Gw-188
Enhancing data worth of EM survey in site assessment by cokriging
Parks, Kevin P.; Bentley, Laurence R.
Univ of Calgary, Calgary, Alberta, Canada
Abstract
Ground-water chemistry data from wells are cokriged with ground conductivity measurements to
quantitatively describe ground-water chemical quality at a site. The cokriged estimates are shown to
be superior to both simple rescaling of ground conductivity by a linear regression model and to
interpolation of ground-water chemistry data from wells using ordinary kriging. By extending the use
of geophysical measurements in this way, significant cost savings in site assessment can be realized
and the geophysics will have more data 'worth.' [Author abstract; 17 Refs; In English]
Index Terms: Groundwater; Chemistry; Electromagnetic field theory; Geophysics;
Surveys; Water quality; Regression analysis; Mathematical models; Interpolation; Aquifers;
Ions; Ground conductivity measurements; Groundwater chemical quality; Cokriging;
Electromagnetic survey
Ground Water: Abstract, Volume 34, Issue 4, July - August 1996 , Pages 597-604