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Author : Marc Damon
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (543 download)
Download or read book Ocean Wave Spectral Analysis from Pressure Sensor Array and Acoustic Doppler Current Profiler written by Marc Damon and published by . This book was released on 2003 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 :
Publisher :
ISBN 13 :
Total Pages : 938 pages
Book Rating : 4.:/5 (89 download)
Download or read book Ocean Wave Measurement and Analysis written by and published by . This book was released on 1974 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Scott Haven
Publisher :
ISBN 13 :
Total Pages : 119 pages
Book Rating : 4.:/5 (825 download)
Download or read book Measuring Surface Ocean Wave Height and Directional Spectra Using an Acoustic Doppler Current Profiler from an Autonomous Underwater Vehicle written by Scott Haven and published by . This book was released on 2012 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Acoustic Doppler Current Profiler (ADCP) is a proven technology which is capable of measuring surface wave height and directional information, however it is generally limited to rigid, bottom mounted applications which limit its capabilities for measuring deep water waves. By employing an upward looking ADCP on a moving platform, such as an autonomous underwater vehicle or submerged float, we show that it is possible to remove the wave induced motion of the platform and accurately measure surface ocean wave information. The platform selected for testing was a REMUS-100 vehicle equipped with an upward and downward looking ADCP and high accuracy Kearfott inertial navigation unit. Additionally, a Microstrain 3DM-GX3-25 Attitude Heading Reference System was tested as a low cost alternative to the Kearfott system. An experiment consisting of multiple REMUS deployments was conducted near the Martha's Vineyard Coastal Observatory (MVCO). The wave induced motion was measured by various inertial and acoustic sensors and removed from the ADCP data record. The surface wave height and mean directional estimates were compared against a Datawell MKIII directional Waverider buoy and bottom mounted 1200 kHz upward looking ADCP at the MVCO. Results demonstrate that the non-directional spectrum of wave height and the mean wave direction as a function of frequency can be accurately measured from an underway autonomous underwater vehicle in coastal depth waters using an ADCP.
Author : Chen-Tung Arthur Chen
Publisher : EOLSS Publications
ISBN 13 : 1905839642
Total Pages : 378 pages
Book Rating : 4.9/5 (58 download)
Download or read book OCEANOGRAPHY– Volume III written by Chen-Tung Arthur Chen and published by EOLSS Publications. This book was released on 2009-04-16 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oceanography is a component of Encyclopedia of Earth and Atmospheric Sciences in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. These volumes deal with the oceans as an integrated dynamic system, characterized by a delicate, complex system of interactions among the biota, the ocean boundaries with the solid earth and the atmosphere. This set of volumes is designed to be a very authoritative reference for state-of-the-art knowledge on the various aspects such as: Physical Oceanography, Chemistry of the oceans, Biological Oceanography, Geological oceanography, Coral Reefs as a Life Supporting System, Human Uses of the Oceans, Ocean Engineering, and Modeling the Ocean System from a Sustainable Development perspective. These volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, managers, and decision makers and NGOs.
