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Author : James Henry Jones
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (318 download)
Download or read book Vertical Mixing in the Equatorial Undercurrent written by James Henry Jones and published by . This book was released on 1969 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ryan Mahony Holmes
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (944 download)
Download or read book Tropical Instability Waves and Mixing in the Equatorial Pacific Ocean written by Ryan Mahony Holmes and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The unique dynamics of the equatorial oceans play an important role in the El Nino - Southern Oscillation (ENSO) and the ocean's meridional overturning circulation (MOC), both of which are critical processes that drive global climate variability on a range of time-scales. This dissertation makes a number of contributions to our understanding of equatorial ocean dynamics, lateral and vertical mixing at the equator, the behavior of equatorial waves and deep equatorial mixing, with implications for both ENSO and the MOC. The main contributions are: 1) Tropical instability waves (TIWs), the main drivers of lateral eddy mixing in the eastern equatorial Pacific, share a number of dynamical features with submesoscale flows in the mid-latitudes. In particular, their formation depends on the detailed frontal dynamics and sharp vertical gradients around their fringes, with implications for TIW energetics and the accurate representation of TIWs in low-resolution ocean models. 2) TIWs drive modulations in vertical mixing by altering the vertical shear of the Equatorial Undercurrent (EUC) through horizontal vortex stretching. This modulation can drive net sea surface cooling over the eastern Pacific cold tongue that may partially offset the warming driven by TIW lateral mixing. The magnitude of the net cooling depends on the mixing scheme used to parameterize vertical mixing, with implications for the role of TIWs in the mixed-layer heat budget in different ocean models. 3) Downwelling (upwelling) equatorial Kelvin waves can drive large decreases (increases) in the amplitude of the TIW field in the eastern equatorial Pacific and thus TIW-driven lateral and vertical mixing. The Kelvin waves alter the strength and structure of the background flow from which the TIWs gain energy, resulting in complex changes to the TIW energy budget. One major sink of TIW energy, the downward radiation of waves, is strongly altered with implications for deep and abyssal equatorial ocean circulation. 4) Mixing in the abyssal equatorial Pacific can exhibit a seafloor-intensified vertical structure even over smooth topography. The generation and breaking of lee waves over smooth topography at low latitudes is one possible mechanism that could contribute to this mixing. However, downward-propagating equatorial waves generated at the surface by TIWs or wind events could also supply energy for seafloor-intensified mixing through two possible mechanisms, wave trapping due to the horizontal component of Earth's rotation and inertial instability initiated by wave-driven displacement of fluid away from the equator. These results suggest that more attention should be devoted to measuring and understanding mixing over smooth topography in the abyssal equatorial oceans because of its potential role in the global overturning circulation.
Author : David Halpern
Publisher :
ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (318 download)
Download or read book Vertical Motion in the Equatorial Upper Ocean written by David Halpern and published by . This book was released on 1987 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Boris Galperin
Publisher : Cambridge University Press
ISBN 13 : 1107043883
Total Pages : 527 pages
Book Rating : 4.1/5 (7 download)
Download or read book Zonal Jets written by Boris Galperin and published by Cambridge University Press. This book was released on 2019-02-28 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a comprehensive, multidisciplinary volume on the physics of zonal jets, from the leading experts, for graduate students and researchers.
Author : J.C.J. Nihoul
Publisher : Elsevier
ISBN 13 : 0080870740
Total Pages : 379 pages
Book Rating : 4.0/5 (88 download)
Download or read book Hydrodynamics of the Equatorial Ocean written by J.C.J. Nihoul and published by Elsevier. This book was released on 1983-05-01 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrodynamics of the Equatorial Ocean
Author : Aike Beckmann
Publisher : World Scientific
ISBN 13 : 1848168241
Total Pages : 342 pages
Book Rating : 4.8/5 (481 download)
Download or read book Numerical Ocean Circulation Modeling written by Aike Beckmann and published by World Scientific. This book was released on 1999-04-29 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of the models and methods employed in the rapidly advancing field of numerical ocean circulation modeling. For those new to the field, concise reviews of the equations of oceanic motion, sub-grid-scale parameterization, and numerical approximation techniques are presented and four specific numerical models, chosen to span the range of current practice, are described in detail. For more advanced users, a suite of model test problems is developed to illustrate the differences among models, and to serve as a first stage in the quantitative evaluation of future algorithms. The extensive list of references makes this book a valuable text for both graduate students and postdoctoral researchers in the marine sciences and in related fields such as meteorology, and climate and coupled biogeochemical modeling.
