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IEEE Journal of Oceanic Engineering

Issue 5 • Date December 1984

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Displaying Results 1 - 19 of 19
  • [Front cover and table of contents]

    Publication Year: 1984, Page(s): 0
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  • Guest editors' preface

    Publication Year: 1984, Page(s):289 - 290
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  • A deterministic, coherent, and dual-polarized laboratory study of microwave backscattering from water waves, Part I: Short gravity waves without wind

    Publication Year: 1984, Page(s):291 - 308
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1919 KB)

    The fundamental mechanisms of microwave backscattering from mechanically generated short gravity waves with 25-cm wavelength have been investigated in the laboratory using a CW coherent dual-polarized focused radar operating at 9.23 GHz and a laser scanning slope gauge which provides an almost instantaneous profile of the water surface while scattering is taking place. The surface was also monitor... View full abstract»

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  • Surveys in fluid mechanics

    Publication Year: 1984, Page(s): 389
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  • [Back cover]

    Publication Year: 1984, Page(s): c4
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  • Short gravity and capillary wave spectra from tower-based radar

    Publication Year: 1984, Page(s):317 - 324
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    Radar backscatter measurements made as part of Project MARSEN in 1979 from the Noordwijk tower off the Dutch coast are used to calculate apparent ripple (capillary and short-gravity wave) spectra by inverting the small-perturbation scattering theory. The measurements were made at 10 and 15 GHz for angles of incidence ranging from 20\deg to View full abstract»

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  • The complex dielectric constant of snow at microwave frequencies

    Publication Year: 1984, Page(s):377 - 382
    Cited by:  Papers (54)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The complex dielectric constant of snow has been measured at microwave frequencies. New and old snow at different stages of metamorphosis have been studied. The results indicate that the complex dielectric constant is practically independent of the structure of snow. For dry snow, the dielectric constant is determined by the density. For wet snow, the imaginary part and the increase of the real pa... View full abstract»

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  • Polarization effects in seaice signatures

    Publication Year: 1984, Page(s):333 - 338
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    Observations of microwave emissivities of multiyear sea ice showed anomalies at horizontal polarization in the frequency range from 5 to 35 GHz during the Norwegian Remote Sensing Experiment (NORSEX) [1] in September and October 1979. The effect can be explained by layers of solid ice present in the dry snow cover throughout the NORSEX area. A special experiment made on a typical multiyear floe co... View full abstract»

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  • Retrieval of snow water equivalent from Nimbus-7 SMMR data: Effect of land-cover categories and weather conditions

    Publication Year: 1984, Page(s):372 - 376
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    The effect of the four major surface types in Finland (forests, boglands, farmlands, and water (ice)) on the microwave brightness temperature of snow-covered areas is investigated. Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) data are employed to derive the response of each surface type. An algorithm to retrieve the water equivalent of snow cover from Nimbus-7 SMMR data is tested in ... View full abstract»

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  • Distribution of electrical parameters in upper layers of shelf, land, and fast ice near Novolazarevskaya station

    Publication Year: 1984, Page(s):360 - 365
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The paper illustrates the results of an experimental investigation of electrical parameters of glacier ice and first-year fast ice in the VHF frequency band, at the Antarctic Station Novolazarevskaya in the 27th Soviet Antarctic Expedition (SAE) (1982-1983). Distributions of electrical parameters in the glaciers are obtained for ice, firn-ice, and cold-firn zones. These zones differ from each othe... View full abstract»

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  • Microwave dielectric properties of surface snow

    Publication Year: 1984, Page(s):366 - 371
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    First results from a recently developed surface sensor for measuring the dielectric constant of snow at about 1 GHz are reported together with ground-based measurements of brightness temperatures between 4.9 and 94 GHz. The data are used to derive spectra of complex dielectric constants of wet snow for frequencies between 1 and 100 GHz. The result is simple: Debye relaxation spectra with a constan... View full abstract»

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  • Microwave signatures of the sea ice in the east Greenland current

