“…For assessing that overall process, there are conducted both field observations and experimental simulations in laboratory. The in situ investigation and the modeling of the role played by the colloidal matter and by the suspended particulate matter are mainly concerned with the saturated region of the water-bearing structures (e.g., Baik et al, 2010;Grambow, 2008;Kelkar et al, 2010;Laverov et al, 2010;Mal'kovskii, 2011;Malkovsky, 2011;Mazurek et al, 2011;Pourret et al, 2010;Severino et al, 2007;Utsunomiya et al, 2009). The modeling of the radionuclides migration in the unsaturated zone is addressed, as a general rule, by laboratory experiments (e.g., Ku et al, 2009;Massoudieh & Ginn, 2007).…”