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  • 1
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Recurrent sequences (Mathematics). ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (426 pages)
    Edition: 1st ed.
    ISBN: 9783319071558
    Series Statement: Understanding Complex Systems Series
    DDC: 515.39
    Language: English
    Note: Intro -- Preface -- Contents -- Part I RQA Theory -- Chapter 1 Mathematical and Computational Foundations of Recurrence Quantifications -- 1.1 Phase Space Trajectories -- 1.2 Recurrence Plots -- 1.2.1 Definition of Recurrence Plots -- 1.2.2 Structures in Recurrence Plots -- 1.3 Recurrence Quantifications -- 1.3.1 Classical Recurrence Quantification Analysis -- 1.3.2 Extended Recurrence Quantification Analysis -- 1.3.3 Recurrence Time Based Measures -- 1.3.4 Complex Network Based Quantification -- 1.3.5 Advanced Quantification -- 1.3.6 Windowing Techniques -- 1.3.7 Remark on Significance -- 1.3.8 Example: Rössler System with Regime Transitions -- 1.4 Bivariate Extensions of Recurrence Analysis -- 1.4.1 Cross Recurrence Plot -- 1.4.2 Joint Recurrence Plot -- 1.4.3 Comparison Between CRPs and JRPs -- 1.5 Computational Foundations of Recurrence Quantification Analysis -- 1.5.1 Brief Historical Background -- 1.5.2 Computational Strategies -- 1.5.3 Example Program Runs -- 1.5.3.1 Programs RQD, KRQD and JRQD -- 1.5.3.2 Programs RQS, KRQS and JRQS -- 1.5.3.3 Programs RQE, KRQE and JRQE -- 1.5.4 Advanced Topics -- 1.6 Summary -- Appendix: Mathematical Models -- Auto-Regressive Process of 1st Order -- Lorenz System lorenz63 -- Rössler System roessler1976 -- Mutually Coupled Rössler Systems -- References -- Chapter 2 Estimating Kolmogorov Entropy from Recurrence Plots -- 2.1 Introduction -- 2.1.1 Entropy -- 2.1.2 Recurrence Plots -- 2.2 Discrete-State Signals -- 2.2.1 Messages, Symbolic Sequences and Discrete Sources -- 2.2.2 Entropy Rate of Symbolic Sequences -- 2.2.3 Shannon-McMillan-Breiman Theorem -- 2.2.4 RP-Based Estimation of the Entropy (Per Unit Time) -- 2.3 Continuous-State Dynamics -- 2.3.1 Kolmogorov Entropy for a Continuous State System -- 2.3.2 Grassberger and Procaccia Method for Computing K2 -- 2.3.3 RP-Based Method for Computing K2. , 2.4 Some Factors Influencing Computation of Entropy -- 2.4.1 The Notion of ε-Entropy for Analyzing Noisy Dynamics -- 2.4.2 Non-stationarity -- 2.5 Discussion -- References -- Chapter 3 Identifying Coupling Directions by Recurrences -- 3.1 Part I: Estimation of the Direction of the Coupling by Conditional Probabilities of Recurrence -- 3.1.1 Introduction: Part I -- 3.1.2 Detection of the Coupling Direction by Recurrences -- 3.1.3 Numerical Examples -- 3.1.3.1 Strongly Coupled Systems -- 3.1.3.2 Weakly Coupled Systems -- 3.1.3.3 Structurally Different Systems -- 3.1.4 Choice of the Parameters -- 3.1.5 Influence of Noise -- 3.1.6 Passive Experiments -- 3.1.7 Comparison with Other Methods -- 3.1.8 Conclusions: Part I -- 3.2 Part II: Inferring Indirect Coupling -- 3.2.1 Introduction: Part II -- 3.2.2 First Step: Univariate Analysis -- 3.2.3 Second Step: Pairwise Analysis -- 3.2.4 Third Step: Partial MCR -- 3.2.5 Decision Tree -- 3.2.6 Partial MCR for All Couplings of Fig.3.10 -- 3.2.7 Conclusions: Part II -- References -- Chapter 4 Complex Network Analysis of Recurrences -- 4.1 Introduction -- 4.2 From Recurrence Plots to Recurrence Networks -- 4.2.1 Recurrence Networks from Single Dynamical Systems -- 4.2.1.1 Basic Idea -- 4.2.1.2 Complex Network Characteristics -- 4.2.1.3 Shortest Paths in Recurrence Networks -- 4.2.1.4 Local (Vertex-Based) Measures -- 4.2.1.5 Pairwise Vertex and Edge Measures -- 4.2.1.6 Global Network Measures -- 4.2.2 Inter-System Recurrence Networks -- 4.2.2.1 Cross-Recurrences and Cross-Recurrence Networks -- 4.2.2.2 Combining Single-System and Cross-Recurrence Networks -- 4.2.2.3 Interacting Network Characteristics -- 4.2.2.4 Local Measures -- 4.2.2.5 Global Measures -- 4.2.3 Joint Recurrence Networks -- 4.2.3.1 Basic Idea -- 4.2.3.2 α-Joint Recurrence Networks -- 4.3 Analytical Description of Recurrence Networks. , 4.3.1 Random Geometric Graphs -- 4.3.2 Single-System Recurrence Network Characteristics -- 4.3.2.1 General Setting -- 4.3.2.2 Shortest Paths and Geodesics -- 4.3.2.3 Local (Vertex-Based) Measures -- 4.3.2.4 Pairwise Vertex and Edge Measures -- 4.3.2.5 Global Network Measures -- 4.3.2.6 Further Characteristics -- 4.3.3 Inter-System Recurrence Network Characteristics -- 4.3.3.1 Local Measures -- 4.3.3.2 Global Measures -- 4.4 Recurrence Networks: General Properties and Applications -- 4.4.1 Generic Network Characteristics -- 4.4.1.1 Absence of Small-World Effects -- 4.4.1.2 Emergence of Scale-Free Distributions -- 4.4.1.3 Assortative vs. Disassortative Mixing -- 4.4.2 Characterization of Dynamical Complexity -- 4.4.2.1 Average Path Length -- 4.4.2.2 Network Transitivity -- 4.4.2.3 Other Network Characteristics -- 4.4.2.4 Example: Tracing Bifurcations in the Rössler System -- 4.4.3 Characterization of Local Dimensionality -- 4.4.4 Cross-Transitivity Properties and Coupling Asymmetry -- 4.4.5 Joint Transitivity Properties and Synchronization -- 4.4.6 Real-World Applications -- 4.4.6.1 Applications in Climatology -- 4.4.6.2 Applications in Fluid Dynamics -- 4.4.6.3 Applications in Electrochemistry -- 4.4.6.4 Applications in Medicine -- 4.5 Related Approaches -- 4.6 Summary -- References -- Part II RQA Best Practices -- Chapter 5 From Time to Space Recurrences in Biopolymers -- 5.1 Introduction -- 5.1.1 Generalities -- 5.1.2 Recurrence Plots as Distance Matrices -- 5.2 Results -- 5.2.1 Folding Metrics -- 5.2.2 Chemical Metrics -- 5.2.2.1 Functional Hot-Spots in the P53 Protein -- 5.2.2.2 Thermophylic and Mesophylic Rubredoxins -- 5.3 Mixed Metrics for Complex Behavior -- 5.4 Shifting from Protein to DNA Analysis: A Cryptography Tale -- 5.4.1 Coding and Noncoding Regions in DNA -- 5.4.2 Specific Repeated Words in DNA. , 5.5 Analyzing the Information Content of Biopolymers -- 5.6 Conclusion -- Appendix 1: Cryptography -- Appendix 2: Strings from Human Languages -- (A) Dante Alighieri - Inferno - I Canto (tercets 1-3) - FILTERED -- (B) Dante Alighieri - Inferno - I Canto (tercets 1-3) - NONFILTERED (English Translation by Henry Wadsworth Longfellow)) -- (C) Dr. Suess Poem - NONFILTERED -- Appendix 3: Nucleotidic Strings -- Satellite DNA 1 - GenBank: BI067039.1 Homo Sapiens Genomic Region Containing Hypervariable Minisatellites, mRNA Sequence -- Satellite DNA 2 - GenBank: BM439581.1 Homo Sapiens Genomic Region Containing Hypervariable Minisatellites, mRNA Sequence -- References -- Chapter 6 Dynamic Coupling Between Respiratory and Cardiovascular System -- 6.1 Introduction -- 6.2 Recurrence Plot Analysis for the Interaction Between Two Series -- 6.2.1 Application to Test Data Set -- 6.2.2 Quantification -- 6.3 Quantification of Recurrences of the Van Der Pol Model -- 6.4 Cardiorespiratory Synchronization Experiment -- 6.5 Discussion -- References -- Chapter 7 Analysis of Brain Recurrence -- Abbreviations -- 7.1 Introduction -- 7.2 The Brain -- 7.2.1 Physiological Role -- 7.2.2 The Baseline EEG -- 7.2.3 The Stimulated EEG -- 7.2.4 Uses of EEG -- 7.2.5 Complexity Conjecture -- 7.3 Recurrence Analysis -- 7.3.1 Historical Development -- 7.3.2 General Properties of Recurrence Analysis -- 7.3.3 Recurrence Analysis of Model Systems -- 7.3.3.1 Model Systems -- 7.3.3.2 Detection of Nonlinear Determinism -- 7.3.4 Overview of Recurrence Analysis of Brain Electrical Activity -- 7.4 Application of Recurrence Analysis -- 7.4.1 New Paradigm for Studying the Brain -- 7.4.2 Statistical Basis of Brain Recurrence Analysis -- 7.4.3 Discovery of Human Magnetic Sense -- 7.4.4 Rationalizing Inconsistency -- 7.4.5 Canonical Conditions and ABR Variables -- 7.4.6 Inferring Mechanisms. , 7.4.7 Cell-Phone Effects on the Brain -- 7.4.8 Detecting the Presence Effect -- 7.4.9 Diagnosing Multiple Sclerosis -- 7.4.10 Applications in Sleep Medicine -- 7.5 Summary -- References -- Chapter 8 Recurrence Analysis of Otoacoustic Emissions -- 8.1 Introduction -- 8.2 Ear Morphology and Physiology -- 8.3 Otoacoustic Emissions (OAE) -- 8.4 Hearing Losses -- 8.4.1 Age-Related Hearing Loss (ARHL) -- 8.4.2 Noise Induced Hearing Loss (NIHL) -- 8.5 Clinical Practice -- 8.5.1 Pure Tone Audiometry -- 8.5.2 ILO Test -- 8.6 RQA to Study the Characteristics of Otoacoustic Emissions -- 8.7 RQA and Models of the Ear to Study the Origin of Otoacoustic Emissions -- 8.8 RQA in the Diagnosis of Hearing Losses -- 8.8.1 RQA Applied to the Study of CHL and SHL -- 8.8.2 RQA Applied to the Study of ARHL and NIHL -- 8.9 Conclusions and Future Directions -- References -- Chapter 9 Vibration Analysis in Cutting Materials -- 9.1 Introduction and the Dynamical Model -- 9.2 Simulation Results -- 9.3 Recurrence Plot Analysis -- 9.4 Conclusions -- References -- Chapter 10 Dynamical Patterns in Seismology -- 10.1 Introduction -- 10.2 Elements of Seismology -- 10.2.1 Physics of Earthquakes -- 10.2.2 Stick-Slip as a Physical Model of the Seismic Process -- 10.2.3 Seismic Time Series -- 10.2.4 Scaling Relations -- 10.2.5 Patterns of Seismicity -- 10.2.6 Earthquake Prediction -- 10.2.7 Earthquake "Control" -- 10.3 Methods of Revealing Dynamic Patterns in Acoustic/Seismic Time Series -- 10.4 Triggering and Synchronization of Stick-Slip: Laboratory Model of Seismic Process -- 10.4.1 Electromagnetic Triggering of Slip -- 10.4.2 Electromagnetic Stick-Slip Synchronization -- 10.4.3 Measuring EM Synchronization Strength of Stick-Slip -- 10.4.3.1 High Order EM Synchronization of Stick-Slip -- 10.4.4 Dynamic Mechanical Synchronization of Stick-Slip -- 10.5 Dynamical Patterns in Seismicity. , 10.5.1 Recurrence Patterns in Seismic Catalogs.
