||Environmental Protection Agency's Direct/Delayed Response Project: The Role of a Geographic Information System.
Campbell, W. G. ;
Bishop, G. D. ;
Church, M. R. ;
Lee, J. J. ;
Lammers, D. A. ;
||Corvallis Environmental Research Lab., OR. ;Northrop Services, Inc., Corvallis, OR. ;Pacific Northwest Forest and Range Experiment Station, Corvallis, OR. Forestry Sciences Lab.
Information systems ;
Surface waters ;
Soil properties ;
Acid deposition ;
Environment effects ;
Direct Delayed Response Project
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The Direct/Delayed Response Project (DDRP) examines the question 'What is the possible future long-term response of the chemistry of surface waters to continued acidic deposition'. The Geographic Information System (GIS) plays a vital role in a variety of analytical procedures and predictive models. Specific GIS-related tasks within the DDRP includes: the characterization of individual watersheds; the analysis and mapping of regional characteristics; the mapping, display, interpolation and contouring of input/output data; the analysis and mapping of other relevant lake and/or stream chemical data; and the display and interpretation of regional or sub-regional variations in adsorptive characteristics of watersheds. These types of GIS-based analyses contribute significantly to all levels of research within the DDRP. The ability to incorporate and analyze tabular and/or mapped data within the GIS allows researchers at the EPA's Environmental Research Laboratory in Corvallis, Oregon to interactively examine and test various hypotheses concerning the long-term response of surface waters to continued acidic deposition.