Author : Robert Bruce Williams
Publisher :
ISBN 13 :
Total Pages : 298 pages
Book Rating : 4.:/5 (318 download)
Download or read book Direct Measurements of Turbulence in the Pacific Equatorial Undercurrent written by Robert Bruce Williams and published by . This book was released on 1974 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Meredith
Publisher : Elsevier
ISBN 13 : 0128215135
Total Pages : 386 pages
Book Rating : 4.1/5 (282 download)
Download or read book Ocean Mixing written by Michael Meredith and published by Elsevier. This book was released on 2021-09-16 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean Mixing: Drivers, Mechanisms and Impacts presents a broad panorama of one of the most rapidly-developing areas of marine science. It highlights the state-of-the-art concerning knowledge of the causes of ocean mixing, and a perspective on the implications for ocean circulation, climate, biogeochemistry and the marine ecosystem. This edited volume places a particular emphasis on elucidating the key future questions relating to ocean mixing, and emerging ideas and activities to address them, including innovative technology developments and advances in methodology. Ocean Mixing is a key reference for those entering the field, and for those seeking a comprehensive overview of how the key current issues are being addressed and what the priorities for future research are. Each chapter is written by established leaders in ocean mixing research; the volume is thus suitable for those seeking specific detailed information on sub-topics, as well as those seeking a broad synopsis of current understanding. It provides useful ammunition for those pursuing funding for specific future research campaigns, by being an authoritative source concerning key scientific goals in the short, medium and long term. Additionally, the chapters contain bespoke and informative graphics that can be used in teaching and science communication to convey the complex concepts and phenomena in easily accessible ways. Presents a coherent overview of the state-of-the-art research concerning ocean mixing Provides an in-depth discussion of how ocean mixing impacts all scales of the planetary system Includes elucidation of the grand challenges in ocean mixing, and how they might be addressed
Author : N.G. Jerlov
Publisher : Elsevier
ISBN 13 : 0080870503
Total Pages : 247 pages
Book Rating : 4.0/5 (88 download)
Download or read book Marine Optics written by N.G. Jerlov and published by Elsevier. This book was released on 1976-01-01 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Optics
Author : S. George Philander
Publisher : Academic Press
ISBN 13 : 0080570984
Total Pages : 309 pages
Book Rating : 4.0/5 (85 download)
Download or read book El Nino, La Nina, and the Southern Oscillation written by S. George Philander and published by Academic Press. This book was released on 1989-12-14 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: El Nino and the Southern Oscillation is by far the most striking phenomenon caused by the interplay of ocean and atmosphere. It can be explained neither in strictly oceanographic nor strictly meteorological terms. This volume provides a brief history of the subject, summarizes the oceanographic and meteorological observations and theories, and discusses the recent advances in computer modeling studies of the phenomenon. Includes a comprehensive and up-to-date research survey Discusses in detail sophisticated computer models Provides a clear exposition of the major problems which prevent more accurate predictions of El Nino
Author : J.C.J. Nihoul
Publisher : Elsevier
ISBN 13 : 0080870848
Total Pages : 557 pages
Book Rating : 4.0/5 (88 download)
Download or read book Small-Scale Turbulence and Mixing in the Ocean written by J.C.J. Nihoul and published by Elsevier. This book was released on 1988-05-01 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the 19th International Liège Colloquium on Ocean Hydrodynamics, the programme of which focused on the relationships between small-scale mixing and large-scale features, transports and processes. The presentation of papers on various methods of parameterization of small-scale turbulent mixing for numerical ocean models was particularly encouraged and this resulted in more than a third of the papers presented at the Colloquium dealing in one way or another with the parameterization problems; many of these papers demonstrate the direct results of modelling. These proportions are well reflected in this volume of proceedings and thus emphasize once more the importance of small-scale turbulence research for such vital practical applications as ocean modelling and forecasting.
