淡水河輸至台灣海峽之氨氮通量研究(2/3)
Date Issued
2004
Date
2004
Author(s)
DOI
922611M002022
Abstract
Both spatial and temporal peaks that are produced by the discrete parcel model can be mathematically approximated by Gaussian functions,
but the transformation from a spatial pattern to a temporal image requires a convolution treatment. A first-order convolution is given for
temporal peaks under a linear isotherm, whereas a second-order convolution is proposed for those under non-linear isotherms. Numerical tests
show that the peak shapes generated by the proposed temporally convoluted Gaussian equations (TCG) match perfectly with those obtained
by the discrete parcel model. Although the full TCG equation may be quite complicated, it can be made easier by a recursion calculation
technique, and a group of peak curves can be plotted simultaneously on computer worksheet. The results also suggest that the temporal
distortion effect should be predominately considered, in addition to those known-to-exist spatial effects, for explaining the peak asymmetry.
© 2004 Elsevier B.V. All rights reserved.
Subjects
Temporal convolution
Gaussian equations
Peak shape
Parcel model
Publisher
臺北市：國立臺灣大學海洋研究所
Type
report
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