129I in the Southern Hemisphere:: Global redistribution of an anthropogenic isotope

被引：47

作者：

Fehn, U ^{[1
]}

Snyder, G ^{[1
]}

机构：

[1] Univ Rochester, Dept Earth & Environm Sci, Rochester, NY 14627 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2000年 / 172卷

基金：

美国国家科学基金会;

关键词：

iodine; I-129; anthropogenic; Southern Hemisphere;

D O I：

10.1016/S0168-583X(00)00085-9

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Determination of I-129 concentrations and I-129/I ratios in surface waters collected in the Southern Hemisphere indicate the presence of anthropogenic I-129 on a global scale. Although levels in the Southern Hemisphere are significantly below those in the Northern Hemisphere, they are still two orders of magnitude above natural levels. The most likely sources for anthropogenic I-129 are releases from reprocessing plants located in the Northern Hemisphere. The results indicate a rapid redistribution of this radioisotope through atmospheric transport on a global scale. Mid-latitudes in both hemispheres have higher values than equatorial and polar regions, probably reflecting atmospheric transport and precipitation patterns. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：366 / 371

页数：6

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