HR: 14:55h
AN: H22F-06    [PDF]
TI: A generalized hierarchical paradigm for modeling and visualizing complex groundwater systems across-multiple spatial scales
AU: Liu, Q
AF: Department of Civil and Environmental Engineering, Michigan State University, A133, Research Complex Engineering, East Lansing, MI 48824 United States
AU: * Li, S
EM: lishug@egr.msu.edu
AF: Department of Civil and Environmental Engineering, Michigan State University, A133, Research Complex Engineering, East Lansing, MI 48824 United States
AB: We present in this paper a generalized hierarchical framework for modeling and visualizing complex groundwater systems across multiple spatial scales. A large-scale regional system is converted into a cascade of nested subsystems that are modeled sequentially with finer and finer resolution over a smaller and smaller domain. Higher levels are used to simulate larger scale dynamics whereas nested lower levels are used to simulate faster and smaller-scale processes. The upper level exerts constraints (e.g., as boundary conditions) to the lower level, whereas the rapid dynamics at lower level are aggregated (scaled up) and only manifest as aggregated effective values, providing initiating conditions to the upper. The subsystems at the same level interact with each other through their "parent" or "grand parent", etc. We implement the generalized hierarchical modeling paradigm in a sophisticated object-oriented, interactive software environment, called Interactive Groundwater. The system is designed such that a modeler can initiate on-line, interactively, and graphically an arbitrary number of submodels, submodels in a submodel, or most generally, a hierarchy of dynamically linked models and visualize in real-time multi-scale flow and transport. This generalized hierarchical paradigm eliminates the infamous "curse of dimensionality" in large-scale modeling and allows characterizing complex groundwater systems with unprecedented resolution and efficiency. At the meeting, we will demonstrate live the innovative software environment and the power of real-time hierarchical groundwater modeling.
UR: http://www.egr.msu.edu/~lishug/igw
DE: 1829 Groundwater hydrology
DE: 1831 Groundwater quality
DE: 1832 Groundwater transport
SC: Hydrology [H]
MN: 2003 Fall Meeting