Characteristics of salt inclusions in polar ice from Dome Fuji, East Antarctica
We studied the depth profile of the chemical properties, number concentration and average diameter of micro-inclusions in Antarctic ice from Dome Fuji. Analysis of the data indicated that the distribution of inclusions was not significantly modified during ice sheet flow, although a main constituent...
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/14419 2023-05-15T13:55:39+02:00 Characteristics of salt inclusions in polar ice from Dome Fuji, East Antarctica Ohno, Hiroshi Igarashi, Makoto Hondoh, Takeo http://hdl.handle.net/2115/14419 https://doi.org/10.1029/2006GL025774 eng eng American Geophysical Union http://www.agu.org/ http://hdl.handle.net/2115/14419 GEOPHYSICAL RESEARCH LETTERS, 33(8): Art. No. L08501-Art. No. L08501 http://dx.doi.org/10.1029/2006GL025774 SOLUBLE IMPURITIES CORE 455 article (author version) fthokunivhus https://doi.org/10.1029/2006GL025774 2022-11-18T01:01:17Z We studied the depth profile of the chemical properties, number concentration and average diameter of micro-inclusions in Antarctic ice from Dome Fuji. Analysis of the data indicated that the distribution of inclusions was not significantly modified during ice sheet flow, although a main constituent Na2SO4 center dot 10H(2)O changed into another solid phase in the deep ice. In the chemical form, sodium sulfate and magnesium sulfate were dominant in the interglacial and early-glacial ice, but were not detected in the glacial-maximum ice. Instead, the sulfate in the glacial-maximum ice was mainly in the form of calcium sulfate. This is strong support for the hypothesis that the neutralization regime of acid aerosols in the atmosphere and snowpack dramatically changed from chemical reaction with sea salt to that with dust during glacial maxima. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Antarctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) East Antarctica Geophysical Research Letters 33 8 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
SOLUBLE IMPURITIES CORE 455 |
spellingShingle |
SOLUBLE IMPURITIES CORE 455 Ohno, Hiroshi Igarashi, Makoto Hondoh, Takeo Characteristics of salt inclusions in polar ice from Dome Fuji, East Antarctica |
topic_facet |
SOLUBLE IMPURITIES CORE 455 |
description |
We studied the depth profile of the chemical properties, number concentration and average diameter of micro-inclusions in Antarctic ice from Dome Fuji. Analysis of the data indicated that the distribution of inclusions was not significantly modified during ice sheet flow, although a main constituent Na2SO4 center dot 10H(2)O changed into another solid phase in the deep ice. In the chemical form, sodium sulfate and magnesium sulfate were dominant in the interglacial and early-glacial ice, but were not detected in the glacial-maximum ice. Instead, the sulfate in the glacial-maximum ice was mainly in the form of calcium sulfate. This is strong support for the hypothesis that the neutralization regime of acid aerosols in the atmosphere and snowpack dramatically changed from chemical reaction with sea salt to that with dust during glacial maxima. |
format |
Article in Journal/Newspaper |
author |
Ohno, Hiroshi Igarashi, Makoto Hondoh, Takeo |
author_facet |
Ohno, Hiroshi Igarashi, Makoto Hondoh, Takeo |
author_sort |
Ohno, Hiroshi |
title |
Characteristics of salt inclusions in polar ice from Dome Fuji, East Antarctica |
title_short |
Characteristics of salt inclusions in polar ice from Dome Fuji, East Antarctica |
title_full |
Characteristics of salt inclusions in polar ice from Dome Fuji, East Antarctica |
title_fullStr |
Characteristics of salt inclusions in polar ice from Dome Fuji, East Antarctica |
title_full_unstemmed |
Characteristics of salt inclusions in polar ice from Dome Fuji, East Antarctica |
title_sort |
characteristics of salt inclusions in polar ice from dome fuji, east antarctica |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/2115/14419 https://doi.org/10.1029/2006GL025774 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic Dome Fuji East Antarctica |
geographic_facet |
Antarctic Dome Fuji East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet |
op_relation |
http://www.agu.org/ http://hdl.handle.net/2115/14419 GEOPHYSICAL RESEARCH LETTERS, 33(8): Art. No. L08501-Art. No. L08501 http://dx.doi.org/10.1029/2006GL025774 |
op_doi |
https://doi.org/10.1029/2006GL025774 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
8 |
_version_ |
1766262435484794880 |