Author :
Publisher : Academic Press
ISBN 13 : 0080878857
Total Pages : 4604 pages
Book Rating : 4.0/5 (88 download)
Download or read book Treatise on Estuarine and Coastal Science written by and published by Academic Press. This book was released on 2012-03-06 with total page 4604 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of estuaries and coasts has seen enormous growth in recent years, since changes in these areas have a large effect on the food chain, as well as on the physics and chemistry of the ocean. As the coasts and river banks around the world become more densely populated, the pressure on these ecosystems intensifies, putting a new focus on environmental, socio-economic and policy issues. Written by a team of international expert scientists, under the guidance of Chief Editors Eric Wolanski and Donald McClusky, the Treatise on Estuarine and Coastal Science, Ten Volume Set examines topics in depth, and aims to provide a comprehensive scientific resource for all professionals and students in the area of estuarine and coastal science Most up-to-date reference for system-based coastal and estuarine science and management, from the inland watershed to the ocean shelf Chief editors have assembled a world-class team of volume editors and contributing authors Approach focuses on the physical, biological, chemistry, ecosystem, human, ecological and economics processes, to show how to best use multidisciplinary science to ensure earth's sustainability Provides a comprehensive scientific resource for all professionals and students in the area of estuarine and coastal science Features up-to-date chapters covering a full range of topics
Author : Marshall Delph Earle
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (318 download)
Download or read book A Practical Guide to Ocean Wave Measurement and Analysis written by Marshall Delph Earle and published by . This book was released on 1984 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David S. Mueller
Publisher : CreateSpace
ISBN 13 : 9781500222666
Total Pages : 82 pages
Book Rating : 4.2/5 (226 download)
Download or read book Measuring Discharge with Acoustic Doppler Current Profilers from a Moving Boat written by David S. Mueller and published by CreateSpace. This book was released on 2014-06-16 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mission of the U.S. Geological Survey (USGS) Water Resources Discipline is to provide the information and understanding needed for wise management of the Nation's water resources. Inherent in this mission is the responsibility of collecting data that accurately describe the physical, chemical, and biological attributes of water systems. These data are used for environmental and resource assessments by the USGS, other government agencies and scientific organizations, and the general public. Reliable and quality-assured data are essential to the credibility and impartiality of the water-resources appraisals carried out by the USGS.
Author : Carl M. Bennett
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (318 download)
Download or read book The Directional Analysis of Ocean Waves written by Carl M. Bennett and published by . This book was released on 1972 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introductory discussion of the mathematics behind the directional analysis of ocean waves is presented. There is sufficient detail for a reader interested in applying the methods; further, the report can serve as an entry into the theory. The presentation is basically tutorial but does require a reasonably advanced mathematical background. Results of a program for the measurement of directional ocean wave bottom pressure spectra are included as an appendix. This second edition makes corrections to the first and adds some details of an iterative directional analysis method. (Author).
Author : Thomas H. C. Herbers
Publisher :
ISBN 13 :
Total Pages : 262 pages
Book Rating : 4.:/5 (318 download)
Download or read book Array Measurements of Surface Gravity Waves written by Thomas H. C. Herbers and published by . This book was released on 1990 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Local properties of natural, wind generated, surface gravity waves are examined with arrays of pressure transducers. Two methods are presented for interpretation of array measurements. First and estimator for wave radiation stresses and energy fluxes is derived, applicable to an array of 4 pressure transducers arranged in a square. The technique is based on an expansion for small kL with k the wave number and L the sensor separation. A variational method for estimating directional wave spectra, applicable to arbitrary array geometries in constant or slowly varying depth water is presented next. A smooth estimate of the directional distribution of wave energy S (Theta) is obtained by minimizing a roughness measure. Model tests show that spurious features are effectively rejected by the smoothness constraint, and illustrate the importance of data-independent information. Estimates of S(Theta), obtained from field data collected offshore of a mildly sloping beach, show that reflection of incident sea and swell is very weak. Observations of sea floor pressure fluctuations in 13 m depth are compared to a theory for weakly nonlinear surface gravity waves. Nonlinear interactions between directionally opposing seas theoretically excite long wavelength, double sea frequency forced waves that are only weakly attenuated at the sea floor. Observed bottom pressure spectra show that large fluctuations in double sea frequency (0.35 - 0.6 Hz) forced wave energy can occur in only a few hours.
Author : Vitor Manuel Henriques Goncalo
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.:/5 (318 download)
Download or read book Measuring Shallow Water Waves with Pressure Sensors written by Vitor Manuel Henriques Goncalo and published by . This book was released on 1978 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: For two locations within the surf zone sea surface elevations were observed using a wave staff and a pressure sensor while simultaneously the two horizontal orthogonal components, u and v, of water particle velocity were measured. Surface elevations derived from pressure sensors are lower, mainly in the region of the crest, compared with the same surface elevations measured with wave gages. Pressure records are more smoothed than wave gage records, and the energy computed for waves measured with a pressure sensor is consistently smaller than for waves measured with a wave gage. Methods for converting pressure to surface elevation are given which include the non-linear velocity term (u sq + v sq) which is usually neglected in the Bernoulli equation. Two techniques are proposed to include this term: (1) flowmeters are used to measure u and v, and (2) the Bernoulli term is derived by determining the velocities by convolving the pressure records using a weighting function determined from shallow water theory.
