Akademik Veri Yönetim Sistemi
8th International Conference on Urban Planning and Architectural Design for Sustainable Development, UPADSD 2023, Florence, İtalya, 24 - 26 Ekim 2023, ss.53-66, (Tam Metin Bildiri)
Urban Heat Island (UHI), which has become a common urban problem all over the world, is affected by Land Surface Temperature (LST) changes. Most of the studies carried out to lower the UHI effect have focused on the use of vegetation in the city. Studies on water surfaces to reduce the negative impact of UHI are limited. The purpose of this research is to examine the influence of water bodies on UHI and the cooling effect. For this purpose, 3 agricultural irrigation ponds were selected as small-scale (Tadım Irrigation Pond), medium-sized (Kavaktepe Irrigation Pond) and large-scale (Cip Irrigation Pond) in the city of Elazığ, Turkey. Landsat 8 and 9 satellite data from April, May, June, July and August of 2022 were used. In this study, remote sensing methods were used. LST and buffer analyzes were performed to determine the cooling effect of water bodies. 5 buffer zones of 100 m each have been created on the outside of these ponds. As a result of the study, significant temperature differences were determined between the LST values of the Central district of Elazığ province and the agricultural irrigation ponds. In July, when the temperature is highest, the average LST values of small, medium and large sized ponds were 4.6 °C, 11.7 °C and 13.7 °C lower than the average LST value of the Merkez District of Elazığ province, respectively. As the pond size increased, the difference between the average LST values of the irrigation ponds and the Central district of Elazığ increased. In this study, in which the cooling effect of the ponds was determined, it was observed that no cooling effect was observed in the small-scale irrigation pond. It has been determined that the cooling effect is up to 200 m in medium-sized irrigation ponds and up to 500 m in large-scale irrigation ponds. It has been determined that the average LST values determined up to these distances are lower than the average LST value of the city center. The highest cooling effect in medium and large sized ponds was determined in May and June. The cooling effect decreased due to the evaporation on the water surfaces and the decrease in the water areas of the ponds due to agricultural irrigations after June. According to the results of this study, it is predicted that the cooling effect of these ponds will contribute positively to both UHI and the thermal comfort of the city.