Full Record Display for the EPA National Library Catalog

RECORD NUMBER: 2084 OF 2085

OLS Field Name OLS Field Data
Main Title Worth of Data Used in Digital-Computer Models of Ground-Water Basins.
Author Gate, Joseph Spencer ;
CORP Author Arizona Univ., Tucson. Dept. of Hydrology and Water Resources.
Year Published 1972
Report Number TR-8; DI-14-01-0001-1876 ;DI-14-31-0001-3708; OWRR-B-007-ARIZ ;OWRR-A-010-ARIZ; 04975,; B-007-ARIZ(26)
Stock Number PB-228 854
Additional Subjects Ground water ; Hydrogeology ; Digital simulation ; Computer programs ; Evaluation ; Data ; Tucson basin ; Arizona ; Bayes theorem ; Statistical decision theory ; Errors ; Predictions ; Theses ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB-228 854 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 239p
Abstract The worth of additional data to a digital model of the Tucson basin, Arizona was computed using a basic form of statistical decision theory (Bayesian). The model variables for which additional data were hypothesized included the aquifer coefficients of storage and transmissivity, initial water levels, discharge, and recharge. The worth of data was evaluated in terms of the expected reduction in error in predicted water levels associated with collection of more data on one variable at one point in the model. A limited number of tests suggested that the Tucson basin model could be improved most by obtaining more data on discharge and recharge in areas where these variables were large, and by obtaining more data on transmissivity where it was uncertain.
NTIS Title Notes Technical rept..
PUB Date Free Form Jun 72,
Category Codes 13B; 48B
NTIS Prices PC A11/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326578403
Origin NTIS
Type CAT