Akademik Veri Yönetim Sistemi
30 Years of Progress in Radar Altimetry Symposium, Montpellier, Fransa, 2 - 07 Eylül 2024, ss.230, (Özet Bildiri)
The aim ofthis look at is to investigate the modifications in water level and surface area of Lake İznik, placed in Northwest Anatolia, Turkey, among 2015 and 2024. For this purpose, in-situ and satellite altimetry-based water level data between 2015 and 2024, temperature and precipitation facts to decide the primary indicator of drought tahat Standardized Precipitation Index (SPI), and Standardized Precipitation Evapotranspiration Index (SPEI), and satellite images to estimate the lake surface area have been utilized. Water level records have been acquired from Hydroweb and the Turkish State Hydraulic Works, temperature and precipitation data from the Turkish State Meteorological Service, and Sentinel-2 satellite images from the Copernicus Data Browser. The trend of Lake İznik's waterstage between 2014 and 2024 was estimated as 22.9 ± 0.6 cm/yr and 22.6 ± 0.6 cm/yr respectively from each in-situ and satellite altimetry dataset, whilst a decrease of approximately 3 km² turned into determined within the surface area. The decrease in lake surface area became decided the usage of ESA's SNAP software program and Google Earth Engine tools. These findings suggest a decrease in each the water degree and surface place of Lake İznik. Additionally, SPI and SPEI derived from precipitation and temperature records obtained from meteorological stations close to the lake had been tested. These signs reveal a decreasing in precipitation and an increase in temperatures in the Lake İznik basin during the last 10 years. This showsthat change within the water level and surface of Lake İznik are prompted by way of climate change, emphasizing the importance of taking important measures for the conservation and sustainable use of the lake. This study is supported by YTU-Scientific Research Project Coordination (Project ID: 6190).