Temporal change of Son Island in Bassac River, Can Tho city, Vietnam by remote sensing

Abstract

This study utilizes remote sensing to assess the temporal variation of Son island on the Bassac river, Can Tho city, Vietnam, from 1987 to 2020. The findings indicate that the evolution of Son Island can be divided into two distinct periods. From 1987 to 2013, the island experienced significant downstream migration, covering a distance of approximately 250 meters. In contrast, the period from 2013 to 2020 showed stability, with no significant changes in the island's area or center of gravity. Despite noticeable fluctuations in the island's area throughout the observed period, no clear trend was identified, suggesting overall stability. These fluctuations are likely due to errors in image analysis caused by the coarse resolution of landsat images, tidal effects, and vegetation changes along the island’s banks. The migration of Son island is attributed to erosion at the island’s head and deposition at its tail.