Hochschule Ravensburg-Weingarten

Strukturbaum

Publikation

Autoren des Beitrags	Putyrskaya V., Klemt E.:
Titel des Beitrags	Modeling Cs-137 migration processes in lake sediments.
Titel veröffentlicht in ...	Journal of Environmental Radioactivity
Verlag	Elsevier Science Ltd.
Erscheinungsjahr	2007	Seite (von - bis)	54-62	Publikations-Art	Peer-Reviewed Article	Band/Jahrgang/Volume	Volume 96, Issues 1-3
URL :	http://www.elsevier.com/locate/jenvrad
Abstract :	Lake sediments can be considered as the diary of the lake: new layers are continuously deposited on top of the sediments. The migration behavior of radionuclides, particularly of 137Cs, can be analyzed by modeling the input into and the vertical distribution within the sediment. For this purpose, a model consisting of sedimentationdiffusion equations was developed. Solved with a finite element method, this model can cover the time period from the nuclear weapons testing to the present. It takes into account fixation and redissolution, compaction of sediments, and the influence of competing ions on the retarded diffusion within the sediments. The outcome of the model is compared to water and sediment measurements from Lago Maggiore. The results of an optimization process can produce the sedimentation rate and 137Cs distribution coefficients which determine the uptake of activity into the sediment and also the retarded diffusion within the sediment.
Einrichtungen	Hochschule Ravensburg-Weingarten Bachelorstudiengang Physikalische Technik Masterstudiengang Umwelt- und Verfahrenstechnik Fakultät Technologie und Management Institut für Angewandte Forschung (IAF) Schwerpunkt Energie und Umwelt (IAF)
Beteiligte Personen	Klemt , Eckehard Prof. Dr. rer. nat.
Projekte	Radioökologische Studien und Untersuchungen Wissenschaftliche Veröffentlichungen