B. Shteinman et al., SEICHE-INDUCED RESUSPENSION IN LAKE-KINNERET - A FLUORESCENT TRACER EXPERIMENT, Water, air and soil pollution, 99(1-4), 1997, pp. 123-131
In warm-monomictic Lake Kinneret, wind-induced internal waves with amp
litudes of up to 10 meters are common during April - October. This stu
dy was aimed to follow the horizontal and vertical transport of resusp
ended particles due to internal wave activity using fluorescently-dyed
sediment particles (lake sediments and lyophilized algal cells) as tr
acers. Color-coded (5 colors) tracers were deployed along a transect p
erpendicular to the shore, and their dispersion was followed by recove
ry of labeled particles in sediment traps and in bottom sediment sampl
es using epifluorescence microscopy. Wind-induced internal seiches as
the driving force for resuspension were followed using a thermistor ch
ain and a current velocity profiler. Examination of sediment trap and
bottom sediment samples indicated particle transport from the hypolimn
ion to the epilimnion that could be linked to the seiche activity. Hor
izontal transport of particles was most distinct for littoral sediment
s whereby particles placed at 5 m depth were exposed to a strong long
shore transport.