Chronology and petrology in MIS4-2 of DSDP Site 94-609 ...

Ice-rafting evidence for a '1500-year cycle' sparked considerable debate on millennial-scale climate change and the role of solar variability. Here, we reinterpret the last 70,000 years of the subpolar North Atlantic record, focusing on classic DSDP Site 609, in the context of newly availa...

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Main Authors: Obrochta, Stephen P, Miyahara, Hiroko, Yokoyama, Yusuke, Crowley, Thomas J
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2012
Subjects:
Online Access:https://dx.doi.org/10.1594/pangaea.834701
https://doi.pangaea.de/10.1594/PANGAEA.834701
id ftdatacite:10.1594/pangaea.834701
record_format openpolar
spelling ftdatacite:10.1594/pangaea.834701 2024-04-28T08:24:20+00:00 Chronology and petrology in MIS4-2 of DSDP Site 94-609 ... Obrochta, Stephen P Miyahara, Hiroko Yokoyama, Yusuke Crowley, Thomas J 2012 application/zip https://dx.doi.org/10.1594/pangaea.834701 https://doi.pangaea.de/10.1594/PANGAEA.834701 en eng PANGAEA https://dx.doi.org/10.1016/j.quascirev.2012.08.008 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Deep Sea Drilling Project DSDP article Supplementary Publication Series of Datasets Collection 2012 ftdatacite https://doi.org/10.1594/pangaea.83470110.1016/j.quascirev.2012.08.008 2024-04-02T10:00:39Z Ice-rafting evidence for a '1500-year cycle' sparked considerable debate on millennial-scale climate change and the role of solar variability. Here, we reinterpret the last 70,000 years of the subpolar North Atlantic record, focusing on classic DSDP Site 609, in the context of newly available raw data, the latest radiocarbon calibration (Marine09) and ice core chronology (GICC05), and a wider range of statistical methodologies. A ~1500-year oscillation is primarily limited to the short glacial Stage 4, the age of which is derived solely from an ice flow model (ss09sea), subject to uncertainty, and offset most from the original chronology. Results from the most well-dated, younger interval suggest that the original 1500 ± 500 year cycle may actually be an admixture of the ~1000 and ~2000 cycles that are observed within the Holocene at multiple locations. In Holocene sections these variations are coherent with 14C and 10Be estimates of solar variability. Our new results suggest that the '1500-year cycle' may ... : Supplement to: Obrochta, Stephen P; Miyahara, Hiroko; Yokoyama, Yusuke; Crowley, Thomas J (2012): A re-examination of evidence for the North Atlantic “1500-year cycle” at Site 609. Quaternary Science Reviews, 55, 23-33 ... Article in Journal/Newspaper ice core North Atlantic DataCite Metadata Store (German National Library of Science and Technology)
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language English
topic Deep Sea Drilling Project DSDP
spellingShingle Deep Sea Drilling Project DSDP
Obrochta, Stephen P
Miyahara, Hiroko
Yokoyama, Yusuke
Crowley, Thomas J
Chronology and petrology in MIS4-2 of DSDP Site 94-609 ...
topic_facet Deep Sea Drilling Project DSDP
description Ice-rafting evidence for a '1500-year cycle' sparked considerable debate on millennial-scale climate change and the role of solar variability. Here, we reinterpret the last 70,000 years of the subpolar North Atlantic record, focusing on classic DSDP Site 609, in the context of newly available raw data, the latest radiocarbon calibration (Marine09) and ice core chronology (GICC05), and a wider range of statistical methodologies. A ~1500-year oscillation is primarily limited to the short glacial Stage 4, the age of which is derived solely from an ice flow model (ss09sea), subject to uncertainty, and offset most from the original chronology. Results from the most well-dated, younger interval suggest that the original 1500 ± 500 year cycle may actually be an admixture of the ~1000 and ~2000 cycles that are observed within the Holocene at multiple locations. In Holocene sections these variations are coherent with 14C and 10Be estimates of solar variability. Our new results suggest that the '1500-year cycle' may ... : Supplement to: Obrochta, Stephen P; Miyahara, Hiroko; Yokoyama, Yusuke; Crowley, Thomas J (2012): A re-examination of evidence for the North Atlantic “1500-year cycle” at Site 609. Quaternary Science Reviews, 55, 23-33 ...
format Article in Journal/Newspaper
author Obrochta, Stephen P
Miyahara, Hiroko
Yokoyama, Yusuke
Crowley, Thomas J
author_facet Obrochta, Stephen P
Miyahara, Hiroko
Yokoyama, Yusuke
Crowley, Thomas J
author_sort Obrochta, Stephen P
title Chronology and petrology in MIS4-2 of DSDP Site 94-609 ...
title_short Chronology and petrology in MIS4-2 of DSDP Site 94-609 ...
title_full Chronology and petrology in MIS4-2 of DSDP Site 94-609 ...
title_fullStr Chronology and petrology in MIS4-2 of DSDP Site 94-609 ...
title_full_unstemmed Chronology and petrology in MIS4-2 of DSDP Site 94-609 ...
title_sort chronology and petrology in mis4-2 of dsdp site 94-609 ...
publisher PANGAEA
publishDate 2012
url https://dx.doi.org/10.1594/pangaea.834701
https://doi.pangaea.de/10.1594/PANGAEA.834701
genre ice core
North Atlantic
genre_facet ice core
North Atlantic
op_relation https://dx.doi.org/10.1016/j.quascirev.2012.08.008
op_rights Creative Commons Attribution 3.0 Unported
https://creativecommons.org/licenses/by/3.0/legalcode
cc-by-3.0
op_doi https://doi.org/10.1594/pangaea.83470110.1016/j.quascirev.2012.08.008
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