Kooperativer Bibliotheksverbund

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Format: XVIII, 782 S. : graph. Darst., Kt.

ISBN: 978-1-107-01603-3

Content: Thermodynamics, Kinetics and Microphysics of Clouds presents a unified theoretical foundation that provides the basis for incorporating cloud microphysical processes in cloud and climate models. In particular, the book provides: • a theoretical basis for understanding the processes of cloud particle formation, evolution and precipitation, with emphasis on spectral cloud microphysics based on numerical and analytical solutions of the kinetic equations for the drop and crystal size spectra along with the supersaturation equation; • the latest detailed theories and parameterizations of drop and crystal nucleation suitable for cloud and climate models derived from the general principles of thermodynamics and kinetics; • a platform for advanced parameterization of clouds in weather prediction and climate models; • the scientific foundation for weather and climate modification by cloud seeding. This book will be invaluable for researchers and advanced students engaged in cloud and aerosol physics, and air pollution and climate research.

Note: Contents: Preface. - 1. Introduction. - 1.1. Relations among Thermodynamics, Kinetics, and Cloud Microphysics. - 1.2. The Correspondence Principle. - 1.3. Structure of the Book. - 2. Clouds and Their Properties. - 2.1. Cloud Classification. - 2.2. Cloud Regimes and Global Cloud Distribution. - 2.2.1. Large-Scale Condensation in Fronts and Cyclones. - 2.2.2. Sc-St Clouds and Types of Cloud-Topped Boundary Layer. - 2.2.3. Convective Cloudiness in the Intertropical Convergence Zone. - 2.2.4. Orographic Cloudiness. - 2.3. Cloud Microphysical Properties. - 2.4. Size Spectra and Moments. - 2.4.1. Inverse Power Laws. - 2.4.2. Lognormal Distributions. - 2.4.3. Algebraic Distributions. - 2.4.4. Gamma Distributions. - 2.5. Cloud Optical Properties. - Appendix A.2. Evaluation of the Integrals with Lognormal Distribution. - 3. Thermodynamic Relations. - 3.1. Thermodynamic Potentials. - 3.2. Statistical Energy Distributions. - 3.2.1. The Gibbs Distribution. - 3.2.2. The Maxwell Distribution. - 3.2.3. The Boltzmann Distribution. - 3.2.4. Bose–Einstein Statistics. - 3.2.5. Fermi–Dirac Statistics. - 3.3. Phase Rules. - 3.3.1. Bulk Phases. - 3.3.2. Systems with Curved Interfaces. - 3.4. Free Energy and Equations of State. - 3.4.1. An Ideal Gas. - 3.4.2. Free Energy and the van der Waals Equation of State for a Non-Ideal Gas. - 3.5. Thermodynamics of Solutions. - 3.6. General Phase Equilibrium Equation for Solutions. - 3.6.1. General Equilibrium Equation. - 3.6.2. The Gibbs–Duhem Relation. - 3.7. The Clausius–Clapeyron Equation. - 3.7.1. Equilibrium between Liquid and Ice Bulk Phases. - 3.7.2. Equilibrium of a Pure Water Drop with Saturated Vapor. - 3.7.3. Equilibrium of an Ice Crystal with Saturated Vapor. - 3.7.4. Humidity Variables. - 3.8. Phase Equilibrium for a Curved Interface - The Kelvin Equation. - 3.9. Solution Effects and the Köhler