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Heterogeneity and non-stationary variance in hard rock hydrogeology Extreme variability and its role in hydrogeology Land and Water Resources Engineering.

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Presentation on theme: "Heterogeneity and non-stationary variance in hard rock hydrogeology Extreme variability and its role in hydrogeology Land and Water Resources Engineering."— Presentation transcript:

1 Heterogeneity and non-stationary variance in hard rock hydrogeology Extreme variability and its role in hydrogeology Land and Water Resources Engineering Robert Earon

2 Changing Climate Limited Storage Increasing residency near coast Heteroscedasticity There is no annual shortage of water in Sweden. Problems arise due to temporal distribution of meteoric water and water storage. Glacial Till Hard Rock IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

3 Heterogeneity Range IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks Nugget Sill

4 Spatial Anisotropy IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

5 Spatial Anisotropy IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

6 Spatial Anisotropy IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

7 Heterogeneity in spatial variance IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

8 ANOVA, t-test both indicate samples significantly (sig.<0.000) different IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

9 Heterogeneity in spatial variance Area Median Distance (m)nMeanMedianVarianceSkewnessKurtosis North1802102641.040.393.183.9223.43 South1930141691.450.535.463.3315.32 IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

10 Multivariate Approach to Groundwater Resources IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

11 Multivariate Approach to Groundwater Resources IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

12 Review Heterogeneity places a high burden on point estimates for regional or even local characterization Heterogenic, anisotropic variability implies caution should be taken when applying statistical tools From the standpoint of limited-resource hydrogeological investigation, plausibility of applying and developing other tools IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

13 IntroductionPossibilitiesHeterogeneityAnistropyConcluding Remarks

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