Radar Scattering from Modulated Wind Waves

Radar Scattering from Modulated Wind Waves PDF Author: G.J. Komen
Publisher: Springer Science & Business Media
ISBN: 9400923090
Category : Science
Languages : en
Pages : 265

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Book Description
Ten years ago, de Loor and co-workers at TNO, The Netherlands, were the first to report bottom topography patterns in real aperture radar (RAR) images of the southern North Sea. At that time, this was a real puzzle. The skin depth of microwaves for sea water is only of the order of centimeters while the sea bottom is about 20 meters below the surface. Electromagnetic radiation therefore cannot probe the bottom directly. Similar phenomena were found in radar imagery from SEASAT and SIR-AlB synthetic aperture radars (SAR's) of Nantucket Shoals, the English Channel and many other coastal areas. Since then theory and ocean field experiments (Le., Phelps Bank, Georgia Straits, SARSEX, TOWARD, FASINEX, etc.) have advanced our understanding considerably. We now know that these surface signatures are the results of surface currents, perturbed by the bottom topography, which refract the propagation and modulate the energy of (short) surface waves so as to cause microwave backscatter power variations. Hence, any large scale ocean features containing nonuniform surface currents (i.e. internal waves, eddies, fronts, etc.) will cause similar manifestations in the radar imagery by means of current-wave-microwave interactions. Observations confirm this.

Radar Scattering from Modulated Wind Waves

Radar Scattering from Modulated Wind Waves PDF Author: G.J. Komen
Publisher: Springer Science & Business Media
ISBN: 9400923090
Category : Science
Languages : en
Pages : 265

Get Book Here

Book Description
Ten years ago, de Loor and co-workers at TNO, The Netherlands, were the first to report bottom topography patterns in real aperture radar (RAR) images of the southern North Sea. At that time, this was a real puzzle. The skin depth of microwaves for sea water is only of the order of centimeters while the sea bottom is about 20 meters below the surface. Electromagnetic radiation therefore cannot probe the bottom directly. Similar phenomena were found in radar imagery from SEASAT and SIR-AlB synthetic aperture radars (SAR's) of Nantucket Shoals, the English Channel and many other coastal areas. Since then theory and ocean field experiments (Le., Phelps Bank, Georgia Straits, SARSEX, TOWARD, FASINEX, etc.) have advanced our understanding considerably. We now know that these surface signatures are the results of surface currents, perturbed by the bottom topography, which refract the propagation and modulate the energy of (short) surface waves so as to cause microwave backscatter power variations. Hence, any large scale ocean features containing nonuniform surface currents (i.e. internal waves, eddies, fronts, etc.) will cause similar manifestations in the radar imagery by means of current-wave-microwave interactions. Observations confirm this.

Measuring the Oceans from Space

Measuring the Oceans from Space PDF Author: Ian S. Robinson
Publisher: Springer Science & Business Media
ISBN: 9783540426479
Category : Science
Languages : en
Pages : 752

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Book Description
This book covers the fundamental principles of measuring oceans from space, and also contains state-of-the-art developments in data analysis and interpretation and in sensors. Completely new will be material covering advances in oceanography that have grown out of remote sensing, including some of the global applications of the data. The variety of applications of remotely sensed data to ocean science has grown significantly and new areas of science are emerging to exploit the gobal datasets being recovered by satellites, particularly in relation to climate and climate change, basin-scale, air-sea interaction processes (e.g. El Nino) and the modelling, forecasting and prediction of the ocean.

Coastal Processes III

Coastal Processes III PDF Author: G. R. Rodriguez
Publisher: WIT Press
ISBN: 1845646983
Category : Technology & Engineering
Languages : en
Pages : 273

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Book Description
Containing papers presented at the Third International Conference on Physical Coastal Processes, Management and Engineering, this book examines coastal zone dynamics, which involve complex interactions between the atmosphere, ocean, and land. Management of coastal zones is dependent on a number of factors. Large temporal and spatial differences in air-sea exchange processes and wind strength and direction result from the complex interactions referred to above. Recreational and tourism activities make demands on coastal areas. With the number and frequency of extreme events due increases with climate change, their role in changing coastal zones also needs to be considered.The book considers also of these and covers such topics as: Wave modelling; Hydrodynamic modelling; Effects of climate change in coastal zones; Coastal defences; Energy recovery; Sediment transport and erosion; Pollution and water quality; Planning and beach design; Coastal morphology; Coastal processes and navigation; Coastal processes and GIS; Bio-physical coastal processes; Remote sensing; Systems approach; Coastal zone management; Impact and recovery from tsunamis; Impact of storms and extreme events; Ecosystems modelling; Coastal lagoons; Coastal oceanography; Socio-environmental issues.

