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Intrusive Gravity Currents
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Book Synopsis Intrusive Gravity Currents by : Alice Thanh Hang
Download or read book Intrusive Gravity Currents written by Alice Thanh Hang and published by . This book was released on 2009 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis will discuss equilibrium and non-equilibrium intrusive gravity currents or intrusions, in two layer and continuous stratifications. Although the associated time and length scales are significantly smaller than those appropriate to most natural flows of interest, insights can occur when discussing actual laboratory experiments provided that the Reynolds number is sufficiently large so that viscous effects do not show a leading order influence. Lock release experiments were performed and the speed was analyzed using DigImage and Digiflow. The equilibrium intrusion is discussed which is an extension of the doubly symmetric case, where the density of the current is the depth-weighted mean density of the layers. The non-equilibrium case is also discussed and unlike the equilibrium flow, the intrusion fluid steadily rises or falls behind the intrusion front, adding an additional source of energy to drive the flow. These intrusions were performed in two-layer and continuous stratifications. The results presented in this thesis include experimental and numerical data and follow closely to the work of previous researchers' theoretical models.
Book Synopsis Gravity Currents And Intrusions: Analysis And Prediction by : Marius Ungarish
Download or read book Gravity Currents And Intrusions: Analysis And Prediction written by Marius Ungarish and published by World Scientific. This book was released on 2020-12-08 with total page 815 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flow of gravity currents and intrusions is a subject of active research and engineering application. Currently, there are no formal teaching courses for this topic. Materials and information available in the market are scattered and dated. Researchers and engineers face difficulties in acquiring the 'state-of-the-art' knowledge. The book bridges this gap between the need and supply of the relevant insight and know-how.Written by a renowned author who is a recognized authority in the field, this unique compendium assembles the relevant knowledge into a systematic and unified framework. The presentation is gradual from the elementary to the frontier, and accessible to readers with only a basic background in fluid mechanics and applied mathematics. This will facilitate the systematic acquirement and application of available knowledge to both practical problems and further research.This must-have volume is a useful monograph — that can also serve as a textbook in advanced courses — for researchers, students, engineers and applied mathematicians in the fields of civil engineering, hydraulic engineering, mechanical engineering, ocean engineering and environmental engineering.
Book Synopsis Gravity Currents by : John E. Simpson
Download or read book Gravity Currents written by John E. Simpson and published by Cambridge University Press. This book was released on 1999-10-21 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 1997 paperback of well-received study of gravity currents for many disciplines, including meteorology, oceanography, earth science.
Book Synopsis Axisymmetric Intrusive Gravity Currents Generated by Bubble Plumes by : Charles James Lemckert
Download or read book Axisymmetric Intrusive Gravity Currents Generated by Bubble Plumes written by Charles James Lemckert and published by . This book was released on 1992 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gravity and Magnetic Exploration by : William J. Hinze
Download or read book Gravity and Magnetic Exploration written by William J. Hinze and published by Cambridge University Press. This book was released on 2013-03-14 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: This combination of textbook and reference manual provides a comprehensive account of gravity and magnetic methods for exploring the subsurface using surface, marine, airborne and satellite measurements. It describes key current topics and techniques, physical properties of rocks and other Earth materials, and digital data analysis methods used to process and interpret anomalies for subsurface information. Each chapter starts with an overview and concludes by listing key concepts to consolidate new learning. An accompanying website presents problem sets and interactive computer-based exercises, providing hands-on experience of processing, modeling and interpreting data. A comprehensive online suite of full-color case histories illustrates the practical utility of modern gravity and magnetic surveys. This is an ideal text for advanced undergraduate and graduate courses and reference text for research academics and professional geophysicists. It is a valuable resource for all those interested in petroleum, engineering, mineral, environmental, geological and archeological exploration of the lithosphere.
Book Synopsis Turbulence in Rotating, Stratified and Electrically Conducting Fluids by : P. A. Davidson
Download or read book Turbulence in Rotating, Stratified and Electrically Conducting Fluids written by P. A. Davidson and published by Cambridge University Press. This book was released on 2013-09-12 with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are two recurring themes in astrophysical and geophysical fluid mechanics: waves and turbulence. This book investigates how turbulence responds to rotation, stratification or magnetic fields, identifying common themes, where they exist, as well as the essential differences which inevitably arise between different classes of flow. The discussion is developed from first principles, making the book suitable for graduate students as well as professional researchers. The author focuses first on the fundamentals and then progresses to such topics as the atmospheric boundary layer, turbulence in the upper atmosphere, turbulence in the core of the earth, zonal winds in the giant planets, turbulence within the interior of the sun, the solar wind, and turbulent flows in accretion discs. The book will appeal to engineers, geophysicists, astrophysicists and applied mathematicians who are interested in naturally occurring turbulent flows.
