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Side-scan sonar methods
Techniques of collecting data from the sea floor by towing a vehicle with SOund NAvigation and Ranging systems projecting beams of sound waves into the underwater environment. Data are collected from the returning echoes (backscatter) as the sound waves are relected back from the sea floor or sediments.
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Gulf of the Farallones regional bathymetry and sidescan-sonar digital mosaics [New Window]
Remotely sensed image products covering the Gulf of the Farallones region west of San Francisco.
Long Island Sound sidescan sonar mosaics [New Window]
Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor.
Coastal and Marine Geology Program [New Window]
Home page for Coastal and Marine Geology with links to topics of interest (sea level change, erosion, corals, pollution, sonar mapping, and others), Sound Waves monthly newsletter, field centers, regions of interest, and subject search system.
Continental shelf GIS for the Monterey Bay National Marine Sanctuary [New Window]
Interactive maps of the continental shelf of the Monterey Bay National Marine Sanctuary with GIS layers for sediment data, bathymetry, geology, bathymetry, sonar imagery, and tectonics.
GLORIA Mapping Program [New Window]
GLORIA is a digital sidescan sonar capable of producing digital image maps of the sea floor from reflected sound waves. Site includes description of digital processing, mosaicking, and links to samples of image maps.
Grand Canyon studies: using ocean-research techniques to study a river system [New Window]
Brief review of studies with sidescan sonar on sediment in the Grand Canyon as part of research on the changes brought about by the Glen Canyon Dam and the results gathered from a 1996-controlled flood experiment with links to related information.
Gulf of Maine internet map [New Window]
Gulf of Maine regional overview interactive map depicting research activities of the U.S. Geological Survey showing surficial sample sites, bathymetry, continental margin and coastal areas.
Gulf of the Farallones disposal issues: disposal and waste disposal [New Window]
Study of the effects on the Gulf of the Farallones National Marine Sanctuary resulting from the disposal of San Francisco dredged material and barrels of low-level radioactive waste with links to publications and atlas with digital images.
Long Island Sound [New Window]
Long Island Sound interactive map with GIS datasets and sonar imagery.
Louisiana continental slope [New Window]
Louisiana continental slope interactive map with GIS datasets and sonar imagery.
Mississippi Fan internet map [New Window]
Mississippi River alluvial fan interactive map with GIS data and imagery depicting core sites, depositional and channel interpretation, Gloria and SeaMarc datasets.
Oculina Bank - geology of a deep-water coral reef habitat off Florida [New Window]
Brief report on sidescan sonar data, sediment sampling, and submersible and video photography studies of destruction of deep-water coral pinnacles where fish spawn off east-central Florida in the Oculina Bank in order to restore and protect the habitat.
Sea-floor mapping technology [New Window]
Integrated shipboard data collection, processing, and archival system for digital sidescan sonar and seismic data used in mapping the inner continental shelf.
Sea-floor morphology between Año Nuevo and Santa Cruz, California [New Window]
Report with preliminary sea floor map displaying submarine rock exposures found along the northern part of Monterey Bay National Marine Sanctuary, extent based on side-scan sonar records, seismic-reflection records, and underwater video.
Seafloor image map of the Monterey Bay region: USGS Monterey Bay National Marine Sanctuary Project [New Window]
Monterey Bay sea floor image maps.
U.S. Atlantic East Coast [New Window]
Atlantic East Coast interactive map with GIS datasets and sonar imagery.
U.S. Gulf of Mexico Shoreline Change [New Window]
Interactive map of the Gulf of Mexico coast reflecting shoreline changes.
U.S. Pacific West Coast internet map server [New Window]
Interactive map of the U.S. Pacific West Coast with data layers of Gloria sidescan data, multibeam backscatter and shaded relief imagery.
West-central Florida erosion study [New Window]
West central Florida erosion interactive map with GIS datasets to download including geologic interpretative layers, samples, bathymetry, and imagery.
Whales and walrus: tillers of the seafloor [New Window]
Report on sea floor marks in the Northeast Bering Sea and Chukchi Sea that were identified as pits and furrows caused by whales and walruses in the process of feeding on bottom crustaceans.


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