Results 271 to 280 of about 16,664 (312)

Holes in the ocean: Filling voids in bathymetric lidar data

Computers & Geosciences, 2011
The mapping of coral reefs may be efficiently accomplished by the use of airborne laser bathymetry. However, there are often data holes within the bathymetry data which must be filled in order to produce a complete representation of the coral habitat. This study presents a method to fill these data holes through data merging and interpolation.
John B. Coleman, Xiaobai Angela Yao, Thomas R. Jordan, Marguerite Madden   +3 more
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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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Fast trend extraction and identification of spikes in bathymetric data

Computers & Geosciences, 2009
Average interpolating subdivision is a fast method for finding trends in data sets collected with multibeam echo sounders. By grouping a suitable number of pings together, a swath is sectioned into a series of geographical areas that are analyzed consecutively.
Jan Terje Bjørke, Stein Nilsen
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On the accuracy of digital bathymetric data

Journal of Geophysical Research: Solid Earth, 1993
The global 5‐arcmin gridded topography data ETOPO‐5 are based on contour maps rather than original soundings and have large errors. The artificial statistical distribution generated by digitizing contours makes these data unsuitable for use in regression models for depth‐age variations.
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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.
Christian Gout, Isabelle Ramière
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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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Analysis of the scale of errors in nearshore bathymetric data

Marine Geology, 2002
Most studies of nearshore hydrodynamics, sediment transport, and morphology focus on bathymetric variability within a narrow band of spatial and temporal scales. Typically, these studies rely on bathymetry estimates derived from field observations consisting of discrete samples in space and time with varying degrees of measurement error.
Nathaniel G. Plant, K.Todd Holland, Jack A. Puleo   +2 more
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Communication-constrained cooperative bathymetric simultaneous localisation and mapping with efficient bathymetric data transmission method

Journal of Navigation, 2022
AbstractBathymetric simultaneous localisation and mapping (SLAM) methods yield accurate navigation results for autonomous underwater vehicles (AUVs) and can construct consistent seabed terrain maps. Multiple independently working vehicles can complete tasks like surveying and mapping efficiently, which means cooperative bathymetric SLAM using multiple ...
Teng Ma, Wenjun Zhang, Ye Li, Yuxin Zhao, Qiang Zhang, Xiaojun Mei, Jiajia Fan   +6 more
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Analysis of Challenges in Remote Data Processing for Bathymetric Data

OCEANS 2018 MTS/IEEE Charleston, 2018
The term “telecommuting” or working remotely is an idea that has been around in forward-thinking companies since the creation of the internet. Early proponents promised office workers and managers a utopian symbiotic scenario where hyper-productive staff inhabit cafe corners and waterfront verandas in far flung locations while still working together to
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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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