STUDY ON THE INTERNAL WAVES CAUSED BY LAND AND SEA BREEZE IN LAKE KOYAMA

Abstract

The field observation conducted in the summer of 2000 at Lake Koyama showed that there were some types of internal waves. In this study we simulated those data using ELCOM which is a three-dimensional hydrodynamics model developed by CWR, the University of Western Australia. The results of simulations showed that there were three types of internal waves. The first one is an internal seiche generated after the stop of a sea breeze, the second one is an internal seiche after the stop of a land breeze and the final one is an internal Kelvin wave after the stop of a sea breeze. It is also cleared that in the water body of the lake these waves interacts each other and this causes the complicated distribution of water temperature and flow structures under the condition of land and sea breeze.