Environmental analyses of cyclic Middle Eocene sediments and palynomorph records of ODP Hole 189-1172A
The influence of orbital precession on early Paleogene climate and ocean circulation patterns in the southeast Pacific region is investigated by combining environmental analyses of cyclic Middle Eocene sediments and palynomorph records recovered from ODP Hole 1172A on the East Tasman Plateau with cl...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.811708 2024-09-15T17:48:02+00:00 Environmental analyses of cyclic Middle Eocene sediments and palynomorph records of ODP Hole 189-1172A Warnaar, Jeroen Bijl, Peter K Huber, Matthew Sloan, Lisa Brinkhuis, Henk Röhl, Ursula Sriver, Ryan Visscher, Henk LATITUDE: -43.959750 * LONGITUDE: 149.928260 * DATE/TIME START: 2000-04-22T06:45:00 * DATE/TIME END: 2000-04-26T09:30:00 2009 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.811708 https://doi.org/10.1594/PANGAEA.811708 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.811708 https://doi.org/10.1594/PANGAEA.811708 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Warnaar, Jeroen; Bijl, Peter K; Huber, Matthew; Sloan, Lisa; Brinkhuis, Henk; Röhl, Ursula; Sriver, Ryan; Visscher, Henk (2009): Orbitally forced climate changes in the Tasman sector during the Middle Eocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 280(3-4), 361-370, https://doi.org/10.1016/j.palaeo.2009.06.023 Ocean Drilling Program ODP dataset publication series 2009 ftpangaea https://doi.org/10.1594/PANGAEA.81170810.1016/j.palaeo.2009.06.023 2024-07-24T02:31:21Z The influence of orbital precession on early Paleogene climate and ocean circulation patterns in the southeast Pacific region is investigated by combining environmental analyses of cyclic Middle Eocene sediments and palynomorph records recovered from ODP Hole 1172A on the East Tasman Plateau with climate model simulations. Integration of results indicates that in the marine realm, direct effects of precessional forcing are not pronounced, although increased precipitation/runoff could have enhanced dinoflagellate cyst production. On the southeast Australian continent, the most pronounced effects of precessional forcing were fluctuations in summer precipitation and temperature on the Antarctic Margin. These fluctuations resulted in vegetational changes, most notably in the distribution of Nothofagus (subgenus Brassospora). The climate model results suggest significant fluctuations in sea ice in the Ross Sea, notably during Austral summers. This is consistent with the influx of Antarctic heterotrophic dinoflagellates in the early part of the studied record. The data demonstrate a strong precessionally driven climate variability and thus support the concept that precessional forcing could have played a role in early Antarctic glaciation via changes in runoff and/or precipitation. Other/Unknown Material Antarc* Antarctic Ross Sea Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(149.928260,149.928260,-43.959750,-43.959750) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Ocean Drilling Program ODP |
spellingShingle |
Ocean Drilling Program ODP Warnaar, Jeroen Bijl, Peter K Huber, Matthew Sloan, Lisa Brinkhuis, Henk Röhl, Ursula Sriver, Ryan Visscher, Henk Environmental analyses of cyclic Middle Eocene sediments and palynomorph records of ODP Hole 189-1172A |
topic_facet |
Ocean Drilling Program ODP |
description |
The influence of orbital precession on early Paleogene climate and ocean circulation patterns in the southeast Pacific region is investigated by combining environmental analyses of cyclic Middle Eocene sediments and palynomorph records recovered from ODP Hole 1172A on the East Tasman Plateau with climate model simulations. Integration of results indicates that in the marine realm, direct effects of precessional forcing are not pronounced, although increased precipitation/runoff could have enhanced dinoflagellate cyst production. On the southeast Australian continent, the most pronounced effects of precessional forcing were fluctuations in summer precipitation and temperature on the Antarctic Margin. These fluctuations resulted in vegetational changes, most notably in the distribution of Nothofagus (subgenus Brassospora). The climate model results suggest significant fluctuations in sea ice in the Ross Sea, notably during Austral summers. This is consistent with the influx of Antarctic heterotrophic dinoflagellates in the early part of the studied record. The data demonstrate a strong precessionally driven climate variability and thus support the concept that precessional forcing could have played a role in early Antarctic glaciation via changes in runoff and/or precipitation. |
format |
Other/Unknown Material |
author |
Warnaar, Jeroen Bijl, Peter K Huber, Matthew Sloan, Lisa Brinkhuis, Henk Röhl, Ursula Sriver, Ryan Visscher, Henk |
author_facet |
Warnaar, Jeroen Bijl, Peter K Huber, Matthew Sloan, Lisa Brinkhuis, Henk Röhl, Ursula Sriver, Ryan Visscher, Henk |
author_sort |
Warnaar, Jeroen |
title |
Environmental analyses of cyclic Middle Eocene sediments and palynomorph records of ODP Hole 189-1172A |
title_short |
Environmental analyses of cyclic Middle Eocene sediments and palynomorph records of ODP Hole 189-1172A |
title_full |
Environmental analyses of cyclic Middle Eocene sediments and palynomorph records of ODP Hole 189-1172A |
title_fullStr |
Environmental analyses of cyclic Middle Eocene sediments and palynomorph records of ODP Hole 189-1172A |
title_full_unstemmed |
Environmental analyses of cyclic Middle Eocene sediments and palynomorph records of ODP Hole 189-1172A |
title_sort |
environmental analyses of cyclic middle eocene sediments and palynomorph records of odp hole 189-1172a |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.811708 https://doi.org/10.1594/PANGAEA.811708 |
op_coverage |
LATITUDE: -43.959750 * LONGITUDE: 149.928260 * DATE/TIME START: 2000-04-22T06:45:00 * DATE/TIME END: 2000-04-26T09:30:00 |
long_lat |
ENVELOPE(149.928260,149.928260,-43.959750,-43.959750) |
genre |
Antarc* Antarctic Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Ross Sea Sea ice |
op_source |
Supplement to: Warnaar, Jeroen; Bijl, Peter K; Huber, Matthew; Sloan, Lisa; Brinkhuis, Henk; Röhl, Ursula; Sriver, Ryan; Visscher, Henk (2009): Orbitally forced climate changes in the Tasman sector during the Middle Eocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 280(3-4), 361-370, https://doi.org/10.1016/j.palaeo.2009.06.023 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.811708 https://doi.org/10.1594/PANGAEA.811708 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.81170810.1016/j.palaeo.2009.06.023 |
_version_ |
1810288761736527872 |