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  • 1
    Call number: AWI G5-10-0074 ; M 11.0047
    In: Developments in paleoenvironmental research
    Description / Table of Contents: Chapter 1: High-resolution Paleoclimatology - R. Bradley What is high-resolution paleoclimatology? What are its major achievements? What opportunities and challenges does it now face? What should dendroclimatology's role be in this? Chapter 2: Dendroclimatology in high-resolution Paleoclimatology - M. K. Hughes, H. F. Diaz and Th. W. Swetnam An overview of the development of dendroclimatology and an introduction to the questions posed in this book. Scientific bases of dendroclimatology Chapter 3: How well understood are the processes that create tree-ring records? - G. Vaganov Starting at the most basic level of the environmental control of tree-ring formation, do we have the necessary biological and ecophysiological understanding of this to support inferences about climate variability from tree rings? What are the weak points of this understanding and how might they be strengthened? Chapter 4: The state of the art of quantitative methods in dendroclimatology - E. Cook How sound are the quantitative techniques commonly used in dendroclimatology, in chronology building, identification and reconstruction of climate variables and the checking of these reconstructions? Are they appropriate to the material being analyzed and to the climatological problems being addressed? How might they be improved? Chapter 5: Detecting low-frequency change using tree rings - K. Briffa What limits the ability of tree-ring records to faithfully record climate variability at low frequencies (multi-centennial to millennial)? How might those limitations be overcome, if at all? What are the advantages and limitations of older and more novel approaches? What are the implications of these limitations? Reconstruction of climate patterns and values relative to today's climate Chapter 6: Dendroclimatology at regional and continental scales - R. Villalba What have been the major contributions of dendroclimatology to climatology so far? In what regions and for which climate problems is exciting progress now being made? What next? Chapter 7: Dendroclimatology at hemispheric and global scales - M. K. Hughes and M. Mann What are the achievements of dendroclimatology as applied at hemispheric and global scales climate patterns, circulation indices and large-scale means? What are the limitations of this approach? How might they be overcome? How might dendroclimatology contribute to the study of central pressing problems such as "How big is climate sensitivity? How has the last century, and especially recent decades, compared with earlier centuries? How faithful a representation of variability in recent centuries does the 20th century instrumental record give? Particular attention will be given to: a) identifying the most robust findings; and b) the most serious limitations. Chapter 8: Dendroclimatology, dendrohydrology and water resources management - C. Woodhouse and D. Meko How may dendroclimatology contribute to the study of water resources? How may it be used to inform modern public and decision-maker expectations of climate variability? Chapter 9: Dendroclimatology and the ecosystem impacts of climate - Th. W. SwetnamHow has dendroclimatology contributed to disturbance ecology? What is the significance of the recent changes in tree-growth-climate relationships observed in some regions, not only for dendroclimatology, but also for the understanding of the impacts of climate variability and change on ecosystems? Chapter 10: Dendroclimatology and the understanding of the interactions between climate variability and ancient human societies - D. Stahle and J. DeanHow has dendroclimatology contributed to understanding of the relationships between climate variability and societies in ancient times? Chapter 11: Tree rings and climate- sharpening the focus - M. K. Hughes, H. F. Diaz and Th. W. Swetnam What has been learned, using tree rings, about natural climate variability and its environmental and social impacts? What are the most significant strengths and weaknesses of dendroclimatology and the needs of, and opportunities for, future work.
    Description / Table of Contents: This volume presents an overview of the current state of dendroclimatology, its contributions over the last 30 years, and its future potential. The material included is useful not only to those who generate tree-ring records of past climate-dendroclimatologists, but also to users of their results - climatologists, hydrologists, ecologists and archeologists.
    Type of Medium: Monograph available for loan
    Pages: xii, 365 S. : Ill., graph. Darst.