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  • 2
    Keywords: Engineering. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (387 pages)
    Edition: 1st ed.
    ISBN: 9783319299228
    Series Statement: Springer Proceedings in Physics Series ; v.180
    DDC: 530.15
    Language: English
    Note: Intro -- Foreword -- Preface -- Acknowledgments -- Contents -- Contributors -- Part IMethodological/Theoretical Recurrences -- 1 Torwards Visual Analytics for the Exploration of Large Sets of Time Series -- 1.1 Introduction -- 1.2 Methodology -- 1.2.1 Recurrence Quantification Analysis -- 1.2.2 VAT and iVAT -- 1.2.3 Definitions -- 1.3 Experiment with Synthetic Signals -- 1.3.1 Experimental Setup -- 1.3.2 Experimental Procedure -- 1.3.3 Discussion -- 1.3.4 Potential of Clustering Algorithms -- 1.3.5 Effect of Noise -- 1.4 Experiment with Real-World Signals -- 1.5 Future Lines of Research -- 1.6 Conclusion -- References -- 2 Applications of Transient Signal Analysis Using the Concept of Recurrence Plot Analysis -- Abstract -- 2.1 Introduction -- 2.2 Signal Analysis Tools Based on the RPA Concept -- 2.2.1 The Time-Distributed Recurrence Measure -- 2.2.2 Multi-lag Phase-Space Analysis -- 2.3 Characterization of Partial Discharges in High Voltage Cables -- 2.4 Electrical Arcs in Photovoltaic Panels -- 2.5 Water Hammer Effect Quantification -- 2.6 Conclusions -- Acknowledgement -- References -- 3 Multi-lag Phase Diagram Analysis for Transient Signal Characterization -- 3.1 Introduction -- 3.2 Mathematical Properties of Lag Diversity in Phase Diagram -- 3.3 Multi-lag Phase Diagram Analysis -- 3.3.1 Ellipse Modeling -- 3.3.2 Trend Modeling -- 3.3.3 Extremum Points/Bounding Box -- 3.3.4 Area Calculation -- 3.3.5 Polar Coordinates Analysis -- 3.4 Application Example -- 3.5 Conclusions and Perspectives -- References -- 4 Analysis of Non-stationary Signals by Recurrence Dissimilarity -- 4.1 Introduction -- 4.2 Investigated Nonlinear Systems -- 4.2.1 Burke--Shaw -- 4.2.2 Duffing--van der Pol Oscillator -- 4.2.3 Windmi -- 4.2.4 Noise Generation -- 4.3 Recurrence Dissimilarity -- 4.4 Examination of the Signal State. , 4.4.1 Detection of Chaotic Windows in the Burke--Shaw System -- 4.4.2 Recurrence Dissimilarity in the Duffing--van der Pol System -- 4.4.3 Detection of Chaotic and Periodic Windows in the Windmi System -- 4.5 Recurrence Dissimilarity in the ECG Signals -- 4.6 Evolution of the Two-Phase Flowing Systems -- 4.7 Recurrence Dissimilarity Versus Periodogram Map -- 4.8 Conclusions -- References -- 5 New Insights for Testing Linearity and Complexity with Surrogates: A Recurrence Plot Approach -- 5.1 Introduction -- 5.2 Surrogate Techniques -- 5.2.1 Surrogates for Testing Non-linearity -- 5.2.2 Pseudo-Periodic Twin Surrogates (PPTS) -- 5.3 Discriminating Non-linearity Tests and Statistics Based on Recurrence Plots -- 5.3.1 Reformulation of the DVV Using RPs -- 5.3.2 RQA Measures as Discriminating Statistics -- 5.3.3 Hypothesis Test -- 5.4 Applications -- 5.5 Conclusions -- References -- 6 Approximate Recurrence Quantification Analysis (aRQA) in Code of Best Practice -- 6.1 Introduction -- 6.2 Background and Notation -- 6.2.1 Recurrence Plots (RPs) -- 