Detail Abstract

Long-Term Spatiotemporal Analysis of Lake Surface Water for Southeast Asia based on Global Surface Water Dataset

Abstract

Southeast Asia (SEA) hosts a large number of lakes that are crucial for providing essential ecosystem services such as water supply, agriculture, tourism, and recreation. Both direct and indirect factors, such as anthropogenic activities and climate variability and change, have had severe impacts on lakes’ surface water and their extent. This research aims to monitor change in lake surface water areas across the whole SEA by delineating and analyzing multi-resolution long-term satellite imagery.</br>   A methodology has been set up to track and delineate surface water areas over more than 20 years using Landsat-derived datasets. Map generalization methods were applied to ensure spatial and temporal consistency of data. Preliminary results reveal spatial and temporal patterns of surface water extent dynamics, essential for understanding the relative impacts of changing climate and land uses.