Equation. - 3.10. Thermodynamic Properties of Gas Mixtures and Solutions. - 3.10.1. Partial Gas Pressures in a Mixture of Gases. - 3.10.2. Equilibrium of Two Bulk Phases around a Phase Transition Point. - 3.10.3. Raoult’s Law for Solutions. - 3.10.4. Freezing Point Depression and Boiling Point Elevation. - 3.10.5. Relation of Water Activity and Freezing Point Depression. - 3.11. A diabatic Processes. - 3.11.1. Dry Adiabatic Processes. - 3.11.2. Wet Adiabatic Processes. - Appendix A.3. Calculation of Integrals with the Maxwell Distribution. - 4. Properties of Water and Aqueous Solutions. - 4.1. Properties of Water at Low Temperatures and High Pressures. - 4.1.1. Forms of Water at Low Temperatures. - 4.1.2. Forms of Water at High Pressures. - 4.2. Theories of Water. - 4.3. Temperature Ranges in Clouds and Equivalence of Pressure and Solution Effects. - 4.4. Parameterizations of Water and Ice Thermodynamic Properties. - 4.4.1. Saturated Vapor Pressures. - 4.4.2. Heat Capacity of Water and Ice. - 4.4.3. Latent Heats of Phase Transitions. - 4.4.4. Surface Tension between Water and Air or Vapor. - 4.4.5. Surface Tension between Ice and Water or Solutions. - 4.4.6. Surface Tension between Ice and Air or Vapor. - 4.4.7 Density of Water. - 4.4.8. Density of Ice. - 4.5. Heat Capacity and Einstein-Debye Thermodynamic Equations of State for Ice. - 4.6. Equations of State for Ice in Terms of Gibbs Free Energy. - 4.7. Generalized Equations of State for Fluid Water. - 4.7.1. Equations of the van der Waals Type and in Terms of Helmholtz Free Energy. - 4.7.2. Equations of State Based on the Concept of the Second Critical Point. - Appendix A.4. Relations among Various Pressure Units. - 5. Diffusion and Coagulation Growth of Drops and Crystals. - 5.1. Diffusional Growth of Individual Drops. - 5.1.1. Diffusional Growth Regime. - 5.1.2. The Kinetic Regime and Kinetic Corrections to the Growth Rate. - 5.1.3. Psychrometric Correction Due to Latent Heat Release. - 5.1.4. Radius Growth Rate. - 5.1.5. Ventilation Corrections. - 5.2. Diffusional Growth of Crystals. - 5.2.1. Mass Growth Rates. - 5.2.2. Axial Growth Rates. - 5.2.3. Ventilation Corrections. - 5.3. Equations for Water and Ice Supersaturations. - 5.3.1. General Form of Equations for Fractional Water Supersaturation. - 5.3.2. Supersaturation Relaxation Times and Their Limits. - 5.3.3. E quation for Water Supersaturation in Terms of Relaxation Times. - 5.3.4. Equivalence of Various Forms of Supersaturation Equations. - 5.3.5. Equation for Fractional Ice Supersaturation. - 5.3.6. Equilibrium Supersaturations over Water and Ice. - Liquid Clouds. - Ice Clouds. - Mixed Phase Clouds. - 5.3.7. A diabatic Lapse Rates with Non zero Supersaturations. - 5.4. The Wegener–Bergeron–Findeisen Process and Cloud Crystallization. - 5.5. Kinetic Equations of Condensation and Deposition in the Adiabatic Process. - 5.5.1. Derivation of the Kinetic Equations. - 5.5.2. Some Properties of Regular Condensation. - 5.5.3. Analytical Solution of the Kinetic Equations of Regular Condensation. - 5.5.4. Equation