Paper Title
Assessing Shoreline Change in the Face of Sea Level Rise:Insights From Songkhla Tourism Beach, Thailand

Abstract
Various natural and anthropogenic influences are causing transformations in the shoreline layouts and locations of coastal areas’ landscapes. The increasing sea levels driven by climate change highlight the need to understand how shorelines will change over time, which is vital for effective management and strategic planning. The enduring consequences of rising sea levels on shoreline dynamics are intricate and diverse, with instances of both retreat and advancement being documented in various locales. This research aims to compare the impacts of sea level rise on prolonged shoreline evolution, providing insights into both retreat and advancement trends along the Songkhla tourism beach in Thailand. The Digital Shoreline Analysis System (DSAS) is used in this investigation to assess the shoreline and quantity of shoreline alterations, which are then compared to historical patterns. The Bruun rule, which correlates sea level rise with shoreline retreat, is an employed model for forecasting potential consequences of future sea level increases. Results found that, under the worst-case scenario (SSP 5-8.5), sea level rise is expected to cause a shoreline retreat of -44.22 meters by 2100. Historically, the northern section of Chalathat Beach has experienced a shoreline recession of -0.52 meters/year, with a projected total loss of -39.52 meters by the end of the century. In contrast, the southern part of the study area shows a depositional trend, with an annual increase of 0.66 meters, resulting in an anticipated shoreline expansion of +50.16 meters by 2100. Shoreline changes driven by sea level rise have surpassed the historical rates on erosional beaches. Meanwhile, depositional beaches have undergone change higher to lower change of shoreline deposition. The impact of sea level rise is linked to changes in shoreline erosion and deposition. Considering sea level rise is essential for assessing future shoreline changes, which is crucial for effective coastal zone management and planning. Keywords - Sea Level Rise, Shoreline Change, Coastal Erosion, Digital Shoreline Analysis System, Bruun Rule.