THE ???AQUASCOPE??? SIMPLIFIED MODEL FOR PREDICTING 89,90Sr, 131I, and 134,137Cs IN SURFACE WATERS AFTER A LARGE-SCALE RADIOACTIVE FALLOUT

Abstract

Simplified dynamic models have been developed for predicting the concentrations of radiocesium, radiostrontium, and I in surface waters and freshwater fish following a large-scale radioactive fallout. The models are intended to give averaged estimates for radionuclides in water bodies and in fish for all times after a radioactive fallout event. The models are parameterized using empirical data collected for many lakes and rivers in Belarus, Russia, Ukraine, UK, Finland, Italy, The Netherlands, and Germany. These measurements span a long time period after fallout from atmospheric nuclear weapons testing and following the Chernobyl accident. The models thus developed were tested against independent measurements from the Kiev Reservoir and Chernobyl Cooling Pond (Ukraine) and the Sozh River (Belarus) after the Chernobyl accident, from Lake Uruskul (Russia), following the Kyshtym accident in 1957, and from Haweswater Reservoir (UK), following atmospheric nuclear weapons testing. The AQUASCOPE models (implemented in EXCEL spreadsheets) and model documentation are available free of charge from the corresponding author.

Cesium accumulation by fish following acute input to lakes: a comparison of experimental and Chernobyl-impacted systems

“…(1) has been used to predict Cs movement through lake food webs (Monte et al, 2003) in the models AQUA-SCOPE (Smith et al, 2005) and ECOPRAQ (Comans et al, 2001). Other, more mechanistic models (e.g., Hakanson, 2000) exist to predict Cs behavior in lake food chains, but Eq.…”

Initial flux of sediment-associated radiocesium to the ocean from the largest river impacted by Fukushima Daiichi Nuclear Power Plant

“…A modeling approach was adopted using “AQUASCOPE”, a simplified dynamic model to predict radiocesium, radiostrontium, and radioiodine concentrations in river basin sediments and fishes. Using this approach Smith et al11 determined model outputs for the Kiev Reservoir and Chernobyl cooling pond using parameterization data derived from several monitoring sites situated across since the end of the atomic testing era and following the Chernobyl accident.…”

137Cs in Lake Tapeliai, Lithuania

“…In autumn, under conditions of gravitational and wind stress induced mixing, this additional amount of radiocesium is equally distributed over the whole water column increasing its total inventory in the lake. This phenomenon is well known in the literature [31,32].…”