Mantha S. Phanikumar

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25 There are a growing number of large-scale, complex hydrologic models that are capable of 26 simulating integrated surface and subsurface flow. Many are coupled to land-surface energy 27 balance models, biogeochemical and ecological process models, and atmospheric models. 28 Although they are being increasingly applied for hydrologic prediction and(More)
This paper describes the design and hydraulic characterization of a cost-effective biocurtain that is currently being used to remove carbon tetrachloride from an aquifer in Schoolcraft, Michigan. Novel aspects of the design are the use of closely spaced wells to recirculate solutes through a biocurtain, well screens spanning the vertical extent of(More)
a r t i c l e i n f o The longitudinal dispersion coefficient (D) is an important parameter needed to describe the transport of solutes in rivers and streams. The dispersion coefficient is generally estimated from tracer studies but the method can be expensive and time consuming, especially for large rivers. A number of empirical relations are available to(More)
In this paper, we describe a novel manifold-based interpolation method for sensed environmental data. Furthermore, we present initial results for applying the proposed method to estimate wind speed and direction around Lake Michigan. The proposed method is showing promising results based on the hypothesis that an environmental dataset (including longitude,(More)
[1] Large rivers are major conduits for sediment and nutrient transport and play an important role in global biogeochemical cycles. While smaller rivers received attention in recent decades for hyporheic exchange and nutrient uptake, fewer studies have focused on the dynamics of surface storage zones in large rivers. We investigate transport dynamics in the(More)
Keywords: Push–pull test Pump test Inverse modeling Microbial processes Dispersion Reaction Sorption In situ rate estimation PPTEST Mobile–immobile a b s t r a c t Push–pull tests are a popular technique to investigate various aquifer properties and microbial reaction kinetics in situ. Most previous studies have interpreted push–pull test data using(More)
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