6.2.2 Recurrence Rate (RR) -- 6.2.3 Determinism (DET) -- 6.2.4 Average Diagonal Line Length (L) -- 6.2.5 Laminarity (LAM) -- 6.3 Approximate Recurrence Quantification Analysis -- 6.3.1 Reformulation of Recurrence Rate (RR) -- 6.3.2 Reformulation of Determinism (DET) -- 6.3.3 Reformulation of Average Diagonal Line Length (L) -- 6.3.4 Reformulation of Laminarity (LAM) -- 6.4 Approximate Recurrence Quantification Analysis with MATLAB -- 6.4.1 Time Delay Embedding -- 6.4.2 Discretization -- 6.4.3 Pairwise Proximity -- 6.4.4 Stationary States -- 6.4.5 Approximate RQA -- 6.5 Empirical Results -- 6.5.1 Data -- 6.5.2 Experimental Protocol -- 6.5.3 Results on Runtime -- 6.5.4 Results on Correlation -- 6.6 Conclusion and Future Work -- References -- 7 Splayed Recurrence Analysis of Iterated Dynamical Systems. , Abstract -- 7.1 Introduction -- 7.2 Graphical Theory -- 7.3 Algorithmic Implementation -- 7.4 SRA Variables -- 7.5 Test Data Sets -- 7.6 Splayed Recurrence Analysis of Test Data Sets -- 7.7 Splayed Recurrence Intervals -- 7.8 Line Entropy and Recurrence Density -- 7.9 Line Lengths and Slopes -- 7.10 Roulette Wheel Challenge -- 7.11 Discussion -- 7.12 Conclusions -- References -- Part IIPractical/Utilitarian Recurrences -- 8 Assessment of Heart Rate Complexity Recovery from Maximal Exercise Using Recurrence Quantification Analysis -- Abstract -- 8.1 Introduction -- 8.2 Methods -- 8.3 Results -- 8.4 Discussion -- 8.5 Conclusions -- References -- 9 Recurrence Analysis of Cardiac Restitution in Human Ventricle -- Abstract -- 9.1 Introduction -- 9.2 Methods -- 9.2.1 Generation of Time-Series -- 9.2.2 Dynamic Bifurcation Diagrams -- 9.3 Results -- 9.3.1 Dynamic Method -- 9.3.2 The Stationarity Method -- 9.4 Discussion -- Acknowledgment -- References -- 10 The Early Phases of Epileptogenesis Induced by Status Epilepticus Are Characterized by Persistent Dynamical Regime of Intermittency Type -- Abstract -- 10.1 Introduction -- 10.2 Methods -- 10.2.1 Animals -- 10.2.2 Models of Epileptogenesis -- 10.2.2.1 Surgical Procedure and Induction of the SE for the Rat Model of Epileptogenesis -- 10.2.2.2 Surgical Procedure and Induction of the SE for the Mouse Model of Epileptogenesis -- 10.2.3 Selection Criteria of the Time Windows of Epileptogenesis and the Related EEG Epochs, for Nonlinear Analysis -- 10.2.4 The Recurrence Quantification Analysis -- 10.2.5 Surrogates Technique and Test of Significance -- 10.2.6 Computational Resources and Software -- 10.2.7 Statistics -- 10.3 Results -- 10.4 Discussion -- Acknowledgments -- References -- 11 Chromatic and Anisotropic Cross-Recurrence Quantification Analysis of Interpersonal Behavior -- Abstract -- 11.1 Introduction. , 11.2 Cross-Matching and Chromatic Quantification Analysis -- 11.2.1 Cross-Matching Procedure -- 11.2.2 Chromatic CRQA -- 11.2.3 Application of Chromatic CRQA: Children's Dyadic Problem Solving -- 11.3 Anisotropic CRQA -- 11.3.1 Analysis of Anisotropic CRPs -- 11.3.2 Application of Anisotropic CRQA: Asymmetric Gestures-Speech Attunement -- 11.4 Model Example of Anisotropic CRQA -- 11.5 Discussion -- Acknowledgment -- References -- 12 Using Cross-Recurrence Quantification Analysis to Understand Social