    ISBN: 9781402040108
    Series Statement: Developments in paleoenvironmental research 11
    Classification:
    Historical Geology
    Language: English
    Note: Contents: Part I Introductory Section. - 1 High-Resolution Paleoclimatology / Raymond S. Bradley. - 2 Dendroclimatology in High-Resolution Paleoclimatology / Malcolm K. Hughes. - Part II Scientific Bases of Dendroclimatology. - 3 How Well Understood Are the Processes that Create Dendroclimatic Records? A Mechanistic Model of the Climatic Control on Conifer Tree-Ring Growth Dynamics / Eugene A. Vaganov, Kevin J. Anchukaitis, and Michael N. Evans. - 4 Uncertainty, Emergence, and Statistics in Dendrochronology / Edward R. Cook and Neil Pederson. - 5 A Closer Look at Regional Curve Standardization of Tree-Ring Records: Justification of the Need, a Warning of Some Pitfalls, and Suggested Improvements in Its Application / Keith R. Briffa and Thomas M. Melvin. - 6 Stable Isotopes in Dendroclimatology: Moving Beyond ‘Potential’ / Mary Gagen, Danny McCarroll, Neil J. Loader, and Iain Robertson. - Part III Reconstruction of Climate Patterns and Values Relative to Today’s Climate. - 7 Dendroclimatology from Regional to Continental Scales: Understanding Regional Processes to Reconstruct Large-Scale Climatic Variations Across the Western Americas / Ricardo Villalba, Brian H. Luckman, Jose Boninsegna,Rosanne D. D’Arrigo, Antonio Lara, Jose Villanueva-Diaz, Mariano Masiokas, Jaime Argollo, Claudia Soliz, Carlos LeQuesne, David W. Stahle, Fidel Roig, Juan Carlos Aravena, Malcolm K. Hughes, Gregory Wiles, Gordon Jacoby, Peter Hartsough, Robert J.S. Wilson, Emma Watson, Edward R. Cook, Julian Cerano-Paredes, Matthew Therrell, Malcolm Cleaveland, Mariano S. Morales, Nicholas E. Graham, Jorge Moya, Jeanette Pacajes, Guillermina Massacchesi, Franco Biondi, Rocio Urrutia, and Guillermo Martinez Pastur. - Part IV Applications of Dendroclimatology. - 8 Application of Streamflow Reconstruction to Water Resources Management / David M. Meko and Connie A. Woodhouse. - 9 Climatic Inferences from Dendroecological Reconstructions / Thomas W. Swetnam and Peter M. Brown. - 10 North American Tree Rings, Climatic Extremes, and Social Disasters / David W. Stahle and Jeffrey S. Dean. - Part V Overview. - 11 Tree Rings and Climate: Sharpening the Focus / Malcolm K. Hughes, Henry F. Diaz, and Thomas W. Swetnam. - Index.
    Location: Upper compact magazine
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    Branch Library: GFZ Library
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  • 2
    Call number: AWI P5-10-0124
    In: IASC ... bulletin
    Type of Medium: Series available for loan
    Pages: 113 S. : Ill., graph. Darst.
    ISBN: 9783981363708
    Branch Library: AWI Library
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  • 3
    Call number: AWI A14-10-0012
    Description / Table of Contents: Demonstrating the breadth and depth of growth in the field since the publication of the popular first edition, Image Analysis, Classification and Change Detection in Remote Sensing, with Algorithms for ENVI/IDL, Second Edition has been updated and expanded to keep pace with the latest versions of the ENVI software environment. Effectively interweaving theory, algorithms, and computer codes, the text supplies an accessible introduction to the techniques used in the processing of remotely sensed imagery.
