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STUDY OF THE RESPONSE OF PASTURE VEGETATION TO THE PRESENCE OF Cs‐137 IN THE AIR AFTER THE CHERNOBYL ACCIDENT BY USING DECONVOLUTION TECHNIQUES
Author(s) -
GARCÍAOLIVARES ANTONIO,
GUARDANS RAMON
Publication year - 1997
Publication title -
environmetrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.68
H-Index - 58
eISSN - 1099-095X
pISSN - 1180-4009
DOI - 10.1002/(sici)1099-095x(199701)8:1<1::aid-env230>3.0.co;2-b
Subject(s) - deconvolution , impulse response , environmental science , vegetation (pathology) , fourier transform , statistics , mathematics , soil science , meteorology , physics , mathematical analysis , medicine , pathology
The Fourier Transform and digital deconvolution techniques have been used to describe the temporal response of a biospheric system to an instantaneous perturbation such as the passage of a contaminated cloud. The method is applied to different sites using the time series of the concentrations of Cesium‐137 in air and vegetation over a period of several weeks. The data used belong to the dataset that was compiled for the BIOMOVS‐A4 international exercise. The impulse response of a theoretical ‘resistance’ model such as the PRYMA model has been obtained using Fourier transform techniques, to obtain a family of functions dependent on a set of theoretical parameters. The experimentally obtained impulse response is then compared with that expected from a mechanistic ‘resistance’ model to study to what extent the results are consistent with the theoretical mechanistic model. © 1997 by John Wiley & Sons, Ltd.