Author : Antony Joseph
Publisher : Newnes
ISBN 13 : 0123914280
Total Pages : 447 pages
Book Rating : 4.1/5 (239 download)
Download or read book Measuring Ocean Currents written by Antony Joseph and published by Newnes. This book was released on 2013-08-12 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measuring Ocean Currents: Tools, Technologies, and Data covers all major aspects of ocean current measurements in view of the implications of ocean currents on changing climate, increasing pollution levels, and offshore engineering activities. Although more than 70% of the Earth is covered by ocean, there is limited information on the countless fine- to large-scale water motions taking place within them. This book fills that information gap as the first work that summarizes the state-of-the-art methods and instruments used for surface, subsurface, and abyssal ocean current measurements. Readers of this book will find a wealth of information on Lagrangian measurements, horizontal mapping, imaging, Eulerian measurements, and vertical profiling techniques. In addition, the book describes modern technologies for remote measurement of ocean currents and their signatures, including HF Doppler radar systems, satellite-borne sensors, ocean acoustic tomography, and more. Crucial aspects of ocean currents are described in detail as well, including dispersion of effluents discharged into the sea and transport of beneficial materials—as well as environmentally hazardous materials—from one region to another. The book highlights several important practical applications, showing how measurements relate to climate change and pollution levels, how they affect coastal and offshore engineering activities, and how they can aid in tsunami detection. Coverage of measurement, mapping and profiling techniques Descriptions of technologies for remote measurement of ocean currents and their signatures Reviews crucial aspects of ocean currents, including special emphasis on the planet-spanning thermohaline circulation, known as the ocean's "conveyor belt," and its crucial role in climate change
Author : H. Peters
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (131 download)
Download or read book Equatorial Vertical Mixing written by H. Peters and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward D. Goldberg
Publisher : Harvard University Press
ISBN 13 : 9780674017351
Total Pages : 1072 pages
Book Rating : 4.0/5 (173 download)
Download or read book Marine Modeling V 6 written by Edward D. Goldberg and published by Harvard University Press. This book was released on 1977-01-31 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. Boje
Publisher : Springer Science & Business Media
ISBN 13 : 3642669859
Total Pages : 310 pages
Book Rating : 4.6/5 (426 download)
Download or read book Upwelling Ecosystems written by R. Boje and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Upwelling areas are among the most fertile regions of the ocean. In principle, upwelling is caused by the divergence of the flow in the surface layer of the ocean which arises as a consequence of a particular wind field, the presence of a coastline, or other special conditions. Since deeper oceanic layers are usually enriched wi th nutrients, it is the permanent supply of nutrients which forms the basis for the high producti vi ty of upwelling reg ions. The study of upwelling and its consequences were, for a long time, the task of individual scientists from all disciplines of marine science. Today, it is perhaps the branch of oceanography where interdisciplinary coopera tion has developed best. Becoming aware of the large potential yield of upwelling regions, governments in creased the funds for upwelling research. With research activities developed on a larger scale, interdisciplin ary cooperation became a necessity. On the international level, several symposia documented the rapid development. Three volumes reflect the results of these scientific meetings (Rapp. Proc.-Verb. 159, 1970; Inv. Pesq. 35, 1, 1971; Tethys §.' 1-2, 1974). The present book contains selected papers from the Third Symposium on Upwelling Ecosystems, which was held in Kiel in September 1975. Although the third of a series of meetings, it was the first where the word "ecosystem" stood in the title for a scientific program.
Author : Sophie Wacongne
Publisher :
ISBN 13 :
Total Pages : 884 pages
Book Rating : 4.:/5 (318 download)
Download or read book Dynamics of the Equatorial Undercurrent and Its Termination written by Sophie Wacongne and published by . This book was released on 1988 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study focuses on the zonal weakening, eastern termination and seasonal variations of the Atlantic equatorial undercurrent (EUC). The main and most original contribution of the dissertation is a detailed analysis of the Atlantic EUC simulated by Philander and Pacanowski's (1986)general circulation model (GCM), which provides a novel description of the dynamical regimes governing various regions of a nonlinear stratified undercurrent. Only in a narrow deep western region of the simulation does one find an approximately inertial regime corresponding to zonal acceleration. Elsewhere frictional processes cannot be ignored. The bulk of the mid-basin model EUC terminates in the overlying westward surface flow while only a small fraction (the deeper more inertial layers) terminates at the eastern coast. In agreement with observations, a robust feature of the GCM not present in simpler models is the apparent migration of the EUC core from above the thermocline in the west to below it in the east. In the GCM, this happens because the eastward flow is eroded more efficiently by vertical friction above the base of the thermocline than by lateral friction at greater depths. This mechanism is a plausible one for the observed EUC. A scale analysis using a depth scale which decreases with distance eastwards predicts the model zonal transition between western inertial and eastern inertio-frictional regimes. Historical and recent observations and simple models of the equatorial and coastal eastern undercurrents are reviewed, and a new analysis of current measurements in the eastern equatorial Atlantic is presented. Although the measurements are inadequate for definitive conclusions, they suggest that Lukas' (1981) claim of a spring surge of the Pacific EUC to the eastern coast and a seasonal branching of the EUC into a coastal southeastward undercurrent may also hold for the Atlantic Ocean. To improve the agreement between observed and modelled strength of the eastern undercurrent, it is suggested that the eddy coefficient of horizontal mixing should be reduced in future GCM simulations.
Author :
Publisher :
ISBN 13 :
Total Pages : 556 pages
Book Rating : 4.F/5 ( download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