    Type of Medium: Monograph available for loan
    Pages: XIV, 441Seiten , Illustrationen
    Edition: Second edition
    ISBN: 978-1-4200-8713-0
    Language: English
    Note: Contents Preface to the Second Edition Preface to the First Edition 1. Images, Arrays, and Matrices 1.1 Multispectral Satellite Images 1.2 Algebra of Vectors and Matrices 1.2.1 Elementary Properties 1.2.2 Square Matrices 1.2.3 Singular Matrices 1.2.4 Symmetric, Positive Definite Matrices 1.2.5 Linear Dependence and Vector Spaces 1.3 Eigenvalues and Eigenvectors 1.4 Singular Value Decomposition 1.5 Vector Derivatives 1.6 Finding Minima and Maxima 1.7 Exercises 2. Image Statistics 2.1 Random Variables 2.1.1 Discrete Random Variables 2.1.2 Continuous Random Variables 2.1.3 Normal Distribution 2.2 Random Vectors 2.3 Parameter Estimation 2.3.1 Sampling a Distribution 2.3.2 Interval Estimation 2.3.3 Provisional Means 2.4 Hypothesis Testing and Sample Distribution Functions 2.4.1 Chi-Square Distribution 2.4.2 Student-t Distribution 2.4.3 F-Distribution 2.5 Conditional Probabilities, Bayes' Theorem, and Classification 2.6 Ordinary Linear Regression 2.6.1 One Independent Variable 2.6.2 More Than One Independent Variable 2.6.3 Regularization, Duality, and the Gram Matrix 2.7 Entropy and Information 2.7.1 Kullback-Leibler Divergence 2.7.2 Mutual Information 2.8 Exercises 3. Transformations 3.1 Discrete Fourier Transform 3.2 Discrete Wavelet Transform 3.2.1 Haar Wavelets 3.2.2 Image Compression 3.2.3 Multiresolution Analysis 3.2.3.1 Dilation Equation and Refinement Coefficients 3.2.3.2 Cascade Algorithm 3.2.3.3 Mother Wavelet 3.2.3.4 Daubechies D4 Scaling Function 3.3 Principal Components 3.3.1 Primal Solution 3.3.2 Dual Solution 3.4 Minimum Noise Fraction 3.4.1 Additive Noise 3.4.2 Minimum Noise Fraction Transformation in ENVI 3.5 Spatial Correlation 3.5.1 Maximum Autocorrelation Factor 3.5.2 Noise Estimation 3.6 Exercises 4. Filters, Kernels, and Fields 4.1 Convolution Theorem 4.2 Linear Filters 4.3 Wavelets and Filter Banks 4.3.1 One-Dimensional Arrays 4.3.2 Two-Dimensional Arrays 4.4 Kernel Methods 4.4.1 Valid Kernels 4.4.2 Kernel PCA 4.5 Gibbs-Markov Random Fields 4.6 Exercises 5. Image Enhancement and Correction 5.1 Lookup Tables and Histogram Functions 5.2 Filtering and Feature Extraction 5.2.1 Edge Detection 5.2.2 Invariant Moments 5.3 Panchromatic Sharpening 5.3.1 HSV Fusion 5.3.2 Brovey Fusion 5.3.3 PCA Fusion 5.3.4 DWT Fusion 5.3.5 A Trous Fusion 5.3.6 Quality Index 5.4 Topographic Correction 5.4.1 Rotation, Scaling, and Translation 5.4.2 Imaging Transformations 5.4.3 Camera Models and RFM Approximations 5.4.4 Stereo Imaging and Digital Elevation Models 5.4.5 Slope and Aspect 5.4.6 Illumination Correction 5.5 Image-Image Registration 5.5.1 Frequency-Domain Registration 5.5.2 Feature Matching 5.5.2.1 High-Pass Filtering 5.5.2.2 Closed Contours 5.5.2.3 Chain Codes and Moments 5.5.2.4 Contour Matching 5.5.2.5 Consistency Check 5.5.2.6 Implementation in IDL 5.5.3 Resampling and Warping 5.6 Exercises 6. Supervised Classification: Part 1 6.1 Maximum a Posteriori Probability 6.2 Training Data and Separability 6.3 Maximum Likelihood Classification 6.3.1 ENVI's Maximum Likelihood Classifier 6.3.2 Modified Maximum Likelihood Classifier 6.4 Gaussian Kernel Classification 6.5 Neural Networks 6.5.1 Neural Network Classifier 6.5.2 Cost Functions 6.5.3 Backpropagation 6.5.4 Overfitting and Generalization 6.6 Support Vector Machines 6.6.1 Linearly Separable Classes 6.6.1.1 Primal Formulation 6.6.1.2 Dual Formulation 6.6.1.3 Quadratic Programming and Support Vectors 6.6.2 Overlapping Classes 6.6.3 Solution with Sequential Minimal Optimization 6.6.4 Multiclass SVMs 6.6.5 Kernel Substitution 6.6.6 Modified SVM Classifier 6.7 Exercises 7. Supervised Classification: Part 2 7.1 Postprocessing 7.1.1 Majority Filtering 7.1.2 Probabilistic Label Relaxation 7.2 Evaluation and Comparison of Classification Accuracy 7.2.1 Accuracy Assessment 7.2.2 Model Comparison 7.3 Adaptive