Mechanistic Relationships for Physical Nonequilibrium Phenomena in Vadose Zone Transport

9309050梅耶尔这是一个支持研究的奖项，其目标是建立和验证地下水中污染物的物理非平衡运动的力学关系，作为地下水中流动发生在地下水位以上的非饱和带中的介质的物理性质的函数。该项目涉及使用四种不同的多孔介质进行实验，这些介质来自密歇根州基韦诺半岛的硅砂，其中有机物质很少或根本不含，微孔率很少或根本没有。根据颗粒大小，沙子将被分成四个组分，以获得验证流动数学模型所需的孔隙大小特性的必要变化。导致这一奖项的提案是根据NSF 92-122《研究启动奖计划公告和指南》提交的。预计结果将提高对非饱和带中溶质运移的预测能力。这反过来又有望提高预测地下水污染物和污染物运动特征的能力，以便潜在地用于受池塘、地表和地下储水池和垃圾填埋场渗漏污染的地下水补救系统的工程设计。

9309050 Mayer This is an award to support research, the objective of which is to formulate and validate mechanistic relationships for physical nonequilibrium movement of contaminants in groundwater as a function of the physical properties of the media through which flow occurs in the unsaturated zone above the water table. The project involves experiments with four different porous media derived from a silica sand obtained from Michigan's Keweenaw peninsula containing little or no organic matter and exhibiting little or no micro-porosity. The sand will be separated into four fractions based on particle sizing to obtain the requisite variations in pore-size characteristics necessary to validate the mathematical models of flow. The proposal leading to this award was submitted in response to NSF 92-122, Research Initiation Awards Program Announcement and Guidelines. Results are expected to improve the predictive capabilities for transport of solutes in the unsaturated zone. This in turn is expected to provide improvement in the ability to predict the movement characteristics of groundwater pollutants and contaminants for potential use in engineering design of remediation systems for groundwater polluted by seepage from ponds, surface and subsurface storage tanks and landfills.