Do traditional techniques for investigating hydrologic problems work in wetlands?
Scientists commonly investigate hydrologic questions by determining how much water is moving through a system, and what that water is carrying. This understanding is then used to characterize how the system functions, and how it interacts with the surrounding landscape. Our work focused on evaluating how well these traditional methods work in wetland investigations. Measuring water flows: Traditionally, a relation called Darcy’s law has been successfully applied to ground-water problems in non-wetland areas. Darcy’s law relates the flow of ground-water to the strength of the pressure driving the system (the gradient) and how easily the water can flow through the material (the material’s hydraulic conductivity). Our work has demonstrated that in many cases this simple relation underestimates the amount of ground-water flow in wetlands (fig.
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