||Properties of Designs for Sampling Continuous Spatial Resources from a Triangular Grid.
Overton, W. S. ;
Stehman, S. V. ;
||Oregon State Univ., Corvallis. Dept. of Statistics. ;State Univ. of New York Coll. of Environmental Science and Forestry, Syracuse.;Corvallis Environmental Research Lab., OR.
Continuous sampling ;
Environmental monitoring ;
US EPA ;
Spatial distribution ;
Grid generation(Mathematics) ;
Computational grids ;
Performance evaluation ;
Environmental Monitoring and Assessment Program
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Precision of systematic designs for sampling continuous response variables defined over a continuous spatial region have been extensively investigated. Estimation of variance, particularly for triangular grids, has been given less attention. Two of the designs proposed for sampling environmental resources in the Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP) are based on a triangular grid. Implementation of either design requires derivation and evaluation of a variance estimator adequate for the purposes of EMAP. The performance of the proposed variance estimator was assessed under various surface model representations of the continuous response variable. Of the designs examined, a tessellation-stratified design permitted better estimation of variance, and was generally more precise, than a strict systematic design. (Copyright (c) 1993 by Marcel Dekker, Inc.)
||Pub. in Communications Statistics, Theory and Methods, v22 n9 p2641-2660 1993. Prepared in cooperation with State Univ. of New York Coll. of Environmental Science and Forestry, Syracuse. Sponsored by Corvallis Environmental Research Lab., OR.
|NTIS Title Notes
||Reprint: Properties of Designs for Sampling Continuous Spatial Resources from a Triangular Grid.
||PC A03/MF A01