การเปลี่ยนแปลงของชายหาดบ้านกรูดจากการเพิ่มขึ้นของระดับน้ำทะเล

Abstract

The sea level rise is a part of the threats of climate change, it is a cause of beach change problem, especially in the lowland. This affects the human life and properties of people living on the coast. The objective of this research aims to analyze the beach area changes due to the effect of sea level rise in 2100 B.E. The Bruun's Rule and field observed data were used for analysis. The case study is Ban Krut Beach, Bang Saphan District, Prachuap Khiri Khan Province. The characteristic of beach sediment is fine sand, and the range of beach slopes is between 5-11 degrees. This study estimated beach change according to sea level rise from climate change. The results found that beach width changes of RCP 2.6, 4.5, 6.0, and 8.5 is presented with value including -19.70, -24.34, -25.12, and -33.06 meters, respectively. Following these results, the beach area changes can be examined, the changing area value is presented as -0.132, -0.163, -0.168, and -0.221 square kilometers, respectively. This research could be used as a preliminary approach to assessing the risk of the beach area from sea level rise due to climate change, as well as to find appropriate measures to manage coastal areas of Thailand in the near future.