Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Lynn W. Gelhar"'
Publikováno v:
Journal of Contaminant Hydrology. 42:69-97
A stochastic theory of multiple species transport and transformation is developed for the problem of oxygen-limited biodegradation of contaminants in aquifers, considering the presence of transient microbial growth dynamics. The theory incorporates t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::414b835ee82448b68cc191c28ccf9c0f
https://doi.org/10.1016/s0169-7722(99)00070-4
https://doi.org/10.1016/s0169-7722(99)00070-4
Publikováno v:
Water Resources Research. 33:1251-1263
A three-dimensional analytical model is developed to quantify the process of oxygen-limited biodegradation as it occurs at field scales. The model incorporates the effects of chemical and microbiological heterogeneities inherent to the biodegradation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d47971993e1d7e394bf32e306cf4092c
https://doi.org/10.1029/96wr03957
https://doi.org/10.1029/96wr03957
Publikováno v:
Water Resources Research. 33:527-536
To quantify chemical transformations in natural hydrologic environments, their coupling with spatially varying flows needs to be understood. Consider the elementary bimolecular second-order irreversible chemical reaction for which the transformation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14ed1b27d73535ebec5a18bb75a86dc2
https://doi.org/10.1029/96wr03687
https://doi.org/10.1029/96wr03687
Publikováno v:
Water Resources Research. 32:3451-3459
A stochastic analysis of transport and first-order decay for a solute plume in a three-dimensionally heterogenous aquifer shows that a spatially variable decay rate produces effects both in the transient and steady state characteristics of the effect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36be61ecde8083d64e82c871aa784460
https://doi.org/10.1029/95wr02590
https://doi.org/10.1029/95wr02590
Autor:
Lynn W. Gelhar, Harihar Rajaram
Publikováno v:
Water Resources Research. 31:2469-2482
Dispersivity computations are developed for heterogeneous aquifers which exhibit structured variability across a wide range of scales. Multiscale, fractional Gaussian and self-similar random field models are used to describe the statistical structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::902b16fd6ca21fd467c407234b913ae1
https://doi.org/10.1029/95wr01723
https://doi.org/10.1029/95wr01723
Autor:
Lynn W. Gelhar, Vivek Kapoor
Publikováno v:
Water Resources Research. 30:1789-1801
For a multidimensional finite-size impulse input, analytical solutions to the conservation equation for concentration variance σc2 are presented. Due to the dissipating action of local dispersion, at large times, σc is a decreasing fraction of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3ca33864fd88acc6c6fb50ec31bba70
https://doi.org/10.1029/94wr00075
https://doi.org/10.1029/94wr00075
Autor:
Lynn W. Gelhar, Vivek Kapoor
Publikováno v:
Water Resources Research. 30:1775-1788
The concentration variance, i.e., mean squared concentration fluctuations, undergoes mean advection, a local dispersive flux, and a macrodispersive flux due to a correlation between squared concentration perturbations and velocity perturbations. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b023541b2132c2787cdc12e0860f2c68
https://doi.org/10.1029/94wr00076
https://doi.org/10.1029/94wr00076
Publikováno v:
Advances in Water Resources. 17:259-264
Long-term predictive evaluation of solute transport and transformation in geologic media is a critical element in the performance assessment of nuclear waste geologic repositories and in the environmental restoration or control of contaminated sites
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63cc0f4b37eab88e731e795666e60982
https://doi.org/10.1016/0309-1708(94)90005-1
https://doi.org/10.1016/0309-1708(94)90005-1
Autor:
Lynn W. Gelhar, Claire Welty
Publikováno v:
Journal of Hydrology. 153:71-102
The importance of incorporating nonuniform flow effects in determining field-scale values of long-itudinal dispersivity from tracer tests in aquifers is illustrated. We show that under conditions of Fickian dispersive flux, where a tracer has travele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d67bc566abb78ca018e0e94c0bdade84
https://doi.org/10.1016/0022-1694(94)90187-2
https://doi.org/10.1016/0022-1694(94)90187-2
Publikováno v:
Transport in Porous Media. 49:123-125
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0434ea83ec317ab8c2a85aa8089ba31e
https://doi.org/10.1023/a:1016044009384
https://doi.org/10.1023/a:1016044009384