Results 221 to 230 of about 26,999 (267)

Seabed topographic classification and mapping

OCEANS 96 MTS/IEEE Conference Proceedings. The Coastal Ocean - Prospects for the 21st Century, 2002
The Naval Oceanographic Office (NAVOCEANO), in response to the Chief of Naval Operations' and Commandant of the Marine Corps' white papers entitled "...From the Sea" and "Forward...From the Sea", has focused its effort on providing the fleet with environmental data gleaned from the littoral ocean regions.
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Combined underwater acoustic and radar instruments for assessing fish near seabed and mapping seabed

Proceedings of the 2002 Interntional Symposium on Underwater Technology (Cat. No.02EX556), 2003
An underwater acoustic and marine radar survey was conducted for the assessment of fish near the seabed and for seabed mapping. For the purpose, an underwater acoustic instrument (split beam echo sounder), and ground penetrating radar (GPR) were used around Seribu Island, Jakarta Bay.
H. Manik, M. Furusawa
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Seabed mapping of tropical tidal channels, NE Brazil

2020
<p>The Galinhos-tidal-channel system is located in the Brazilian equatorial margin, northeastern coast of Rio Grande do Norte State. The economic importance of the region began around 1600s and continues until today with salt exports, later shrimp farms, handmade fishing, oil and gas industry, ecotourism
Andressa Lima Ferreira, Helenice Vital, Moab Gomes, Andre Aquino da Silva, Yoe Perez   +4 more
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Under-ice seabed mapping with AUVs

OCEANS 2009-EUROPE, 2009
In the past few years, there has been increasing interest in the use of the Arctic, both as an ocean waterway and as a source of natural resources and food. In support of these objectives, scientific studies and research to characterise the Arctic environment are being initiated. At the same time, northern nations have begun to collect the data that is
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Spatial uncertainty estimation techniques for shallow coastal seabed mapping.

2023
Techniques for seabed habitat mapping have developed considerably over the past 10 years, principally through advances in acoustic technologies and tools for improved spatial analysis. The increasing need for information on the distribution and structure of seabed habitats in coastal waters (< 50 m deep) has developed in Australia due to increasing ...
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Echo Mapper, an Air-Transportable Seabed Mapping AUV

OCEANS 2007, 2007
The Echo Mapper AUV, based on a Bluefin 21 vehicle integrated with a full suite of swath sonar mapping systems, is now being used for commercial surveys. The small size of this vehicle enables it to be easily transported by air to remote locations for small projects where it can be easily mobilized onto local vessels-of-opportunity.
Donald M. Hussong, J. Grant Blackinton
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High-Resolution Seabed Mapping: New Developments

Offshore Technology Conference, 1984
ABSTRACT This paper describes several new developments in the evolution of side scan sonar sea bed mapping systems. A new advanced microprocessor-controlled tuning improves record quality. New deep tow vehicles allow for relatively high speed medium depth towing or low speed full ocean depth towing.
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Multibeam Echo-sounder System for Seabed Mapping

1986
Single-beam echo-sounder sidescan sonar is currently the main sensor type being used for seabed mapping and surveying. In the future, new developments within high-resolution wide-swathe covering sensors will be available, and will to a large extent replace existing instrumentation.
Magne Glittum, Øivind Heier, Freddy Pøhner, Karstein Vestgård   +3 more
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Benthic habitat mapping with acoustic seabed classification

MTS/IEEE Oceans 2001. An Ocean Odyssey. Conference Proceedings (IEEE Cat. No.01CH37295), 2002
Thematic maps of acoustic diversity resulting from acoustical seabed classification surveys are usually presented as track lines of color-coded classes. These classes can later be calibrated using a bottom sampling system and, perhaps, underwater video or biological sampling.
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Mapping seabed variability: Rapid surveying of coastal regions

The Journal of the Acoustical Society of America, 2006
Directional broadband reverberation can be exploited for rapidly probing seabed variability over large areas O (103–104)km2; the data need not be calibrated. Seabed variability thus mapped inherently combines spatial variability in geoacoustic properties that control reflection and those that control scattering.
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