Motor Coordination in Children with Autism Spectrum Disorder -- Abstract -- 12.1 Introduction -- 12.2 Method -- 12.2.1 Data Analysis -- 12.2.1.1 Distribution of Relative Phase Angles (DRP) -- 12.2.1.2 Cross Recurrence Quantification Analysis (CRQA) -- 12.3 Results -- 12.3.1 Object Tapping Task -- 12.3.2 Interpersonal Hand Clapping Game -- 12.4 Discussion -- Acknowledgments -- References -- 13 Restoring Corrupted Cross-Recurrence Plots Using Matrix Completion: Application on the Time-Synchronization Between Market and Volatility Indexes -- 13.1 Introduction -- 13.2 Market and Volatility Indexes: The S& -- P 500--VIX Case -- 13.3 Time-Synchronization Using CRPs -- 13.3.1 Estimation of Embedding Parameters -- 13.4 Restoring Missing Entries in Unthresholded CRPs Using Matrix Completion -- 13.5 Performance Evaluation -- 13.6 Qualitative Economic Implications and Future Work -- References -- 14 Time-Difference-of-Arrival Estimation Based on Cross Recurrence Plots, with Application to Underwater Acoustic Signals -- 14.1 Introduction -- 14.2 Method -- 14.2.1 About Cross-Recurrence Plots -- 14.2.2 Recurrence Quantification Analysis -- 14.2.3 Time-Difference-of-Arrival Estimated with RQA Measures -- 14.3 Results on Simulated Data -- 14.3.1 Performance Analysis Methodology -- 14.3.2 Performances of the RQA Measures. , 14.3.3 Performances as a Function of the Parameters Used to Build the CRP -- 14.3.4 Comparison with the Classical Cross-Correlation -- 14.4 Validation on Real Data -- 14.4.1 Materials and Methods -- 14.4.2 Methodology to Assess the Results on Real Data -- 14.4.3 Results -- 14.5 Conclusion -- References -- 15 Reservoir-Induced Changes in Dynamics and Synchrony of River Water Temperatures Revealed by RQA and CRQA -- Abstract -- 15.1 Introduction -- 15.2 Study Area and Data Description -- 15.3 Methods -- 15.4 Results and Discussion -- 15.5 Conclusions -- Acknowledgements -- References -- 16 Recurrence Analysis of Eddy Covariance Fluxes -- 16.1 Introduction -- 16.2 Data and Preprocessing -- 16.2.1 High Resolution Data from DE-Bay -- 16.2.2 Fluxnet Data from NL-Loo -- 16.3 Recurrence Analysis of Eddy Covariance Fluxes -- 16.3.1 Embedding -- 16.3.2 Recurrence Analysis -- 16.4 High Resolution Data at DE-Bay -- 16.4.1 Fixing Embedding and RA Parameters -- 16.4.2 Changing the Temporal Resolution -- 16.4.3 Results and Discussion -- 16.5 Fluxes at NL-Loo -- 16.5.1 Fixing Embedding and RA Parameters -- 16.5.2 Results and Discussion -- 16.6 Conclusions -- References -- 17 Recurrence Plots for the Analysis of Combustion Dynamics -- 17.1 Introduction -- 17.2 Case Studies -- 17.2.1 Unveiling the Spatio-Temporal Nature of Combustion Dynamics for Turbulent Flame -- 17.2.2 RP Structures for Thermoacoustic Coupling and a Precursor to Flame Blowout -- 17.3 Conclusions -- References -- 18 Recurrence Analysis of Turbulent Fluctuations in Magnetically Confined Plasmas -- 18.1 Introduction -- 18.2 Electrostatic Potential Fluctuations -- 18.3 Recurrence-Based Analysis of Turbulent Fluctuations -- 18.4 Effects of a Bias Radial Electric Field -- 18.5 Conclusions -- References. , 19 Recurrence Quantification Analysis as an Approach for Ultrasonic Testing of Porous Carbon Fibre Reinforced Polymers.
