Spatio-temporal modeling of 210Pb transportation in lake environments

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

“…Each (water and sediment) sample is divided into three equal parts. Each part is evaporated at low temperature (about 60 • C) until a small amount of water remained [10,22,40]. The residue is poured into 4.6 cm 3 aluminum planchette and then dried.…”

“…The drawbacks are due to either non-normal (asymmetric) distribution of data and/or irregularity of sampling positions. However, the semivariogram technique, developed by Matheron [17], and used by many researchers [14,22,28,30,39,[41][42][43] in diverse fields, such as geology, mining, hydrology, earthquake prediction, and groundwater, can be used to characterize spatial variability. The SV is a prerequisite for best linear unbiased prediction of regionalized variables through the use of kriging techniques [18].…”

“…Classical variogram methodologies and conceptional knowledge of the analyses technique is well explained elsewhere [22,40]. Besides, Külahcı and Ş en have proposed a new model which can be analysed spatio-temporal transport of any particle [22].…”

“…Classical variogram methodologies and conceptional knowledge of the analyses technique is well explained elsewhere [22,40]. Besides, Külahcı and Ş en have proposed a new model which can be analysed spatio-temporal transport of any particle [22]. Spatial data shows the regional variation within the water body as temporal changes temporally and the variation depends on environmental (meteorological, hydrological, geological, anthropogenic) conditions after the lateral mixture in the fore-bay and reservoir.…”

Proposals for risk assessment of major cations in surface water and deep sediment: iso-cation curves, probabilities of occurrence and non-occurrence of cations

“…Risk levels for different cations are presented through Weibull, lognormal and exponential models, and the theoretical probability distribution function (pdf) and cumulative distribution function (cdf) of each cation measurement location are obtained. In addition, the spatial and transport characterisations of the cations are established using two-dimensional iso-curves created using the Kriging methodology (You et al 2016;Külahcı and Ş en 2009;Matheron 1963).…”