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| Titel |
A differentiation method for separating a mixture of suspended particle size distributions |
| VerfasserIn |
H. Q. Wang, J. P. Dupont, R. Lafite, R. Meyer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 3, no. 2 ; Nr. 3, no. 2, S.177-185 |
| Datensatznummer |
250000906
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| Publikation (Nr.) |
 copernicus.org/hess-3-177-1999.pdf |
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| Zusammenfassung |
| A simple method is proposed to partition a mixture of two populations in
suspended particle size data. The method, termed here "the differentiation
method" is based on the function of the lognormal distribution. Suspended
material in marine or estuarine situations often consists of
difficult-to-interpret complex populations. The treatment of particle size data
by the method described enables the confirmation of the lognormal law and also
the demonstration of the occurrence of a combination of a number of populations
which may not be distinguished by the classical Gaussian transformation or
automatic methods. A simple combination of graphical and numerical techniques
permits the decomposition and the easy determination of the various statistical
parameters (median diameter, mean diameter, etc...). The method is applied to
interpret observed size distributions of suspended particulate matter in the
Seine estuary. The method enables the determination of the relative sizes of the
constituent sub-populations that comprise the total suspended matter. In the
example used to illustrate the method, particles are shown to be resuspended as
a function of different hydrodynamic parameter. |
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