FIZIKA B 3 (1994) 2, 103-118

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THE ROLE OF COAGULATION AND SEDIMENTATION MECHANISMS IN THE TWO-COMPONENT MODEL OF SEA-PARTICLE SIZE DISTRIBUTION

DUBRAVKO RISOVIĆ and MLADEN MARTINIS

Rugjer Bošković Institute, P.O.B. 1016, 41001 Zagreb, Republic of Croatia

Received 6 July 1994
Revised manuscript received 8 September 1994

Simple coagulation and sedimentation mechanisms are considered in relation to the sea particle size distribution (PSD). It is shown that the values of g-parameters in the two-component model of PSD can be associated with coagulation and sedimentation mechanisms. Moreover, it is shown that low gA-values can be associated with high turbulent kinetic energy dissipation rate characteristic of surface and coastal waters. High gA-values, characteristic of deep waters, indicate domination of differential sedimentation over shear coagulation. An insight into the size ordering of mechanisms and the extent of size sub-range in which they dominate can be inferred from generalized power exponent m(r) which is g-parameter dependent.

UDC 535.39
PACS 83.70.Hq, 89.60.+x, 78.40.-q
Copyright by The Croatian Physical Society
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