Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3
We present a high-resolution (∼ 60–110 yr) multi-proxy record spanning Marine Isotope Stage 3 from IMAGES Core MD01-2378 (13°04.95′ S and 121°47.27′ E, 1783 m water depth), located in the Timor Sea, off NW Australia. Today, this area is influenced by the Intertropical Convergence Zone, which drives...
Published in: | Marine Micropaleontology |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2008
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/1373/ https://oceanrep.geomar.de/id/eprint/1373/1/450_Holbourn_2008_CentennialscaleClimateVariabilityInThe_Artzeit_pubid11105.pdf https://doi.org/10.1016/j.marmicro.2007.10.002 |
id |
ftoceanrep:oai:oceanrep.geomar.de:1373 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:1373 2023-05-15T13:41:20+02:00 Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3 Dürkop, Anke Holbourn, Ann Kuhnt, Wolfgang Zuraida, Rina Andersen, Nils Grootes, Pieter M. 2008 text https://oceanrep.geomar.de/id/eprint/1373/ https://oceanrep.geomar.de/id/eprint/1373/1/450_Holbourn_2008_CentennialscaleClimateVariabilityInThe_Artzeit_pubid11105.pdf https://doi.org/10.1016/j.marmicro.2007.10.002 en eng Elsevier https://oceanrep.geomar.de/id/eprint/1373/1/450_Holbourn_2008_CentennialscaleClimateVariabilityInThe_Artzeit_pubid11105.pdf Dürkop, A., Holbourn, A., Kuhnt, W., Zuraida, R., Andersen, N. and Grootes, P. M. (2008) Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3. Marine Micropaleontology, 66 (3/4). pp. 208-221. DOI 10.1016/j.marmicro.2007.10.002 <https://doi.org/10.1016/j.marmicro.2007.10.002>. doi:10.1016/j.marmicro.2007.10.002 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2008 ftoceanrep https://doi.org/10.1016/j.marmicro.2007.10.002 2023-04-07T14:43:52Z We present a high-resolution (∼ 60–110 yr) multi-proxy record spanning Marine Isotope Stage 3 from IMAGES Core MD01-2378 (13°04.95′ S and 121°47.27′ E, 1783 m water depth), located in the Timor Sea, off NW Australia. Today, this area is influenced by the Intertropical Convergence Zone, which drives monsoonal winds during austral summer and by the main outflow of the Indonesian Throughflow, which represents a key component of the global thermohaline circulation system. Thus, this core is ideally situated to monitor the linkages between tropical and high latitude climate variability. Benthic δ18O data (Planulina wuellerstorfi) clearly reflect Antarctic warm events (A1–A4) as recorded by the EPICA Byrd and Dronning Maud Land ice cores. This southern high latitude signal is transferred by deep and intermediate water masses flowing northward from the Southern Ocean into the Indian Ocean. Planktonic δ18O shows closer affinity to northern high latitudes planktonic and ice core records, although only the longer-lasting Dansgaard–Oeschger warm events, 8, 12, 14, and 16–17 are clearly expressed in our record. This northern high latitude signal in the surface water is probably transmitted through atmospheric teleconnections and coupling of the Asian–Australian monsoon systems. Benthic foraminiferal census counts suggest a coupling of Antarctic cooling with carbon flux patterns in the Timor Sea. We relate increasing abundances of carbon-flux sensitive species at 38–45 ka to the northeastward migration of the West Australian Current frontal area. This water mass reorganization is also supported by concurrent decreases in Mg/Ca and planktonic δ18O values (Globigerinoides ruber white). Article in Journal/Newspaper Antarc* Antarctic Dronning Maud Land EPICA ice core Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Austral Byrd Dronning Maud Land Indian Southern Ocean Marine Micropaleontology 66 3-4 208 221 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
