (1 ka = 1000 years) have been spectrally analyzed. The current interest in beryllium refers on its use as a dating tool in lake, offshore/marine, and ice-core environments, and for palaeoclimate variation and reconstruction. The methods of fast fourier transform maximum entropy, and power spectrum employing the Blackman-Tukey window, as well as significance tests (x2, Kolmogorov-Smirnov, analysis per subset, randomness test etc.) were applied. Significant and strongly stationary periodicities centered around 100 ka (large uncertainty, near the record length), 40 ka, 25 ka, 19 ka, 12 ka and 5 ka were found, superimposed upon each other forming a network of periodic cycles. Similar periodicities were previously reported for แตน18O variation from V28-239 pacific ocean deep-sea core and other direct or proxy palaeoclimatic data. They are recognized with the well known astronomical frequencies; the long-term variations in the geometry of the earth's orbit and rotation as the fundamental causes of Pleistocene ice-ages of the past 3 Ma. This astronomical forcing (referred to as the Milankovich theory) is for first time observed in 10Be variation, and interesting observations can be made regarding the contiguity between 10Be production-deposition rates, palaeoclimate, solar activity, earth's orbit and rotation, sea-level changes and geomagnetic field. |
format |
Article in Journal/Newspaper |
author |
Liritzis, I. Grigori, E. |
author_facet |
Liritzis, I. Grigori, E. |
author_sort |
Liritzis, I. |
title |
Astronomical Forcing in Cosmogenic Be-10 Variation from East Antarctica Coast? |
title_short |
Astronomical Forcing in Cosmogenic Be-10 Variation from East Antarctica Coast? |
title_full |
Astronomical Forcing in Cosmogenic Be-10 Variation from East Antarctica Coast? |
title_fullStr |
Astronomical Forcing in Cosmogenic Be-10 Variation from East Antarctica Coast? |
title_full_unstemmed |
Astronomical Forcing in Cosmogenic Be-10 Variation from East Antarctica Coast? |
title_sort |
astronomical forcing in cosmogenic be-10 variation from east antarctica coast? |
publisher |
Journal of Coastal Research |
publishDate |
1998 |
url |
https://journals.flvc.org/jcr/article/view/80693 |
geographic |
Antarctic East Antarctica Pacific |
geographic_facet |
Antarctic East Antarctica Pacific |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core |
op_source |
Journal of Coastal Research; Vol. 14 No. 3 (1998): Journal of Coastal Research 0749-0208 |
op_relation |
https://journals.flvc.org/jcr/article/view/80693/77874 https://journals.flvc.org/jcr/article/view/80693 |
_version_ |
1812819240457076736 |