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Mass Transport Gravity Flows And Bottom Currents

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Mass Transport Gravity Flows and Bottom Currents

Mass Transport  Gravity Flows  and Bottom Currents Book
Author : G. Shanmugam
Publisher : Elsevier
Release : 2020-11-02
ISBN : 0128225742
Language : En, Es, Fr & De

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Book Description :

Mass Transport, Gravity Flows, and Bottom Currents: Downslope and Alongslope Processes and Deposits focuses solely on important downslope and alongslope processes. The book provides clear definitions and characteristics based on soil mechanics, fluid mechanics and sediment concentration by volume. It addresses Slides, Slumps, and Debris Flows, Grain Flows, Liquefied/Fluidized Flows, and Turbidity Currents, Density plumes, Hyperpycnal Flows, the Triggering Mechanisms of Downslope Processes, Bottom Currents, and Soft-Sediment Deformation Structures. The mechanics of each process are described in detail and used to provide empirically-driven categories to help recognize these deposits it the rock record. Case studies clearly illustrate of the problems inherent in recognizing these processes in the rock record, and potential solutions are provided alongside future avenues of research. An appendix also provides step-by-step guidance in describing and interpreting sediments. Comprehensively addresses modern downslope and alongslope processes, including definitions and mechanisms Provides key criteria for the recognition of depositional facies in the rock record Includes case studies to illustrate each downslope and alongslope process Identifies key problems and potential solutions for future research Uses pragmatic, empirical, data-driven interpretations to revise conventional facies models

New Perspectives on Deep water Sandstones

New Perspectives on Deep water Sandstones Book
Author : G. Shanmugam
Publisher : Elsevier
Release : 2012
ISBN : 0444563350
Language : En, Es, Fr & De

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Book Description :

This handbook is vital for understanding the origin of deep-water sandstones, emphasizing sandy-mass transport deposits (SMTDs) and bottom-current reworked sands (BCRSs) in petroleum reservoirs. This cutting-edge perspective, a pragmatic alternative to the conventional turbidite concepts, is crucial because the turbidite paradigm is built on a dubious foundation without empirical data on sandy turbidity currents in modern oceans. In the absence of evidence for sandy turbidity currents in natural environments, elegant theoretical models and experimental observations of turbidity currents are irrelevant substitutes for explaining the origin of sandy deposits as "turbidites." In documenting modern and ancient SMTDs (sandy slides, sandy slumps, and sandy debrites) and BCRSs (deposits of thermohaline [contour] currents, wind-driven currents, and tidal currents), the author describes and interprets core and outcrop (1:20 to 1:50 scale) from 35 case studies worldwide (which include 32 petroleum reservoirs), totaling more than 10,000 m in cumulative thickness, carried out during the past 36 years (1974-2010). The book dispels myths about the importance of sea level lowstand and provides much-needed clarity on the triggering of sediment failures by earthquakes, meteorite impacts, tsunamis, and cyclones with implications for the distribution of deep-water sandstone petroleum reservoirs. Promotes pragmatic interpretation of deep-water sands using alternative possibilities Validates the economic importance of SMTDs and BCRS in deep-water exploration and production Rich in empirical data and timely new perspectives

Encyclopedia of Ocean Sciences

Encyclopedia of Ocean Sciences Book
Author : N.A
Publisher : Academic Press
Release : 2019-04-12
ISBN : 0128130822
Language : En, Es, Fr & De

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Book Description :

The oceans cover 70% of the Earth’s surface, and are critical components of Earth’s climate system. This new edition of Encyclopedia of Ocean Sciences summarizes the breadth of knowledge about them, providing revised, up to date entries as well coverage of new topics in the field. New and expanded sections include microbial ecology, high latitude systems and the cryosphere, climate and climate change, hydrothermal and cold seep systems. The structure of the work provides a modern presentation of the field, reflecting the input and different perspective of chemical, physical and biological oceanography, the specialized area of expertise of each of the three Editors-in-Chief. In this framework maximum attention has been devoted to making this an organic and unified reference. Represents a one-stop. organic information resource on the breadth of ocean science research Reflects the input and different perspective of chemical, physical and biological oceanography, the specialized area of expertise of each of the three Editors-in-Chief New and expanded sections include microbial ecology, high latitude systems and climate change Provides scientifically reliable information at a foundational level, making this work a resource for students as well as active researches

Sedimentary Basins

Sedimentary Basins Book
Author : Gerhard Einsele
Publisher : Springer Science & Business Media
Release : 2000-07-27
ISBN : 9783540661931
Language : En, Es, Fr & De

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Book Description :

This revised and enlarged edition provides an up to date overview of all major topics in sedimentary geology; unique in its quantitative approach to denudation-accumulation systems and basin fillings, including dynamic aspects. Provides coverage of the development of sedimentary basins and the rapid progress made in the field over the past decade.

Principles of Sedimentology and Stratigraphy

Principles of Sedimentology and Stratigraphy Book
Author : Sam Boggs
Publisher : Macmillan College
Release : 1995
ISBN :
Language : En, Es, Fr & De

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Book Description :

Aimed at advanced undergraduates but suitable also for graduate students and professionals, it covers processes of sedimentation, describes the characteristics of sedimentary rocks formed in major sedimentary environments, and discusses the fundamental principles of stratigraphy and basin analysis, including recent developments in the important fields of magnetostratigraphy, seismic stratigraphy, sequence stratigraphy, isotope stratigraphy, and sea-level analysis. The book presents divergent views on controversial topics and is extensively referenced and up-to-date thus encouraging students to refer to recently published literature.