for the Integral Supersaturation. - 5.6. Kinetic Equations of Coagulation. - 5.6.1. Various Forms of the Coagulation Equation. - 5.6.2. Collection Kernels for Various Coagulation Processes. - Brownian Coagulation. - Gravitational Coagulation. - 5.7. Thermodynamic and Kinetic Equations for Multidimensional Models. - 5.8. Fast Algorithms for Microphysics Modules in Multidimensional Models. - 6. Wet Aerosol Processes. - 6.1. Introduction. - 6.1.1. Empirical Parameterizations of Hygroscopic Growth. - 6.1.2. Empirical Parameterizations of Droplet Activation. - 6.2. Equilibrium Radii. - 6.2.1. Equilibrium Radii at Subsaturation. - 6.2.2. Equilibrium Radii of Interstitial Aerosol in a Cloud. - 6.3. Critical Radius and Supersaturation. - 6.4. Aerosol Size Spectra. - 6.4.1. Lognormal and Inverse Power Law Size Spectra. - 6.4.2. Approximation of the Lognormal Size Spectra by the Inverse Power Law. - 6.4.3. Examples of the Lognormal Size Spectra, Inverse Power Law, and Power Indices. - 6.4.4. Algebraic Approximation of the Lognormal Distribution. - 6.5. Transformation of the Size Spectra of Wet Aerosol at Varying Humidity. - 6.5.1. Arbitrary Initial Spectrum of Dry Aerosol. - 6.5.2. Lognormal Initial Spectrum of Dry Aerosol. - 6.5.3. Inverse Power Law Spectrum. - 6.5.4. Algebraic Size Spectra. - 6.6. CCN Differential Supersaturation Activity Spectrum. - 6.6.1. A rbitrary Dry Aerosol Size Spectrum. - 6.6.2. Lognormal Activity Spectrum. - 6.6.3. Algebraic Activity Spectrum. - 6.7. Droplet Concentration and the Modified Power Law for Drops Activation. - 6.7.1. Lognormal and Algebraic CCN Spectra. - 6.7.2. Modified Power Law for the Drop Concentration. - 6.7.3. Supersaturation Dependence of Power Law Parameters. - Appendix A.6. Solutions of Cubic Equations for Equilibrium and Critical Radii. - 7. Activation of Cloud Condensation Nuclei into Cloud Drops. - 7.1. Introduction. - 7.2. Integral Supersaturation in Liquid Clouds with Drop Activation. - 7.3. Analytical Solutions to the Supersaturation Equation. - 7.4. Analytical Solutions for the Activation Time, Maximum Supersaturation, and Drop Concentration. - 7.5. Calculations of CCN Activation Kinetics. - 7.6. Four Analytical Limits of Solution. - 7.7. Limit #1: Small Vertical Velocity, Diffusional Growth Regime. - 7.7.1. Lower Bound. - 7.7.2. Upper Bound. - 7.7.3. Comparison with Twomey’s Power Law. - 7.8. Limit #2: Small Vertical Velocity, Kinetic Growth Regime. - 7.8.1. Lower Bound. - 7.8.2. Upper Bound. - 7.9. Limit #3: Large Vertical Velocity, Diffusional Growth Regime. - 7.9.1. Lower Bound. - 7.9.2. Upper Bound. - 7.10. Limit #4: Large Vertical Velocity, Kinetic Growth Regime. - 7.10.1. Lower Bound. - 7.10.2. Upper Bound. - 7.11. Interpolation Equations and Comparison with Exact Solutions. - Appendix A.7. Evaluation of the Integrals J2 and J3 for Four Limiting Cases. - 8. Homogeneous Nucleation. - 8.1. Metastable States and Nucleation of a New Phase. - 8.2. Nucleation Rates for Condensation and Deposition. - 8.2.1. Application of Boltzmann Statistics. - 8.2.2. The Fokker–Planck