Observing Our Environment from Space - New Solutions for a New Millennium

Observing Our Environment from Space - New Solutions for a New Millennium PDF Author: Gerard Begni
Publisher: CRC Press
ISBN: 1000446727
Category : Technology & Engineering
Languages : en
Pages : 456

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Book Description
This work reflects preoccupations with the threats posed to our environment due to climatic factors, major and natural hazards of all kinds and demographic influences. Topics covered include land surface processes, coastal zones and atmospheric risks.

Meteorological and Geoastrophysical Abstracts

Meteorological and Geoastrophysical Abstracts PDF Author:
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 480

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Book Description


Computer Vision - ECCV'98

Computer Vision - ECCV'98 PDF Author: Hans Burkhardt
Publisher: Springer Science & Business Media
ISBN: 9783540646136
Category : Computers
Languages : en
Pages : 902

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Book Description
This two-volume set constitutes the refereed proceedings of the 5th European Conference on Computer Vision, ECCV'98, held in Freiburg, Germany, in June 1998. The 42 revised full papers and 70 revised posters presented were carefully selected from a total of 223 papers submitted. The papers are organized in sections on multiple-view geometry, stereo vision and calibration, geometry and invariances, structure from motion, colour and indexing, grouping and segmentation, tracking, condensation, matching and registration, image sequences and video, shape and shading, motion and flow, medical imaging, appearance and recognition, robotics and active vision, and motion segmentation.

Computer Vision - ECCV 90

Computer Vision - ECCV 90 PDF Author: Olivier Faugeras
Publisher: Springer Science & Business Media
ISBN: 9783540525226
Category : Computers
Languages : en
Pages : 638

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Book Description
A collection of papers on computer vision research in Euro- pe, with sections on image features, stereo and reconstruc- tion, optical flow, motion, structure from motion, tracking, stereo and motion, features and shape, shape description, and recognition and matching.

The Air-Sea Interface

The Air-Sea Interface PDF Author: M. A. Donelan
Publisher: University of Miami Iberian Studies Institute
ISBN:
Category : Science
Languages : en
Pages : 832

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Book Description


Energy Research Abstracts

Energy Research Abstracts PDF Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 564

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Book Description


Automatic Detection Algorithms of Oil Spill in Radar Images

Automatic Detection Algorithms of Oil Spill in Radar Images PDF Author: Maged Marghany
Publisher: CRC Press
ISBN: 0429629095
Category : Science
Languages : en
Pages : 310

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Book Description
Synthetic Aperture Radar Automatic Detection Algorithms (SARADA) for Oil Spills conveys the pivotal tool required to fully comprehend the advanced algorithms in radar monitoring and detection of oil spills, particularly quantum computing and algorithms as a keystone to comprehending theories and algorithms behind radar imaging and detection of marine pollution. Bridging the gap between modern quantum mechanics and computing detection algorithms of oil spills, this book contains precise theories and techniques for automatic identification of oil spills from SAR measurements. Based on modern quantum physics, the book also includes the novel theory on radar imaging mechanism of oil spills. With the use of precise quantum simulation of trajectory movements of oil spills using a sequence of radar images, this book demonstrates the use of SARADA for contamination by oil spills as a promising novel technique. Key Features: Introduces basic concepts of a radar remote sensing. Fills a gap in the knowledge base of quantum theory and microwave remote sensing. Discusses the important aspects of oil spill imaging in radar data in relation to the quantum theory. Provides recent developments and progresses of automatic detection algorithms of oil spill from radar data. Presents 2-D oil spill radar data in 4-D images.