Historical February / September sea-ice concentration and annual sea-ice cover estimation at the location of core MD88-787 in the Southeast Indian Ocean
Variations in microfossil records in sediments over time are used as proxies for changes in the ocean. One important record determined from microfossils is sea-ice cover which influences, and is influenced by, wind and ocean circulation, atmospheric conditions, and heat balance. Increasing emphasis...
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ftands:oai:ands.org.au::1935573 2023-09-05T13:12:59+02:00 Historical February / September sea-ice concentration and annual sea-ice cover estimation at the location of core MD88-787 in the Southeast Indian Ocean Department of Biological Sciences, Macquarie University (isOwnedBy) Spatial: 145.0,-56.5 145.5,-56.5 145.5,-56.0 145.0,-56.0 145.0,-56.5 Spatial: true https://researchdata.edu.au/historical-february-september-indian-ocean/1935573 http://data.gov.au/dataset/074bdd54-6206-48d8-b0a1-7d6714d580de unknown data.gov.au https://researchdata.edu.au/historical-february-september-indian-ocean/1935573 http://data.gov.au/dataset/074bdd54-6206-48d8-b0a1-7d6714d580de historical-february-september-sea-ice-concentration-and-annual-sea-ice-cover-estimation-at-the- Department of Biological Sciences, Macquarie University Biosphere Cryosphere Diatoms Ice Extent Microbiota Oceans Sea Ice Sea Ice Concentration dataset ftands 2023-08-14T23:01:47Z Variations in microfossil records in sediments over time are used as proxies for changes in the ocean. One important record determined from microfossils is sea-ice cover which influences, and is influenced by, wind and ocean circulation, atmospheric conditions, and heat balance. Increasing emphasis is being placed on the predictive capabilities diatoms may bear in estimating Antarctic sea-ice, one of the important modulators of Southern Hemisphere climate. The purpose of this study was to estimate past sea-ice concentration and annual coverage at the site of core MD88-787 in the Southeast Indian Ocean. The accumulation of diatom microplankton assemblages in sediments being the proxy for these records of climatic change. \n\nA new method for sea-ice concentration and cover estimation from CABFAC derived factor analysis was developed during this project. Previous estimations of sea-ice have relied on other avenues of deriving limits to the maximum sea-ice edge, while the model developed here made use of modern sea-ice satellite observations combined with diatom distributions that are considered more closely linked to the sea-ice cover.\n\nThree models were proposed which estimated sea-ice concentration in February and September, and annual sea-ice cover. App 3-2.pdf - App_6-8__787.pdf - App 6-6 787.pdf - aodn:bluenet_datasets_southern_indian_ocean - Core Data – Southern and Indian Ocean http://gcmd.nasa.gov/Resources/valids/keyword_list.html - Dataset Antarc* Antarctic Sea ice Research Data Australia (Australian National Data Service - ANDS) Antarctic Indian |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
Biosphere Cryosphere Diatoms Ice Extent Microbiota Oceans Sea Ice Sea Ice Concentration |
spellingShingle |
Biosphere Cryosphere Diatoms Ice Extent Microbiota Oceans Sea Ice Sea Ice Concentration Historical February / September sea-ice concentration and annual sea-ice cover estimation at the location of core MD88-787 in the Southeast Indian Ocean |
topic_facet |
Biosphere Cryosphere Diatoms Ice Extent Microbiota Oceans Sea Ice Sea Ice Concentration |
description |
Variations in microfossil records in sediments over time are used as proxies for changes in the ocean. One important record determined from microfossils is sea-ice cover which influences, and is influenced by, wind and ocean circulation, atmospheric conditions, and heat balance. Increasing emphasis is being placed on the predictive capabilities diatoms may bear in estimating Antarctic sea-ice, one of the important modulators of Southern Hemisphere climate. The purpose of this study was to estimate past sea-ice concentration and annual coverage at the site of core MD88-787 in the Southeast Indian Ocean. The accumulation of diatom microplankton assemblages in sediments being the proxy for these records of climatic change. \n\nA new method for sea-ice concentration and cover estimation from CABFAC derived factor analysis was developed during this project. Previous estimations of sea-ice have relied on other avenues of deriving limits to the maximum sea-ice edge, while the model developed here made use of modern sea-ice satellite observations combined with diatom distributions that are considered more closely linked to the sea-ice cover.\n\nThree models were proposed which estimated sea-ice concentration in February and September, and annual sea-ice cover. App 3-2.pdf - App_6-8__787.pdf - App 6-6 787.pdf - aodn:bluenet_datasets_southern_indian_ocean - Core Data – Southern and Indian Ocean http://gcmd.nasa.gov/Resources/valids/keyword_list.html - |
author2 |
Department of Biological Sciences, Macquarie University (isOwnedBy) |
format |
Dataset |
title |
Historical February / September sea-ice concentration and annual sea-ice cover estimation at the location of core MD88-787 in the Southeast Indian Ocean |
title_short |
Historical February / September sea-ice concentration and annual sea-ice cover estimation at the location of core MD88-787 in the Southeast Indian Ocean |
title_full |
Historical February / September sea-ice concentration and annual sea-ice cover estimation at the location of core MD88-787 in the Southeast Indian Ocean |
title_fullStr |
Historical February / September sea-ice concentration and annual sea-ice cover estimation at the location of core MD88-787 in the Southeast Indian Ocean |
title_full_unstemmed |
Historical February / September sea-ice concentration and annual sea-ice cover estimation at the location of core MD88-787 in the Southeast Indian Ocean |
title_sort |
historical february / september sea-ice concentration and annual sea-ice cover estimation at the location of core md88-787 in the southeast indian ocean |
publisher |
data.gov.au |
url |
https://researchdata.edu.au/historical-february-september-indian-ocean/1935573 http://data.gov.au/dataset/074bdd54-6206-48d8-b0a1-7d6714d580de |
op_coverage |
Spatial: 145.0,-56.5 145.5,-56.5 145.5,-56.0 145.0,-56.0 145.0,-56.5 Spatial: true |
geographic |
Antarctic Indian |
geographic_facet |
Antarctic Indian |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_source |
Department of Biological Sciences, Macquarie University |
op_relation |
https://researchdata.edu.au/historical-february-september-indian-ocean/1935573 http://data.gov.au/dataset/074bdd54-6206-48d8-b0a1-7d6714d580de historical-february-september-sea-ice-concentration-and-annual-sea-ice-cover-estimation-at-the- |
_version_ |
1776202694728351744 |