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Can I read Ergodicity and the ‘Scale Effect’ on EtoBox?
Ergodicity and the ‘Scale Effect’ by Garrison Sposito is a Environmental Science article available to read on EtoBox.
What is Ergodicity and the ‘Scale Effect’ about?
Solute plume spreading in an aquifer exhibits a 'scale effect' if the second spatial concentration moment of a plume has a non-constant time-derivative. Stochastic approaches to modeling this scale effect often rely on the critical assumption that ensemble averages can be equated to spatial averages measured in a single field experiment. This ergodicity assumption should properly be evaluated in a strictly dynamical context, and this is done in the present paper. For the important case of trace plume convection by steady groundwater flow in an isotropic, heterogeneous aquifer, ergodicity does not obtain because of the existence of an invariant function on stream surfaces that is not uniform throughout the aquifer. The implications of this result for stochastic models of solute transport are discussed.
Who reads Ergodicity and the ‘Scale Effect’?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Garrison Sposito
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0309-1708)
- Published
- 1997
- Language
- EN
- Field
- Environmental Science (Physical Sciences)