Remote Sensing and Validation of Surface Currents from HF Radar

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (777 download)

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Book Synopsis Remote Sensing and Validation of Surface Currents from HF Radar by : Darryl C. Melton

Download or read book Remote Sensing and Validation of Surface Currents from HF Radar written by Darryl C. Melton and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radial current data from the CODAR HF radar network around Monterey Bay, California, were analyzed for the period of August-December 1994. Previous studies in Monterey Bay used total vector current data. Long-term percent coverage maps showed that coverage decreased radially, vice range, from the site. Through statistical exarnination of radial current data from the Santa Crux and Point Piiios SeaSonde sites and the Moss Landing CODAR site, comparisons along and around the baseline between systems were used to assess system performance. Significant discrepancies were discovered in the directional information from the Point Pinos and Moss Landing sites. Point Pinos' error was approximately 10 counterclockwise and Moss Landing's error was approximately 5 counterclockwise. RMS differences among even the best correlated baseline pairs were approximately 15 cm/s. Data from the baseline was used to select vector currents when the baseline difference was less than 10 cm/s for comparisons with independent nearby moored current observations. This subsampled data did not show significantly better correlation with the moored data than the full data set. Analysis of the radial error estimates provided by the system algorithms determined that no correlation exists between absolute value difference of the radial velocities along the baselines between systems and these built in error estimates.

Remote Sensing and Validation of Surface Currents from HF Radar

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ISBN 13 :
Total Pages : 65 pages
Book Rating : 4.:/5 (777 download)

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Book Synopsis Remote Sensing and Validation of Surface Currents from HF Radar by : Darryl C. Melton

Download or read book Remote Sensing and Validation of Surface Currents from HF Radar written by Darryl C. Melton and published by . This book was released on 1995 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radial current data from the CODAR HF radar network around Monterey Bay, California, were analyzed for the period of August-December 1994. Previous studies in Monterey Bay used total vector current data. Long-term percent coverage maps showed that coverage decreased radially, vice range, from the site. Through statistical exarnination of radial current data from the Santa Crux and Point Piiios SeaSonde sites and the Moss Landing CODAR site, comparisons along and around the baseline between systems were used to assess system performance. Significant discrepancies were discovered in the directional information from the Point Pinos and Moss Landing sites. Point Pinos' error was approximately 10 counterclockwise and Moss Landing's error was approximately 5 counterclockwise. RMS differences among even the best correlated baseline pairs were approximately 15 cm/s. Data from the baseline was used to select vector currents when the baseline difference was less than 10 cm/s for comparisons with independent nearby moored current observations. This subsampled data did not show significantly better correlation with the moored data than the full data set. Analysis of the radial error estimates provided by the system algorithms determined that no correlation exists between absolute value difference of the radial velocities along the baselines between systems and these built in error estimates.

Remote Sensing of Surface Currents in Shelf Sea Environments by HF Radar

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (131 download)

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Book Synopsis Remote Sensing of Surface Currents in Shelf Sea Environments by HF Radar by : J. P. Matthews

Download or read book Remote Sensing of Surface Currents in Shelf Sea Environments by HF Radar written by J. P. Matthews and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of OSCR HF Radar Data in Monterey Bay

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Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Characterization of OSCR HF Radar Data in Monterey Bay by : Kimberley F. Boyer

Download or read book Characterization of OSCR HF Radar Data in Monterey Bay written by Kimberley F. Boyer and published by . This book was released on 1997 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 53-hour long record of surface current data from the OSCR HF radar system was gathered over Monterey Bay on 6-8 May, 1995. In this study, OSCR data is evaluated with regard to semi-diurnal (M2) and diurnal (K1) tidal period fluctuations, the seabreeze, seabreeze influenced flow, and both standard and cannonical-day mean flow patterns. The OSCR data is considered on its own and in comparison to similar data types previously gathered by CODAR, a previously established Monterey Bay HF radar system. Two of three CODAR sites were co- located with the two OSCR sites. Internal wave influence is observed in the M2 tidal constituent analysis and the seabreeze greatly influences fluctuations of the K1 tidal period. Results from analysis of OSCR data replicated or reinforced data and results from the CODAR system. Initial OSCR data appears not to have been significantly affected by possible distortion of the phased-array beam patterns. However, contamination of OSCR returns by simultaneous activation of the CODAR systems is apparent in the data.