Author : O. M. Phillips
Publisher : Springer Science & Business Media
ISBN 13 : 1468489801
Total Pages : 677 pages
Book Rating : 4.4/5 (684 download)
Download or read book Wave Dynamics and Radio Probing of the Ocean Surface written by O. M. Phillips and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1960, Dr. George Deacon ofthe National Institute ofOceanography in England organized a meeting in Easton, Maryland that summarized the state of our understanding at that time of ocean wave statistics and dynamics. It was a pivotal occasion: spectral techniques for wave measurement were beginning to be used, wave-wave interactions hadjust been discovered, and simple models for the growth of waves by wind were being developed. The meeting laid the foundation for much work that was to follow, but one could hardly have imagined the extent to which new techniques of measurement, particularly by remote sensing, new methods of calculation and computation, and new theoretical and laboratory results would, in the following twenty years, build on this base. When Gaspar Valenzuela of the V. S. Naval Research Laboratory perceived that the time was right for a second such meeting, it was natural that Sir George Deacon would be invited to serve as honorary chairman for the meeting, and the entire waves community was delighted at his acceptance. The present volume contains reviewed and edited papers given at this second meeting, held this time in Miami, Florida, May 13-20, 1981, with the generous support of the Office of Naval Research, the National Aeronautics and Space Administration, and the National Oceanic and Atmospheric Administration.
Author :
Publisher :
ISBN 13 :
Total Pages : 382 pages
Book Rating : 4.3/5 (91 download)
Download or read book Ocean Wave Spectra written by and published by . This book was released on 1963 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 310 pages
Book Rating : 4.:/5 (318 download)
Download or read book International Ocean Systems written by and published by . This book was released on 2001 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert G Dean
Publisher : World Scientific Publishing Company
ISBN 13 : 9814365696
Total Pages : 369 pages
Book Rating : 4.8/5 (143 download)
Download or read book Water Wave Mechanics For Engineers And Scientists written by Robert G Dean and published by World Scientific Publishing Company. This book was released on 1991-01-23 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended as an introduction to classical water wave theory for the college senior or first year graduate student. The material is self-contained; almost all mathematical and engineering concepts are presented or derived in the text, thus making the book accessible to practicing engineers as well.The book commences with a review of fluid mechanics and basic vector concepts. The formulation and solution of the governing boundary value problem for small amplitude waves are developed and the kinematic and pressure fields for short and long waves are explored. The transformation of waves due to variations in depth and their interactions with structures are derived. Wavemaker theories and the statistics of ocean waves are reviewed. The application of the water particle motions and pressure fields are applied to the calculation of wave forces on small and large objects. Extension of the linear theory results to several nonlinear wave properties is presented. Each chapter concludes with a set of homework problems exercising and sometimes extending the material presented in the chapter. An appendix provides a description of nine experiments which can be performed, with little additional equipment, in most wave tank facilities.
Author : R. J. Uncles
Publisher : Cambridge University Press
ISBN 13 : 1107040981
Total Pages : 363 pages
Book Rating : 4.1/5 (7 download)
Download or read book Estuarine and Coastal Hydrography and Sediment Transport written by R. J. Uncles and published by Cambridge University Press. This book was released on 2017-08-17 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical guide to the latest techniques to measure sediments, seabed, water and transport mechanisms in estuaries and coastal waters. Covering a broad range of topics, enough background is included to explain how each technology functions. A review of recent fieldwork experiments demonstrates how modern methods apply in real-life scenarios.
Author : Shams E. Riffat
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (445 download)
Download or read book Directional Spectral Analysis of Ocean Waves Including a Mean Horizontal Current written by Shams E. Riffat and published by . This book was released on 1999 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