Book Synopsis The Propagation of Gravity Currents Along Continental Shelves by : Doron Nof
Download or read book The Propagation of Gravity Currents Along Continental Shelves written by Doron Nof and published by . This book was released on 1988 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytical method for computing the speed at which the noise of a light (rotating) intrusion advances along a continental shelf is proposed. The nonlinear model includes two active layers; the intrusion itself, which occupies the entire shelf (and extends beyond the shelf break), and the heavy fluid situated both ahead of the intrusion and in the deep ocean. The section of the intrusion which extends beyond the shelf break overlies an infinitely deep ocean. Friction is neglected but the motions near the intrusion's leading edge are not constrained to be quasi-geostrophic nor are they constrained to be hydrostatic. Solutions for steadily propagating currents are constructed analytically by taking into account the flow-forces behind and ahead of the nose, and considering the conservation of energy and potential vorticity. This procedure leads to a set of algebraic equations, which are solved analytically using a perturbation scheme in epsilon the ration between the internal deformation radius and the shelf width. It is found that all the heavy fluid ahead of the intrusion is trapped and cannot be removed from the shelf. Namely, it is pushed ahead of the intrusion's leading edge as the gravity current is advancing behind. Unlike intrusions without a shelf, which can never reach a truly steady propagation rate (in an infinitely deep ocean), the intrusion in question propagates steadily when epsilon approaches 0. Under such conditions, the propagation rate is given by sq. rt. (2 g'D), where g' is the reduced gravity and D is the intrusion depth at the shelf break (note that D> or = H, where H is the (uniform) shelf depth, so that at the shelf break the intrusion is deeper than the shelf. Reprints. (JHD).
Book Synopsis Mixing and Dispersion in Flows Dominated by Rotation and Buoyancy by : Herman J.H. Clercx
Download or read book Mixing and Dispersion in Flows Dominated by Rotation and Buoyancy written by Herman J.H. Clercx and published by Springer. This book was released on 2017-10-24 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents a state-of-the-art overview of current developments in the field in a way accessible to attendees coming from a variety of fields. Relevant examples are turbulence research, (environmental) fluid mechanics, lake hydrodynamics and atmospheric physics. Topics discussed range from the fundamentals of rotating and stratified flows, mixing and transport in stratified or rotating turbulence, transport in the atmospheric boundary layer, the dynamics of gravity and turbidity currents eventually with effects of background rotation or stratification, mixing in (stratified) lakes, and the Lagrangian approach in the analysis of transport processes in geophysical and environmental flows. The topics are discussed from fundamental, experimental and numerical points of view. Some contributions cover fundamental aspects including a number of the basic dynamical properties of rotating and or stratified (turbulent) flows, the mathematical description of these flows, some applications in the natural environment, and the Lagrangian statistical analysis of turbulent transport processes and turbulent transport of material particles (including, for example, inertial and finite-size effects). Four papers are dedicated to specific topics such as transport in (stratified) lakes, transport and mixing in the atmospheric boundary layer, mixing in stratified fluids and dynamics of turbidity currents. The book is addressed to doctoral students and postdoctoral researchers, but also to academic and industrial researchers and practicing engineers, with a background in mechanical engineering, applied physics, civil engineering, applied mathematics, meteorology, physical oceanography or physical limnology.
Book Synopsis Introduction to Numerical Geodynamic Modelling by : Taras Gerya
Download or read book Introduction to Numerical Geodynamic Modelling written by Taras Gerya and published by Cambridge University Press. This book was released on 2010 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This user-friendly reference for students and researchers presents the basic mathematical theory, before introducing modelling of key geodynamic processes.