Language: English

UID:

Format: x, 352 Seiten , Illustrationen

ISBN: 978-1-4757-2292-5

Content: Frozen Ground Engineering first introduces the reader to the frozen environment and the behavior of frozen soil as an engineering material. In subsequent chapters this information is used in the analysis and design of ground support systems, foundations, and embankments. These and other topics make this book suitable for use by civil engineering students in a one-semester course on frozen ground engineering at the senior or first-year-graduate level. Students are assumed to have a working knowledge of undergraduate mechanics (statics and mechanics of materials) and geotechnical engineering (usual two-course sequence). A knowledge of basic geology would be helpful but is not essential. This book will also be useful to advanced students in other disciplines and to engineers who desire an introduction to frozen ground engineering or references to selected technical publications in the field. BACKGROUND Frozen ground engineering has developed rapidly in the past several decades under the pressure of necessity. As practical problems involving frozen soils broadened in scope, the inadequacy of earlier methods for coping became increasingly apparent. The application of ground freezing to geotechnical projects throughout the world continues to grow as significant advances have been made in ground freezing technology. Freezing is a useful and versatile technique for temporary earth support, groundwater control in difficult soil or rock strata, and the formation of subsurface containment barriers suitable for use in groundwater remediation projects.

Note: Contents PREFACE CHAPTER 1. FROZEN GROUND 1.1 Frozen ground support systems Frozen earth wall Design considerations 1.2 Seasonally and perennially frozen ground Cold regions: definition Subsurface temperatures Active layer, Permafrost 1.3 Terrain features in permafrost areas Ground ice features Patterned ground 1.4 Engineering considerations Freezing process Thawing of frozen ground Frost action Useful aspects of frozen ground Ice as a construction material Problems CHAPTER 2. PHYSICAL AND THERMAL PROPERTIES 2.1 Composition and structure of frozen ground Soil types Phase relationships Ice phase Particle size and size distribution Consistency of cohesive soils 2.2 Soil classification Unified soil classification system Frozen soil classification 2.3 Water-ice phase relationships Unfrozen water in frozen soil Effect of solutes on freezing 2.4 Soil frost action Frost action process Frost susceptibility of soils Frost-heave forces Freeze-thaw effects on permeability 2.5 Thermal properties Thermal conductivity Heat capacity Thermal diffusiuity Latent heat of fusion Thermal expansion (or contraction) Problems CHAPTER 3. HEAT FLOW IN SOILS 3.1 Heat transfer at the ground surface Climatic factors Freezing (or thawing) indices Surface n-factor 3.2 Seasonal ground freezing (or thawing) Frost depth Thawing of frozen soil Design implications 3.3 Temperature below cooled (or heated) areas Steady state heat flow Transient temperatures Periodic heat flow 3.4 Thermal analysis: frozen ground support systems Single freeze pipe Wall formation Multiple rows of freeze pipes Problems CHAPTER 4. THAW BEHAVIOR OF FROZEN GROUND 4.1 Thaw settlement 4.2 Consolidation of thawing soils Thaw consolidation Residual stress in thawing soils 4.3 Thaw-consolidation in some layered systems Two layer soil problems Compressible soil ouer discrete ice layers Problems CHAPTER 5. MECHANICAL PROPERTIES OF FROZEN SOILS 5.1 Stress-strain-time and strength behavior Hydrostatic