Data

An 1135 year very high-resolution water isotope record of polar precipitation from the Indo-Pacific sector of East Antarctica

Australian Antarctic Division

Gkinis, V., Jackson, S., Abram, N.J., Curran, M., Blunier, T., Halan, M., Kjær, H.A., Moy, A., Peensoo, K.M., Quistgaard, T., Vance, T.R. and Vallelonga, P. ; GKINIS, VASILEIOS ; JACKSON, SARAH ; ABRAM, NERILIE J. ; CURRAN, MARK ; BLUNIER, THOMAS ; HARLAN, MARGARET ; KJÆR, HELLE A. ; MOY, ANDREW ; PEENSOO, KERTTU M. ; QUISTGAARD, THEA ; VANCE, TESSA ROSEMARY ; VALLELONGA, PAUL

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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.26179/ygeq-1a95&rft.title=An 1135 year very high-resolution water isotope record of polar precipitation from the Indo-Pacific sector of East Antarctica&rft.identifier=10.26179/ygeq-1a95&rft.publisher=Australian Antarctic Data Centre&rft.description=Abstract: This record contains dual water isotope measurements (δ18O, δD) of polar precipitation from the Mount Brown South ice core covering 1137 y of paleoclimate history at ultra high resolution. The coring site covers the poorly sampled Indo-Pacific sector of East Antarctica and with its relatively high annual accumulation (greater than 0.25 ma-1 ice eq.) constitutes a unique record of past climate variability. The record consists of two δ18O, δD sub-datasets. The first (mbs_water_isotopes_a) covers the top 104 m and is based on discrete sampling of the core at a resolution of 0.03 m. The second (mbs_water_isotopes_b) spans the depth range 93-294.7 m and contains very high resolution measurements performed with a Continuous Flow Analysis system (CFA) at a nominal resolution of 0.005 m. Both datasets employed Infra-Red Laser Spectroscopy techniques presenting state of the art metrics with respect to precision and accuracy. There are two data files in the download:1) mbs_water_isotopes_a.txt2) mbs_water_isotopes_b.txt1) Parameter(s): Depth, ice/snow [m] (Depth ice/snow)MBS2023 [a CE] (Date)d18, [‰ SMOW]dD, water [‰ SMOW] (δD H2O)sigma_d18, water [‰ SMOW]sigma_dD, water [‰ SMOW]Size: 40327 data points2) Parameter(s): Depth_Top, ice/snow [m] (Depth ice/snow)Depth_Mid, ice/snow [m] (Depth ice/snow)Depth_Bottom, ice/snow [m] (Depth ice/snow)MBS2023 [a CE] (Date)d18, [‰ SMOW]dD, water [‰ SMOW] (δD H2O)d18_precision, water [‰ SMOW]dD_precision, water [‰ SMOW]d18_accuracy, water [‰ SMOW]dD_accuracy, water [‰ SMOW] Size: 3339 data pointsMore information on the parameters is available in the download files.Progress Code: completed&rft.creator=Gkinis, V., Jackson, S., Abram, N.J., Curran, M., Blunier, T., Halan, M., Kjær, H.A., Moy, A., Peensoo, K.M., Quistgaard, T., Vance, T.R. and Vallelonga, P. &rft.creator=GKINIS, VASILEIOS &rft.creator=JACKSON, SARAH &rft.creator=ABRAM, NERILIE J. &rft.creator=CURRAN, MARK &rft.creator=BLUNIER, THOMAS &rft.creator=HARLAN, MARGARET &rft.creator=KJÆR, HELLE A. &rft.creator=MOY, ANDREW &rft.creator=PEENSOO, KERTTU M. &rft.creator=QUISTGAARD, THEA &rft.creator=VANCE, TESSA ROSEMARY &rft.creator=VALLELONGA, PAUL &rft.date=2023&rft.coverage=westlimit=86.312; southlimit=-69.112; eastlimit=86.313; northlimit=-69.111&rft.coverage=westlimit=86.312; southlimit=-69.112; eastlimit=86.313; northlimit=-69.111&rft.coverage=uplimit=2084; downlimit=2083&rft.coverage=uplimit=2084; downlimit=2083&rft.coverage=uplimit=294.712; downlimit=4.125&rft.coverage=uplimit=294.712; downlimit=4.125&rft_rights=These data are publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4414_Mt_Brown_Water_Isotopes_2023 when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=inlandWaters&rft_subject=EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > ICE CORE RECORDS > ISOTOPES&rft_subject=EARTH SCIENCE > PALEOCLIMATE > ICE CORE RECORDS > ISOTOPES&rft_subject=EARTH SCIENCE > PALEOCLIMATE > ICE CORE RECORDS&rft_subject=EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > ICE CORE RECORDS > ISOTOPES > OXYGEN ISOTOPES&rft_subject=DEUTERIUM&rft_subject=HIGH RESOLUTION&rft_subject=CONTINUOUS FLOW ANALYSIS&rft_subject=INFRARED LASER SPECTROSCOPY&rft_subject=CRDS > Cavity Ring-Down Spectroscopy&rft_subject=LABORATORY > LABORATORY&rft_subject=Palaeo Start Date 1077 ybp&rft_subject=Palaeo Stop Date -59 ybp&rft_subject=AMD&rft_subject=CEOS&rft_subject=AMD/AU&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=CONTINENT > ANTARCTICA > MOUNT BROWN SOUTH&rft_subject=CONTINENT > ANTARCTICA > PRINCESS ELIZABETH LAND&rft_subject=CONTINENT > ANTARCTICA > WILHELM II LAND&rft.type=dataset&rft.language=English Access the data

