Shoreline delineation and erosion and accretion analysis case study, Rayong, Thailand | |
| Author | Varma, Myla |
| Call Number | AIT Thesis no.RS-17-31 |
| Subject(s) | Shorelines--Thailand--Rayong Erosion--Thailand--Rayong |
| Note | A thesis report submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Remote Sensing and Geographic Information Systems |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. RS-17-31 |
| Abstract | Coastal areas have been acting as the hub for diversified ecosystems and valuable resource that nature provided to the mankind. These coasts shape the world landmass dynamically, there are many factors that affect the shoreline change a couple of natural phenomenon are studied in this research study i.e., eros ion and accretion. Erosion and accretion are mainly caused due to the acting of waves on the shoreline. Due to the rapid changing world, the shoreline analysis is not only restricted to curiosity of the scientists alone but also engineers who work on diversified streams of sciences. Some other factors for shoreline change are global sea level rise, global warming, human activities like urbanization, coastal explorations for both commercial and recreational purposes. In this research, the shoreline change rate is calculated with the help of Landsat imagery. The historical shoreline change of 20 years area studied with an interval of every 5 years and the latest GPS digitized shoreline data are mostly used for these type of study. The se methodologies adopted in this type of studies are extracting the shoreline using remote sensing techniques i.e., band rationing, thresholding etc., the line where land and water meets is considered as high - water level (HWL) for delineation of shoreline form sea wat er . For this study, digital shoreline analysis systems (DSAS) tool an ArcGIS extension is used for shoreline change rate analysis. This tool uses the transects based analysis mechanism, for this purpose transects of 1000m are generated at a equal interval s of 50m. Polygon based analysis is adopted for detecting the areas affected by the erosion and accretion phenomenon. The areas affected by the severe erosion and accretion are only presented in this study. Rayong is one of the eight provinces of the eastern region of Thailand. The historical data of rayong province had been studied in this analysis as due to the establishment of industrial e state, construction of ports and luxurious beach resort for tourism and exploration of shoreline for aquaculture made the rayong focus of study. Neon Kho, kram has been categorized as the severely eroded area as these spot of the shoreline experiences the highest rate of erosion at a rate of 8 m/yr. The areas which experienced high accretion at a rate of 8 – 19 m/yr are Pak nam krasea, khlong pun and moderate part of the phang rat. According to polygon analysis the maximum erosion and accretion observed are 1389155 sq m and 2612731 sq m respectively. |
| Year | 2017 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. RS-17-31 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Remote Sensing (RS) |
| Chairperson(s) | Tripathi, Nitin K. |
| Examination Committee(s) | Pal, Indrajit;Apichon Witayangkurn |
| Scholarship Donor(s) | AIT Fellowship |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2017 |