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- Publisher Website: 10.1038/nature02338
- Scopus: eid_2-s2.0-1442280717
- PMID: 14973481
- WOS: WOS:000189026000039
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Article: High-latitude influence on the eastern equatorial Pacific climate in the early Pleistocene epoch
Title | High-latitude influence on the eastern equatorial Pacific climate in the early Pleistocene epoch |
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Authors | |
Issue Date | 2004 |
Publisher | Nature Publishing Group. The Journal's web site is located at http://www.nature.com/nature |
Citation | Nature, 2004, v. 427 n. 6976, p. 720-723 How to Cite? |
Abstract | Many records of tropical sea surface temperature and marine productivity exhibit cycles of 23 kyr (orbital precession) and 100 kyr during the past 0.5 Myr (refs 1-5), whereas high-latitude sea surface temperature records display much more pronounced obliquity cycles at a period of about 41 kyr (ref. 6). Little is known, however, about tropical climate variability before the mid-Pleistocene transition about 900 kyr ago, which marks the change from a climate dominated by 41-kyr cycles (when ice-age cycles and high-latitude sea surface temperature variations were dictated by changes in the Earth's obliquity) to the more recent 100-kyr cycles of ice ages. Here we analyse alkenones from marine sediments in the eastern equatorial Pacific Ocean to reconstruct sea surface temperatures and marine productivity over the past 1.8 Myr. We find that both records are dominated by the 41-kyr obliquity cycles between 1.8 and 1.2 Myr ago, with a relatively small contribution from orbital precession, and that early Pleistocene sea surface temperatures varied in the opposite sense to local annual insolation in the eastern equatorial Pacific Ocean. We conclude that during the early Pleistocene epoch, climate variability at our study site must have been determined by high-latitude processes that were driven by orbital obliquity forcing. |
Persistent Identifier | http://hdl.handle.net/10722/151137 |
ISSN | 2021 Impact Factor: 69.504 2020 SCImago Journal Rankings: 15.993 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Liu, Z | en_US |
dc.contributor.author | Herbert, TO | en_US |
dc.date.accessioned | 2012-06-26T06:17:34Z | - |
dc.date.available | 2012-06-26T06:17:34Z | - |
dc.date.issued | 2004 | en_US |
dc.identifier.citation | Nature, 2004, v. 427 n. 6976, p. 720-723 | en_US |
dc.identifier.issn | 0028-0836 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/151137 | - |
dc.description.abstract | Many records of tropical sea surface temperature and marine productivity exhibit cycles of 23 kyr (orbital precession) and 100 kyr during the past 0.5 Myr (refs 1-5), whereas high-latitude sea surface temperature records display much more pronounced obliquity cycles at a period of about 41 kyr (ref. 6). Little is known, however, about tropical climate variability before the mid-Pleistocene transition about 900 kyr ago, which marks the change from a climate dominated by 41-kyr cycles (when ice-age cycles and high-latitude sea surface temperature variations were dictated by changes in the Earth's obliquity) to the more recent 100-kyr cycles of ice ages. Here we analyse alkenones from marine sediments in the eastern equatorial Pacific Ocean to reconstruct sea surface temperatures and marine productivity over the past 1.8 Myr. We find that both records are dominated by the 41-kyr obliquity cycles between 1.8 and 1.2 Myr ago, with a relatively small contribution from orbital precession, and that early Pleistocene sea surface temperatures varied in the opposite sense to local annual insolation in the eastern equatorial Pacific Ocean. We conclude that during the early Pleistocene epoch, climate variability at our study site must have been determined by high-latitude processes that were driven by orbital obliquity forcing. | en_US |
dc.language | eng | en_US |
dc.publisher | Nature Publishing Group. The Journal's web site is located at http://www.nature.com/nature | en_US |
dc.relation.ispartof | Nature | en_US |
dc.subject.mesh | Alkenes - Analysis | en_US |
dc.subject.mesh | Climate | en_US |
dc.subject.mesh | Eukaryota - Metabolism | en_US |
dc.subject.mesh | Geologic Sediments - Chemistry | en_US |
dc.subject.mesh | Ice | en_US |
dc.subject.mesh | Marine Biology | en_US |
dc.subject.mesh | Pacific Ocean | en_US |
dc.subject.mesh | Seawater - Microbiology | en_US |
dc.subject.mesh | Temperature | en_US |
dc.subject.mesh | Time Factors | en_US |
dc.title | High-latitude influence on the eastern equatorial Pacific climate in the early Pleistocene epoch | en_US |
dc.type | Article | en_US |
dc.identifier.email | Liu, Z:zhliu@hku.hk | en_US |
dc.identifier.authority | Liu, Z=rp00750 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1038/nature02338 | en_US |
dc.identifier.pmid | 14973481 | - |
dc.identifier.scopus | eid_2-s2.0-1442280717 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-1442280717&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 427 | en_US |
dc.identifier.issue | 6976 | en_US |
dc.identifier.spage | 720 | en_US |
dc.identifier.epage | 723 | en_US |
dc.identifier.isi | WOS:000189026000039 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Liu, Z=16177844800 | en_US |
dc.identifier.scopusauthorid | Herbert, TO=7005866440 | en_US |
dc.identifier.issnl | 0028-0836 | - |