pressure effect on frozen soil behavior Shear stress effect on frozen soil behavior 5.2 Factors influencing creep and strength Creep of frozen soil under constant stress Stress-strain behavior under constant strain rate Ice content effect on strength Normal pressure effect on strength Strain rate effect on strength Temperature effect on strength Frozen soil behauior at cryogenic temperatures 5.3 Analytical representation of creep and strength data General creep equation Strength of frozen soils Comparison with Vyalou's creep and strength equations Normal pressure effect on creep and strength Salinity effect on frozen soil creep and strength 5.4 Frozen soil behavior in uniaxial tension 5.5 Deformability of frozen soils 5.6 Compressibility of frozen soils Problems CHAPTER 6. CONSTRUCTION GROUND FREEZING 6.1 Design considerations Ground freezing applications Soil conditions Groundwater flow Ground movement 6.2 Freezing methods and system installation Primary plant and pumped loop secondary coolant Expendable liquid refrigerant Installation of the cooling system 6.3 Structural design of frozen earth walls Curved walls Straight walls and combinations Tunnels Finite-element method 6.4 Monitoring requirements Freeze hole deviation Temperature Frost boundary location and wall thickness 6.5 Other construction considerations Protection of exposed frozen earth Concrete placement against frozen earth Problems CHAPTER 7. FOUNDATIONS IN FROZEN SOILS 7.1 General considerations Foundations in seasonally frozen ground Foundations in permafrost 7.2 Shallow foundations Selection of foundation method Design of shallow foundations Bearing capacity Settlement considerations 7.3 Pile foundations Pile types Pile placement Pile freezeback Axially loaded piles Laterally loaded piles Anchors in frozen ground 7.4 Frost-heave forces on foundations Tangential forces on a vertical surface Design for frost heave Problems CHAPTER 8. STABILITY OF SOIL MASSES IN COLD REGIONS 8.1 Landslides in permafrost: classification 8.2 Slopes in thawing permafrost Low-angle planar flows Slides 8.3 Slopes in frozen soils 8.4 Slope stabilization methods Construction and design techniques Stabilization of planar slides Stabilization of cut slopes Problems CHAPTER 9. EARTHWORK IN COLD REGIONS 9.1 Site considerations Drainage Thermal and frost action factors Subsurface conditions Material sources 9.2 Excavation and transport Mechanical excavation Drilling and blasting Thawing frozen soil Hydraulic dredging 9.3 Field placement Compaction Placement in water 9.4 Water-retaining embankments on permafrost Unfrozen embankments Frozen embankments Maintaining the frozen state Thermal and stability considerations 9.5 Embankment performance Frost heave Settlement Stability Artificial islands CHAPTER 10. FIELD INVESTIGATIONS 10.1. Sampling frozen ground Sampling methods Sample protection 10.2 Ground-temperature measurement Temperature sensors and measuring equipment 10.3 Field testing of frozen soils Field test methods Pressuremeter test Deep static cone penetration test Other types of field tests 10.4 Geophysical methods Seismic velocities in frozen ground Electrical properties of frozen ground Geophysical techniques used in frozen ground High-frequency electrical methods Borehole logging in permafrost APPENDIX A. SYMBOLS APPENDIX B. SI UNITS APPENDIX C LABORATORY AND FIELD TESTS ON FROZEN SOILS C1 Handling, storage, and machining of specimens prior to testing C2 Uniaxial compression test C3 Uniaxial tensile test C.4 Salinity of soil pore water C5 Thermosiphon C6 Pile load test in permafrost REFERENCES AUTHOR INDEX SUBJECT INDEX

