p .. KU 40(5)

Abstract

ABSTRACT Loi Island is connected with Sri Racha, Chonburi Province by a bridge. The fishermen and tourists use this island in many purposes. This research was investigated during September 2004-June 2005. Many kinds of data resource were used in this study such as geoinformatic system data and seawater current. From the final result showed that coastline is dynamics changed in every years and sensitive for protecting. The unique image in year of 2001 depicted a new bridge. Abandon of suspended solid was distribution around the coast. From human activity, size of Loi Island nowadays bigger than in year 1997 about 1.4 times, this was easy to interpret by remote sensing data. Although shape of new bridge was changed but seawater movement still having the same direction and speed have a little bit changed less than 10 % since under the bridge was still shallow. The seawater could not move in easy way