geoENV I — Geostatistics for Environmental Applications Proceedings of the Geostatistics for Environmental Applications Workshop, Lisbon, Portugal, 18–19 November 1996

GeoENV96, the First European Conference on Geostatistics for Environmental Applications held in Lisbon, was conceived to bring together researchers, mostly from, but not limited to Europe, working on environmental issues approached by geostatistical methods. Papers were attracted from fields as diverse as hydrogeology. biology, soil sciences, air pollution or ecology. It is clear that there is a lot of activity on geostatistics for environmental applications as the collection of papers in this book reveals. GeoENV96 was successful in the number and quality of the papers presented which surpassed the initial expectations. There is still a large dispersion on the level of application of geostatistics in the different areas. To help in spreading the most novel applications of geostatistics across disciplines and to discuss the specific problems related to the application of geostatistics to environmental applications, geoENV96 is intended to set the pace and to be the first of a series of biennial meetings. The pace is set, now let us wait for geoENV98. Lisbon, November 1996 The Executive Committee: Jaime Gomez-Hernandez Roland Froidevaux Amflcar Soares TABLE OF CONTENTS Foreword .................................................. Vll Hydrology, Groundwater, Groundwater Contaminantion Equivalent Transmissivities in Heterogeneous Porous Media under Radially Convergent Flow X. Sanchez-Vila, c.L. Axness and J. Carrera .......................... .

Equivalent Transmissivities in Heterogeneous Porous Media under Radially Convergent Flow.- Inverse Modelling of Groundwater Flow Incorporating Parameter, Boundary and Initial Conditions and Model Error Uncertainty.- Geostatistical Analysis of Fractured Rock Characteristics.- On the Application of Stochastic Inverse Modelling to the Fractured Semi-Confined Aquifer of Bagueixe, Portugal.- Solute Transport in Single and Multiple Scale Heterogeneous Formations: Numerical Experiments.- Numerical Aspects of the Universal Kriging Method for Hydrological Applications.- The use of Conservative Mass Transport Analysis as a Quick Look Tool to Rank Geostatistical Realizations of Heterogeneous Structures.- Simplified Renormalization: A New Quick Upscaling Technique.- Impact of Random Function Choice on Groundwater Mass Transport Modelling.- Mapping Spatial and Temporal Variation of Groundwater Quality in the Netherlands.- A Model of Aquifer Heterogeneity.- Geostatistical Study of Nitrate Contents in the Aquifers of Campo de Dalias (SE Spain).- Evaluation of Reactive Transport Processes in a Heterogeneous Porous Aquifer within a Non-Parametric Numerical Stochastic Transport Modelling Framework based on Sequential Indicator Simulation of Categorical Variables.- Parameter Estimation for Groundwater Models by Indicator Kriging.- Numerical Characterization of Contaminant Transport in Nested Two-Scale Porous Media.- Interpolation of Groundwater Quality Parameters using Additional Information.- A Neural Network Aided Filtering Algorithm for Diagnosing and Predicting Nonlinear Contaminant Transport Dynamics.- Hydrological Modelling of Distributed Rainfall/Runoff in the Watershed of Guadiana.- Spatial Correlations of Hydrochemical Parameters.- Seasonal Variations on Systems of Triple Influence. The Importance of Silicate Weathering, Soil Fertilization and Domestic Effluents to the Composition of Stream Water as Determined by Correspondence Analysis.- Kriging vs Stochastic Simulation for Risk Analysis in Soil Contamination.- A Framework for Optimization of Soil Sampling Strategy and Soil Remediation Scenario Decisions using Moving Window Kriging.- Analysis of Solute Redistribution in Heterogeneous Soil: I. Geostatistical Approach to Describe the Spatial Scaling Factors.- Analysis of Solute Redistribution in Heterogeneous Soil: II. Numerical Simulation of Solute Transport.- Simulating Locational Error in Field-Based Measurements of Reflectance.- Application of Geostatistics to 3D Modelling of Contaminated Sites: A Case Study.- Mapping Cadmium Concentration and the Risk of Exceeding a Local Sanitation Threshold using Indicator Geostatistics.- Geostatistical Methods Applied to Characterization of the Heterogeneity of the Migmatite Formation at Olkiluoto, Western Finland.- Spatial Simulated Annealing for Optimizing Sampling. Different Optimization Criteria Compared.- Improved Rainfall Estimation by Integration of Radar Data: A Geostatistical Approach.- Stochastic Simulation of Lichen Biodiversity using Soft Information from Remote Sensing Data.- Chernobyl Fallout: Review of Advanced Spatial Data Analysis.- Space-Time Analysis of Air Pollution in Lisbon.- Habitat Evaluation using Logistic Regression.- Geostatistical Modeling of Species Distributions. Implications for Ecological and Biogeographical Studies.- Global Warming and the Weights of Rats: Uses of the Variogram in the Analysis of Longitudinal Data.- Variographic Refinement of North Sea Herring Acoustic Survey Data.- Applying Geostatistics to Exposure Monitoring Data in Industrial Hygiene.- Conditional Simulation and Estimation of Gauss-Markov Random Fields using the Bayesian Nearest Neighbor Method.- Clustering of Spatial Data by the EM Algorithm.