Full Record Display for the EPA National Library Catalog


Main Title Analog Computers for Forest Hydrology Research.
Author Wooldridg, David W. ; Fox, J, John D. ;
CORP Author Washington Univ., Seattle. Inst. of Forest Products.
Year Published 1970
Report Number DI-14-31-0001-3048; OWRR-A-037-WASH; 01411,; A-037-WASH(1)
Stock Number PB-195 783
Additional Subjects ( Hydrology ; Analog simulation) ; ( Forest land ; Hydrology) ; Mathematical models ; Flood routing ; Data processing ; Water supply ; Earth hydrosphere ; Computerized simulation ; Forestry ; Forest hydrology
Library Call Number Additional Info Location Last
NTIS  PB-195 783 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 42p
Abstract The report concentrates on (1) describing mathematically soil-plant-atmosphere systems in terms of water balance and continuity of mass equations and (2) working with analog computer theory and programming techniques for modeling above relations. The investigation suggests many possible applications in forest hydrology as well as applied and basic hydrology. General principles and methods of analog computer simulation are discussed. Examples of hydrologic models are presented, including surface flood runoff, a model for vertical transport processes from the forest cover to the soil system and a program for modeling one-dimensional soil-water flow with time. The models illustrate the capability and potential of analog simulation in forest hydrology. Verification was not attempted due to insufficient input data and the difficulty of converting discrete digital input data into analog input signals. Limitations and advantages of digital and analog simulations are discussed. (Wooldridge-Wash)
NTIS Title Notes Completion rept. Jul 69-Jun 70.
PUB Date Free Form Sep 70,
Category Codes 8H; 2F; 9B; 64H; 9B
NTIS Prices PC A03 MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326514204
Origin NTIS
Type CAT