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shear instability
even sessile gastropods (Vermetus) . These organisms generally start life
as planktonic larvae and undergo a metamorphosis before they become sessile.
seston (I) (syn. suspended matter) comprises all particles (live and dead) that are
present in the water phase and have only a restricted mobility relative to the
water mass in which they occur; (2) all sessile organisms; opposite of vagon.
seta (pI. setae) bristle or "hair" of Invertebrata, produced by epidermis.
set-up the rise of water above its "normal" elevation due to wind or waves. In
tidal regions the set-up is determined with respect to the predicted tide.
Prediction of the set-up is important in case of storm surges. For shipping in
shallow regions it may be important to predict the negative set-up, the setdown.
shading as long as there are enough nutrients in the water, algae will, under sufficient light input, show population growth. With the increasing algal density, however, the turbidity of the water also increases, limiting light penetration, and with that, growth rate of the algae. Lower in the water column,
algae live in the shade of those close to the surface; this shading or self-shading affects productivity negatively.
shallow water tides it appears from harmonic analysis of tides that in shallow seas
often not only astronomical tides occur, but also higher harmonics of the
stronger constituents (for instance quarter-diurnal) or periods that are the
sum of, or difference between, these strong constituents. These so-called
shallow water constituents are the result of the nonlinear dynamic response
of a shallow sea to the external excitation by oceanic tides.
shallow water wave ~Iong wave.
Shannon and Weaver index ~diversity.
shear variation of current with depth. ~friction.
shear dispersion in a current with a strong current shear over the different layers,
a dissolved substance may be spread over a large area because of the combination of differential horizontal transport in the different layers and the
turbulent vertical exchange between these layers. This process has the same
effect as strong horizontal eddy diffusion, although shear dispersion often
gives a more anisotropic transport.
shear instability a flow with horizontal or vertical shear may be unstable. This
means that a small perturbation in the flow may grow in size, resulting in
shear instability
even sessile gastropods (Vermetus) . These organisms generally start life
as planktonic larvae and undergo a metamorphosis before they become sessile.
seston (I) (syn. suspended matter) comprises all particles (live and dead) that are
present in the water phase and have only a restricted mobility relative to the
water mass in which they occur; (2) all sessile organisms; opposite of vagon.
seta (pI. setae) bristle or "hair" of Invertebrata, produced by epidermis.
set-up the rise of water above its "normal" elevation due to wind or waves. In
tidal regions the set-up is determined with respect to the predicted tide.
Prediction of the set-up is important in case of storm surges. For shipping in
shallow regions it may be important to predict the negative set-up, the setdown.
shading as long as there are enough nutrients in the water, algae will, under sufficient light input, show population growth. With the increasing algal density, however, the turbidity of the water also increases, limiting light penetration, and with that, growth rate of the algae. Lower in the water column,
algae live in the shade of those close to the surface; this shading or self-shading affects productivity negatively.
shallow water tides it appears from harmonic analysis of tides that in shallow seas
often not only astronomical tides occur, but also higher harmonics of the
stronger constituents (for instance quarter-diurnal) or periods that are the
sum of, or difference between, these strong constituents. These so-called
shallow water constituents are the result of the nonlinear dynamic response
of a shallow sea to the external excitation by oceanic tides.
shallow water wave ~Iong wave.
Shannon and Weaver index ~diversity.
shear variation of current with depth. ~friction.
shear dispersion in a current with a strong current shear over the different layers,
a dissolved substance may be spread over a large area because of the combination of differential horizontal transport in the different layers and the
turbulent vertical exchange between these layers. This process has the same
effect as strong horizontal eddy diffusion, although shear dispersion often
gives a more anisotropic transport.
shear instability a flow with horizontal or vertical shear may be unstable. This
means that a small perturbation in the flow may grow in size, resulting in