RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
大地ガンマ線線量率空間変動の一次元スペクトル解析
湊 進
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ジャーナル フリー

1992 年 41 巻 2 号 p. 79-82

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Space series analysis was made for 12 sets of equal interval data of terrestrial gammaray dose rate collected in the Japanese Islands, North America and Iceland. Each power spectral density (PSD) could be approximated in the form of P (k) =a·k-n, where P and k were the PSD and wave number, respectively, and a and n were a constant. The value of n ranged from around 1 to 1.7 and the average amounted to 1.3 for a wave-number region of 10-4 -103 cycles/km. The PSDs were divided into two groups having an average of a of 0.1 for Iceland data and that of 5.6 (nGy/h) 2⋅km for others.

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© 社団法人 日本アイソトープ協会
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