| Abstract: | This paper emphasizes the supportive role of geostatistics in applying ground-water models. Field data of 1994 ground-water level, bedrock, and saltwater-freshwater interface elevations in south-central Kansas were collected and analyzed using the geostatistical approach. Ordinary kriging was adopted to estimate initial conditions for ground-water levels and topography of the Permian bedrock at the nodes of a finite difference grid used in a three-dimensional numerical model. Cokriging was used to estimate initial conditions for the saltwater-freshwater interface. An assessment of uncertainties in the estimated data is presented. The kriged and cokriged estimation variances were analyzed to evaluate the adequacy of data employed in the modeling. Although water levels and bedrock elevations are well described by spherical semivariogram models, additional data are required for better cokriging estimation of the interface data. The geostatistically analyzed data were employed in a numerical model of the Siefkes site in the project area. Results indicate that the computed chloride concentrations and ground-water drawdowns reproduced the observed data satisfactorily.This paper emphasizes the supportive role of geostatistics in applying ground-water models. Field data of 1994 ground-water level, bedrock, and saltwater-freshwater interface elevations in south-central Kansas were collected and analyzed using the geostatistical approach. Ordinary kriging was adopted to estimate initial conditions for ground-water levels and topography of the Permian bedrock at the nodes of a finite difference grid used in a three-dimensional numerical model. Cokriging was used to estimate initial conditions for the saltwater-freshwater interface. An assessment of uncertainties in the estimated data is presented. The kriged and cokriged estimation variances were analyzed to evaluate the adequacy of data employed in the modeling. Although water levels and bedrock elevations are well described by spherical semivariogram models, additional data are required for better cokriging estimation of the interface data. The geostatistically analyzed data were employed in a numerical model of the Siefkes site in the project area. Results indicate that the computed chloride concentrations and ground-water drawdowns reproduced the observed data satisfactorily. |
| Genre: | Article |
| ProdID: | 70021992 |
| Citation Author: | Ma, T. -S.; Sophocleous, M.; Yu, Y. -S. |
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| Citation End Page: | 64 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Hydrologic Engineering |
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| Citation Number Of Pages: | 8 |
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| Citation Publisher: | ASCE |
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| Citation Search Results Text: | Geostatistical applications in ground-water modeling in south-central Kansas; 1999; Article; Journal; Journal of Hydrologic Engineering; Ma, T. -S.; Sophocleous, M.; Yu, Y. -S. |
| Citation Start Page: | 57 |
| Citation Volume: | 4 |
| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | Geostatistical applications in ground-water modeling in south-central Kansas; 1999; Article; Journal; Journal of Hydrologic Engineering; Ma, T. -S.; Sophocleous, M.; Yu, Y. -S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1061/(ASCE)1084-0699(1999)4:1(57) |
| Date Other: | Fri, 1 Jan 1999 00:00 -0600 |
| Publisher: | ASCE |