Minerals and Mineraloids in Marine Sediments

Minerals and Mineraloids in Marine Sediments Book
Author : R.G. Rothwell
Publisher : Springer Science & Business Media
Release : 2012-12-06
ISBN : 9400911335
Language : En, Es, Fr & De

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Book Description :

Over 60% of the Earth's surface is covered with deep marine sediments, however, until the early 1980s, no comprehensive text books appeared to support the rapid expansion in the study of these sediments. While the whole field of marine geology has expanded enormously and entirely new disciplines, such as paleoceanography, have been developed, there remains a lack of reference texts on study techniques that investigators in the marine community can turn to. Minerals and Mineraloids in Marine Sediments is an optical identifica tion guide that I believe will become a standard reference text for use in the microscope analysis of marine sediment& and sedimentary rocks. The systematic collection of sediment cores from the deep ocean floor began in earnest with the Swedish Deep Sea Expedition, 1947-1948. Much of the microscopic examination of the sediments collected in these piston cores (10 m+ long) was conducted on separated grain mounts or thin sections of impregnated sediments. By the late 1960s a simpler technique of examining a mounted smear of the cored silt and clay size sediment on a microscope slide had become standard practice in American oceanographic institutions. This semi quantitative technique became the standard tool used in core description aboard Glomar Challenger through the 15 years of the Deep Sea Drilling Project (DSDP), 1968-1983. Visual percentage estimates of biogenic and mineral components were made using petrologic micro scopes.

Marine Authigenesis

Marine Authigenesis Book
Author : Craig R. Glenn,Liliane Prévôt-Lucas,Jacques Lucas
Publisher : Sepm Society for Sedimentary
Release : 2000
ISBN :
Language : En, Es, Fr & De

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Book Description :

Sea Bed Mechanics

Sea Bed Mechanics Book
Author : John F. A. Sleath
Publisher : Wiley-Interscience
Release : 1984
ISBN :
Language : En, Es, Fr & De

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Book Description :

New York : Wiley, c1984.

Invitation to Oceanography

Invitation to Oceanography Book
Author : Paul R. Pinet
Publisher : Jones & Bartlett Learning
Release : 2006
ISBN : 9780763740795
Language : En, Es, Fr & De

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Book Description :

The new Fourth Edition of Invitation to Oceanography provides students with a complete, concise overview of how the ocean works, spanning the four major divisions of ocean science: geology, chemistry, physics, and biology. It's informal, conversational style and use of familiar analogies make this text appropriate for a broad range of readers. With cutting-edge material, including such hot topics as Hurricane Katrina, and a wealth of new updates and end of chapter material, Pinet's latest edition is the most up-to-date text available!

Mass Transport in Water Waves

Mass Transport in Water Waves Book
Author : Chiang C. Mei,Philip L. F. Liu
Publisher :
Release : 1972
ISBN :
Language : En, Es, Fr & De

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Book Description :

When a fluid is in periodic wave motion, a fluid particle is carried by a velocity field varying from place to place. At different instants the location of the particle differs and so does the velocity field in its immediate neighborhood. As a result the time-averaged velocity of a particle may be different from the local velocity field. In particular, a fluid particle may have a net mean drift even if the local velocity field has zero mean; this is indeed the case in irrotational gravity waves. In a viscous fluid, the wave-induced Reynolds stress imparts a steady momentum to the fluid; a steady shear is set up to balance it and hence a further mean velocity field results. The sum of these two steady currents provides the total drift by which a fluid particle migrates, and is termed the mass transport velocity. It is of importance to the study of sediment motion in coastal waters. The present report describes a coordinated inquiry into both theoretical and experimental aspects of mass transport by waves. In accordance with the division of effort, it is separated into two parts. However, nearly all ideas expressed and actions taken in both parts have been influenced by extensive mutual discussions. Part I (Theory) begins with a review of the basic assumptions underlying existing theories. General formulas of mass transport velocity components throughout the Stokes boundary layer near a solid body are then derived; details of two examples are calculated. The three-dimensional mass transport distribution throughout the cross section of a wave tank is worked out for progressive waves of very small amplitudes. The effects of finite width is studied with the assumption that vorticity is diffused by molecular viscosity throughout the entire cross section. For a wave obliquely incident and reflected from a vertical sea wall, the structure in the second boundary layer between the Stokes layer and the inviscid core is investigated. This is appropriate for amplitudes much greater than the Stokes layer thickness. Part II (Experiments), were intended in part to check and to evaluate the theoretical deductions in Part I. In particular, extensive measurements were made for the longitudinal mass transport velocity in a progressive wave in a long tank with a smooth bottom. For standing waves and partially standing waves, possible features of erosion and deposition were observed by spreading (1) a small amount of sand on a smooth bottom and (2) a thick layer of sand on the bottom. The relevance of mass transport very near the bottom to the bed load transport is discussed in the light of the real beach environment.

Abstracts

Abstracts Book
Author : N.A
Publisher :
Release : 1989
ISBN :
Language : En, Es, Fr & De

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Book Description :

Coastal Engineering VI

Coastal Engineering VI Book
Author : C. A. Brebbia,David Almorza Gomar,F. Lopez Aguayo
Publisher : Wit Pr/Computational Mechanics
Release : 2003
ISBN : 9781853129773
Language : En, Es, Fr & De

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Book Description :

The pollution and general degradation of coastal areas have become problems of major international concern while the related environmental problems need further study in order to implement effective remedial action. Moreover, the design and construction of developments necessary for navigation such as harbours and marinas require an accurate knowledge of sea climate, especially in cases of extreme conditions.