Modeling Uncertainty in the Earth Sciences by Jef Caers (English) Paperback Book

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Modeling Uncertainty in the Earth Sciences highlights the various issues, techniques and practical modeling tools available for modeling the uncertainty of complex Earth systems and the impact that it has on practical situations. The aim of the book is to provide an introductory overview which covers a broad range of tried-and-tested tools.

FORMATPaperback LANGUAGEEnglish CONDITIONBrand New Publisher Description

Modeling Uncertainty in the Earth Sciences highlights the various issues, techniques and practical modeling tools available for modeling the uncertainty of complex Earth systems and the impact that it has on practical situations. The aim of the book is to provide an introductory overview which covers a broad range of tried-and-tested tools. Descriptions of concepts, philosophies, challenges, methodologies and workflows give the reader an understanding of the best way to make decisions under uncertainty for Earth Science problems. The book covers key issues such as: Spatial and time aspect; large complexity and dimensionality; computation power; costs of 'engineering' the Earth; uncertainty in the modeling and decision process. Focusing on reliable and practical methods this book provides an invaluable primer for the complex area of decision making with uncertainty in the Earth Sciences.

Back Cover

Modeling Uncertainty in the Earth Sciences highlights the various issues, techniques and practical modeling tools available for modeling uncertainty of complex Earth systems and the impact that it has on practical situations. The aim of the book is to provide an introductory overview which covers a broad range of tried-and-tested tools. Descriptions of concepts, philosophies, challenges, methodologies and workflows give the reader an understanding on how to make optimal decisions under uncertainty for Earth Science problems. The book covers key issues such as: Spatial and time aspect; large complexity and dimensionality; computation power; costs of 'engineering' the Earth; uncertainty in the modeling and decision process. Focusing on reliable and practical methods this book provides and invaluable primer for the complex areas of decision making with uncertainty in the Earth Sciences. First comprehensive book to present the uncertainties inherent in modeling for the Earth science community Full colour throughout Includes case study examples for greater clarity Geo-engineering focus Provides an accessible introduction to modeling uncertainty in the Earth Sciences Includes established tools as well as novel techniques developed by the author Companion website available with free software and examples Avoids complex mathematics for enhanced user-friendly approach Companion Website

Flap

Modeling Uncertainty in the Earth Sciences highlights the various issues, techniques and practical modeling tools available for modeling uncertainty of complex Earth systems and the impact that it has on practical situations. The aim of the book is to provide an introductory overview which covers a broad range of tried-and-tested tools. Descriptions of concepts, philosophies, challenges, methodologies and workflows give the reader an understanding on how to make optimal decisions under uncertainty for Earth Science problems. The book covers key issues such as: Spatial and time aspect; large complexity and dimensionality; computation power; costs of 'engineering' the Earth; uncertainty in the modeling and decision process. Focusing on reliable and practical methods this book provides and invaluable primer for the complex areas of decision making with uncertainty in the Earth Sciences. First comprehensive book to present the uncertainties inherent in modeling for the Earth science community Full colour throughout Includes case study examples for greater clarity Geo-engineering focus Provides an accessible introduction to modeling uncertainty in the Earth Sciences Includes established tools as well as novel techniques developed by the author Companion website available with free software and examples Avoids complex mathematics for enhanced user-friendly approach Companion Website

Author Biography

Jef Caers, Associate Professor of Energy Resources Engineering, Department of Energy Resources Engineering, Stanford University, Stanford, CA.

