Sea surface temperature reconstruction for the middle Miocene Southern Ocean
Magnesium/calcium data from Southern Ocean planktonic foraminifera demonstrate that high-latitude (~55°S) southwest Pacific sea surface temperatures (SSTs) cooled 6° to 7°C during the middle Miocene climate transition (14.2 to 13.8 million years ago). Stepwise surface cooling is paced by eccentricit...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2004
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.772059 https://doi.org/10.1594/PANGAEA.772059 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.772059 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.772059 2023-05-15T13:42:10+02:00 Sea surface temperature reconstruction for the middle Miocene Southern Ocean Shevenell, Amelia E Kennett, James P Lea, David W MEDIAN LATITUDE: -47.825340 * MEDIAN LONGITUDE: 147.580775 * SOUTH-BOUND LATITUDE: -48.499950 * WEST-BOUND LONGITUDE: 146.049800 * NORTH-BOUND LATITUDE: -47.150730 * EAST-BOUND LONGITUDE: 149.111750 * DATE/TIME START: 2000-03-31T08:30:00 * DATE/TIME END: 2000-04-14T21:00:00 2004-11-30 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.772059 https://doi.org/10.1594/PANGAEA.772059 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.772059 https://doi.org/10.1594/PANGAEA.772059 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Shevenell, Amelia E; Kennett, James P; Lea, David W (2004): Middle Miocene Southern Ocean cooling and Antarctic cryosphere expansion. Science, 305(5691), 1766-1770, https://doi.org/10.1126/science.1100061 189-1170A 189-1171C DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg189 Ocean Drilling Program ODP South Pacific Ocean Dataset 2004 ftpangaea https://doi.org/10.1594/PANGAEA.772059 https://doi.org/10.1126/science.1100061 2023-01-20T07:32:21Z Magnesium/calcium data from Southern Ocean planktonic foraminifera demonstrate that high-latitude (~55°S) southwest Pacific sea surface temperatures (SSTs) cooled 6° to 7°C during the middle Miocene climate transition (14.2 to 13.8 million years ago). Stepwise surface cooling is paced by eccentricity forcing and precedes Antarctic cryosphere expansion by ~60 thousand years, suggesting the involvement of additional feedbacks during this interval of inferred low-atmospheric partial pressure of CO2 (pCO2). Comparing SSTs and global carbon cycling proxies challenges the notion that episodic pCO2 drawdown drove this major Cenozoic climate transition. SST, salinity, and ice-volume trends suggest instead that orbitally paced ocean circulation changes altered meridional heat/vapor transport, triggering ice growth and global cooling. Dataset Antarc* Antarctic Planktonic foraminifera Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Indian Pacific Southern Ocean ENVELOPE(146.049800,149.111750,-47.150730,-48.499950) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
189-1170A 189-1171C DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg189 Ocean Drilling Program ODP South Pacific Ocean |
spellingShingle |
189-1170A 189-1171C DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg189 Ocean Drilling Program ODP South Pacific Ocean Shevenell, Amelia E Kennett, James P Lea, David W Sea surface temperature reconstruction for the middle Miocene Southern Ocean |
topic_facet |
189-1170A 189-1171C DRILL Drilling/drill rig Indian Ocean Joides Resolution Leg189 Ocean Drilling Program ODP South Pacific Ocean |
description |
Magnesium/calcium data from Southern Ocean planktonic foraminifera demonstrate that high-latitude (~55°S) southwest Pacific sea surface temperatures (SSTs) cooled 6° to 7°C during the middle Miocene climate transition (14.2 to 13.8 million years ago). Stepwise surface cooling is paced by eccentricity forcing and precedes Antarctic cryosphere expansion by ~60 thousand years, suggesting the involvement of additional feedbacks during this interval of inferred low-atmospheric partial pressure of CO2 (pCO2). Comparing SSTs and global carbon cycling proxies challenges the notion that episodic pCO2 drawdown drove this major Cenozoic climate transition. SST, salinity, and ice-volume trends suggest instead that orbitally paced ocean circulation changes altered meridional heat/vapor transport, triggering ice growth and global cooling. |
format |
Dataset |
author |
Shevenell, Amelia E Kennett, James P Lea, David W |
author_facet |
Shevenell, Amelia E Kennett, James P Lea, David W |
author_sort |
Shevenell, Amelia E |
title |
Sea surface temperature reconstruction for the middle Miocene Southern Ocean |
title_short |
Sea surface temperature reconstruction for the middle Miocene Southern Ocean |
title_full |
Sea surface temperature reconstruction for the middle Miocene Southern Ocean |
title_fullStr |
Sea surface temperature reconstruction for the middle Miocene Southern Ocean |
title_full_unstemmed |
Sea surface temperature reconstruction for the middle Miocene Southern Ocean |
title_sort |
sea surface temperature reconstruction for the middle miocene southern ocean |
publisher |
PANGAEA |
publishDate |
2004 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.772059 https://doi.org/10.1594/PANGAEA.772059 |
op_coverage |
MEDIAN LATITUDE: -47.825340 * MEDIAN LONGITUDE: 147.580775 * SOUTH-BOUND LATITUDE: -48.499950 * WEST-BOUND LONGITUDE: 146.049800 * NORTH-BOUND LATITUDE: -47.150730 * EAST-BOUND LONGITUDE: 149.111750 * DATE/TIME START: 2000-03-31T08:30:00 * DATE/TIME END: 2000-04-14T21:00:00 |
long_lat |
ENVELOPE(146.049800,149.111750,-47.150730,-48.499950) |
geographic |
Antarctic Indian Pacific Southern Ocean |
geographic_facet |
Antarctic Indian Pacific Southern Ocean |
genre |
Antarc* Antarctic Planktonic foraminifera Southern Ocean |
genre_facet |
Antarc* Antarctic Planktonic foraminifera Southern Ocean |
op_source |
Supplement to: Shevenell, Amelia E; Kennett, James P; Lea, David W (2004): Middle Miocene Southern Ocean cooling and Antarctic cryosphere expansion. Science, 305(5691), 1766-1770, https://doi.org/10.1126/science.1100061 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.772059 https://doi.org/10.1594/PANGAEA.772059 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.772059 https://doi.org/10.1126/science.1100061 |
_version_ |
1766164167482408960 |