ALBERT

Note: N.F. entfällt ab 57.2000. - Volltext auch als Teil einer Datenbank verfügbar , Ersch. ab 2000 in engl. Sprache mit dt. Hauptsacht.

Note: Teilw. in kyrill. Schr.

Note: Teilw. in kyrill. Schr.

Note: Contents List of contributors Preface Introduction Guidelines and codes of conduct for Arctic tourism: implementation and evaluation of an operator program / Margaret E. Johnston and David G. Twynam Drafting tourism codes for the Arctic / Peter Mason The importance of an overall visitor education program - experiences with tour operators in the Antarctic / Debra J. Enzenbacher Mechanisms for promoting and monitoring compliance with Arctic tourism guidelines / Debra J. Enzenbacher Polar ship-borne tourism: do guidelines and codes of conduct work? / Bernard Stonehouse The conservation perspective on Antarctic tourism / Cassandra Phillips Tourism regulation - cultural norms or legislation? Outdoor life and tourism regulation in Finnmark and on Svalbard / Arvid Viken Opportunities and problems associated with the development of Arctic tourism: a case study from Svalbard / Reidar Hindrum Mechanisms and organisational structures for implementing Arctic tourism guidelines / Tutta May Endresen Report on the IUCN and tourism-related activities in the Arctic / Jeanne Pagnan Planning for ecotourism in Kangerlussuaq - Søndre Strømfjord, Greenland / Jeppe Mordhorst Whale-watching guidelines: a special case / Cassandra Phillips Guidelines for whale-watching in Norway / Tiu Similä The frame conditions for ecologically acceptable tourism and its guidelines on Svalbard / Andreas Umbreit Appendices

