kriging

One is thus making a distinction between the experimental variogram that is a visualisation of a possible spatial/temporal correlation and the variogram model that is further used to define the weights of the kriging function.

More ISO-2000 Weather Stations from Jones and Hansen « Climate Audit 2007

As such, it may not be positive definite and hence not directly usable in kriging, without constraints or further processing.

More ISO-2000 Weather Stations from Jones and Hansen « Climate Audit 2007

Mind you, the scale of interpolation or kriging of the correlation surface matters.

The Juckes Proxies « Climate Audit 2006

The problem is that a pair of measured values, determined in samples selected at positions with different coordinates, defines an infinite set of distance-weighted averages AKA kriged estimates, a zero pseudo kriging variance, and zip degrees of freedom.

Consensus – Two Examples « Climate Audit 2005

Grade for copper and gold was estimated by ordinary kriging interpolation methods from 6 m uncapped composites of diamond drill core samples.

unknown title 2011

Quantile-quantile plots comparing resource block and capped composite data show the usual smoothing effect of kriging particularly at higher grades, but confirm that the block model is representative of the informing data.

unknown title 2011

Higher grade zones were estimated using ordinary kriging OK with maximum search distances of 10 meters with an average of 7 meters.

unknown title 2011

The Onek resources were estimated in multiple passes in 3 by 5 by 10 meter blocks by ordinary kriging.

unknown title 2011

The mineral resources were estimated using the ordinary kriging method.

Brigus Gold Completes an Updated Black Fox Mine Technical Report and Provides an Update on Black Fox Mine Operations - Yahoo! Finance 2011

Block gold grade was estimated by ordinary kriging from sourced capped composite data.

unknown title 2011