Assessing the effect of coastal reclamation in the Map Ta Phut Industial Estate on the distribution of suspended sediments and shoreline changes by using the satellite data
Abstract:
A study about the effects of coastal reclamation on distribution of suspended sediments and shoreline changes near the Map Ta Phut Industrial Estate had been conducted via the data extracted from 8 Landsat TM satellite images during 1987- 2000. In this study, all satellite images mentioned above had been analyzed through the image density slicing technique together with false color composite technique in order to examine the distribution patterns of suspended sediments. It was found that the coastal reclamation had blocked longshore sediment transport เท each season. In addition, the concentration of suspended sediments was higher during the Southwest Monsoon season than the Northeast Monsoon season. Furthermore, the data extracted from the images obtained from the 3rd band of Landsat TM satellite were higher correlated to the distribution patterns of suspended sediments than those obtained from any other bands. The correlation coefficient was 0.80. The three Landsat TM satellite images (taken in 1988, 1994, and 2000) were used to study shoreline changes via image difference method. It were detected that the area of western coastline of the industrial estate had been increasing more than that of the eastern coastline and the area of eastern coastline of the industrial estate had been decreasing more than that of the western coastline. The accretion and erosion of the western coastline during 1988 - 2000 was estimated as 5,250 and 6,975 square meters per annum while that of the eastern coastline during the same period was estimated as 4,650 and 11,400 square meters per annum.