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RISStochastic Theory for Irregular Stream Modeling. II: Solute Transport
Publisher: American Society of Civil Engineers
Abstract: A stochastic theory is developed for longitudinal dispersion in natural streams. Irregular variations in river width and bed elevation are conveniently represented as one-dimensional random fields. Longitudinal solute ...
Hierarchical Patch Dynamics Modeling of Near-Well Dynamics in Complex Regional Groundwater Systems
Publisher: American Society of Civil Engineers
Abstract: One of the challenges in groundwater modeling is the prediction of hydraulic head in close proximity to a pumping well using a regional-scale model. Typical applications of numerical models to field-scale problems generally ...
Approximate Analytical Solution to Groundwater Velocity Variance in Unconfined Trending Aquifers in the Presence of Complex Sources and Sinks
Publisher: American Society of Civil Engineers
Abstract: In this paper, we present a stochastic-analytical approach for uncertainty modeling in two-dimensional, statistically nonuniform groundwater flows. In particular, we develop simple closed-form expressions that can be used ...
Improved Finite-Analytic Methods for Steady-State Transport Problems
Publisher: American Society of Civil Engineers
Abstract: In this paper, an improved finite-analytic method is developed for solving solute transport problems. Specifically, a new local boundary approximation and an alternative technique are introduced for deriving the local ...
Stochastic Theory for Irregular Stream Modeling. Part I: Flow Resistance
Publisher: American Society of Civil Engineers
Abstract: A stochastic theory is developed for predicting flow resistance in natural rivers. Irregularly varying river width and bed elevation are represented as one‐dimensional spatial random fields. Large‐scale random flow ...
Modeling Fen Hydrology to Inform Recovery of the Endangered Hine’s Emerald Dragonfly
Publisher: American Society of Civil Engineers
Abstract: It is generally recognized that fens and the rare species they support can only be effectively managed and protected by treating them as part of a larger, connected groundwater system. However, this underlying groundwater ...
Modeling Fen Hydrology to Inform Recovery of the Endangered Hine’s Emerald Dragonfly
Publisher: American Society of Civil Engineers
Abstract: It is generally recognized that fens and the rare species they support can only be effectively managed and protected by treating them as part of a larger, connected groundwater system. However, this underlying groundwater ...
Hierarchical Modeling and Parameter Estimation for a Coupled Groundwater–Lake System
Publisher: American Society of Civil Engineers
Abstract: In this paper, a generalized hierarchical multiscale approach for modeling coupled groundwater and surface water systems is demonstrated. Groundwater–lake interactions are simulated by coupling the groundwater equations ...
Opportunities and Challenges of Integrated Large-Scale PFAS Modeling: A Case Study for PFAS Modeling at a Watershed Scale
Publisher: ASCE
Abstract: The number of poly- and perfluoroalkyl substances (PFAS) and their sources, fates, and avenues of transport is vast. With every new discovery, a new question arises regarding the impact they are having on the environment. ...