Record Display for the EPA National Library Catalog

RECORD NUMBER: 59 OF 1477

OLS Field Name OLS Field Data
Main Title Geostatistical Strategy for Soil Sampling: The Survey and the Census.
Author Flatman, G. T. ; Yfantis, A. A. ;
CORP Author Environmental Monitoring Systems Lab., Las Vegas, NV. ;Nevada Univ., Las Vegas.
Year Published 1984
Report Number EPA/600/J-84/284;
Stock Number PB85-196517
Additional Subjects Soil surveys ; Water pollution ; Sampling ; Experimental design ; Trace elements ; Statistics ; Standard deviation ; Reprints ; Isomap
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB85-196517 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 17p
Abstract
This article develops a soil sampling strategy for spatially correlated variables using the tools of geostatistical analysis. With a minimum of equations, the logic of geostatistical analysis is traced from the modeling of a semi-variogram to the output isomaps of pollution estimates and their standard deviations. These algorithms provide a method to balance precision, accuracy, and costs. Their axiomatic assumptions dictate a two-stage sampling strategy. The first stage is a sampling survey using a radial grid to collect enough data to define, by a semi-variogram, the ranges of influence and the orientation of the correlation structure of the pollutant plume. The second stage is a census of the suspected area with grid shape, sizes and orientation dictated by the semi-variogram. The subsequent kriging analysis of this data gives isopleth maps of the pollution field and the standard error isomap of this contouring. (Copyright (c) 1984 by D. Reidel Publishing Company.)