Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate
We present a 3.2 Myr record of stable isotopes and physical properties at IODP Site U1308 (reoccupation of DSDP Site 609) located within the ice-rafted detritus (IRD) belt of the North Atlantic. We compare the isotope and lithological proxies at Site U1308 with other North Atlantic records (e.g., si...
Published in: | Climate of the Past |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2016
|
Subjects: | |
Online Access: | https://doi.org/10.5194/cp-12-1805-2016 http://www.clim-past.net/12/1805/2016/cp-12-1805-2016.pdf https://doaj.org/article/064bccfc1686473d99b592ea83d5a537 |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:064bccfc1686473d99b592ea83d5a537 |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:064bccfc1686473d99b592ea83d5a537 2023-05-15T17:30:21+02:00 Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate D. A. Hodell J. E. T. Channell 2016-09-01 https://doi.org/10.5194/cp-12-1805-2016 http://www.clim-past.net/12/1805/2016/cp-12-1805-2016.pdf https://doaj.org/article/064bccfc1686473d99b592ea83d5a537 en eng Copernicus Publications 1814-9324 1814-9332 doi:10.5194/cp-12-1805-2016 http://www.clim-past.net/12/1805/2016/cp-12-1805-2016.pdf https://doaj.org/article/064bccfc1686473d99b592ea83d5a537 undefined Climate of the Past, Vol 12, Iss 9, Pp 1805-1828 (2016) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.5194/cp-12-1805-2016 2023-01-22T18:19:04Z We present a 3.2 Myr record of stable isotopes and physical properties at IODP Site U1308 (reoccupation of DSDP Site 609) located within the ice-rafted detritus (IRD) belt of the North Atlantic. We compare the isotope and lithological proxies at Site U1308 with other North Atlantic records (e.g., sites 982, 607/U1313, and U1304) to reconstruct the history of orbital and millennial-scale climate variability during the Quaternary. The Site U1308 record documents a progressive increase in the intensity of Northern Hemisphere glacial–interglacial cycles during the late Pliocene and Quaternary, with mode transitions at ∼ 2.7, 1.5, 0.9, and 0.65 Ma. These transitions mark times of change in the growth and stability of Northern Hemisphere ice sheets. They also coincide with increases in vertical carbon isotope gradients between the intermediate and deep ocean, suggesting changes in deep carbon storage and atmospheric CO2. Orbital and millennial climate variability co-evolved during the Quaternary such that the trend towards larger and thicker ice sheets was accompanied by changes in the style, frequency, and intensity of millennial-scale variability. This co-evolution may be important for explaining the observed patterns of Quaternary climate change. Article in Journal/Newspaper North Atlantic Unknown Climate of the Past 12 9 1805 1828 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir D. A. Hodell J. E. T. Channell Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate |
topic_facet |
geo envir |
description |
We present a 3.2 Myr record of stable isotopes and physical properties at IODP Site U1308 (reoccupation of DSDP Site 609) located within the ice-rafted detritus (IRD) belt of the North Atlantic. We compare the isotope and lithological proxies at Site U1308 with other North Atlantic records (e.g., sites 982, 607/U1313, and U1304) to reconstruct the history of orbital and millennial-scale climate variability during the Quaternary. The Site U1308 record documents a progressive increase in the intensity of Northern Hemisphere glacial–interglacial cycles during the late Pliocene and Quaternary, with mode transitions at ∼ 2.7, 1.5, 0.9, and 0.65 Ma. These transitions mark times of change in the growth and stability of Northern Hemisphere ice sheets. They also coincide with increases in vertical carbon isotope gradients between the intermediate and deep ocean, suggesting changes in deep carbon storage and atmospheric CO2. Orbital and millennial climate variability co-evolved during the Quaternary such that the trend towards larger and thicker ice sheets was accompanied by changes in the style, frequency, and intensity of millennial-scale variability. This co-evolution may be important for explaining the observed patterns of Quaternary climate change. |
format |
Article in Journal/Newspaper |
author |
D. A. Hodell J. E. T. Channell |
author_facet |
D. A. Hodell J. E. T. Channell |
author_sort |
D. A. Hodell |
title |
Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate |
title_short |
Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate |
title_full |
Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate |
title_fullStr |
Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate |
title_full_unstemmed |
Mode transitions in Northern Hemisphere glaciation: co-evolution of millennial and orbital variability in Quaternary climate |
title_sort |
mode transitions in northern hemisphere glaciation: co-evolution of millennial and orbital variability in quaternary climate |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/cp-12-1805-2016 http://www.clim-past.net/12/1805/2016/cp-12-1805-2016.pdf https://doaj.org/article/064bccfc1686473d99b592ea83d5a537 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Climate of the Past, Vol 12, Iss 9, Pp 1805-1828 (2016) |
op_relation |
1814-9324 1814-9332 doi:10.5194/cp-12-1805-2016 http://www.clim-past.net/12/1805/2016/cp-12-1805-2016.pdf https://doaj.org/article/064bccfc1686473d99b592ea83d5a537 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-12-1805-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
9 |
container_start_page |
1805 |
op_container_end_page |
1828 |
_version_ |
1766126715280556032 |