Abstract
The experiment was carried out to evaluate diminution of terrestrial gamma rays due to snow cover, in Nagaoka city, Niigata prefecture, in 1987, using a helicopter and a monitoring car. The measurement were performed in autumn before snowfall and in winter. From the measurements over wide areas in and around Nagaoka city, penetration ratios (ratios of terrestrial gamma ray doses on snow covered ground to those on snow free ground) were found to be small in the center of the city but high in the suburbs. Water equivalents were calculated by penetration ratios derived from measured data by airborne survey and carbon survey. The calculated snow equivalents were compared with a published snow depth. The former was 20-30% smaller than the latter with a wide of courses in and around Nagaoka city. (author).
Sakamoto, Ryuichi;
Nagaoka, Toshi;
Saito, Kimiaki;
Tsutsumi, Masahiro;
Moriuchi, Shigeru
[1]
- Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
Citation Formats
Sakamoto, Ryuichi, Nagaoka, Toshi, Saito, Kimiaki, Tsutsumi, Masahiro, and Moriuchi, Shigeru.
A carbon survey for the evaluation of diminution of terrestrial gamma ray due to snow cover.
Japan: N. p.,
1991.
Web.
Sakamoto, Ryuichi, Nagaoka, Toshi, Saito, Kimiaki, Tsutsumi, Masahiro, & Moriuchi, Shigeru.
A carbon survey for the evaluation of diminution of terrestrial gamma ray due to snow cover.
Japan.
Sakamoto, Ryuichi, Nagaoka, Toshi, Saito, Kimiaki, Tsutsumi, Masahiro, and Moriuchi, Shigeru.
1991.
"A carbon survey for the evaluation of diminution of terrestrial gamma ray due to snow cover."
Japan.
@misc{etde_10126376,
title = {A carbon survey for the evaluation of diminution of terrestrial gamma ray due to snow cover}
author = {Sakamoto, Ryuichi, Nagaoka, Toshi, Saito, Kimiaki, Tsutsumi, Masahiro, and Moriuchi, Shigeru}
abstractNote = {The experiment was carried out to evaluate diminution of terrestrial gamma rays due to snow cover, in Nagaoka city, Niigata prefecture, in 1987, using a helicopter and a monitoring car. The measurement were performed in autumn before snowfall and in winter. From the measurements over wide areas in and around Nagaoka city, penetration ratios (ratios of terrestrial gamma ray doses on snow covered ground to those on snow free ground) were found to be small in the center of the city but high in the suburbs. Water equivalents were calculated by penetration ratios derived from measured data by airborne survey and carbon survey. The calculated snow equivalents were compared with a published snow depth. The former was 20-30% smaller than the latter with a wide of courses in and around Nagaoka city. (author).}
place = {Japan}
year = {1991}
month = {Oct}
}
title = {A carbon survey for the evaluation of diminution of terrestrial gamma ray due to snow cover}
author = {Sakamoto, Ryuichi, Nagaoka, Toshi, Saito, Kimiaki, Tsutsumi, Masahiro, and Moriuchi, Shigeru}
abstractNote = {The experiment was carried out to evaluate diminution of terrestrial gamma rays due to snow cover, in Nagaoka city, Niigata prefecture, in 1987, using a helicopter and a monitoring car. The measurement were performed in autumn before snowfall and in winter. From the measurements over wide areas in and around Nagaoka city, penetration ratios (ratios of terrestrial gamma ray doses on snow covered ground to those on snow free ground) were found to be small in the center of the city but high in the suburbs. Water equivalents were calculated by penetration ratios derived from measured data by airborne survey and carbon survey. The calculated snow equivalents were compared with a published snow depth. The former was 20-30% smaller than the latter with a wide of courses in and around Nagaoka city. (author).}
place = {Japan}
year = {1991}
month = {Oct}
}