Age stratigraphy in the East Antarctic Ice Sheet inferred from radio-echo sounding horizons
The East Antarctic Ice Sheet contains a wealth of information that can be extracted from its internal architecture such as distribution of age, past flow features, and surface and basal properties. Airborne radar surveys can sample this stratigraphic archive across broad areas. Here, we identify and...
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Copernicus Publications
2019
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fttriple:oai:gotriple.eu:oai:doaj.org/article:6f5f7b63ad0b459384170471b2638cf7 2023-05-15T13:46:30+02:00 Age stratigraphy in the East Antarctic Ice Sheet inferred from radio-echo sounding horizons A. Winter D. Steinhage T. T. Creyts T. Kleiner O. Eisen 2019-07-01 https://doi.org/10.5194/essd-11-1069-2019 https://www.earth-syst-sci-data.net/11/1069/2019/essd-11-1069-2019.pdf https://doaj.org/article/6f5f7b63ad0b459384170471b2638cf7 en eng Copernicus Publications doi:10.5194/essd-11-1069-2019 1866-3508 1866-3516 https://www.earth-syst-sci-data.net/11/1069/2019/essd-11-1069-2019.pdf https://doaj.org/article/6f5f7b63ad0b459384170471b2638cf7 undefined Earth System Science Data, Vol 11, Pp 1069-1081 (2019) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.5194/essd-11-1069-2019 2023-01-22T17:51:12Z The East Antarctic Ice Sheet contains a wealth of information that can be extracted from its internal architecture such as distribution of age, past flow features, and surface and basal properties. Airborne radar surveys can sample this stratigraphic archive across broad areas. Here, we identify and trace key horizons across several radar surveys to obtain the stratigraphic information. We transfer the age–depth scales from ice cores to intersecting radar data. We then propagate these age scales across the ice sheet using the high fidelity continuity of the radar horizons. In Dronning Maud Land, including Dome Fuji, we mapped isochrones with ages of 38 and 74 ka. In the central region of East Antarctica around Dome Concordia, Vostok and Dome Argus, we use isochrone ages of 38, 48, 90 and 161 ka. Taking together both regions, we provide isochrone depths traced along a combined profile length of more than 40 000 km and discuss uncertainties of the obtained stratigraphy, as well as factors important to consider for further expansion. This data set is the most extensive distribution of internal horizons in East Antarctica to date. The isochrone depths presented in this study are available on PANGAEA (https://doi.org/10.1594/PANGAEA.895528; Winter et al., 2018). Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet Unknown Antarctic Dome Argus ENVELOPE(77.000,77.000,-81.000,-81.000) Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Dronning Maud Land East Antarctic Ice Sheet East Antarctica Earth System Science Data 11 3 1069 1081 |
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language |
English |
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geo envir |
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geo envir A. Winter D. Steinhage T. T. Creyts T. Kleiner O. Eisen Age stratigraphy in the East Antarctic Ice Sheet inferred from radio-echo sounding horizons |
topic_facet |
geo envir |
description |
The East Antarctic Ice Sheet contains a wealth of information that can be extracted from its internal architecture such as distribution of age, past flow features, and surface and basal properties. Airborne radar surveys can sample this stratigraphic archive across broad areas. Here, we identify and trace key horizons across several radar surveys to obtain the stratigraphic information. We transfer the age–depth scales from ice cores to intersecting radar data. We then propagate these age scales across the ice sheet using the high fidelity continuity of the radar horizons. In Dronning Maud Land, including Dome Fuji, we mapped isochrones with ages of 38 and 74 ka. In the central region of East Antarctica around Dome Concordia, Vostok and Dome Argus, we use isochrone ages of 38, 48, 90 and 161 ka. Taking together both regions, we provide isochrone depths traced along a combined profile length of more than 40 000 km and discuss uncertainties of the obtained stratigraphy, as well as factors important to consider for further expansion. This data set is the most extensive distribution of internal horizons in East Antarctica to date. The isochrone depths presented in this study are available on PANGAEA (https://doi.org/10.1594/PANGAEA.895528; Winter et al., 2018). |
format |
Article in Journal/Newspaper |
author |
A. Winter D. Steinhage T. T. Creyts T. Kleiner O. Eisen |
author_facet |
A. Winter D. Steinhage T. T. Creyts T. Kleiner O. Eisen |
author_sort |
A. Winter |
title |
Age stratigraphy in the East Antarctic Ice Sheet inferred from radio-echo sounding horizons |
title_short |
Age stratigraphy in the East Antarctic Ice Sheet inferred from radio-echo sounding horizons |
title_full |
Age stratigraphy in the East Antarctic Ice Sheet inferred from radio-echo sounding horizons |
title_fullStr |
Age stratigraphy in the East Antarctic Ice Sheet inferred from radio-echo sounding horizons |
title_full_unstemmed |
Age stratigraphy in the East Antarctic Ice Sheet inferred from radio-echo sounding horizons |
title_sort |
age stratigraphy in the east antarctic ice sheet inferred from radio-echo sounding horizons |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/essd-11-1069-2019 https://www.earth-syst-sci-data.net/11/1069/2019/essd-11-1069-2019.pdf https://doaj.org/article/6f5f7b63ad0b459384170471b2638cf7 |
long_lat |
ENVELOPE(77.000,77.000,-81.000,-81.000) ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic Dome Argus Dome Fuji Dronning Maud Land East Antarctic Ice Sheet East Antarctica |
geographic_facet |
Antarctic Dome Argus Dome Fuji Dronning Maud Land East Antarctic Ice Sheet East Antarctica |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet |
op_source |
Earth System Science Data, Vol 11, Pp 1069-1081 (2019) |
op_relation |
doi:10.5194/essd-11-1069-2019 1866-3508 1866-3516 https://www.earth-syst-sci-data.net/11/1069/2019/essd-11-1069-2019.pdf https://doaj.org/article/6f5f7b63ad0b459384170471b2638cf7 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/essd-11-1069-2019 |
container_title |
Earth System Science Data |
container_volume |
11 |
container_issue |
3 |
container_start_page |
1069 |
op_container_end_page |
1081 |
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1766243384268161024 |