Measuring Ocean Currents

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Publisher : Newnes
ISBN 13 : 0123914280
Total Pages : 447 pages
Book Rating : 4.1/5 (239 download)

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Book Synopsis Measuring Ocean Currents by : Antony Joseph

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

Surface Current and Wave Validation of a Nested Regional HF Radar Network in the Mid-Atlantic Bight

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Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (61 download)

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Book Synopsis Surface Current and Wave Validation of a Nested Regional HF Radar Network in the Mid-Atlantic Bight by :

Download or read book Surface Current and Wave Validation of a Nested Regional HF Radar Network in the Mid-Atlantic Bight written by and published by . This book was released on 2009 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National High Frequency Surface Current Mapping Radar Network is being developed as a backbone system within the Integrated Ocean Observing System (IOOS). Of the core variables recognized in the IOOS Development Plan, two can be measured by High Frequency Radar (HFR): ocean surface currents and ocean surface waves. Rutgers University operates a nested multi-frequency network of HF Radar systems along the coast of New Jersey. The network provides near real-time current observations with varying coverage from the coast to the shelf break. This is a subset of the larger regional coverage of the 26 site Mid-Atlantic HF Radar Consortium. The primary goal of this consortium is to operate the regional system in a coordinated way to guarantee the delivery of quality ocean current and wave data. In this paper we present the validation of both wave and current observations measured with this nested network. Particular emphasis is placed on surface current comparisons with Coast Guard deployed surface drifters (SLDMBs) and nearshore wave comparisons with moorings. The Coast Guard comparisons have a specific focus on quantifying the uncertainty in the HF radar surface current estimates as applied to search and rescue operations. These metrics will be used to ensure that quality data is going to the Coast Guard and that this information is properly incorporated into existing search planning tools. The nearshore measurements focus on algorithm development projects to incorporate shallow water effects into the estimates of nearshore waves.

Recent Advances and Applications in Remote Sensing

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Publisher : BoD – Books on Demand
ISBN 13 : 1789235367
Total Pages : 216 pages
Book Rating : 4.7/5 (892 download)

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Book Synopsis Recent Advances and Applications in Remote Sensing by : Ming Hung

Download or read book Recent Advances and Applications in Remote Sensing written by Ming Hung and published by BoD – Books on Demand. This book was released on 2018-07-25 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remote sensing was the primary data source since the launch of the first environmental monitoring satellite back in 1972. In the past five decades, remote sensing technology has come a long way and evolved into a mature science. Even so, new technologies, new theories, new methodologies, and new applications continue to emerge. With the rapid pace of technological advancement, it is essential to share experiences especially between different disciplines, either on breakthroughs in new theory or understanding, or applications of remote sensing on real world issues. Disciplines or fields covered in this book include geography, geology, agriculture, forestry, botany, and oceanography. Though remote sensing may be used differently in various disciplines, the principles are similar, if not the same. This book will be valuable to scientists, scholars, working professionals, or students who use remote sensing in their work, and are interested in learning how others use remote sensing in different ways.

Ocean Remote Sensing Technologies

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Publisher : IET
ISBN 13 : 1839531614
Total Pages : 654 pages
Book Rating : 4.8/5 (395 download)

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Book Synopsis Ocean Remote Sensing Technologies by : Weimin Huang

Download or read book Ocean Remote Sensing Technologies written by Weimin Huang and published by IET. This book was released on 2021-12-17 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a systematic introduction to the principles, state-of-the-art methods and applications of high frequency surface/sky wave radar and microwave marine radar, as well as an exploration of ongoing challenges in the field. It is a valuable resource for the radar and remote sensing communities.

HF Radar Remote Sensing of the Surface Currents in the Strait of Belle Isle

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Publisher : St. John's : Memorial University of Newfoundland, Centre for Cold Ocean Resources Engineering
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (165 download)

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Book Synopsis HF Radar Remote Sensing of the Surface Currents in the Strait of Belle Isle by : W. D. Winsor

Download or read book HF Radar Remote Sensing of the Surface Currents in the Strait of Belle Isle written by W. D. Winsor and published by St. John's : Memorial University of Newfoundland, Centre for Cold Ocean Resources Engineering. This book was released on 1985 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Summary of Research 1995

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ISBN 13 :
Total Pages : 588 pages
Book Rating : 4.:/5 (321 download)

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Book Synopsis A Summary of Research 1995 by : United States. Naval Postgraduate School, Monterey, CA.