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  • 3
    Keywords: Forschungsbericht ; Klimaänderung ; Pathogener Mikroorganismus ; Grippe ; Internationaler Luftverkehr ; Ausbreitung ; Modell
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (17 Seiten, 1,63 MB) , Diagramme, Karten
    Language: German
    Note: Förderkennzeichen BMBF 03ZZ0802B. - Verbund-Nummer 01157946 , Autoren dem Berichtsblatt entnommen. - Paralleltitel dem englischen Berichtsblatt entnommen , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Sprache der Zusammenfassung: Deutsch, Englisch
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  • 4
    Keywords: Forschungsbericht ; Klimaänderung ; Naturgefahr
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (55 Seiten, 2,55 MB) , Illustrationen, Diagramme
    Language: German
    Note: Förderkennzeichen BMBF 03IS2191B. - Verbund-Nummer 01074974 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 5
    Book
    Book
    Berlin : Springer
    Keywords: MATLAB ; Earth sciences Mathematics ; Earth sciences Data processing ; Geologie ; Geowissenschaften ; Datenanalyse ; MATLAB ; MATLAB ; Geowissenschaften
    Type of Medium: Book
    Pages: XII, 288 S. , Ill., graph. Darst. , 1 CD-ROM , 24 cm
    Edition: 2. ed.
    ISBN: 3540727485 , 9783540727484
    DDC: 550.285
    RVK:
    RVK:
    Language: English
    Note: 1. ed. 2006
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  • 6
    Publication Date: 2023-10-24
    Description: Trends in flood magnitudes vary across the conterminous USA (CONUS). There have been attempts to identify what controls these regionally varying trends, but these attempts were limited to certain—for example, climatic—variables or to smaller regions, using different methods and datasets each time. Here we attribute the trends in annual maximum streamflow for 4,390 gauging stations across the CONUS in the period 1960–2010, while using a novel combination of methods and an unprecedented variety of potential controlling variables to allow large‐scale comparisons and minimize biases. Using process‐based flood classification and complex networks, we find 10 distinct clusters of catchments with similar flood behavior. We compile a set of 31 hydro‐climatological and land use variables as predictors for 10 separate Random Forest models, allowing us to find the main controls the flood magnitude trends for each cluster. By using Accumulated Local Effect plots, we can understand how these controls influence the trends in the flood magnitude. We show that hydro‐climatologic changes and land use are of similar importance for flood magnitude trends across the CONUS. Static land use variables are more important than their trends, suggesting that land use is able to attenuate (forested areas) or amplify (urbanized areas) the effects of climatic changes on flood magnitudes. For some variables, we find opposing effects in different regions, showing that flood trend controls are highly dependent on regional characteristics and that our novel approach is necessary to attribute flood magnitude trends reliably at the continental scale while maintaining sensitivity to regional controls.
