Conductivity and oxygen isotope measured on ice core FRI09C90_13 (B13) from the Filchner-Ronne ice shelf, Antarctica ...
The Filchner-Ronne ice shelf, which drains most of the marine-based portions of the West Antarctic ice sheet, is the largest ice shelf on Earth by volume. The origin and properties of the ice that constitutes this shelf are poorly understood, because a strong reflecting interface within the ice and...
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ftdatacite:10.1594/pangaea.548746 2024-09-15T17:45:42+00:00 Conductivity and oxygen isotope measured on ice core FRI09C90_13 (B13) from the Filchner-Ronne ice shelf, Antarctica ... Oerter, Hans Kipfstuhl, Sepp Determann, Jürgen Miller, Heinz Wagenbach, Dietmar Minikin, Andreas Graf, Wolfgang 1992 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.548746 https://doi.pangaea.de/10.1594/PANGAEA.548746 en eng PANGAEA https://dx.doi.org/10.1038/358399a0 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 DEPTH, ice/snow Depth, top/min Depth, bottom/max Conductivity, electrolytic δ18O, water Ice drill Electrical conductivity method, ECM Hammer, 1980 Mass spectrometer Finnigan Delta-S FRISP 1992 Sampling/drilling ice Glaciology @ AWI AWI_Glac dataset Supplementary Dataset Dataset 1992 ftdatacite https://doi.org/10.1594/pangaea.54874610.1038/358399a0 2024-08-01T10:59:23Z The Filchner-Ronne ice shelf, which drains most of the marine-based portions of the West Antarctic ice sheet, is the largest ice shelf on Earth by volume. The origin and properties of the ice that constitutes this shelf are poorly understood, because a strong reflecting interface within the ice and the diffuse nature of the ice?ocean interface make seismic and radio echo sounding data difficult to interpret. Ice in the upper part of the shelf is of meteoric origin, but it has been proposed that a basal layer of saline ice accumulates from below. Here we present the results of an analysis of the physical and chemical characteristics of an ice core drilled almost to the bottom of the Ronne ice shelf. We observe a change in ice properties at about 150 m depth, which we ascribe to a change from meteoric ice to basal marine ice. The basal ice is very different from sea ice formed at the ocean surface and we propose a formation mechanism in which ice platelets in the water column accrete to the bottom of the ice ... : Temperature of ice at 10 m depth: -23.5 deg C ... Dataset Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf ice core Ice Sheet Ice Shelf Ronne Ice Shelf Sea ice DataCite |
institution |
Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
DEPTH, ice/snow Depth, top/min Depth, bottom/max Conductivity, electrolytic δ18O, water Ice drill Electrical conductivity method, ECM Hammer, 1980 Mass spectrometer Finnigan Delta-S FRISP 1992 Sampling/drilling ice Glaciology @ AWI AWI_Glac |
spellingShingle |
DEPTH, ice/snow Depth, top/min Depth, bottom/max Conductivity, electrolytic δ18O, water Ice drill Electrical conductivity method, ECM Hammer, 1980 Mass spectrometer Finnigan Delta-S FRISP 1992 Sampling/drilling ice Glaciology @ AWI AWI_Glac Oerter, Hans Kipfstuhl, Sepp Determann, Jürgen Miller, Heinz Wagenbach, Dietmar Minikin, Andreas Graf, Wolfgang Conductivity and oxygen isotope measured on ice core FRI09C90_13 (B13) from the Filchner-Ronne ice shelf, Antarctica ... |
topic_facet |
DEPTH, ice/snow Depth, top/min Depth, bottom/max Conductivity, electrolytic δ18O, water Ice drill Electrical conductivity method, ECM Hammer, 1980 Mass spectrometer Finnigan Delta-S FRISP 1992 Sampling/drilling ice Glaciology @ AWI AWI_Glac |
description |
The Filchner-Ronne ice shelf, which drains most of the marine-based portions of the West Antarctic ice sheet, is the largest ice shelf on Earth by volume. The origin and properties of the ice that constitutes this shelf are poorly understood, because a strong reflecting interface within the ice and the diffuse nature of the ice?ocean interface make seismic and radio echo sounding data difficult to interpret. Ice in the upper part of the shelf is of meteoric origin, but it has been proposed that a basal layer of saline ice accumulates from below. Here we present the results of an analysis of the physical and chemical characteristics of an ice core drilled almost to the bottom of the Ronne ice shelf. We observe a change in ice properties at about 150 m depth, which we ascribe to a change from meteoric ice to basal marine ice. The basal ice is very different from sea ice formed at the ocean surface and we propose a formation mechanism in which ice platelets in the water column accrete to the bottom of the ice ... : Temperature of ice at 10 m depth: -23.5 deg C ... |
format |
Dataset |
author |
Oerter, Hans Kipfstuhl, Sepp Determann, Jürgen Miller, Heinz Wagenbach, Dietmar Minikin, Andreas Graf, Wolfgang |
author_facet |
Oerter, Hans Kipfstuhl, Sepp Determann, Jürgen Miller, Heinz Wagenbach, Dietmar Minikin, Andreas Graf, Wolfgang |
author_sort |
Oerter, Hans |
title |
Conductivity and oxygen isotope measured on ice core FRI09C90_13 (B13) from the Filchner-Ronne ice shelf, Antarctica ... |
title_short |
Conductivity and oxygen isotope measured on ice core FRI09C90_13 (B13) from the Filchner-Ronne ice shelf, Antarctica ... |
title_full |
Conductivity and oxygen isotope measured on ice core FRI09C90_13 (B13) from the Filchner-Ronne ice shelf, Antarctica ... |
title_fullStr |
Conductivity and oxygen isotope measured on ice core FRI09C90_13 (B13) from the Filchner-Ronne ice shelf, Antarctica ... |
title_full_unstemmed |
Conductivity and oxygen isotope measured on ice core FRI09C90_13 (B13) from the Filchner-Ronne ice shelf, Antarctica ... |
title_sort |
conductivity and oxygen isotope measured on ice core fri09c90_13 (b13) from the filchner-ronne ice shelf, antarctica ... |
publisher |
PANGAEA |
publishDate |
1992 |
url |
https://dx.doi.org/10.1594/pangaea.548746 https://doi.pangaea.de/10.1594/PANGAEA.548746 |
genre |
Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf ice core Ice Sheet Ice Shelf Ronne Ice Shelf Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf ice core Ice Sheet Ice Shelf Ronne Ice Shelf Sea ice |
op_relation |
https://dx.doi.org/10.1038/358399a0 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.54874610.1038/358399a0 |
_version_ |
1810493597056761856 |