    Publication Year: 1984, Page(s):339 - 343
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    Airborne microwave radiometer measurements at 5, 17, and 34 GHz have been carried out over the East Greenland Current. Sea ice signatures have been established for some of the basic ice types like first-year ice and multiyear ice. Other signatures have been experienced like that of presumably very old arctic ice and signatures associated more with the snow cover on the ice than with the ice itself... View full abstract»

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  • The analysis of backscattering properties from SAR data of mountain regions

    Publication Year: 1984, Page(s):347 - 355
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1232 KB)

    Possibilities and problems for the extraction of backscattering coefficients from airborne and spaceborne Synthetic Aperture Radar (SAR) data are discussed. Corrections for system errors and for imaging geometry are described. Examples are given for airborne SAR data acquired in the X - and C -bands over a test site in the Au... View full abstract»

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  • Simultaneous radiometric and radar altimetric measurements of sea microwave signatures

    Publication Year: 1984, Page(s):325 - 328
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    We discuss the advantages provided by the combined use of a polarization microwave radiometer and a short-pulse radar altimeter for sea roughness monitoring. A brief analysis of the potential of each device taken separately is carried out, which shows the advisability of their combination. The method and the results of the experiment performed with an airborne K...
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  • Effect of a snow cover on microwave backscatter from sea ice

    Publication Year: 1984, Page(s):383 - 388
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    The effect of a snow cover on sea ice upon radar backscatter at microwave frequencies ( X - and Ku -baud) can be important. The effect of scattering from the snow cover on the \sigma \deg of first-year ice is shown to be severe (5 cm of dry snow can raise View full abstract»

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  • Radiophysical techniques employed for sea ice investigations

    Publication Year: 1984, Page(s):329 - 332
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    Experimental data on emissivity and backscattering properties of sea ice are presented. Measurements were conducted in East and West Soviet regions of the Arctic Ocean during recent years with the IL-18 airborne laboratory and the AN-2 aircraft. The equipment installed on board the aircraft provided simultaneous X -band side looking airborne radar (SLAR) images ... View full abstract»

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  • On the ability of microwave radiometers to resolve spatially underlying surfaces and on methods to improve it

    Publication Year: 1984, Page(s):356 - 359
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    We discuss methods to improve the ability of microwave radiometers to resolve buried objects. The technique that we expound is based on the effects of instrument polarization. A choice of polarization is made, depending on the characteristics of two objects under survey, in order to maximize probability of correct decision on the object type. The analytical expressions that we have obtained are ap... View full abstract»

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  • Interpretation of aircraft sea ice microwave data

    Publication Year: 1984, Page(s):344 - 346
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    This paper deals with the Bayesian classifier and its application for a radiometric discrimination of sea ice types. Microwave data used for these studies have been acquired from a dual-frequency passive nadir-looking radiometer which records radiation from earth at wavelengths of 1.6 and 3.2 cm. In addition, a photographic system and IR radiometer operating at ... View full abstract»

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  • Tower-based backscatter measurements of the sea

    Publication Year: 1984, Page(s):309 - 316
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    In September 1979, the radar scattering coefficient ( \sigma \deg ) was measured at platform Noordwijk in the North Sea 10 km off the Dutch coast. This was done in conjunction with similar measurements by Dutch and French investigators as part of Project MARSEN (Marine Remote Sensing). Our measurements were made with vertical and horizontal polarizations, in ... View full abstract»

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Aims & Scope

The IEEE Journal of Oceanic Engineering (ISSN 0364-9059) is the online-only quarterly publication of the IEEE Oceanic Engineering Society (IEEE OES). The scope of the Journal is the field of interest of the IEEE OES, which encompasses all aspects of science, engineering, and technology that address research, development, and operations pertaining to all bodies of water. This includes the creation of new capabilities and technologies from concept design through prototypes, testing, and operational systems to sense, explore, understand, develop, use, and responsibly manage natural resources.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
N. Ross Chapman
School of Earth & Ocean Sciences
University of Victoria
3800 Finnerty Road
Victoria, BC V8P 5C2 Canada
chapman@uvic.ca