Modeling radon time series on the North Anatolian fault zone, Turkiye: Fourier transforms and Monte Carlo simulations

A Muhammad, F Külahcı, P Akram - Natural Hazards, 2020 - Springer
Time series studies depend mostly on stochastic models for radon seasonal, annual or
temporal variability explanations. Others solve radon transport steady state equation …

Cumulative Ordinary Kriging interpolation model to forecast radioactive fallout, and its application to Chernobyl and Fukushima assessment: a new method and mini …

F Külahcı, Z Şen - Environmental Science and Pollution Research, 2022 - Springer
Abstract The Cumulative Ordinary Kriging (COK) interpolation method has been proposed
for the spatial prediction of atmospheric radioactive fallout in any given region. COK is built …

On the determination of transportation, range and distribution characteristics of Uranium-238, Thorium-232 and Potassium-40: a critical review

F Külahcı, Ş Çiçek - Environmental earth sciences, 2019 - Springer
This research presents the theoretical and experimental results in real time and suggests
spatial models after reviewing the spatial modelling method, which has an important place in …

A new soil sampling design method using multi-temporal and spatial data fusion

Z Yang, Z Bai, Z Qin - Environmental Science and Pollution Research, 2022 - Springer
The distribution of soil pollutants is receiving increasing attention. The accurate
determination of the soil pollution distribution in an area is becoming more important. To …

Advances on identification and animated simulations of radioactivity risk levels after Fukushima Nuclear Power Plant accident (with a data bank): a critical review

F Külahcı, A Bilici - Journal of Radioanalytical and Nuclear Chemistry, 2019 - Springer
This review study has been based on two main foundations as advances on the attainment
of the risk radioactive fallouts levels, and the applications of methods for risk assessment to …

Potential utilization of the absolute point cumulative semivariogram technique for the evaluation of distribution coefficient

F Külahcı, Z Şen - Journal of hazardous materials, 2009 - Elsevier
The classical solid/liquid distribution coefficient, Kd, for radionuclides in water–sediment
systems is dependent on many parameters such as flow, geology, pH, acidity, alkalinity, total …

Spatial modelling of Cs-137 and Sr-90 fallout after the Fukushima Nuclear Power Plant accident

S Bilici, F Külahcı, A Bilici - Journal of Radioanalytical and Nuclear …, 2019 - Springer
Determination of radionuclides transport characteristics is among the most significant
research topics, which require extensive multidisciplinary works. The spatial modeling …

Transport modeling of 137Cs in soil after Fukushima Dai-Ichi Nuclear Power Plant accident by point cumulative semi-variogram method

S Bilici, A Bilici, F Külahcı - Environmental earth sciences, 2019 - Springer
The positions distribution of the regional variables in space have irregular or sometimes
random scatter. In such a case, their study can be rather difficult and sometimes impossible …

Spatiotemporal (four-dimensional) modeling and simulation of uranium (238) in Hazar Lake (Turkey) water

F Külahcı - Environmental Earth Sciences, 2016 - Springer
A spatiotemporal (four-dimensional) model has been proposed for determining the
transportation characteristics of 238 U. Primarily, three-dimensional distribution of uranium …

Spatiotemporal modeling and simulation of chernobyl radioactive fallout in northern Turkey

S Niksarlıoğlu, F Külahcı, Z Şen - Journal of Radioanalytical and Nuclear …, 2015 - Springer
In this study, the Chernobyl radioactive fallouts are described through the spatio-temporal
point cumulative semivariogram (STPCSV) method, which is used to identify spatial and …