We present a high-resolution (∼ 60–110 yr) multi-proxy record spanning Marine Isotope Stage 3 from IMAGES Core MD01-2378 (13°04.95′ S and 121°47.27′ E, 1783 m water depth), located in the Timor Sea, off NW Australia. Today, this area is influenced by the Intertropical Convergence Zone, which drives monsoonal winds during austral summer and by the main outflow of the Indonesian Throughflow, which represents a key component of the global thermohaline circulation system. Thus, this core is ideally situated to monitor the linkages between tropical and high latitude climate variability. Benthic δ18O data (Planulina wuellerstorfi) clearly reflect Antarctic warm events (A1–A4) as recorded by the EPICA Byrd and Dronning Maud Land ice cores. This southern high latitude signal is transferred by deep and intermediate water masses flowing northward from the Southern Ocean into the Indian Ocean. Planktonic δ18O shows closer affinity to northern high latitudes planktonic and ice core records, although only the longer-lasting Dansgaard–Oeschger warm events, 8, 12, 14, and 16–17 are clearly expressed in our record. This northern high latitude signal in the surface water is probably transmitted through atmospheric teleconnections and coupling of the Asian–Australian monsoon systems. Benthic foraminiferal census counts suggest a coupling of Antarctic cooling with carbon flux patterns in the Timor Sea. We relate increasing abundances of carbon-flux sensitive species at 38–45 ka to the northeastward migration of the West Australian Current frontal area. This water mass reorganization is also supported by concurrent decreases in Mg/Ca and planktonic δ18O values (Globigerinoides ruber white). |
format |
Article in Journal/Newspaper |
author |
Dürkop, Anke Holbourn, Ann Kuhnt, Wolfgang Zuraida, Rina Andersen, Nils Grootes, Pieter M. |
spellingShingle |
Dürkop, Anke Holbourn, Ann Kuhnt, Wolfgang Zuraida, Rina Andersen, Nils Grootes, Pieter M. Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3 |
author_facet |
Dürkop, Anke Holbourn, Ann Kuhnt, Wolfgang Zuraida, Rina Andersen, Nils Grootes, Pieter M. |
author_sort |
Dürkop, Anke |
title |
Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3 |
title_short |
Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3 |
title_full |
Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3 |
title_fullStr |
Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3 |
title_full_unstemmed |
Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3 |
title_sort |
centennial-scale climate variability in the timor sea during marine isotope stage 3 |
publisher |
Elsevier |
publishDate |
2008 |
url |
https://oceanrep.geomar.de/id/eprint/1373/ https://oceanrep.geomar.de/id/eprint/1373/1/450_Holbourn_2008_CentennialscaleClimateVariabilityInThe_Artzeit_pubid11105.pdf https://doi.org/10.1016/j.marmicro.2007.10.002 |
geographic |
Antarctic Austral Byrd Dronning Maud Land Indian Southern Ocean |
geographic_facet |
Antarctic Austral Byrd Dronning Maud Land Indian Southern Ocean |
genre |
Antarc* Antarctic Dronning Maud Land EPICA ice core Southern Ocean |
genre_facet |
Antarc* Antarctic Dronning Maud Land EPICA ice core Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/1373/1/450_Holbourn_2008_CentennialscaleClimateVariabilityInThe_Artzeit_pubid11105.pdf Dürkop, A., Holbourn, A., Kuhnt, W., Zuraida, R., Andersen, N. and Grootes, P. M. (2008) Centennial-scale climate variability in the Timor Sea during Marine Isotope Stage 3. Marine Micropaleontology, 66 (3/4). pp. 208-221. DOI 10.1016/j.marmicro.2007.10.002 <https://doi.org/10.1016/j.marmicro.2007.10.002>. doi:10.1016/j.marmicro.2007.10.002 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.marmicro.2007.10.002 |
container_title |
Marine Micropaleontology |
container_volume |
66 |
container_issue |
3-4 |
container_start_page |
208 |
op_container_end_page |
221 |
_version_ |
1766149621456830464 |