Fractal fluctuation of aerosol concentration near Chernobyl

被引：13

作者：

Hatano, Y ^{[1
]}

Hatano, N ^{[1
]}

机构：

[1] HARVARD UNIV,DEPT PHYS,CAMBRIDGE,MA 02138

来源：

ATMOSPHERIC ENVIRONMENT | 1997年 / 31卷 / 15期

关键词：

aerosol; Chernobyl; fluctuation; fractal; correlation; theoretical model; diffusion;

D O I：

10.1016/S1352-2310(97)00017-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We present a simple model of aerosol migration with fractal, or self-similar fluctuation of wind speed. The purpose of the study is to explain fractal fluctuation of airborne radionuclide concentration which was measured daily near Chernobyl by Garger et al. Our theoretical prediction on the concentration fluctuation agrees with the measured data remarkably. We also predict that the mean concentration decreases in time as t(-4/3) e (- lambda t), where lambda denotes the sum of constants of the first-order kinetics, such as the radioactive decay rate and the chemical reaction rate. It is suggested that the characteristics of fluctuation appearing in our model are universal for large-scale atmospheric pollution. (C) 1997 Elsevier Science Ltd.

引用

页码：2297 / 2303

页数：7

共 21 条

[1] EVIDENCE OF STRATOSPHERIC FALLOUT OF CESIUM ISOTOPES FROM THE CHERNOBYL ACCIDENT [J].