New sea ice estimates over the last 49ky in the southeast Indian Ocean sector of the Southern Ocean

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dc.contributor.authorArmand, LKen_AU
dc.contributor.authorQuilty, PGen_AU
dc.contributor.authorHoward, Wen_AU
dc.contributor.authorBurckle, Len_AU
dc.contributor.authorShemesh, Aen_AU
dc.contributor.authorCrosta, Xen_AU
dc.contributor.authorCortese, Gen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorFerry, Aen_AU
dc.date.accessioned2024-03-01T04:25:56Zen_AU
dc.date.available2024-03-01T04:25:56Zen_AU
dc.date.issued2012-08-05en_AU
dc.date.statistics2022-01-31en_AU
dc.description.abstractAlthough many Quaternary records have allowed the study of major glacial-interglacial change in the Southern Ocean, Holocene records from deep-sea cores are few and far between and are currently limited to the South Atlantic. Low sedimentation rates combined with deep seafloors, and the high-nutrient, low-chlorophyll nature of the Southern Ocean are all in part responsible for the lack of decadal-to-centennial resolution records in the open-ocean environment. Our study is focused on an array of sedimentological, micropalaeontological and geochemical analyses conducted on the first open-ocean, high-resolution core study of Quaternary-Holocene sea-ice variability in the Southeast Indian Ocean; Eltanin piston core 27–23. In this presentation the results of sea ice estimates derived from diatom remains and tied to other physical and geological proxies will reveal the change from a sea-ice covered glacial maximum and deglacial transition through to the modern day. We report evidence of several Holocene ice edge advance episodes out to 59◦S, inclusive of the Antarctic Climatic Reversal. The addition of this record to existing, lower-resolution, sea-ice histories from regional cores MD88-787 and SO136-111 and in context to modern oceanographic fronts enables scenarios of regional palaeoceanographic change to be refined.en_AU
dc.identifier.citationArmand, L., Quilty, P., Howard, W., Burckle, L., Shemesh, A., Crosta, X., Cortese, G., Fink, D., & Ferry, A. (2012). New sea ice estimates over the last 49ky in the southeast Indian Ocean sector of the Southern Ocean. Paper presented to the 34th International Geological Congress 2012, "Unearthing our Past and Future - Resourcing Tomorrow". 5-10 August 2012 . Brisbane, Australia. (pp. 2978).en_AU
dc.identifier.conferenceenddate2021-08-12en_AU
dc.identifier.conferencename34th International Geological Congress 2012, "Unearthing our Past and Future - Resourcing Tomorrow"en_AU
dc.identifier.conferenceplaceBrisbane, Australiaen_AU
dc.identifier.conferencestartdate2012-08-05en_AU
dc.identifier.otherGC124118en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15526en_AU
dc.language.isoenen_AU
dc.publisherAustralian Geosciences Councilen_AU
dc.subjectSeasen_AU
dc.subjectIceen_AU
dc.subjectIndian Oceanen_AU
dc.subjectGlaciersen_AU
dc.subjectQuaternary perioden_AU
dc.subjectEnvironmenten_AU
dc.subjectAntarcticaen_AU
dc.titleNew sea ice estimates over the last 49ky in the southeast Indian Ocean sector of the Southern Oceanen_AU
dc.typeConference Abstracten_AU
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