Boosting 7.4 Hyperspectral Analysis 7.4.1 Spectral Mixture Modeling 7.4.2 Unconstrained Linear Unmixing 7.4.3 Intrinsic End-Members and Pixel Purity 7.5 Exercises 8. Unsupervised Classification 8.1 Simple Cost Functions 8.2 Algorithms That Minimize the Simple Cost Functions 8.2.1 K-Means Clustering 8.2.2 Kernel K-Means Clustering 8.2.3 Extended K-Means Clustering 8.2.4 Agglomerative Hierarchical Clustering 8.2.5 Fuzzy K-Means Clustering 8.3 Gaussian Mixture Clustering 8.3.1 Expectation Maximization 8.3.2 Simulated Annealing 8.3.3 Partition Density 8.3.4 Implementation Notes 8.4 Including Spatial Information 8.4.1 Multiresolution Clustering 8.4.2 Spatial Clustering 8.5 Benchmark 8.6 Kohonen Self-Organizing Map 8.7 Image Segmentation 8.7.1 Segmenting a Classified Image 8.7.2 Object-Based Classification 8.7.3 Mean Shift 8.8 Exercises 9. Change Detection 9.1 Algebraic Methods 9.2 Postclassification Comparison 9.3 Principal Components Analysis 9.3.1 Iterated PCA 9.3.2 Kernel PCA 9.4 Multivariate Alteration Detection 9.4.1 Canonical Correlation Analysis 9.4.2 Orthogonality Properties 9.4.3 Scale Invariance 9.4.4 Iteratively Reweighted MAD 9.4.5 Correlation with the Original Observations 9.4.6 Regularization 9.4.7 Postprocessing 9.5 Decision Thresholds and Unsupervised Classification of Changes 9.6 Radiometrie Normalization 9.7 Exercises Appendix A: Mathematical Tools A.l Cholesky Decomposition A.2 Vector and Inner Product Spaces A.3 Least Squares Procedures A.3.1 Recursive Linear Regression A.3.2 Orthogonal Linear Regression Appendix B: Efficient Neural Network Training Algorithms B.1 Hessian Matrix B.1.1 R-Operator B.1.1.1 Determination of Rv{n} B.1.1.2 Determination of Rv{δo} B.1.1.3 Determination of Rv{δh} B.1.2 Calculating the Hessian B.2 Scaled Conjugate Gradient Training B.2.1 Conjugate Directions B.2.2 Minimizing a Quadratic Function B.2.3 Algorithm B.3 Kaiman Filter Training B.3.1 Linearization B.3.2 Algorithm B.4 A Neural Network Classifier with Hybrid Training Appendix C: ENVI Extensions in IDL C.1 Installation C.2 Extensions C.2.1 Kernel Principal Components Analysis C.2.2 Discrete Wavelet Transform Fusion C.2.3 A Trous Wavelet Transform Fusion C.2.4 Quality Index C.2.5 Calculating Heights of Man-Made Structures in High-Resolution Imagery C.2.6 Illumination Correction C.2.7 Image Registration C.2.8 Maximum Likelihood Classification C.2.9 Gaussian Kernel Classification C.2.10 Neural Network Classification C.2.11 Support Vector Machine Classification C.2.12 Probabilistic Label Relaxation C.2.13 Classifier Evaluation and Comparison C.2.14 Adaptive Boosting a Neural Network Classifier C.2.15 Kernel K-Means Clustering C.2.16 Agglomerative Hierarchical Clustering C.2.17 Fuzzy K-Means Clustering C.2.18 Gaussian Mixture Clustering C.2.19 Kohonen Self-Organizing Map C.2.20 Classified Image Segmentation C.2.21 Mean Shift Segmentation C.2.22 Multivariate Alteration Detection C.2.23 Viewing Changes C.2.24 Radiometric Normalization Appendix D: Mathematical Notation References Index
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 4
    Call number: AWI A4-10-0015
    Description / Table of Contents: [...] In diesem Band werden aus dem Arbeitsgebiet von Prof. Klaus Dethloff interessante Ergebnisse und neue Entwicklungen vorgestellt. Zu vielen dieser wissenschaftlichen Fortschritte hat er selber direkt oder indirekt beigetragen. [...]
    Type of Medium: Monograph available for loan
    Pages: 244 S. : Ill., graph. Darst.
    Branch Library: AWI Library
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  • 5
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    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-615
    In: Berichte zur Polar- und Meeresforschung
    Description / Table of Contents: Die Polarstern Expedition ARK-XXIV/3 hatte die Seegebiete von Ostgrönland als Zielgebiet. Schwerpunkt der wissenschaftlichen Programme war geowissenschaftliche Forschung zur tektonischen und glazialen Geschichte von Ostgrönland.