Book Synopsis Gravity Currents: In Environment & Lab by : J.E. Simpson
Download or read book Gravity Currents: In Environment & Lab written by J.E. Simpson and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Particulate Gravity Currents by : W. D. McCaffrey
Download or read book Particulate Gravity Currents written by W. D. McCaffrey and published by John Wiley & Sons. This book was released on 2009-03-05 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume arises from the conference Sediment Transport andDeposition by Particulate Gravity Currents held in the UK in 1998.The field of particulate gravity currents ranges from turbiditycurrents in the oceans, lakes and reservoirs to pyroclastic densitycurrents and avalanches, debris flows and lahars, grainflows,powder snow avalanches, effluent dispersal and ancient gravitycurrent deposits. Although the sub-division of particulate gravity currents intodiscrete sub-categories (such as grain flows, turbidity currents ordebris flows) provides a convenient descriptive shorthand, itundermines the sense of process continuum needed to describe manynatural flows. The structure of this volume reflects an integrativeaim, with papers grouped by research approach. The first section ofthe book contains six papers on theoretical and numerical modellingof a range of flow types. The following four papers are focusedupon combined theoretical and experimental modelling approaches.The next section contains four papers describing experimentalmodelling and the final section includes five papers detailingfield-based studies. The volume stands as a testament to the broad range of researchcarried out on particulate gravity currents, and hints at theenhanced rate of progress that is likely to be achieved throughfurther integrated studies. If you are a member of the International Association ofSedimentologists, for purchasing details, please see:http://www.iasnet.org/publications/details.asp?code=SP31
Book Synopsis Gravity Currents Propagating Upslope in Uniform and Two-layer Stratified Ambients by : Larissa J. Marleau
Download or read book Gravity Currents Propagating Upslope in Uniform and Two-layer Stratified Ambients written by Larissa J. Marleau and published by . This book was released on 2014 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bottom propagating gravity currents resulting from full- and partial-depth lock-release experiments are investigated as they propagate up a rising slope in uniform and two-layer stratified ambients. In the case of uniform ambients, the gravity current front decelerates in a nearly uniform manner along the slope at a rate that agrees with theoretical predictions. The shape of the gravity current as it decelerates over relatively steep slopes is found to be self-similar with a nearly linear decrease of the head height between the start of the slope and up to 80\% of the distance to the nose. Some deviation from self-similar behaviour is found in cases with small slopes because of the comparatively large volume of fluid in the gravity current tail that flows downslope while the front continues to advance upwards. In the case of two-layer ambients, the initial gravity current front speed is found to be consistent with a theory adapted from \cite{shin_dalziel_linden2004}. The subsequent evolution depends on the gravity current speed relative to the speed of the interfacial disturbance it creates. The deceleration of supercritical gravity currents, which travel faster than the interfacial disturbance, is gradual and agrees well with the relationship developed for upslope gravity currents in uniform density ambients and modified for a two-layer ambient. In most subcritical cases the gravity current suddenly comes to rest as a consequence of interactions with the interfacial disturbance. The disturbance amplitude, speed, and width are found to be nearly constant during its evolution. In cases for which the ambient interface intersected the tank bottom, the amplitude, speed, and width are nearly constant up to the point where the lower layer shallowed and the disturbance transformed into an upslope propagating gravity current.
Book Synopsis The Internal Structure of Gravity Currents by : J. Hacker
Download or read book The Internal Structure of Gravity Currents written by J. Hacker and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Initial-boundary Value Problems and the Navier-Stokes Equations by : Heinz-Otto Kreiss
Download or read book Initial-boundary Value Problems and the Navier-Stokes Equations written by Heinz-Otto Kreiss and published by SIAM. This book was released on 1989-01-01 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation This book provides an introduction to the vast subject of initial and initial-boundary value problems for PDEs, with an emphasis on applications to parabolic and hyperbolic systems. The Navier-Stokes equations for compressible and incompressible flows are taken as an example to illustrate the results. Researchers and graduate students in applied mathematics and engineering will find Initial-Boundary Value Problems and the Navier-Stokes Equations invaluable. The subjects addressed in the book, such as the well-posedness of initial-boundary value problems, are of frequent interest when PDEs are used in modeling or when they are solved numerically. The reader will learn what well-posedness or ill-posedness means and how it can be demonstrated for concrete problems. There are many new results, in particular on the Navier-Stokes equations. The direct approach to the subject still gives a valuable introduction to an important area of applied analysis.
Book Synopsis Colliding Gravity Currents by : Jonathan Oswald Shin
Download or read book Colliding Gravity Currents written by Jonathan Oswald Shin and published by . This book was released on 2001 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geophysics written by William Lowrie and published by Oxford University Press. This book was released on 2018 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. What is geophysics? -- 2. Planet Earth -- 3. Seismology and the Earth's internal structure -- 4. Siesmicity--the restless Earth -- 5. Gravity and the figure of the Earth -- 6. The Earth's heat -- 7. The Earth's magnetic field -- 8. Afterthoughts
Book Synopsis The Encyclopedia of Igneous and Metamorphic Petrology by : Donald Bowes
Download or read book The Encyclopedia of Igneous and Metamorphic Petrology written by Donald Bowes and published by Springer Science & Business Media. This book was released on 1990-02-28 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring over 250 contributions from more than 100 earth scientists from 18 countries, The Encyclopedia of Igneous and Metamorphic Petrology deals with the nature and genesis of igneous rocks that have crystallized from molten magma, and of metamorphic rocks that are the products of re-crystallization associated with increases in temperature and pressure, mainly at considerable depths in the Earth's crust. Entries range from alkaline rocks to zeolite facies - providing information on the mineralogical, chemical and textural characters of rock types, the development of concepts and the present state of knowledge across the spectrum of igneous and metamorphic petrology, together with extensive lists of both commonly used and little used terms and bibliographies.
