Natural and artificial radionuclides in environmental samples collected from the McMurdo Sound region in South Victoria Land, Antarctica
Natural and artificial radionuclides in the soils collected from Ross Island and the Dry Valleys area and water filters used at the Scott Base have been studied by non-destructive γ- and α-spectrometry. The U, Th and K contents in the soils from Cape Royds were found to be several times higher than...
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Low Level Radioactivity Laboratory, Kanazawa University
1984
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ftnipr:oai:nipr.repo.nii.ac.jp:00001658 2023-05-15T13:47:59+02:00 Natural and artificial radionuclides in environmental samples collected from the McMurdo Sound region in South Victoria Land, Antarctica Kazuhisa Komura Tetsuya Torii Masayoshi Yamamoto Masanobu Sakanoue 1984-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1658 http://id.nii.ac.jp/1291/00001658/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1658&item_no=1&attribute_id=18&file_no=1 en eng Low Level Radioactivity Laboratory, Kanazawa University Chiba Institute of Technology Faculty of Pharmacy, Hokuriku University https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1658 http://id.nii.ac.jp/1291/00001658/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 33, 224-236(1984-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1658&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1984 ftnipr 2022-11-12T19:42:29Z Natural and artificial radionuclides in the soils collected from Ross Island and the Dry Valleys area and water filters used at the Scott Base have been studied by non-destructive γ- and α-spectrometry. The U, Th and K contents in the soils from Cape Royds were found to be several times higher than those from the Dry Valleys area, while the K/Th and U/Th ratios were nearly the same independent of the sampling location. Accumulation of ^<137>(Cs) in surface soils was estimated to be 1-5mCi/(km)^2,which is one to two orders of magnitude lower than those measured for the surface soils in Japan. In spite of the great difference of the fallout accumulation in surface soil, the ^<239,240>(Pu)/^<137>(Cs) activity ratio (0.016-0.022) was almost the same as the global fallout value. On the other hand, various artificial radionuclides were detected in the water filter samples. Among them, exsistence of ^<207>(Bi) is remarkable in the Antarctic samples. No appreciable difference from the global fallout value was found for the ^<239,240>(Pu)/^<137>(Cs) and ^<241>(Am)/^<239,240>(Pu) activity ratios. However, the ^<238>(Pu)/^<239,240>(Pu) ratio was found to be 3 to 5 times higher than those measured in the northern hemisphere, which can be attributed to the accidental release of ^<238>(Pu) by the burn-up of SNAP-9A satellite in 1964. Report Antarc* Antarctic Antarctica McMurdo Sound Memoirs of National Institute of Polar Research Polar Research Ross Island Victoria Land National Institute of Polar Research Repository, Japan Antarctic The Antarctic Victoria Land McMurdo Sound Ross Island Scott Base ENVELOPE(166.766,166.766,-77.849,-77.849) Royds ENVELOPE(166.150,166.150,-77.550,-77.550) Cape Royds ENVELOPE(166.150,166.150,-77.550,-77.550) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
Natural and artificial radionuclides in the soils collected from Ross Island and the Dry Valleys area and water filters used at the Scott Base have been studied by non-destructive γ- and α-spectrometry. The U, Th and K contents in the soils from Cape Royds were found to be several times higher than those from the Dry Valleys area, while the K/Th and U/Th ratios were nearly the same independent of the sampling location. Accumulation of ^<137>(Cs) in surface soils was estimated to be 1-5mCi/(km)^2,which is one to two orders of magnitude lower than those measured for the surface soils in Japan. In spite of the great difference of the fallout accumulation in surface soil, the ^<239,240>(Pu)/^<137>(Cs) activity ratio (0.016-0.022) was almost the same as the global fallout value. On the other hand, various artificial radionuclides were detected in the water filter samples. Among them, exsistence of ^<207>(Bi) is remarkable in the Antarctic samples. No appreciable difference from the global fallout value was found for the ^<239,240>(Pu)/^<137>(Cs) and ^<241>(Am)/^<239,240>(Pu) activity ratios. However, the ^<238>(Pu)/^<239,240>(Pu) ratio was found to be 3 to 5 times higher than those measured in the northern hemisphere, which can be attributed to the accidental release of ^<238>(Pu) by the burn-up of SNAP-9A satellite in 1964. |
format |
Report |
author |
Kazuhisa Komura Tetsuya Torii Masayoshi Yamamoto Masanobu Sakanoue |
spellingShingle |
Kazuhisa Komura Tetsuya Torii Masayoshi Yamamoto Masanobu Sakanoue Natural and artificial radionuclides in environmental samples collected from the McMurdo Sound region in South Victoria Land, Antarctica |
author_facet |
Kazuhisa Komura Tetsuya Torii Masayoshi Yamamoto Masanobu Sakanoue |
author_sort |
Kazuhisa Komura |
title |
Natural and artificial radionuclides in environmental samples collected from the McMurdo Sound region in South Victoria Land, Antarctica |
title_short |
Natural and artificial radionuclides in environmental samples collected from the McMurdo Sound region in South Victoria Land, Antarctica |
title_full |
Natural and artificial radionuclides in environmental samples collected from the McMurdo Sound region in South Victoria Land, Antarctica |
title_fullStr |
Natural and artificial radionuclides in environmental samples collected from the McMurdo Sound region in South Victoria Land, Antarctica |
title_full_unstemmed |
Natural and artificial radionuclides in environmental samples collected from the McMurdo Sound region in South Victoria Land, Antarctica |
title_sort |
natural and artificial radionuclides in environmental samples collected from the mcmurdo sound region in south victoria land, antarctica |
publisher |
Low Level Radioactivity Laboratory, Kanazawa University |
publishDate |
1984 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1658 http://id.nii.ac.jp/1291/00001658/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1658&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(166.766,166.766,-77.849,-77.849) ENVELOPE(166.150,166.150,-77.550,-77.550) ENVELOPE(166.150,166.150,-77.550,-77.550) |
geographic |
Antarctic The Antarctic Victoria Land McMurdo Sound Ross Island Scott Base Royds Cape Royds |
geographic_facet |
Antarctic The Antarctic Victoria Land McMurdo Sound Ross Island Scott Base Royds Cape Royds |
genre |
Antarc* Antarctic Antarctica McMurdo Sound Memoirs of National Institute of Polar Research Polar Research Ross Island Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Sound Memoirs of National Institute of Polar Research Polar Research Ross Island Victoria Land |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1658 http://id.nii.ac.jp/1291/00001658/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 33, 224-236(1984-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1658&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248298666000384 |