Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica
Oxygen isotope, gross β-radioactivity and stratigraphic determinations were done on firn cores from Mizuho Plateau, Antarctica. Factors controlling oxygen isotope variations in firn were discussed. From the results of gross β-activity measurements, it is obvious that the cycle in oxygen isotope prof...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English Japanese |
Published: |
National Institute of Polar Research
1977
|
Subjects: | |
Online Access: | https://doi.org/10.15094/00007924 https://doaj.org/article/5c003b66720f409fa4acc38d376c9d04 |
id |
ftdoajarticles:oai:doaj.org/article:5c003b66720f409fa4acc38d376c9d04 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:5c003b66720f409fa4acc38d376c9d04 2023-05-15T13:35:03+02:00 Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica Kikuo KATO Okitsugu WATANABE 1977-03-01T00:00:00Z https://doi.org/10.15094/00007924 https://doaj.org/article/5c003b66720f409fa4acc38d376c9d04 EN JA eng jpn National Institute of Polar Research http://doi.org/10.15094/00007924 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007924 0085-7289 2432-079X https://doaj.org/article/5c003b66720f409fa4acc38d376c9d04 Antarctic Record, Iss 58, Pp 254-262 (1977) Geography (General) G1-922 article 1977 ftdoajarticles https://doi.org/10.15094/00007924 2022-12-31T03:25:56Z Oxygen isotope, gross β-radioactivity and stratigraphic determinations were done on firn cores from Mizuho Plateau, Antarctica. Factors controlling oxygen isotope variations in firn were discussed. From the results of gross β-activity measurements, it is obvious that the cycle in oxygen isotope profile is once a year in some areas due to the seasonal variation in oxygen isotopic composition of snowfall. In other areas, the cycle is not once a year. The following two factors are considered to affect strongly oxygen isotope variations in firn, from the results of direct stake measurements of snow accumulation and observations of surface conditions of the ice sheet. 1) changes in time of erosion, deposition and none on snow surface, 2) subsequent movement of water vapor in firn. Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Directory of Open Access Journals: DOAJ Articles Mizuho ENVELOPE(44.317,44.317,-70.683,-70.683) Mizuho Plateau ENVELOPE(40.000,40.000,-73.000,-73.000) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Kikuo KATO Okitsugu WATANABE Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica |
topic_facet |
Geography (General) G1-922 |
description |
Oxygen isotope, gross β-radioactivity and stratigraphic determinations were done on firn cores from Mizuho Plateau, Antarctica. Factors controlling oxygen isotope variations in firn were discussed. From the results of gross β-activity measurements, it is obvious that the cycle in oxygen isotope profile is once a year in some areas due to the seasonal variation in oxygen isotopic composition of snowfall. In other areas, the cycle is not once a year. The following two factors are considered to affect strongly oxygen isotope variations in firn, from the results of direct stake measurements of snow accumulation and observations of surface conditions of the ice sheet. 1) changes in time of erosion, deposition and none on snow surface, 2) subsequent movement of water vapor in firn. |
format |
Article in Journal/Newspaper |
author |
Kikuo KATO Okitsugu WATANABE |
author_facet |
Kikuo KATO Okitsugu WATANABE |
author_sort |
Kikuo KATO |
title |
Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica |
title_short |
Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica |
title_full |
Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica |
title_fullStr |
Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica |
title_full_unstemmed |
Oxygen Isotope Profiles in Firn Cores from Mizuho Plateau, Antarctica |
title_sort |
oxygen isotope profiles in firn cores from mizuho plateau, antarctica |
publisher |
National Institute of Polar Research |
publishDate |
1977 |
url |
https://doi.org/10.15094/00007924 https://doaj.org/article/5c003b66720f409fa4acc38d376c9d04 |
long_lat |
ENVELOPE(44.317,44.317,-70.683,-70.683) ENVELOPE(40.000,40.000,-73.000,-73.000) |
geographic |
Mizuho Mizuho Plateau |
geographic_facet |
Mizuho Mizuho Plateau |
genre |
Antarc* Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica Ice Sheet |
op_source |
Antarctic Record, Iss 58, Pp 254-262 (1977) |
op_relation |
http://doi.org/10.15094/00007924 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007924 0085-7289 2432-079X https://doaj.org/article/5c003b66720f409fa4acc38d376c9d04 |
op_doi |
https://doi.org/10.15094/00007924 |
_version_ |
1766060450892480512 |