Table of Contents

Preface xi Acknowledgements xvii 1 Introduction 1 1.1 Example Application 1 1.1.1 Description 1 1.1.2 3D Modeling 3 1.2 Modeling Uncertainty 4 Further Reading 8 2 Review on Statistical Analysis and Probability Theory 9 2.1 Introduction 9 2.2 Displaying Data with Graphs 10 2.2.1 Histograms 10 2.3 Describing Data with Numbers 13 2.3.1 Measuring the Center 13 2.3.2 Measuring the Spread 14 2.3.3 Standard Deviation and Variance 14 2.3.4 Properties of the Standard Deviation 15 2.3.5 Quantiles and the QQ Plot 15 2.4 Probability 16 2.4.1 Introduction 16 2.4.2 Sample Space, Event, Outcomes 17 2.4.3 Conditional Probability 18 2.4.4 Bayes' Rule 19 2.5 Random Variables 21 2.5.1 Discrete Random Variables 21 2.5.2 Continuous Random Variables 21 2.5.2.1 Probability Density Function (pdf) 21 2.5.2.2 Cumulative Distribution Function 22 2.5.3 Expectation and Variance 23 2.5.3.1 Expectation 23 2.5.3.2 Population Variance 24 2.5.4 Examples of Distribution Functions 24 2.5.4.1 The Gaussian (Normal) Random Variable and Distribution 24 2.5.4.2 Bernoulli Random Variable 25 2.5.4.3 Uniform Random Variable 26 2.5.4.4 A Poisson Random Variable 26 2.5.4.5 The Lognormal Distribution 27 2.5.5 The Empirical Distribution Function versus the Distribution Model 28 2.5.6 Constructing a Distribution Function from Data 29 2.5.7 Monte Carlo Simulation 30 2.5.8 Data Transformations 32 2.6 Bivariate Data Analysis 33 2.6.1 Introduction 33 2.6.2 Graphical Methods: Scatter plots 33 2.6.3 Data Summary: Correlation (Coefficient) 35 2.6.3.1 Definition 35 2.6.3.2 Properties of r 37 Further Reading 37 3 Modeling Uncertainty: Concepts and Philosophies 39 3.1 What is Uncertainty? 39 3.2 Sources of Uncertainty 40 3.3 Deterministic Modeling 41 3.4 Models of Uncertainty 43 3.5 Model and Data Relationship 44 3.6 Bayesian View on Uncertainty 45 3.7 Model Verification and Falsification 48 3.8 Model Complexity 49 3.9 Talking about Uncertainty 50 3.10 Examples 51 3.10.1 Climate Modeling 51 3.10.1.1 Description 51 3.10.1.2 Creating Data Sets Using Models 51 3.10.1.3 Parameterization of Subgrid Variability 52 3.10.1.4 Model Complexity 52 3.10.2 Reservoir Modeling 52 3.10.2.1 Description 52 3.10.2.2 Creating Data Sets Using Models 53 3.10.2.3 Parameterization of Subgrid Variability 53 3.10.2.4 Model Complexity 54 Further Reading 54 4 Engineering the Earth: Making Decisions Under Uncertainty 55 4.1 Introduction 55 4.2 Making Decisions 57 4.2.1 Example Problem 57 4.2.2 The Language of Decision Making 59 4.2.3 Structuring the Decision 60 4.2.4 Modeling the Decision 61 4.2.4.1 Payoffs and Value Functions 62 4.2.4.2 Weighting 63 4.2.4.3 Trade-Offs 65 4.2.4.4 Sensitivity Analysis 67 4.3 Tools for Structuring Decision Problems 70 4.3.1 Decision Trees 70 4.3.2 Building Decision Trees 70 4.3.3 Solving Decision Trees 72 4.3.4 Sensitivity Analysis 76 Further Reading 76 5 Modeling Spatial Continuity 77 5.1 Introduction 77 5.2 The Variogram 79 5.2.1 Autocorrelation in 1D 79 5.2.2 Autocorrelation in 2D and 3D 82 5.2.3 The Variogram and Covariance Function 84 5.2.4 Variogram Analysis 86 5.2.4.1 Anisotropy 86 5.2.4.2 What is the Practical Meaning of a Variogram? 87 5.2.5 A Word on Variogram Modeling 87 5.3 The Boolean or Object Model 87 5.3.1 Motivation 87 5.3.2 Object Models 89 5.4 3D Training Image Models 90 Further Reading 92 6 Modeling Spatial Uncertainty 93 6.1 Introduction 93 6.2 Object-Based Simulation 94 6.3 Training Image Methods 96 6.3.1 Principle of Sequential Simulation 96 6.3.2 Sequential Simulation Based on Training Images 98 6.3.3 Example of a 3D Earth Model 99 6.4 Variogram-Based Methods 100 6.4.1 Introduction 100 6.4.2 Linear Estimation 101 6.4.3 Inverse Square Distance 102 6.4.4 Ordinary Kriging 103 6.4.5 The Kriging Variance 104 6.4.6 Sequential Gaussian Simulation 104 6.4.6.1 Kriging to Create a Model of Uncertainty 104 6.4.6.2 Using Kriging to Perform (Sequential) Gaussian Simulation 104 Further Reading 106 7 Constraining Spatial Models of Uncertainty with Data 107 7.1 Data Integration 107 7.2 Probability-Based Approaches 108 7.2.1 Introduction 108 7.2.2 Calibration of Information Content 109 7.2.3 Integrating Information Content 110 7.2.4 Application to Modeling Spatial Uncertainty 113 7.3 Variogram-Based Approaches 114 7.4 Inverse Modeling Approaches 116 7.4.1 Introduction 116 7.4.2 The Role of Bayes' Rule in Inverse Model Solutions 118 7.4.3 Sampling Methods 125 7.4.3.1 Rejection Sampling 125 7.4.3.2 Metropolis Sampler 128 7.4.4 Optimization Methods 130 Further Reading 131 8 Modeling Structural Uncertainty 133 8.1 Introduction 133 8.2 Data for Structural Modeling in the Subsurface 135 8.3 Modeling a Geological Surface 136 8.4 Constructing a Structural Model 138 8.4.1 Geological Constraints and Consistency 138 8.4.2 Building the Structural Model 140 8.5 Gridding the Structural Model 141 8.5.1 Stratigraphic Grids 141 8.5.2 Grid Resolution 142 8.6 Modeling Surfaces through Thicknesses 144 8.7 Modeling Structural Uncertainty 144 8.7.1 Sources of Uncertainty 146 8.7.2 Models of Structural Uncertainty 149 Further Reading 151 9 Visualizing Uncertainty 153 9.1 Introduction 153 9.2 The Concept of Distance 154 9.3 Visualizing Uncertainty 156 9.3.1 Distances, Metric Space and Multidimensional Scaling 156 9.3.2 Determining the Dimension of Projection 162 9.3.3 Kernels and Feature Space 163 9.3.4 Visualizing the Data–Model Relationship 166 Further Reading 170 10 Modeling Response Uncertainty 171 10.1 Introduction 171 10.2 Surrogate Models and Ranking 172 10.3 Experimental Design and Response Surface Analysis 173 10.3.1 Introduction 173 10.3.2 The Design of Experiments 173 10.3.3 Response Surface Designs 176 10.3.4 Simple Illustrative Example 177 10.3.5 Limitations 179 10.4 Distance Methods for Modeling Response Uncertainty 181 10.4.1 Introduction 181 10.4.2 Earth Model Selection by Clustering 182 10.4.2.1 Introduction 182 10.4.2.2 k-Means Clustering 183 10.4.2.3 Clustering of Earth Models for Response Uncertainty Evaluation 185 10.4.3 Oil Reservoir Case Study 186 10.4.4 Sensitivity Analysis 188 10.4.5 Limitations 191 Further Reading 191 11 Value of Information 193 11.1 Introduction 193 11.2 The Value of Information Problem 194 11.2.1 Introduction 194 11.2.2 Reliability versus Information Content 195 11.2.3 Summary of the VOI Methodology 196 11.2.3.1 Steps 1 and 2: VOI Decision Tree 197 11.2.3.2 Steps 3 and 4: Value of Perfect Information 198 11.2.3.3 Step 5: Value of Imperfect Information 201 11.2.4 Value of Information for Earth Modeling Problems 202 11.2.5 Earth Models 202 11.2.6 Value of Information Calculation 203 11.2.7 Example Case Study 208 11.2.7.1 Introduction 208 11.2.7.2 Earth Modeling 208 11.2.7.3 Decision Problem 209 11.2.7.4 The Possible Data Sources 210 11.2.7.5 Data Interpretation 211 Further Reading 213 12 Example Case Study 215 12.1 Introduction 215 12.1.1 General Description 215 12.1.2 Contaminant Transport 218 12.1.3 Costs Involved 218 12.2 Solution 218 12.2.1 Solving the Decision Problem 218 12.2.2 Buying More Data 219 12.2.2.1 Buying Geological Information 219 12.2.2.2 Buying Geophysical Information 221 12.3 Sensitivity Analysis 221 Index 225