Language: English

Keywords: Einführung

UID:

Format: xxxiii, 613 Seiten , Illustrationen , 42 mm x 170 mm

Edition: Second edition

ISBN: 978-3-642-13918-0

Series Statement: Springer praxis books environmental sciences

Note: Contents Preface Preface to the First Edition List of figures Abbreviations 1 Historical perspective (Roland A. Madden and Paul R. Julian) 1.1 Introduction 1.2 The intraseasonal, tropospheric oscillation 1.3 The elementary 4-D structure 1.4 Other early studies of the oscillation 1.5 The oscillation in 1979 1.6 Complexity of cloud movement and structure 1.7 Seasonal variations in the oscillation 1.8 The oscillation in the zonal average 1.9 Other effects of the oscillation 1.10 Summary 1.11 References 2 South Asian monsoon (B. N. Goswami) 2.1 Introduction 2.1.1 South Asian summer monsoon and active/break cycles 2.1.2 Amplitude and temporal and spatial scales 2.1.3 Regional propagation characteristics 2.1.4 Relationship between poleward-propagating ISOs and monsoon onset 2.1.5 Relationship with the MJO 2.2 Mechanism for temporal-scale selection and propagation 2.2.1 30 to 60-day mode 2.2.2 10 to 20-day mode 2.3 Air-sea interactions 2.4 Clustering of synoptic events by ISOs 2.5 Monsoon ISOs and predictability of the seasonal mean 2.6 Aerosols and monsoon ISOs 2.7 Predictability and prediction of monsoon ISOs 2.8 Summary and discussion 2.9 Acknowledgments 2.10 Appendix 2.11 References 3 Intraseasonal variability of the atmosphere-ocean-climate system: East Asian monsoon (Huang-Hsiung Hsu) 3.1 Introduction 3.2 General characteristics of EA/WNP monsoon flow 3.3 Periodicity, seasonality, and regionality 3.4 Intraseasonal oscillation propagation tendency 3.5 Relationship with monsoon onsets and breaks 3.6 The 10 to 30-day and 30 to 60-day boreal summer ISO 3.6.1 The 30 to 60-day northward/northwestward-propagating pattern 3.6.2 The 10 to 30-day westward-propagating pattern 3.7 Relationship with tropical cyclone activity 3.8 Upscale effect of TC and synoptic systems 3.9 Final remarks 3.9.1 Close association with the EA/WNP monsoon 3.9.2 The CISO vs. interannual variability 3.9.3 Multiperiodicities and multiscale interaction 3.9.4 Others 3.10 References 4 Pan America (Kingtse C. Mo, Charles Jones, and Julia Nogues Paegle) 4.1 Introduction 4.2 Variations in the IS band 4.3 IS variability in December-March 4.3.1 EOF modes 4.3.2 The Madden Julian Oscillation 4.3.3 The submonthly oscillation 4.4 IS variability in June-September 4.4.1 EOF modes 4.4.2 Madden-Julian Oscillation 4.4.3 Submonthly oscillation 4.5 Intraseasonal modulation of hurricanes 4.6 Summary 4.7 References 5 Australasian monsoon (M. C. Wheeler and J. L. McBride) 5.1 Introduction 5.2 Seasonal cycle of background flow 5.3 Broadband intraseasonal behavior: Bursts and breaks 5.4 Broadband intraseasonal behavior: Spectral analysis 5.5 Meteorology of the bursts and breaks 5.6 Characteristics and influence of the MJO 5.7 1983/1984 and 1987/1988 case studies 5.8 MJO influence on monsoon onset 5.9 Other modes and sources of ISV 5.10 Modulation of tropical cyclones 5.11 Extratropical-tropical interaction 5.12 Prediction 5.13 Conclusions 5.14 References 6 The oceans (William S. Kessler) 6.1 Introduction 6.2 Heat fluxes 6.2.1 Salinity and the barrier layer 6.2.2 A 1-D heat balance? 6.2.3 The role of advection 6.3 Vertical structure under westerly winds 6.4 Remote signatures of wind-forced Kelvin waves 6.5 El Nino and rectification of ISV 6.6 ISV in the Indian Ocean 6.6.1 Differences between the Indian and Pacific Ocean warm pools and their consequences 6.6.2 Oscillations lasting about 60 days in the western equatorial Indian Ocean 6.6.3 Recent models of wind-forced ISV in the Indian Ocean 6.7 Other intrinsic oceanic ISV 6.7.1 Global ISV 6.7.2 Non-TISO-forced ISV in the tropical Indo-Pacific 6.7.3 ISV outside the equatorial Indo-Pacific 6.8 Conclusion 6.9 References 7 Air-sea interaction (Harry Hendori) 7.1 Introduction 7.2 Air-sea fluxes for the eastward MJO 7.3 Air-sea fluxes associated with northward propagation in the Indian summer