Results 271 to 280 of about 56,657 (315)

Surface approximation from rapidly varying bathymetric data

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
In this article, we introduce a surface approximation technique to address the problem of fitting a surface to a given set of curves. The problem of constructing a smooth surface from a given set of curves appears in many instances in geophysics and geology.
C. Gout, I. Ramiere
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Bathymetric Data Reduction Subsystem.

1979
Abstract : The subject final technical report covers Phase I - the Basic Operating Capability of the Bathymetric Data Reduction Subsystem. The report discusses and evaluates problems encountered during Phase I and the solutions which Synectics Corporation provided to these problems. There are four parts to this report.
R. Howarth, P. Bell
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SPOT satellite data analysis for bathymetric mapping

Proceedings 2000 International Conference on Image Processing (Cat. No.00CH37101), 2002
This paper presents the determination of bathymetric maps from the analysis of multispectral SPOT images. To this end, we have developed a multispectral segmentation method based on a hierarchical Markovian modeling including the unsupervised estimation of the model parameters.
C. Collet, J.-N. Provost, P. Rostaing, P. Perez, P. Bouthemy   +4 more
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The national geophysical data center bathymetric program

Marine Geodesy, 1992
Abstract The National Geophysical Data Center's (NGDC's) mission is data management in the broadest sense, playing a role in the nation's research into the environment and providing data to a wide group of users. NGDC also operates components of the International Council of Scientific Unions (ICSU) World Data Center A. The Marine Geology and Geophysics
Maureen R. Kenny, Kurt E. Brown
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Clustering Bathymetric Data for Electronic Navigational Charts

Journal of Navigation, 2016
An electronic navigational chart is a major source of information for the navigator. The component that contributes most significantly to the safety of navigation on water is the information on the depth of an area. For the purposes of this article, the authors use data obtained by the interferometric sonar GeoSwath Plus. The data were collected in the
Marta Wlodarczyk–Sielicka, Andrzej Stateczny   +1 more
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Bathymetric data held at the national geophysical data center

Marine Georesources & Geotechnology, 1994
The U.S. National Geophysical Data Center (NGDC), collocated with the World Data Center A for Marine Geology and Geophysics and the International Hydrographic Organization (IHO) Data Center for Digital Bathymetry, operates and maintains several large bathymetric databases.
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Computer contouring of deep sea bathymetric data

Marine Geology, 1969
Abstract A computer program has been used to construct a contour map of the crest of the Mid-Atlantic Ridge between 22° and 23°N. The computer map is produced more efficiently than a manually contoured chart and yields an acceptable representation of sea-floor topography free of interpretive bias.
George Swindle, Tjeerd H. Van Andel
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Bathymetric analysis of in-water upwelling-radiance data

SPIE Proceedings, 1990
In June 1988, the Naval Ocean Research and Development Activity (NORDA) collected some "in-water" data using its Towed Underwater Pumping System (TUPS) in the near-shore waters off St. Andrews State Park, Shell Island, Florida. These in situ data include latitude; longitude; depth in meters; narrow-band upwelling at 465 nm, 507 nm, and 532 nm; broad-
Temple H. Fay, H. V. Miller, R. K. Clark
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Coastal Bathymetric and Charting Digital Data Base

Offshore Technology Conference, 1978
ABSTRACT Bathymetric and bottom data are a primary tool of marine commerce, industry, and research. Traditionally, these data have been shown on nautical and bathymetric charts produced by the National Oceanic and Atmospheric Administration's (NOAA) National Ocean Survey (NOS).
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Mapping Bathymetric Slopes from Bathymetry Data

1993
Abstract : The objectives of this work were to develop slope calculation and mapping algorithms for use with Sea Beam bathymetry data. The ability to quantify and map in geographic coordinates apparent bottom slopes, as measured by the sonar in a given region, provides important clues for the level of acoustic bottom reverberation that can be expected ...
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