1. Environmental Hydrology Visualization
Have:
Vis5D
SGI Explorer
Fluid Tracers
VisAD
Cave5D
nViz
GeoVis…
Need:
Access to Distributed Large datasets
Cross platform
Cluster algorithms
Lightweight component
Auto-data translators
Metadata support
Heterogeneous format support
Component Libraries
Real-time GIS/Model
Distance collaboration
Vector/raster
Nested grid

2. Flow Modeling in Large Scale Systems
Mississippi RiverWeb Consortium: Computational science in informal education
GIS: Terrain, Bathymetry, Land Use
Linked data (fisheries, flow, etc)
2D flow models
Visualization
Digital River Basin: Multi-user simulation, high-resolution visualization, multi-modal interaction (location detection, touch interface…)

3. Digital River Basin Model driven query User driven query
Composite data
Metadata
X 20

4. Status Report
infrastructure/code development completed since October 1
Prototype coupled model/visualization application for museum project:
High resolution plasma display
Inter-processor communication
“Single user” highly interactive
VTK/Performer

5. Status Report: Efforts Underway
Next phase coupled model/visualization (alpha - 12/00)
Multiple high resolution displays
Multiple users
Multi-processor
Full database interaction (postgres)
Coupled model (runoff/channel)
Web portal interface (9/01)

6. Status Report: Efforts Underway
Re-examination of high-resolution parallel overland flow model (funded outside of PACI EHAT)
kinematic wave equation- time-dependent two dimensional nonlinear problem on a large domain
additive schwartz method to solve the large domain finite difference method to discretize.
Implicit scheme in time direction to solve instability.
First-order Taylor series expansion to linearize the nonlinear algebraic system at each time step.
Scalable parallel preconditioners and Krylov subspace methods including ICC, ILU, block Jacobi and so on to solve the linearized algebraic system.

7. Projected Impact
What is the current usage of the infrastructure/code? Or what is the projected usage during the next 6 months?
Museum: 100,000 in first 2-3 months
What is the current community interest in such infrastructure?
USEPA Fox River Management
NSF Illinois River …
How broad might the community impact be?
Necessary interest in multiple communities

8. Interconnections:
What infrastructure that you are developing is dependent on other Alliance or EH infrastructure?
PETSc, HDF, VisBench, Globus (poss.)
What Alliance people outside EH do you interact with?
Data Mining and Visualization (Baker, Welge, Folk, Rajlich, Khakshour, etc.)
EOT (Curtis, Sonin)
Government (Prudhomme, et al.)