Note: CONTENTS: Preface page. - Conventions and Notation. - Chapter 1. The Physical Properties of Fluids. - 1.1 Solids, liquids and gases. - 1.2 The continuum hypothesis. - 1.3 Volume forces and surface forces acting on a fluid. - Representation of surface forces by the stress tensor. - The stress tensor in a fluid at rest. - 1.4 Mechanical equilibrium of a fluid. - A body 'floating' in fluid at rest. - Fluid at rest under gravity. - 1.5 Classical thermodynamics. - 1.6 Transport phenomena. - The linear relation between flux and the gradient of a scalar intensity. - The equations for diffusion and heat conduction in isotropic media at rest, Molecular transport of momentum in a fluid. - 1.7 The distinctive properties of gases. - A perfect gas in equilibrium. - Departures from the perfect-gas laws. - Transport coefficients in a perfect gas. - Other manifestations of departure from equilibrium of a perfect gas. - 1.8 The distinctive properties of liquids. - Equilibrium properties. - Transport coefficients. - 1.9 Conditions at a boundary between two media. - Surface tension. - Equilibrium shape of a boundary between two stationary fluids. - Transition relations at a material boundary. - Chapter 2. Kinematics of the Flow Field. - 2.1 Specification of the flow field. - Differentiation following the motion of the fluid. - 2.2 Conservation of mass. - Use of a stream function to satisfy the mass-conservation equation. - 2.3 Analysis of the relative motion near a point. - Simple shearing motion. - 2.4 Expression for the velocity distribution with specified rate of expansion and vorticity. - 2.5 Singularities in the rate of expansion. Sources and sinks. - 2.6 The vorticity distribution. - Line vortices. - Sheet vortices. - 2.7 Velocity distributions with zero rate of expansion and zero vorticity. - Conditions for Δϕ to be determined uniquely. - lrrotational solenoidal flow near a stagnation point. - The complex potential for irrotational solenoidal flow in two dimensions. - 2.8 Irrotational solenoidal flow in doubly-connected regions of space. - Conditions for Δϕ to be determined uniquely. - 2.9 Three-dimensional flow fields extending to infinity. - Asymptotic expressions for ue and uv. - The behaviour of ϕ at large distances. - Conditions for Δϕ to be determined uniquely. - The expression of ϕ as a power series. - Irrotational solenoidal flow due to a rigid body in translational motion. - 2.10 Two-dimensional flow fields extending to infinity. - lrrotational solenoidal flow due to a rigid body in translational motion. - Chapter 3. Equations Governing the Motion of a Fluid. - 3.1 Material integrals in a moving fluid. - Rates of change of material integrals. - Conservation laws for a fluid in motion. - 3.2 The equation of motion. - Use of the momentum equation in integral form. - Equation of motion relative to moving axes. - 3.3 The expression for the stress tensor. - Mechanical definition of pressure in a moving fluid. - The relation between deviatoric stress and rate-of-strain for a Newtonian fluid. - The Navier-Stokes equation. - Conditions on the velocity and stress at a material boundary. - 3.4 Changes in the internal energy of a fluid in motion. - 3.5 Bernoulli's theorem for steady flow of a frictionless non-conducting fluid. - Special forms of Bemoulli's theorem. - Constancy of H across a transition region in one-dimensional steady flow. - 3.6 The complete set of equations governing fluid flow. - Isentropic flow. - Conditions for the velocity distribution to be approximately solenoidal. - 3.7 Concluding remarks to chapters 1, 2 and 3. - Chapter 4. Flow of a Uniform Incompressible Viscous Fluid. - 4.1 Introduction. - Modification of the pressure to allow for the effect of the body force. - 4.2 Steady unidirectional flow. - Poiseuille flow. - Tubes of non-circular cross-section. - Two-dimensional flow. - A model of a paint-brush. - A remark on stability. - 4.3 Unsteady unidirectional flow. - The smoothing-out of a discontinuity in velocity at a plane. - Plane boundary moved suddenly in a fluid at rest. - One rigid boundary moved suddenly and one held stationary. - Flow due to an oscillating plane boundary. - Starting flow in a pipe. - 4.4 The Ekman layer at a boundary in a rotating fluid. - The layer at a free surface. - The layer at a rigid plane boundary. - 4.5 Flow with circular streamlines. - 4.6 The steady jet from a point source of momentum. - 4.7 Dynamical similarity and the Reynolds number. - Other dimensionless parameters having dynamical significance. - 4.8 Flow fields in which inertia forces are negligible. - Flow in slowly-varying channels. - Lubrication theory. - The Hele-Shaw cell. - Percolation through porous media. - Two-dimensional flow in a corner. - Uniqueness and minimum dissipation theorems. - 4.9 Flow due to a moving body at small Reynolds number. - A rigid sphere. - A spherical drop of a different fluid. - A body of arbitrary shape. - 4.10 Oseen's improvement of the equation for flow due to moving bodies at small Reynolds number. - A rigid sphere. - A rigid circular cylinder. - 4.11 The viscosity of a dilute suspension of small particles. - The flow due to a sphere embedded in a pure straining motion. - The increased rate of dissipation in an incompressible suspension. - The effective expansion viscosity of a liquid containing gas bubbles. - 4.12 Changes in the flow due to moving bodies as R increases from 1 to about 100. - Chapter 5. Flow at Large Reynolds Number: Effects of Viscosity. - 5.1 Introduction. - 5.2 Vorticity dynamics. - The intensification of vorticity by extension of vortex-lines. - 5.3 Kelvin's circulation theorem and vorticity laws for an inviscid fluid. - The persistence of irrotationality. - 5.4 The source of vorticity in motions generated from rest. - 5.5 Steady flows in which vorticity generated at a solid surface is prevented by convection from diffusing far away from it. - (a) Flow along plane and circular walls with suction through the wall. - (b) Flow toward a 'stagnation point' at a rigid boundary. - (c) Centrifugal flow due to a rotating disk. - 5.6 Steady two-dimensional flow in a converging or diverging channel. - Purely convergent flow. - Purely divergent flow. - Solutions showing both outflow and inflow. - 5.7 Boundary layers. - 5.8 The boundary layer on a flat plate. - 5.9 The effects of acceleration and deceleration of the external stream. - The similarity solution for an external stream velocity proportional to x^m. - Calculation of the steady boundary layer on a body moving through fluid. - Growth of the boundary layer in initially irrotational flow. - 5.10 Separation of the boundary layer. - 5.11 The flow due to bodies moving steadily through fluid. - Flow without separation. - Flow with separation. - 5.12 Jets, free shear layers and wakes. - Narrow jets. - Free shear layers. - Wakes. - 5.13 Oscillatory boundary layers. - The damping force on an oscillating body. - Steady streaming due to an oscillatory boundary layer. - Applications of the theory of steady streaming. - 5.14 Flow systems with a free surface page. - The boundary layer at a free surface. - The drag on a spherical gas bubble rising steadily through liquid. - The attenuation of gravity waves. - 5.15 Examples of use of the momentum theorem. - The force on a regular array of bodies in a stream. - The effect of a sudden enlargement of a pipe. - Chapter 6. Irrotational Flow Theory and its Applications. - 6.1 The role of the theory of flow of an inviscid fluid. - 6.2 General properties of irrotational flow. - Integration of the equation of motion. - Expressions for the kinetic energy in terms of surface integrals. - Kelvin's minimum energy theorem. - Positions of a maximum of q and a minimum of p. - Local variation of the velocity magnitude. - 6.3 Steady flow : some applications of Bernoulli's theorem and the momentum theorem. - Efflux from a circular orifice in an open vessel. - Flow over a weir. - Jet of liquid impinging on a plane wall. - lrro

