Real Time Monitoring in an Enclosed Sea for the Development of Prediction of Red Tide

Abstract

These days, the red tide plankton of Heterocapsa circularisquama has done mortal damage to the oyster culture which is one of the famous marine product industry in Hiroshima. In order to cope with the damage of red tide plankton, the present study proposes to develop the real time monitoring system which enable to observe the movement of sea water condition. Eta-shima Bay is selected for the observation because of the location of oyster culture farm and geographical conditions. Two observe positions are selected from which the measured data is sent to the station on the ground. Depending on the condition, a ship is prepared for the measurement of nutrients and cell density of planktons. The monitoring was carried out in summertime of 1999 and 2000. The characteristic phenomena in Eta-shima Bay was observed by the present system.