Bildiri KoleksiyonuProceeding Collectionhttps://hdl.handle.net/20.500.12511/44662024-03-29T06:20:00Z2024-03-29T06:20:00ZClimate change impact on water structuresŞen, Zekaihttps://hdl.handle.net/20.500.12511/100982022-12-09T07:22:36Z2022-01-01T00:00:00ZClimate change impact on water structures
Şen, Zekai
The literature is full of global warming and climate change impact studies on the environment, ecosystem, and different components of hydrological cycle. Unfortunately, these impacts on engineering structure design, maintenance, and operation and management studies are rather rare. Climate change impact started to play significant role since the last three decades almost in every aspects of life especially on meteorological and climatological events and their impacts on water resources, which are managed by engineering structures. Its effects on hydrometeorological records are searched with objective methodologies quantitatively, but the same is not valid for engineering water structures performances among which are dams, weirs, reservoirs, culverts, channels, bridges, wells, highways and their side drainages, levees, etc. This paper provides the review of the necessary adaptation, combat and mitigation activities against the climate change and variability for protection, construction or augmentation of the engineering water structures design capacity. Land use practices and geomorphological changes also trigger the climate change impacts on the engineering water structures. The main aim of this paper is to present the impact of such changes on the engineering water structure capacity, operation and maintenance.
2022-01-01T00:00:00ZImproving of the angstrom-prescott model using harmonic analysisGüçlü, Yavuz SelimDabanlı, İsmailŞişman, EyüpŞen, Zekaihttps://hdl.handle.net/20.500.12511/12452021-04-12T18:56:46Z2018-01-01T00:00:00ZImproving of the angstrom-prescott model using harmonic analysis
Güçlü, Yavuz Selim; Dabanlı, İsmail; Şişman, Eyüp; Şen, Zekai
The solar energy as one of the most important energy sources is investigated for effective use in a variety of areas. Especially, with the tendency of depletion of fossil fuel consumption as well as their greenhouse gas emissions leading to atmospheric pollution and, hence, global warming and climate change, the value of renewable energy sources and solar energy is increasing rapidly. In the solar energy prediction, the relationship between solar irradiation and sunshine duration plays the most dominant role. The aim of this study is to apply harmonic analysis, coupled with the classical Angström-Prescott equation, to solar irradiation and sunshine duration data for the extraction of its relevant relationship. Firstly, it helps to eliminate the periodicity from the measurement record and then the application of the Angström-Prescott model is applied, which is then tested and compared with the classical Angström-Prescott model based on the regression approach. The applications are achieved by use of measurements at the major city in the south-eastern Anatolian part of Turkey, namely, Diyarbakır. The improved model provides more successful and reliable outputs than the classical approach.
2018-01-01T00:00:00Z