A combination of field measurements and computer modelling was selected as
a main approach, when the Hydrological Subcomponent of the Lake Tanganyika
Research (LTR) Program was established. The main goal of the modelling work
is to estimate the role of main factors affecting water currents in Lake T
anganyika and to understand the peculiarities of spatial and temporal varia
tions of its hydrophysical characteristics. Special attention is given to a
more accurate description of wind-induced shear stresses, the main driving
force of the lake dynamics. Numerical experiments with a mesoscale meteoro
logical model show the significant role of a coastal diurnal slope-lake bre
eze system, intensified during the dry season while south-easterly trade wi
nds supply the main amount of energy to the middle of the lake.