Note: Table of contents 1. Introduction: Perceptions of weather and climate 1.1 Meteorology and/or climatology? 1.2 Perceptions of reality: schools of thought 1.3 Inadequacies in schools of thought, and associated problems 1.4 The approach ofthis book Part I GENERAL CIRCULATION IN THE TROPOSPHERE 2. Radiation 2.1 Processes of radiation 2.2 The greenhouse effect 2.3 The shape and motions of the Earth 2.4 The geographical factor 2.5 Conclusion 3. Circulation in the lower layers of the troposphere 3.1 Circulation in high and mid-latitudes: MPHs Perception of circulation in high and mid-latitudes The existence of mobile anticyclones Mobile Polar Highs (MPHs) The polar thermal deficit The birth of MPHs MPH trajectories The MPH-associated wind field 3.2 Anticyclonic agglutinations (AAs) A look at the so-called "subtropical" high-pressure areas Meridional transport by MPHs and anticyclonic agglutination (AA) Oceanic and continental anticyclonic agglutinations 3.3 Tropical circulation A look at tropical circulation Pressure and wind fields over the tropics The trade wind Trade winds The monsoon Monsoons 4. General circulation 4.1 General circulation: evolution of ideas 4.2 Areas of circulation in the lower layers 4.3 General circulation in the troposphere The mean tropospheric picture Seasonal variation in circulation Aerological stratification 4.4 Zonal "Walker" circulation: myth or reality? 4.5 General circulation: conclusion Part II DYNAMICS OF THE WEATHER: PERTURBATIONS 5. Pluviogenesis 5.1 Precipitation potential 5.2 Origin of an updraft The thermal factor The dynamical factor 5.3 Structuralconditions 6. Dynamics of weather in polar and temperate regions: MPHs 6.1 Perception of the "perturbed field" in high and mid-latitudes 6.2 The MPH: pressure field and wind field 6.3 Weather associated with an MPH 6.4 MPHs and the ''polar front" 6.5 Interactions between MPHs 6.6 Dynamics of weather in North America 6.7 Dynamics of weather in France MPHs and relief Winter dynamics Summer dynamics 6.8 Dynamics of weather in temperate and polar regions: conclusion 7. MPHs at tropical margins 7.1 The temperate-tropical boundary 7.2 Mechanisms 7.3 North and Central America 7.4 South America 7.5 Nmthern Africa, Arabia and India 7.6 Southern Africa 7.7 Eastern Asia 7.8 Australia 7.9 Conclusion 8. Pulses in trades and monsoons 8 1 Trade winds and "easterly waves" 8.2 Vertical structure of the trades 8.3 Pulses in the trades Maritime trades The continental trade wind 8.4 Pulses in the monsoon 9. The meteorological equator 9.1 The meteorological equator: the evolution of a concept 9.2 The inclined meteorological equator (IME) 9.3 IME activity: squall line.s (SL) 9.4 The vertical meteorological equator (VME) 9.5 The meteorological equator over continents: IME and VME 10. Tropical cyclones 10.1 Cyclone structure and associated weather 10.2 Conditions for cyclogenesis 10.3 The geography of tropical cyclones Part III DYNAMICS OF CLIMATE: CLIMATIC EVOLUTION The global climatic system 11. Causes of climatic variations 11.1 Variations in solar activity The sunspot cycle Solar activity and climate 11.2 Orbital parameters of radiation Variation of the Earth-Sun distance, or eccentricity of the Earth's orbit Variation of the angle of inclination of the Earth's polar axis Variation of the direction of the polar axis, or precession of the equinoxes Orbital parameters and climatic evolution 11.3 Volcanism and climate Volcanic emissions and ejecta (silicates and sulphates) Optical radiative and thermal effects 11.4 The anthropic greenhouse effect The anthropic greenhouse effect: predictions from models Predictions and observations Recent climatic change does not conform to the "greenhouse effect"scenario Conclusion on the causes of climatic change 12. Palaeoclimatic variations and modes of general circulation 12.1 A Palaeoenvironments in Africa Present-day dynamics of climate in Africa The palaeoenvironment of Africa at the time of the LGM (18- 15 kyr BP) The palaeoenvironment of Africa at the time of the HCO (9-6 kyr BP) Palaeometeorological interpretation 12.2 Variations in insolation and in modes of general circulation Variations in insolation at high latitudes Rapid general circulation Slow general circulation Glaciation and deglaciation Palaeocirculations over Africa Circulation at the time of the Last Glacial Maximum Circulation at the time of the Holocene Climatic Optimum Conclusion 13. Recent climatic evolution Recent climatic evolution in France 13.1 Dynamics of the great Sahel drought Sahelian pluviogenesis Causes of the great drought The southward movement of pluviogenetic structures 13.2 Climatic evolution in the North Atlantic/Europe/Mediterranean space Recent regional climatic evolutions Dynamics of weather and climate in the North Atlantic space Conclusion Polar and Alpine glaciers 13. 3 Dynamics of the Pacific space - El Niño Aerological dynamics of the North Pacific space The "El Niño phenomenon" The components of El Niño in the eastern Pacific The origin of torrential rains in northern Peru The components of El Niño in the tropical Pacific The increasing frequency of the El Niño phenomenon 13.4 The expansion of the northern meteorological hemisphere Climatic consequences in the tropics Lack of rainfall at norhern tropical margins The inverse relationship between northern and southern tropical rainfall Greatly increased cyclonic activity south of the equator "Global warning"? Climatic perspectives 14. General conclusion Bibliography Index