    Type of Medium: 12
    Pages: Online-Ressource
    ISSN: 1866-3192
    Series Statement: Berichte zur Polar- und Meeresforschung 615
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  • 6
    Monograph available for loan
    Monograph available for loan
    Cambridge [u.a.] : Cambridge Univ. Pr.
    Call number: AWI G6-10-0141
    Description / Table of Contents: The first comprehensive, state-of-the-art introduction to the fast-evolving topic of in-situ produced cosmogenic nuclides, for graduate students and practitioners.
    Type of Medium: Monograph available for loan
    Pages: IX, 187 S. : Ill.
    Edition: 1 ed.
    ISBN: 9780521873802 , 0-521-87380-0
    Language: English
    Note: Contents: Preface. - 1 Cosmic rays. - 1.1 Origin and nature of cosmic rays. - 1.2 Interaction with magnetic fields. - 1.3 Interactions with the Earth's atmosphere. - 1.4 Interactions with the Earth's surface. - 1.5 Production of cosmogenic nuclides. - 1.6 Detection of cosmic rays. - 2 Cosmogenic nuclides. - 2.1 'Useful' cosmogenic nuclides. - 2.2 Stable cosmogenic nuclides. - 2.3 Cosmogenic radionuclides. - 2.4 Sample preparation. - 2.5 Analytical methods. - 3 Production rates and scaling factors. - 3.1 Deriving production rates. - 3.2 Scaling factors. - 3.3 Building scaling factors. - 4 Application of cosmogenic nuclldes to Earth surface sciences. - 4.1 Exposure dating. - 4.2 Burial dating. - 4.3 Erosion/denudation rates. - 4.4 Uplift rates. - 4.5 Soil dynamics. - 4.6 Dealing with uncertainty. - Appendix A: Sampling checklist. - Appendix B: Reporting of cosrnogenic-nudide data for exposure age and erosion rate determinations. - References. - Index.
    Location: AWI Reading room
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  • 7
    Call number: ZSP-168-611
    In: Berichte zur Polar- und Meeresforschung
    Description / Table of Contents: Ziel der Arbeit ist die Ableitung von Materialparametern von Firn in Abhängigkeit von seiner Dichte zur Beschreibung des zeitabhängigen Verformungsverhaltens unter Druckspannungen. Die dem Firn in seiner natürlichen Tiefenlage entsprechenden Seitendrücke werden dabei berücksichtigt. Es werden sowohl der lineare wie auch der nichtlineare Spannungs-Verformungsbereich untersucht. [...] In einer weiteren Betrachtung wird der über das gleiche Stoffgesetz erfassbare zeitliche Verlauf der Verformungen berücksichtigt und die daraus ermittelten dichteabhängigen Materialparameter vorgestellt.
    Type of Medium: 12
    Pages: Online-Ressource
    ISSN: 1866-3192
    Series Statement: Berichte zur Polar- und Meeresforschung 611
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  • 8
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    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-608
    In: Berichte zur Polar- und Meeresforschung
    Type of Medium: 12
    Pages: Online-Ressource
    ISSN: 1866-3192
    Series Statement: Berichte zur Polar- und Meeresforschung 608
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  • 9
    Monograph available for loan
    Monograph available for loan
    Associated volumes
    Call number: AWI S6-10-0022
    In: Beispiele aus unserer Forschung
    Description / Table of Contents: [...] Diese Broschüre gibt einen Überblick über die Infrastruktur des AWI und wichtige Themen in den Jahren 2008/2009. Einige ausgewählte Beiträge stellen in knapper Form typische Projekte vor, die das wissenschaftliche Profil des AWI charakterisieren. Sie können einen Einblick erhalten, welche Fragen die Polar- und Meeresforschung in der heutigen Zeit bewegen, welche Motive zu den Forschungsthemen geführt haben und welche Beiträge sie zur modernen Umweltforschung leisten kann.
    Type of Medium: Monograph available for loan
    Pages: 76 S. : Ill.
    Branch Library: AWI Library
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  • 10
    facet.materialart.12
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    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Call number: ZSP-168-607
    In: Berichte zur Polar- und Meeresforschung
    Type of Medium: 12
    Pages: Online-Ressource
    ISSN: 1866-3192
    Series Statement: Berichte zur Polar- und Meeresforschung 607
    Location: AWI Reading room
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