Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14
Progress Code: completed Purpose This data set allows reconstruction of past ice sheet variability and the geological and chemical characteristics can be used to determine the subglacial geology beneath the ice sheet. IBRD flux is an effective measure of ice sheet variability and can be used to cons...
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Online Access: | https://researchdata.edu.au/iceberg-rafted-debris-slope-a042kc14/2819640 |
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ftands:oai:ands.org.au::2819640 2023-10-09T21:47:11+02:00 Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14 Spatial: westlimit=109.74805; southlimit=-66.53854; eastlimit=125.0957; northlimit=-63.30854 Temporal: From 2016-07-01 to 2019-06-30 https://researchdata.edu.au/iceberg-rafted-debris-slope-a042kc14/2819640 unknown Australian Ocean Data Network https://researchdata.edu.au/iceberg-rafted-debris-slope-a042kc14/2819640 AAS_4419_KC14_IBRDFlux Dataset DOI AU/AADC > Australian Antarctic Data Centre, Australia geoscientificInformation oceans EARTH SCIENCE > OCEANS > SEA ICE > ICEBERGS CRYOSPHERE > MARINE SEDIMENTS > SEDIMENT TRANSPORT SEDIMENT COMPOSITION ICEBERG RAFTED DEBRIS SEDIMENTOLOGY RV INVESTIGATOR ICEBERG RAFTED DEBRIS FLUX SEDIMENT CORERS SHIPS LABORATORY Palaeo Start Date 2 ka Palaeo Stop Date 25 ka PHANEROZOIC > CENOZOIC > QUATERNARY > HOLOCENE AMD/AU AMD CEOS CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN > SABRINA CONTINENTAL SLOPE GEOGRAPHIC REGION > POLAR dataset ftands 2023-09-18T22:45:51Z Progress Code: completed Purpose This data set allows reconstruction of past ice sheet variability and the geological and chemical characteristics can be used to determine the subglacial geology beneath the ice sheet. IBRD flux is an effective measure of ice sheet variability and can be used to constrain melting events. Ice-rafted debris is characterised by coarse material with typically angular grains, transported within ice flows and icebergs and deposited on marine continental shelves and into deep sedimentary basins Ice-rafted debris is characterised by coarse material with typically angular grains, transported within icebergs and deposted in the ocean as the icebergs melt. This iceberg rafted debris (IBRD) flux data submitted here, was calculated by quantifying the coarse sand fraction (CSF) as a percentage of the bulk sample (weight of grains in the 250 micron to 2 mm size fraction), the dry bulk density (DBD) and the linear sedimentation rate (LSR) (following Krissek et al., 1995, Patterson et al., 2014). A method for quantifying the IBRD flux uses the coarse sand fraction (CSF) as a percentage of the bulk sample, dry bulk density (DBD) and the linear sedimentation rate (LSR) (Krissek et al., 1995, Patterson et al., 2014): The CSF (250μm-2mm) was acquired from samples at 10cm intervals along KC14 by wet-sieving approximately 20g of sediment per sample. Authigenic grains and microfossils were removed from the samples under a microscope. The remaining material was weighed on a microbalance and calculated as a percentage of the bulk sample. The DBD was calculated by subsampling approximately 8cm3 of sediment from the same depth intervals and dividing the dry weight of the sediment by the volume of the subsampler. The LSR was approximated by dividing the distance (cm) between the calibrated bulk carbon ages by the difference in time (kyr). The IBRD flux was then quantified using the above equation for each depth interval. Dataset Antarc* Antarctica Ice Sheet Sea ice Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
geoscientificInformation oceans EARTH SCIENCE > OCEANS > SEA ICE > ICEBERGS CRYOSPHERE > MARINE SEDIMENTS > SEDIMENT TRANSPORT SEDIMENT COMPOSITION ICEBERG RAFTED DEBRIS SEDIMENTOLOGY RV INVESTIGATOR ICEBERG RAFTED DEBRIS FLUX SEDIMENT CORERS SHIPS LABORATORY Palaeo Start Date 2 ka Palaeo Stop Date 25 ka PHANEROZOIC > CENOZOIC > QUATERNARY > HOLOCENE AMD/AU AMD CEOS CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN > SABRINA CONTINENTAL SLOPE GEOGRAPHIC REGION > POLAR |
