Abstract: A method is presented to compute sensitivities of in-stream dissolved oxygen (DO) with respect to perturbations in the load vector and the reaction coefficients that make up the eutrophication cycle. It is shown that the

Abstract: This paper presents the development of an efficient strategy for achieving in-stream dissolved oxygen (DO) water quality standards (WQSs) via optimized point-load control strategies using the adjoint method. To this end, ...

Abstract: The diversion of fresh water from estuaries for agricultural and municipal uses leads to an upstream shift in the brackish water zone that can disrupt ecosystems and deteriorate water quality at downstream points. Models ...

Abstract: A numerical method is developed to minimize the environmental impact of one or multiple contaminant point sources in a vertically mixed river or estuary. The algorithm is based on a finite-element solution of the adjoint ...

Abstract: A numerical technique is presented for identification of spatially distributed dispersion coefficients for 2D mass transport in vertically mixed rivers and estuaries. The method is based on a nonlinear optimization procedure ...

Abstract: A numerical method is developed for the optimal design of contaminant releases in shallow rivers and estuaries. The algorithm is based on the hypothesis that the control action, at one or more points of release, can be ...

Abstract: A method is presented to optimize diversions of freshwater from multiple points in a well-mixed estuary. The objective is to prevent salinity concentrations at a point in the brackish water zone from exceeding levels that ...

Abstract: A prototype system for a Chesapeake Bay Environmental Observatory (CBEO) is under development by a multidisciplinary team of researchers from the domains of environmental engineering, marine science, hydrology, ecology, ...