Download or read book A Summary of Research 1995 written by United States. Naval Postgraduate School, Monterey, CA. and published by . This book was released on 1995 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Implementation of coastal current-mapping HF radar system progress report no. 1

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Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Implementation of coastal current-mapping HF radar system progress report no. 1 by : D. E. Barrick

Download or read book Implementation of coastal current-mapping HF radar system progress report no. 1 written by D. E. Barrick and published by . This book was released on 1976 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

HF Radar Technology Transfer Project

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Publisher : St. John's : Centre for Cold Ocean Resources Engineering, Memorial University of Newfoundland
ISBN 13 : 9780889010673
Total Pages : 136 pages
Book Rating : 4.0/5 (16 download)

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Book Synopsis HF Radar Technology Transfer Project by : Kenneth A. Butt

Download or read book HF Radar Technology Transfer Project written by Kenneth A. Butt and published by St. John's : Centre for Cold Ocean Resources Engineering, Memorial University of Newfoundland. This book was released on 1981 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Remote Sensing of Ocean Surface Current and Current Shear by HF Backscatter Radar

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ISBN 13 :
Total Pages : 158 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Remote Sensing of Ocean Surface Current and Current Shear by HF Backscatter Radar by : Eng-Chong Ha

Download or read book Remote Sensing of Ocean Surface Current and Current Shear by HF Backscatter Radar written by Eng-Chong Ha and published by . This book was released on 1979 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Doppler spectrum of radar return from the sea at HF contains two narrow lines displaced upward and downward from the carrier frequency, resulting from backscatter off ocean surface waves moving toward and away from the radar, respectively. These Bragg lines indicate resonant backscatter which occurs for the ocean waves of length one-half the radio wavelength. The phase velocity of these gravity waves consists of two components; the first is determined by the wavelength and the second by the current component in the direction of wave propagation averaged over depth with an exponential weighting function that has a characteristic scale proportional to the wavelength. The Doppler shift of the radar carrier is determined by the wave phase velocity. Its variation with carrier frequency is thus related to the vertical profile of the current component in the radar direction by a Laplace transform; therein lies the principle of radio measurement of ocean current and its vertical shear. Radio backscatter experiments to verify the feasibility of such measurements were conducted using the radar operating at four frequencies covering the range from 3 to 30 MHz. The depth-averaged radial current deduced from the centroid of the Doppler-shifted sea echo experiments at 6.8, 13.3, 21.7, and 29.8 MHz showed fluctuations on the order of 1 cm/sec superimposed on temporal trends that reached maximum values of about 40 cm/sec. It is concluded that multifrequency backscatter ground-wave radar at HF constitutes a powerful technique for mapping current and its vertical profile in the top few meters of the ocean.

The Encyclopedia of Oceanography

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Publisher :
ISBN 13 :
Total Pages : 1021 pages
Book Rating : 4.:/5 (637 download)

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Book Synopsis The Encyclopedia of Oceanography by : Rhodes Whitmore Fairbridge

Download or read book The Encyclopedia of Oceanography written by Rhodes Whitmore Fairbridge and published by . This book was released on 1969 with total page 1021 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Remote Sensing Ot the Ocean Surface Using MF/HF Radar

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (594 download)

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Book Synopsis Remote Sensing Ot the Ocean Surface Using MF/HF Radar by : W. A. Sandham

Download or read book Remote Sensing Ot the Ocean Surface Using MF/HF Radar written by W. A. Sandham and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advanced Geoscience Remote Sensing

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Publisher : BoD – Books on Demand
ISBN 13 : 9535115812
Total Pages : 284 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Advanced Geoscience Remote Sensing by : Maged Marghany

Download or read book Advanced Geoscience Remote Sensing written by Maged Marghany and published by BoD – Books on Demand. This book was released on 2014-06-05 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays, advanced remote sensing technology plays tremendous roles to build a quantitative and comprehensive understanding of how the Earth system operates. The advanced remote sensing technology is also used widely to monitor and survey the natural disasters and man-made pollution. Besides, telecommunication is considered as precise advanced remote sensing technology tool. Indeed precise usages of remote sensing and telecommunication without a comprehensive understanding of mathematics and physics. This book has three parts (i) microwave remote sensing applications, (ii) nuclear, geophysics and telecommunication; and (iii) environment remote sensing investigations.

Proceedings of the ... International Symposium on Remote Sensing of Environment

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Publisher :
ISBN 13 :
Total Pages : 754 pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Proceedings of the ... International Symposium on Remote Sensing of Environment by :

Download or read book Proceedings of the ... International Symposium on Remote Sensing of Environment written by and published by . This book was released on 2009 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: