ALBERT

Note: Table of Contents 1 Introduction 1.1 Scripting versus Traditional Programming 1.1.1 Why Scripting is Useful in Computational Science 1.1.2 Classification of Programming Languages 1.1.3 Productive Pairs of Programming Languages 1.1.4 Gluing Existing Applications 1.1.5 Scripting Yields Shorter Code 1.1.6 Efficiency 1.1.7 Type-Specification (Declaration) of Variables 1.1.8 Flexible Function Interfaces 1.1.9 Interactive Computing 1.1.10 Creating Code at Run Time 1.1.11 Nested Heterogeneous Data Structures 1.1.12 GUI Programming 1.1.13 Mixed Language Programming 1.1.14 When to Choose a Dynamically Typed Language 1.1.15 Why Python? 1.1.16 Script or Program? 1.2 Preparations for Working with This Book 2 Getting Started with Python Scripting 2.1 A Scientific Hello World Script 2.1.1 Executing Python Scripts 2.1.2 Dissection of the Scientific Hello World Script 2.2 Working with Files and Data 2.2.1 Problem Specification 2.2.2 The Complete Code 2.2.3 Dissection 2.2.4 Working with Files in Memory 2.2.5 Array Computing 2.2.6 Interactive Computing and Debugging 2. 2.7 Efficiency Measurements 2.2.8 Exercises 2.3 Gluing Stand-Alone Applications 2.3.1 The Simulation Code 2.3.2 Using Gnuplot to Visualize Curves 2.3.3 Functionality of the Script 2.3.4 The Complete Code 2.3.5 Dissection 2.3.6 Exercises 2.4 Conducting Numerical Experiments 2.4.1 Wrapping a Loop Around Another Script 2.4.2 Generating an HTML Report 2.4.3 Making Animations 2.4.4 Varying Any Parameter 2.5 File Format Conversion 2.5.1 A Simple Read/Write Script 2.5.2 Storing Data in Dictionaries and Lists 2.5.3 Making a Module with Functions 2.5.4 Exercises 3 Basic Python 3.1 Introductory Topics 3.1.1 Recommended Python Documentation 3.1.2 Control Statements 3.1.3 Running Applications 3.1.4 File Reading and Writing 3.1.5 Output Formatting 3.2 Variables of Different Types 3.2.1 Boolean Types 3.2.2 The None Variable 3.2.3 Numbers and Numerical Expressions 3.2.4 Lists and Tuples 3.2.5 Dictionaries 3.2.6 Splitting and Joining Text 3.2.7 String Operations 3.2.8 Text Processing 3.2.9 The Basics of a Python Class 3.2.10 Copy and Assignment 3.2.11 Determining a Variable's Type 3.2.12 Exercises 3.3 Functions 3.3.1 Keyword Arguments 3.3.2 Doc Strings 3.3.3 Variable Number of Arguments 3.3.4 Call by Reference 3.3.5 Treatment of Input and Output Arguments 3.3.6 Function Objects 3.4 Working with Files and Directories 3.4.1 Listing Files in a Directory 3.4.2 Testing File Types 3.4.3 Removing Files and Directories 3.4.4 Copying and Renaming Files 3.4.5 Splitting Pathnames 3.4.6 Creating and Moving to Directories 3.4.7 Traversing Directory Trees 3.4.8 Exercises 4 Numerical Computing in Python 4.1 A Quick NumPy Primer 4.1.1 Creating Arrays 4.1.2 Array Indexing 4.1.3 Loops over Arrays 4.1.4 Array Computations 4.1.5 More Array Functionality 4.1.6 Type Testing 4.1.7 Matrix Objects 4.1.8 Exercises 4.2 Vectorized Algorithms 4.2.1 From Scalar to Array in Function Arguments 4.2.2 Slicing 4.2.3 Exercises 4.3 More Advanced Array Computing 4.3.1 Random Numbers 4.3.2 Linear Algebra 4.3.3 Plotting 4.3.4 Example: Curve Fitting 4.3.5 Arrays on Structured Grids 4.3.6 File I/O with NumPy Arrays 4.3.7 Functionality in the Numpyutils Module 4.3.8 Exercises 4.4 Other Tools for Numerical Computations 4.4.1 The ScientificPython Package 4.4.2 The SciPy Package 4.4.3 The Python- Matlab Interface 3 4.4.4 Symbolic Computing in Python 4.4.5 Some Useful Python Modules 5 Combining Python with Fortran, C, and C++ 5.1 About Mixed Language Programming 5.1.1 Applications of Mixed Language Programming 5.1.2 Calling C from Python 5.1.3 Automatic Generation of Wrapper Code 5.2 Scientific Hello World Examples 5.2.1 Combining Python and Fortran 5.2.2 Combining Python and C 5.2.3 Combining Python and C++ Functions 5.2.4 Combining Python and C++ Classes 5.2.5 Exercises 5.3 A Simple Computational Steering Example 5.3.1 Modified Time Loop for Repeated Simulations 5.3.2 Creating a P ython Interface 5.3.3 The Steering Python Script 5.3.4 Equipping the Steering Script with a GUI 5.4 Scripting Interfaces to Large Libraries 6 Introduction to GUI Programming 6.1 Scientific Hello World GUI 6.1.1 Introductory Topics 6.1.2 The First Python/Tkinter Encounter 6.1.3 Binding Events 6.1.4 Changing the Layout 6.1.5 The Final Scientific Hello World GUI 6.1.6 An Alternative to Tkinter Variables 6.1.7 About the Pack Command 6.1.8 An Introduction to the Grid Geometry Manager 6.1.9 Implementing a GUI as a Class 6.1.10 A Simple Graphical Function Evaluator 6.1.11 Exercises 6.2 Adding GUis to Scripts 6.2.1 A Simulation and Visualization Script with a GUI 6.2.2 Improving the Layout 6.2.3 Exercises 6.3 A List of Common Widget Operations 6.3.1 Frame 6.3.2 Label 6.3.3 Button 6.3.4 Text Entry 6.3.5 Balloon Help 6.3.6 Option Menu 6.3.7 Slider 6.3.8 Check Button 6.3.9 Making a Simple Megawidget 6.3.10 Menu Bar 6.3.11 List Data 6.3.12 Listbox 6.3.13 Radio Button 6.3.14 Combo Box 6.3.15 Message Box 6.3.16 User-Defined Dialogs 6.3.17 Color-Picker Dialogs 6.3.18 File Selection Dialogs 6.3.19 Toplevel 6.3.20 Some Other Types of Widgets 6.3.21 Adapting Widgets to the User's Resize Actions 6.3.22 Customizing Fonts and Colors 6.3.23 Widget Overview 6.3.24 Exercises 7 Web Interfaces and CGI Programming 7.1 Introductory CGI Scripts 7.1.1 Web Forms and CGI Scripts 7.1.2 Generating Forms in CGI Scripts 7.1.3 Debugging CGI Scripts 7.1.4 A General Shell Script Wrapper for CGI Scripts 7.1.5 Security Issues 7.2 Adding Web Interfaces to Scripts 7.2.1 A Class for Form Parameters 7.2.2 Calling Other Programs 7.2.3 Running Simulations 7.2.4 Getting a CGI Script to Work 7.2.5 Using Web Applications from Scripts 7.2.6 Exercises 8 Advanced Python 8.1 Miscellaneous Topics 8.1.1 Parsing Command-Line Arguments 8.1.2 Platform-Dependent Operations 8.1.3 Run-Time Generation of Code 8.1.4 Exercises 8.2 Regular Expressions and Text Processing 8.2.1 Motivation 8.2.2 Special Characters 8.2.3 Regular Expressions for Real Numbers 8.2.4 Using Groups to Extract Parts of a Text 8.2.5 Extracting Interval Limits 8.2.6 Extracting Multiple Matches 8.2.7 Splitting Text 8.2.8 Pattern-Matching Modifiers 8.2.9 Substitution and Backreferences 8.2.10 Example: Swapping Arguments in Function Calls 8.2.11 A General Substitution Script 8.2.12 Debugging Regular Expressions 8.2.13 Exercises 8.3 Tools for Handling Data in Files 8.3.1 Writing and Reading Python Data Structures 8.3.2 Pickling Objects 8.3.3 Shelving Objects 8.3.4 Writing and Reading Zip and Tar Archive Files 8.3.5 Downloading Internet Files 8.3.6 Binary Input/Output 8.3.7 Exercises 8.4 A Database for NumPy Arrays 8.4.1 The Structure of the Database 8.4.2 Pickling 8.4.3 Formatted ASCII Storage 8.4.4 Shelving 8.4.5 Comparing the Various Techniques 8.5 Scripts Involving Local and Remote Hosts 8.5.1 Secure Shell Commands 8.5.2 Distributed Simulation and Visualization 8.5.3 Client/Server Programming 8.5.4 Threads 8.6 Classes 8.6.1 Class Programming 8.6.2 Checking the Class Type 8.6.3 Private Data 8.6.4 Static Data 8.6.5 Special Attributes 8.6.6 Special Methods 8.6.7 Multiple Inheritance 8.6.8 Using a Class as a C-like Structure 8.6.9 Attribute Access via String Names 8.6.10 New-Style Classes 8.6.11 Implementing Get/Set Functions via Properties 8.6.12 Subclassing Built-in Types 8.6.13 Building Class Interfaces at Run Time 8.6.14 Building Flexible Class Interfaces 8.6.15 Exercises 8.7 Scope of Variables 8.7.1 Global, Local, and Class Variables 8.7.2 Nested Functions 8.7.3 Dictionaries of Variables in Namespaces 8.8 Exceptions 8.8.1 Handling Exceptions 8.8.2 Raising Exceptions 8.9 Iterators 8.9.1 Constructing an Iterator 8.9.2 A Pointwise Grid Iterator 8.9.3 A Vectorized Grid Iterator 8.9.4 Generators 8.

Note: Introduction 1 Definitions 2 Historical Development of the Term Rockglacier 3 Rockglaciers: Description and Morphometry 3.1 General Description 3.2 Form Types 3.3 Morphometric Parameters 3.3.1 Rockglacier Sizes 3.3.2 Tongue-Shaped Rockg1aciers 3.3.3 Lobate Rockg1aciers 3.3.4 Rockglacier Thickness 3.3.5 Surface Relief 3.3.6 Rockglacier Surface and Source Area 4 Rockglacier Taxonomy 5 Rockglacier Distribution 5.1 General Information 5.2 Local Rockglacier Distribution 5.2.1 The Alps 5.2.2 The Mountains of Northern Europe 5.2.3 The Pyrenees 5.2.4 North American Mountains 5.2.5 The Andes of Central and South America 5.2.6 The Mountains of Asia 5.2.7 The Southern Alps 5.2.8 Antarctic Mountains 5.2.9 Conclusions 6 Rockglacier Material, Surficial Fabric and Internal Structure 6.1 Rock Type and Grain Size at and below the Surface 6.1.1 Rock Type 6.1.2 Grain Sizes at the Surface 6.1.3 Development of the Bouldery Mantle 6.1.4 Surface Fabric 6.1.5 Grain Sizes below the Bouldery Mantle 6.2 Internal Structure 6.2.1 Direct Information 6.2.1.1 Excavations, Outcrops, Tunnels 6.2.1.2 Smaller Boreholes 6.2.1.3 The Deep Borehole through the Rockglacier