Jeomorfolojik Araştırmalar Dergisi
Yazarlar: Seçkin ÇAKMAK, Tuncer DEMİR, Ahmet Serdar AYTAÇ
Konular:Fiziki Coğrafya
DOI:10.46453/jader.893216
Anahtar Kelimeler:Dissolved Sediment Concentration,Flow,Precipitation,Korkuteli Stream
Özet: The sediment transported by rivers are considered an indicator of the geochemical cycle, soil losses, erosion rates and denudation processes, and it is estimated that rivers transport approximately 20 billion tons of sediment to oceans and seas each year. Many studies on sediment transported by fluvial processes have focused on solid sediment in suspended form, and the dissolved sediment transported has generally been neglected. Although suspended sediments constitute a significant part of the sediment load in rivers, the dissolved sediment, especially in areas where soluble rocks are common, may constitute a large amount of the total sediment load. The aim of this study is to analyze dissolved sediment variability over a period of 12 months in the Korkuteli Stream, and to evaluate the relationship between water discharge, dissolved sediment and precipitation. The water level recorded automatically every 10 minutes using a Mesens (MPS580 Series) Immersion Type Level Transmitter and the water velocity was measured with a Universal Current Meter. The sediment samples were taken using a US-DH48 depth integration sampler and were analyzed by filtration method in laboratory. Results show that a strong relationship exists between flow and dissolved sediment concentration (R2: 0,96). During the winter period, the discharge showed a regular pattern flow characteristics rather than a sudden fluctuation observed in spring and summer months due to low intensity and long-term precipitation in winter months. The results revealed that, unlike the summer months, which are characterized by short-term heavy rainfall events, the amount of dissolved sediment transported during the winter months is less due to low intensity long duration of rainfall events. High intensity, heavy rainfall during the summer period, especially in June, resulted in the amount of discharge reaching the highest values and thus, despite the low dissolved concentration, greater amount of dissolved sediment transport was measured.