monsoon 7.4 SST variability 7.5 Mechanisms of SST variability 7.6 SST-atmosphere feedback 7.7 Impact of slow SST variations on MJO activity 7.8 Concluding remarks 7.9 Acknowledgments 7.10 References 8 Mass, momentum, and geodynamics (Benjamin F. Chao and David A. Salstein) 8.1 Introduction 8.2 Angular momentum variations and Earth rotation 8.2.1 Length-of-day variation and axial angular momentum 8.2.2 Polar motion excitation and equatorial angular momentum 8.2.3 Angular momentum and torques 8.3 Time-variable gravity 8.4 Geocenter motion 8.5 Conclusions 8.6 Acknowledgments 8.7 References 9 El Nino Southern Oscillation connection (William K. M. Lau) 9.1 Introduction 9.2 A historical perspective 9.3 Phase 1: The embryonic stage 9.3.1 OLR time-longitude sections 9.3.2 Seasonality 9.3.3 Supercloud clusters 9.3.4 Early modeling framework 9.4 Phase 2: The exploratory stage 9.4.1 MJO and ENSO interactions 9.4.2 WWEs 9.5 Phase 3: ENSO case studies 9.5.1 El Nino of 1997/1998 9.5.2 Stochastic forcings 9.6 Phase-4: Recent development 9.6.1 A new ISO index 9.6.2 Composite events 9.6.3 The ISV-ENSO biennial rhythm 9.7 TISV and predictability 9.8 Acknowledgments 9.9 References 10 Theories (Bin Wang) 10.1 Introduction 10.2 Review of ISO theories 10.2.1 Wave CISK 10.2.2 Wind-evaporation feedback or WISHE 10.2.3 Frictional convergence instability (FCI) 10.2.4 Cloud-radiation feedback 10.2.5 Convection-water vapor feedback and the moisture mode 10.2.6 Multiscale interaction theory 10.2.7 Mechanisms of the boreal summer intraseasonal oscillation 10.2.8 Atmosphere-ocean interaction 10.3 A general theoretical framework 10.3.1 Fundamental physical processes 10.3.2 Governing equations 10.3.3 Boundary layer dynamics near the equator 10.3.4 The 1.5-layer model for the MJO 10.3.5 The 2.5-layer model including the effects of basic flows 10.4 Dynamics of the MJO 10.4.1 Low-frequency equatorial waves and the associated Ekman pumping 10.4.2 Frictional convergence instability (FCI) 10.4.3 FCI mode under nonlinear heating 10.4.4 The role of multiscale interaction (MSI) in MJO dynamics 10.5 Dynamics of boreal summer ISO 10.5.1 Effects of mean flows on the ISO 10.5.2 Mechanism of northward propagation 10.6 Role played by atmospheric-ocean interaction 10.7 Summary and discussion 10.7.1 Understanding gained from the FCI theory 10.7.2 Model limitations 10.7.3 Outstanding issues 10.8 Acknowledgments 10.9 References 11 Modeling intraseasonal variability (K. R. Sperber, J. M. Slingo, and P. M. Inness) 11.1 Introduction 11.2 Modeling the MJO in boreal winter 11.2.1 Interannual and decadal variability of the MJO 11.2.2 Sensitivity to formulation of the atmospheric model 11.2.3 Modeling the MJO as a coupled ocean-atmosphere phenomenon 11.3 Boreal summer intraseasonal variability 11.3.1 GCM simulations 11.3.2 Air-sea interaction and boreal summer intraseasonal variability 11.3.3 Modeling studies of the links between boreal summer intraseasonal and interannual variability 11.4 The impact of vertical resolution in the upper ocean 11.5 Concluding remarks 11.6 Acknowledgments 11.7 References 12 Predictability and forecasting (Duane Waliser) 12.1 Introduction 12.2 Empirical models 12.3 Dynamical forecast models 12.4 Predictability 12.5 Real time forecasts 12.6 Discussion 12.7 Appendix 12.8 Acknowledgments 12.9 References 13 Africa and West Asia (Mathew Barlow) 13.1 Overview 13.2 Summary of Africa research 13.2.1 West Africa 13.2.2 Eastern Africa 13.2.3 Southern Africa 13.3 Summary of West Asia research 13.4 Station data analysis 13.4.1 Methodology and data 13.4.2 Nairobi 13.4.3 Riyadh 13.5 Relevance of Gill-Matsuno dynamics and the role of mean wind 13.6 Summary and discussion 13.7 References 14 Tropical-extratropical interactions (Paul E. Roundy) 14.1 Introduction 14.2 A boreal winter composite of the global flow associated with the MJO 14.3 Response of the global atmosphere to heating in tropical convection 14.4 Influence of extratropical waves on tropical convection 14.5 Two-way interactions between the tropics and extratropics 14.6 MJO inf

