Abstract
In this study, numerical simulation and field observation of wind-driven flow pattern in lake Yanaka are carried out. The field observation is made by taking photos from airplane to trace the movements of drifters. It is shown that the simulated flow pattern is in fair agreement with the observation. Subsequently, a compartment model of eutrophication for lake Yanaka is devised to simulate phytoplankton growth. By comparison with field data of 1996, it is shown that the spring bloom in 1996 is well reproduced by the model.