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Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are publicly available for download from the provided URL.

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4414_Mt_Brown_Water_Isotopes_2023 when using these data.

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Abstract:    This record contains dual water isotope measurements (δ18O, δD) of polar precipitation from the Mount Brown South ice core covering 1137 y of paleoclimate history at ultra high resolution. The coring site covers the poorly sampled Indo-Pacific sector of East Antarctica and with its relatively high annual accumulation (greater than 0.25 ma-1 ice eq.) constitutes a unique record of past climate variability. The record consists of two δ18O, δD sub-datasets. The first (mbs_water_isotopes_a) covers the top 104 m and is based on discrete sampling of the core at a resolution of 0.03 m. The second (mbs_water_isotopes_b) spans the depth range 93-294.7 m and contains very high resolution measurements performed with a Continuous Flow Analysis system (CFA) at a nominal resolution of 0.005 m. Both datasets employed Infra-Red Laser Spectroscopy techniques presenting state of the art metrics with respect to precision and accuracy.

There are two data files in the download:

1) mbs_water_isotopes_a.txt
2) mbs_water_isotopes_b.txt

1) Parameter(s):
Depth, ice/snow [m] (Depth ice/snow)
MBS2023 [a CE] (Date)
d18, [‰ SMOW]
dD, water [‰ SMOW] (δD H2O)
sigma_d18, water [‰ SMOW]
sigma_dD, water [‰ SMOW]

Size:    40327 data points

2) Parameter(s):
Depth_Top, ice/snow [m] (Depth ice/snow)
Depth_Mid, ice/snow [m] (Depth ice/snow)
Depth_Bottom, ice/snow [m] (Depth ice/snow)
MBS2023 [a CE] (Date)
d18, [‰ SMOW]
dD, water [‰ SMOW] (δD H2O)
d18_precision, water [‰ SMOW]
dD_precision, water [‰ SMOW]
d18_accuracy, water [‰ SMOW]
dD_accuracy, water [‰ SMOW]

Size:    3339 data points

More information on the parameters is available in the download files.

Lineage

Progress Code: completed

Data time period: 2017-12-23 to 2018-01-15

This dataset is part of a larger collection

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text: westlimit=86.312; southlimit=-69.112; eastlimit=86.313; northlimit=-69.111

text: uplimit=2084; downlimit=2083

text: uplimit=294.712; downlimit=4.125

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Download the dataset. (GET DATA > DIRECT DOWNLOAD)

url : https://data.aad.gov.au/eds/5712/download External Link

Public information for AAS project AAS_4414 (PROJECT HOME PAGE)

url : https://projects.aad.gov.au/report_project_public.cfm?project_no=AAS_4414 External Link

Citation reference for this metadata record and dataset. (VIEW RELATED INFORMATION)

url : https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4414_Mt_Brown_Water_Isotopes_2023 External Link

Identifiers

global : AAS_4414_Mt_Brown_Water_Isotopes_2023
DOI : 10.26179/YGEQ-1A95