Language: English

Keywords: Aufsatzsammlung

URL: https://d-nb.info/1002680328/04

UID:

Format: XIII, 199 S. , Ill., graph. Darst.

ISBN: 978-3-319-14600-3

Content: The book offers a modern, comprehensive, and holistic view of natural gas seepage, defined as the visible or invisible flow of gaseous hydrocarbons from subsurface sources to Earth’s surface. Beginning with definitions, classifications for onshore and offshore seepage, and fundamentals on gas migration mechanisms, the book reports the latest findings for the global distribution of gas seepage and describes detection methods. Seepage implications are discussed in relation to petroleum exploration, environmental impacts (hazards, pollution, atmospheric emissions, and past climate change), emerging scientific issues (abiotic gas and methane on Mars), and the role of seeps in ancient cultures. With an updated bibliography and an integrated analysis of available data, the book offers a new fundamental awareness - gas seepage is more widespread than previously thought and influences all of Earth’s external “spheres”, including the hydrosphere, atmosphere, biosphere, and anthroposphere.

Note: Contents: 1 Introduction. - 1.1 Basic Concepts and Definitions. - 1.1.1 What Gas Seepage Is, What It Is Not. - 1.1.2 A Jungle of Names: Seeps, Macroseeps, Microseepage, Microseeps, and Miniseepage. - 1.1.3 Seepage id est Migration. - 1.1.4 Microbial, Thermogenic, and Abiotic Methane. - 1.2 Significance of Seepage and Implications. - 1.2.1 Seepage and Petroleum Exploration. - 1.2.2 Marine Seepage on the Crest of the Wave. - 1.2.3 From Sea to Land. - 1.2.4 A New Vision. - References. - 2 Gas Seepage Classification and Global Distribution. - 2.1 Macro-Seeps. - 2.1.1 Gas Seeps. - 2.1.2 Oil Seeps. - 2.1.3 Gas-Bearing Springs. - 2.1.4 Mud Volcanoes. - 2.1.5 Miniseepage. - 2.1.6 The Global Distribution of Onshore Macro-Seeps. - 2.2 Microseepage. - 2.3 Marine Seepage Manifestations. - References. - 3 Gas Migration Mechanisms. - 3.1 Fundamentals. - 3.1.1 Sources and Pathways. - 3.1.2 Diffusion and Advection. - 3.2 Actual Mechanisms and Migration Forms. - 3.2.1 Bubble and Microbubble Flow. - 3.2.2 Gas Seepage Velocity. - 3.2.3 Matter Transport by Microbubbles. - 3.2.4 The Concept of Carrier Gas and Trace Gas. - References. - 4 Detecting and Measuring Gas Seepage. - 4.1 Gas Detection Methods. - 4.1.1 Above-Ground (Atmospheric) Measurements. - 4.1.2 Ground Measurements. - 4.1.3 Measurements in Aqueous Systems. - 4.2 Indirect Methods. - 4.2.1 Chemical-Mineralogical Alterations of Soils. - 4.2.2 Vegetation Changes (Geobotanical Anomalies). - 4.2.3 Microbiological Analyses of Soils. - 4.2.4 Radiometric Surveys. - 4.2.5 Geophysical Techniques. - References. - 5 Seepage in Field Geology and Petroleum Exploration. - 5.1 Seepage and Faults. - 5.2 Microseepage Applied to Areal Petroleum Exploration. - 5.2.1 Which Gas Can Be Measured?. - 5.2.2 Microseepage Methane Flux Measurements. - 5.3 Seep Geochemistry for Petroleum System Evaluation. - 5.3.1 Recognising Post-genetic Alterations of Gases. - 5.3.2 Assessing Gas Source Type and Maturity. - 5.3.3 The Presence of Undesirable Gases (CO2, H2S, N2). - 5.3.4 Helium in Seeps… for Connoisseurs. - References. - 6 Environmental Impact of Gas Seepage. - 6.1 Geohazards. - 6.1.1 Methane Explosiveness. - 6.1.2 The Toxicity of Hydrogen Sulphide. - 6.1.3 Mud Expulsions and the Degradation of Soil-Sediments. - 6.2 Stray Gas, Natural versus Man-Made. - 6.3 Hypoxia in Aquatic Environments. - 6.4 Gas Emissions to the Atmosphere. - 6.4.1 Methane Fluxes and the Global Atmospheric Budget. - 6.4.2 Ethane and Propane Seepage, a Forgotten Potential Source of Ozone Precursors. - 6.5 Natural Seepage and CO2 Geological Sequestration. - References. - 7 Seepage in Serpentinised Peridotites and on Mars. - 7.1 Seeps and Springs in Active Serpentinisation Systems. - 7.1.1 Where Abiotic Methane Is Seeping. - 7.1.2 How Abiotic Methane in Land-Based Serpentinisation Systems Is Formed. - 7.1.3 How to Distinguish Abiotic and Biotic Methane. - 7.1.4 Seepage to the Surface. - 7.1.5 Is Abiotic Gas Seepage Important for the Atmospheric Methane Budget?. - 7.2 Potential Methane Seepage on Mars. - 7.2.1 Looking for Methane on Mars. - 7.2.2 A Theoretical Martian Seepage. - References. - 8 Gas Seepage and Past Climate Change. - 8.1 Past Seepage Stronger than Today. - 8.2 Potential Proxies of Past Seepage. - 8.3 Methane and Quaternary Climate Change. - 8.3.1 Traditional Models: Wetlands versus Gas Hydrates. - 8.3.2 Adding Submarine Seeps. - 8.3.3 Considering Onshore and Offshore Seepage in Total. - 8.3.4 CH4 Isotope Signatures in Ice Cores. - 8.4 Longer Geological Time Scale Changes. - 8.4.1 The Concept of Sedimentary Organic Carbon Mobilization. - 8.4.2 Paleogene Changes. - References. - 9 Seeps in the Ancient World: Myths, Religions, and Social Development. - 9.1 Seeps in Mythology and Religion. - 9.2 Seeps in Social and Technological Development. - References. - Epilogue. - Index.

Language: English