spellingShingle |
geoscientificInformation oceans EARTH SCIENCE > OCEANS > SEA ICE > ICEBERGS CRYOSPHERE > MARINE SEDIMENTS > SEDIMENT TRANSPORT SEDIMENT COMPOSITION ICEBERG RAFTED DEBRIS SEDIMENTOLOGY RV INVESTIGATOR ICEBERG RAFTED DEBRIS FLUX SEDIMENT CORERS SHIPS LABORATORY Palaeo Start Date 2 ka Palaeo Stop Date 25 ka PHANEROZOIC > CENOZOIC > QUATERNARY > HOLOCENE AMD/AU AMD CEOS CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN > SABRINA CONTINENTAL SLOPE GEOGRAPHIC REGION > POLAR Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14 |
topic_facet |
geoscientificInformation oceans EARTH SCIENCE > OCEANS > SEA ICE > ICEBERGS CRYOSPHERE > MARINE SEDIMENTS > SEDIMENT TRANSPORT SEDIMENT COMPOSITION ICEBERG RAFTED DEBRIS SEDIMENTOLOGY RV INVESTIGATOR ICEBERG RAFTED DEBRIS FLUX SEDIMENT CORERS SHIPS LABORATORY Palaeo Start Date 2 ka Palaeo Stop Date 25 ka PHANEROZOIC > CENOZOIC > QUATERNARY > HOLOCENE AMD/AU AMD CEOS CONTINENT > ANTARCTICA OCEAN > SOUTHERN OCEAN > SABRINA CONTINENTAL SLOPE GEOGRAPHIC REGION > POLAR |
description |
Progress Code: completed Purpose This data set allows reconstruction of past ice sheet variability and the geological and chemical characteristics can be used to determine the subglacial geology beneath the ice sheet. IBRD flux is an effective measure of ice sheet variability and can be used to constrain melting events. Ice-rafted debris is characterised by coarse material with typically angular grains, transported within ice flows and icebergs and deposited on marine continental shelves and into deep sedimentary basins Ice-rafted debris is characterised by coarse material with typically angular grains, transported within icebergs and deposted in the ocean as the icebergs melt. This iceberg rafted debris (IBRD) flux data submitted here, was calculated by quantifying the coarse sand fraction (CSF) as a percentage of the bulk sample (weight of grains in the 250 micron to 2 mm size fraction), the dry bulk density (DBD) and the linear sedimentation rate (LSR) (following Krissek et al., 1995, Patterson et al., 2014). A method for quantifying the IBRD flux uses the coarse sand fraction (CSF) as a percentage of the bulk sample, dry bulk density (DBD) and the linear sedimentation rate (LSR) (Krissek et al., 1995, Patterson et al., 2014): The CSF (250μm-2mm) was acquired from samples at 10cm intervals along KC14 by wet-sieving approximately 20g of sediment per sample. Authigenic grains and microfossils were removed from the samples under a microscope. The remaining material was weighed on a microbalance and calculated as a percentage of the bulk sample. The DBD was calculated by subsampling approximately 8cm3 of sediment from the same depth intervals and dividing the dry weight of the sediment by the volume of the subsampler. The LSR was approximated by dividing the distance (cm) between the calibrated bulk carbon ages by the difference in time (kyr). The IBRD flux was then quantified using the above equation for each depth interval. |
format |
Dataset |
title |
Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14 |
title_short |
Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14 |
title_full |
Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14 |
title_fullStr |
Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14 |
title_full_unstemmed |
Iceberg rafted debris flux on the Sabrina continental slope - for A042_KC14 |
title_sort |
iceberg rafted debris flux on the sabrina continental slope - for a042_kc14 |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.edu.au/iceberg-rafted-debris-slope-a042kc14/2819640 |
op_coverage |
Spatial: westlimit=109.74805; southlimit=-66.53854; eastlimit=125.0957; northlimit=-63.30854 Temporal: From 2016-07-01 to 2019-06-30 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Antarc* Antarctica Ice Sheet Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctica Ice Sheet Sea ice Southern Ocean |
op_source |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/iceberg-rafted-debris-slope-a042kc14/2819640 AAS_4419_KC14_IBRDFlux Dataset DOI |
_version_ |
1779310041799589888 |