    Description: Key Points: A wide variety of controls are necessary to explain flood magnitude trends across the United States between 1960 and 2010. Climatic changes and land cover conditions are of similar importance for flood magnitude trends at the regional scale. Controls on flood trends can have highly nonlinear effects and can have opposing effects in different hydro‐climatological subregions.
    Description: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
    Description: USACE Water Institute
    Description: Bundesministerium für Bildung und Forschung http://dx.doi.org/10.13039/501100002347
    Description: https://nwis.waterdata.usgs.gov/usa/nwis/peak
    Description: https://water.usgs.gov/GIS/metadata/usgswrd/XML/streamgagebasins.xml
    Description: https://psl.noaa.gov/
    Description: https://www.sciencebase.gov/catalog/item/59692a64e4b0d1f9f05fbd39
    Keywords: ddc:551.48 ; annual maximum flood ; magnitude trends ; drivers ; Random Forest ; clustering ; climate change
    Language: English
    Type: doc-type:article
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  • 7
    Publication Date: 2018-02-09
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 8
    Publication Date: 2017-06-12
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 9
    Publication Date: 2019-07-17
    Description: Internal variability of the Asian monsoon system and the relationship amongst its sub-systems, the Indian and East Asian Summer Monsoon, are not sufficiently understood to predict its responses to a future warming climate. Past environmental variability is recorded in Palaeoclimate proxy data. In the Asian monsoon domain many records are available, e.g. from stalagmites, tree-rings or sediment cores. They have to be interpreted in the context of each other, but visual comparison is insufficient. Heterogeneous growth rates lead to uneven temporal sampling. Therefore, computing correlation values is difficult because standard methods require co-eval observation times, and sampling-dependent bias effects may occur. Climate networks are tools to extract system dynamics from observed time series, and to investigate Earth system dynamics in a spatio-temporal context. We establish paleoclimate networks to compare paleoclimate records within a spatially extended domain. Our approach is based on adapted linear and nonlinear association measures that are more efficient than interpolation-based measures in the presence of inter-sampling time variability. Based on this new method we investigate Asian Summer Monsoon dynamics for the late Holocene, focusing on the Medieval Warm Period (MWP), the Little Ice Age (LIA), and the recent period of warming in East Asia. We find a strong Indian Summer Monsoon (ISM) influence on the East Asian Summer Monsoon during the MWP. During the cold LIA, the ISM circulation was weaker and did not extend as far east. The most recent period of warming yields network results that could indicate a currently ongoing transition phase towards a stronger ISM penetration into China. We find that we could not have come to these conclusions using visual comparison of the data and conclude that paleoclimate networks have great potential to study the variability of climate subsystems in space and time.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 10
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    Nature Publishing Group
    In:  EPIC3Scientific Reports, Nature Publishing Group, 4(4119), ISSN: 2045-2322
    Publication Date: 2019-07-17
    Description: Complex network approaches have recently been applied to continuous spatial dynamical systems, like climate, successfully uncovering the system's interaction structure. However the relationship between the underlying atmospheric or oceanic flow's dynamics and the estimated network measures have remained largely unclear. We bridge this crucial gap in a bottom-up approach and define a continuous analytical analogue of Pearson correlation networks for advection-diffusion dynamics on a background flow. Analysing complex networks of prototypical flows and from time series data of the equatorial Pacific, we find that our analytical model reproduces the most salient features of these networks and thus provides a general foundation of climate networks. The relationships we obtain between velocity field and network measures show that line-like structures of high betweenness mark transition zones in the flow rather than, as previously thought, the propagation of dynamical information.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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