Murtel I 6.2.2 Indirect Information 6.2.2.1 Seismic Information 6.2.2.2 Geoelectric Soundings 6.2.2.3 Radio-Echo Soundings 6.2.2.4 Gravimetry 6.2.2.5 Borehole Geophysics and Related Measurements 6.2.2.6 BTS Measurements 6.2.2.7 Summary: The Inner Core of an Active Rockglacier 6.3 The Active Layer on Rockglaciers 7 Rockglacier Movement, Velocity, and Rheology 7.1 The Horizontal and Vertical Movement of Active Rockglaciers 7.1.1 Measurement Methods 7.1.2 Annual Horizontal Displacement 7.1.3 Long-Term Annual Averages 7.1.4 Long-Term Estimates 7.1.5 Longer Time Series 7.1.6 Monthly and Seasonal Measurements 7.1.7 Vertical Displacement 7.1.8 Conclusion 7.2 Geometry of Movement 7.2.1 The General Flow Patterns of Active Rockglaciers 7.2.1.1 Gruben Rockglacier 7.2.1.2 Macun Rockglacier 7.2.1.3 Arapaho Rockglacier 7.2.2 Horizontal Velocity on Longitudinal and Cross-Sectional Profiles 7.2.3 Surface and Subsurface Velocity 7.3 Rheologic Considerations 7.3.1 Shear Stress and Strain Rates in Active Rockglaciers 7.3.2 The Rheological Description of Active Rockglaciers 7.4 Rockglacier Movement and Climate 7.5 Discussion of Rockglacier Movement 8 Rockglacier Genesis and the Relation to Similar-Looking Landforms 8.1 Rockglacier Genesis 8.1.1 The Formation of Active Rockglaciers 8.1.1.1 Talus Rockglaciers 8.1.1.2 Debris Rockglaciers 8.1.1.3 Special Rockglaciers 8.1.1.4 Problematic Cases 8.1.2 Inactive Rockglaciers 8.1.3 Relict (Fossil) Rockglaciers 8.2 Published Hypotheses of Rockglacier Formation 8.2.1 Mass-Movement Hypotheses 8.2.1.1 The Bergsturz Hypothesis in General 8.2.1.2 Landslide Influences 8.2.2 The Glacial Hypothesis 8.2.2.1 Debris-Covered Glaciers and Thermokarst 8.2.2.2 Transition from True Glaciers to Rockglaciers? 8.2.2.3 The Moraine Hypothesis 8.2.3 The Periglacial (Blockstream) Hypothesis 8.3 True Rockglaciers under Wrong Labels 8.3.1 The Ostrem Ice-Cored Moraine Concept 8.3.2 The Protalus Rampart Concept 9 The Age of Rockglaciers 9.1 The Age of Active Rockglaciers 9.2 The Age of Climatic Inactive Rockglaciers 9.3 The Age of Relict (Fossil) Rockglaciers 10 Rockglaciers and the High Mountain Environment 10.1 Active Rockglaciers and Mountain Permafrost 10.2 Rockglaciers in the Coarse Debris Cycle 10.2.1 Rockglaciers and Talus Production 10.2.2 Rockglacier Size and Source Area 10.2.3 Rockglaciers as a Debris Transport System 10.3 Rockglaciers and Climate 10.3.1 Rockglaciers and Present Climate 10.3.2 Relict Rockglaciers and Paleoclimate Reconstruction 10.3.3 Reactivation of Inactive or Relict Rockglaciers 10.3.4 Rockglaciers and Climatic Change 10.4 Rockglaciers in the Alpine Hydrological Cycle 10.4.1 Rockglaciers as a Water Store 10.4.2 Discharge from Rockglacier Permafrost 10.4.3 Fluctuations in Rockglacier Permafrost Storage 10.5 Rockglaciers as Hazards in Alpine Environments 10.6 The Environment of Active Rockglaciers 11 Summary and Outstanding Problems 12 References Index of Place Names Subject Index