Review

"This is an outstanding contribution to the current literature, particularly since this book is aimed at an audience of young researchers and modelers that may just be starting their careers." (Mathematical Geoscience, 29 November 2012) "Overall, I consider this book to be a good addition to a rather limited choice of books for teaching an introductory course on modeling uncertainty in the Earth and environmental sciences. As the author points out in the preface of the book, this is not an encyclopedia on modeling uncertainty, but rather an introduction to the topic that can lead the reader to deeper pursuits on modeling uncertainty."  (Bulletin of the American Meteorological Society, 1 October 2012)  "The book, Modeling Uncertainty in the Earth Sciences, can be of great use for anyone involved with making decisions in Earth sciences. It gives a solid overview on how decisions in Earth Science can be improved by explicit uncertainty modeling."  (Environmental Earth Science, 1 October 2012)  

Long Description

Modeling Uncertainty in the Earth Sciences highlights the various issues, techniques and practical modeling tools available for modeling uncertainty of complex Earth systems and the impact that it has on practical situations. The aim of the book is to provide an introductory overview which covers a broad range of tried-and-tested tools. Descriptions of concepts, philosophies, challenges, methodologies and workflows give the reader an understanding on how to make optimal decisions under uncertainty for Earth Science problems. The book covers key issues such as: Spatial and time aspect; large complexity and dimensionality; computation power; costs of 'engineering' the Earth; uncertainty in the modeling and decision process. Focusing on reliable and practical methods this book provides and invaluable primer for the complex areas of decision making with uncertainty in the Earth Sciences. First comprehensive book to present the uncertainties inherent in modeling for the Earth science community Full colour throughout Includes case study examples for greater clarity Geo-engineering focus Provides an accessible introduction to modeling uncertainty in the Earth Sciences Includes established tools as well as novel techniques developed by the author Companion website available with free software and examples Avoids complex mathematics for enhanced user-friendly approach Companion Website

Review Text

?This is an outstanding contribution to the current literature, particularly since this book is aimed at an audience of young researchers and modelers that may just be starting their careers.? (Mathematical Geoscience, 29 November 2012) ?Overall, I consider this book to be a good addition to a rather limited choice of books for teaching an introductory course on modeling uncertainty in the Earth and environmental sciences. As the author points out in the preface of the book, this is not an encyclopedia on modeling uncertainty, but rather an introduction to the topic that can lead the reader to deeper pursuits on modeling uncertainty.?  (Bulletin of the American Meteorological Society, 1 October 2012)  ?The book, Modeling Uncertainty in the Earth Sciences, can be of great use for anyone involved with making decisions in Earth sciences. It gives a solid overview on how decisions in Earth Science can be improved by explicit uncertainty modeling.?  (Environmental Earth Science, 1 October 2012)  

Review Quote

"This is an outstanding contribution to the current literature, particularly since this book is aimed at an audience of young researchers and modelers that may just be starting their careers." ( Mathematical Geoscience , 29 November 2012) "Overall, I consider this book to be a good addition to a rather limited choice of books for teaching an introductory course on modeling uncertainty in the Earth and environmental sciences. As the author points out in the preface of the book, this is not an encyclopedia on modeling uncertainty, but rather an introduction to the topic that can lead the reader to deeper pursuits on modeling uncertainty." ( Bulletin of the American Meteorological Society , 1 October 2012) "The book, Modeling Uncertainty in the Earth Sciences, can be of great use for anyone involved with making decisions in Earth sciences. It gives a solid overview on how decisions in Earth Science can be improved by explicit uncertainty modeling." ( Environmental Earth Science , 1 October 2012)

Details ISBN1119992621 Year 2011 ISBN-10 1119992621 ISBN-13 9781119992622 Format Paperback Country of Publication United States DEWEY 550 Media Book Language English Illustrations Yes Edition 1st Pages 248 Short Title MODELING UNCERTAINTY IN THE EA UK Release Date 2011-06-24 Publisher John Wiley & Sons Inc Imprint John Wiley & Sons Inc Place of Publication New York AU Release Date 2011-06-27 NZ Release Date 2011-06-27 Author Jef Caers Publication Date 2011-06-24 Alternative 9781119992639 Audience Professional & Vocational US Release Date 2011-06-24 We've got this

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