M.J. Abedini wrote:
Another issue regarding detrending concerns with variogram modeling when trend coefficients are not given (i.e., unknown). I found literature on this issue very disparate. Any comments regarding unified approach on variogram modeling will be greatly appreciated.
This is not a unified approach, but considering Sebastiano Trevisani's suggestion of using topography as an external drift variable for kriging hydraulic head, the residual is simply depth to water from the land surface. Depth to water is typically available (or easily derivable from the DEM and head data) and the residual variogram could be modeled directly from depth to water.
-- Bob Harrington, Hydrologist Inyo County Water Department 163 May St. Bishop, CA 93514 (760) 872-1168 [EMAIL PROTECTED] + + To post a message to the list, send it to [email protected] + To unsubscribe, send email to majordomo@ jrc.it with no subject and "unsubscribe ai-geostats" in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list + As a general service to list users, please remember to post a summary of any useful responses to your questions. + Support to the forum can be found at http://www.ai-geostats.org/
