Search Results - "Hunt, A. G."

Counter‐gradient variation in gene expression between fish populations facilitates colonization of low‐dissolved oxygen environments by Fox, Janay A., Hunt, David A. G. A., Hendry, Andrew P., Chapman, Lauren J., Barrett, Rowan D. H.

“…The role of phenotypic plasticity during colonization remains unclear due to the shifting importance of plasticity across timescales. In the early stages of…”
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Are we there yet? Inter- and intraspecific approaches to evaluating phenotypic optima in a range expanding East African fish, Enteromius apleurogramma (Cyprinidae) by Hunt, David A G A, Hendry, Andrew P, Chapman, Lauren J

“…Abstract We explored how range expansion of freshwater fishes coincident with climate warming is affected by, and then in turn affects, responses to a second…”
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Prodigious degassing of a billion years of accumulated radiogenic helium at Yellowstone by Lowenstern, J. B., Evans, W. C., Bergfeld, D., Hunt, A. G.

“…The study of gas emission rates, chemistry and isotopic analyses show that the rate of helium-4 emission from the crust at Yellowstone is orders of magnitude…”
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Effects of insularity on genetic diversity within and among natural populations by Hunt, David A. G. A., DiBattista, Joseph D., Hendry, Andrew P.

“…We conducted a quantitative literature review of genetic diversity (GD) within and among populations in relation to categorical population size and isolation…”
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Hydrothermal Activity in the Southwest Yellowstone Plateau Volcanic Field by S. Hurwitz, R. B. McCleskey, D. Bergfeld, S. E. Peek, D. D. Susong, D. A. Roth, J. D. G. Hungerford, E. B. White, L. N. Harrison, B. Hosseini, R. G. Vaughan, A. G. Hunt, J. B. Paces

“…Abstract In the past two decades, the U.S. Geological Survey and the National Park Service have studied hydrothermal activity across the Yellowstone Plateau…”
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Continuum percolation theory and Archie's law by Hunt, A. G.

“…Results for the unsaturated hydraulic conductivity, K, are adapted to generate the electrical conductivity, σ, as a function of moisture content, θ. The result…”
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Old groundwater in parts of the upper Patapsco aquifer, Atlantic Coastal Plain, Maryland, USA: evidence from radiocarbon, chlorine-36 and helium-4 by Plummer, L. N., Eggleston, J. R., Andreasen, D. C., Raffensperger, J. P., Hunt, A. G., Casile, G. C.

“…Apparent groundwater ages along two flow paths in the upper Patapsco aquifer of the Maryland Atlantic Coastal Plain, USA, were estimated using 14 C, 36 Cl and…”
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Continuum percolation theory for water retention and hydraulic conductivity of fractal soils: estimation of the critical volume fraction for percolation by Hunt, A.G

“…Systematic experimental deviations from theoretical predictions for water retention characteristics of fractal porous media develop at a moisture content, θ d…”
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Percolation-based effective conductivity calculations for bimodal distributions of local conductances by Hunt, A.G., Idriss, B.

“…Several percolation-based schemes for calculating the effective conductivity of complex, correlated media with bimodal distributions of the local conductivity…”
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Quality and Age of Shallow Groundwater in the Bakken Formation Production Area, Williston Basin, Montana and North Dakota by McMahon, P.B., Caldwell, R.R., Galloway, J.M., Valder, J.F., Hunt, A.G.

“…The quality and age of shallow groundwater in the Bakken Formation production area were characterized using data from 30 randomly distributed domestic wells…”
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Applications of percolation theory to porous media with distributed local conductances by Hunt, A.G.

“…Critical path analysis and percolation theory are known to predict accurately dc and low frequency ac electrical conductivity in strongly heterogeneous solids,…”
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Impact Event at the Permian-Triassic Boundary: Evidence from Extraterrestrial Noble Gases in Fullerenes by Becker, Luann, Poreda, Robert J., Hunt, Andrew G., Bunch, Theodore E., Rampino, Michael

“…The Permian-Triassic boundary (PTB) event, which occurred about 251.4 million years ago, is marked by the most severe mass extinction in the geologic record…”
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Scale-dependent hydraulic conductivity in anisotropic media from dimensional cross-over by Hunt, A. G

“…A cross-over from 1D conduction to 3D conduction with increasing scale is shown to account for the kind of scale-dependent hydraulic conductivity sometimes…”
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Application of critical path analysis to fractal porous media: comparison with examples from the Hanford site by Hunt, A.G, Gee, G.W

“…Critical path analysis from percolation theory is used to calculate the unsaturated hydraulic conductivity, K( S), of soils with pore space compatible with a…”
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Longitudinal dispersion of solutes in porous media solely by advection by Hunt, A.G., Skinner, T.E.

“…The purpose of this work is to predict the transport of non-sorbing solutes through water flow in the subsurface. We derive what we consider to be the first…”
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ON THE VANISHING OF SOLUTE DIFFUSION IN POROUS MEDIA AT A THRESHOLD MOISTURE CONTENT by Hunt, A. G., Ewing, R. P.

“…It was recently shown that the solute diffusion coefficient tends to zero at some threshold water content. We examine this phenomenon in light of recent…”
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Predicting Characteristics of the Water Cycle From Scaling Relationships by Hunt, A. G., Faybishenko, B., Ghanbarian, B.

“…Over multi‐decadal time scales, assuming that changes in subsurface water storage are negligible, the continental precipitative water flux, P, can be divided…”
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Unfolding the relation between global temperature and ENSO by Tsonis, A. A., Elsner, J. B., Hunt, A. G., Jagger, T. H.

“…An analysis of global temperature and ENSO data indicates that their relationship is more complicated than currently thought. Indeed, it appears that there are…”
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Continuum percolation theory for pressure–saturation characteristics of fractal soils: extension to non-equilibrium by Hunt, A.G.

“…Systematic experimental deviations from theoretical predictions derived for water retention characteristics of fractal porous media have previously been…”
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What's Wrong with Soil Physics? by Hunt, A. G., Ewing, R. P., Horton, R.

“…Soil physics has a dual identity—it is both a branch of physics and a branch of soil science—but its legitimacy as a science depends on its claim to be…”
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