Séminaire de Tim Ginn (University of California, Davis UCD)


 AHLeGall    13/06/2013 : 21:59

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Le jeudi 13 juin 2013 à 13h15, en salle de réunion de l'OSUR (campus de Beaulieu, bât.

Le jeudi 13 juin 2013 à 13h15, en salle de réunion de l'OSUR (campus de Beaulieu, bât. 14B, 2° étage), Tim Ginn propose un séminaire intitulé

Introduction to exposure-time accounting with applications from groundwater age to population dynamics

Abstract:Many processes invoved in the transformations and transport of biotic and chemical materials in environmental systems depend in some ways on the time that one material is associated with another. Examples include the time that groundwater exists in the subsurface (groundwater age), the total time that solutes spend in proximity to other reactants (geochemical heterogeneity and miscimetry), the exposure of bacteria to solute organic substrate (metabolic lag), the contiguous time bacteria spend attached to a surface (biofilm formation), and the exposure of mobile biotic populations to chemical contaminants (population dynamics with dose-structure). Here I review the extension of basic mass balance accounting for mixtures to the case of exposure-time. This model basis is then demonstrated in several of the above examples.


Contact : Tim Ginn, University of California, Davis (UCD), Department of Civil & Environmental Engineering

Contact OSUR :
Philippe Steer (Géosciences Rennes)
Benjamin Guillaume (Géosciences Rennes)




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