Search CMGP

Coastal and Marine Geology Program > Online Science Resource Locator > Sonar Mapping - East Coast

Sonar Mapping - East Coast

Online Science Resource Locator

Topic:

Region:

Content Type:

Help!
how to use this

Have an Earth Science question?
Ask-A-Geologist!

Sonar Mapping:
about this Topic

Sonar mapping of the sea floor provides CMG researchers with very useful data. Some sonar systems map the topography of the sea floor by recording large swaths of depth measurements. Others collect information useful in determining the geologic makeup of the sea floor and the sub-surface structure.

Content Types:

Project Information
Educational Materials

What
are
these?

Photographs
Movies
Maps
Publications
Data Sets

Items below are listed from most recently updated to least recently updated.

These are results 1 through 25 of 31 matches.

Publication
Predicting the Long-Term Fate of Sediments and Contaminants in Massachusetts Bay - USGS Fact Sheet 172-97
Description: Contaminants have accumulated in the sediments of Massachusetts Bay, typical of many coastal areas near major metropolitan centers that have been used for waste disposal since colonial times. Developing an understanding of where and why contaminants accumulate is essential for making informed management decisions about uses of these coastal areas and for developing sound strategies for monitoring environmental change.
updated: 2004-03-02 pages include:

Publication
Sedimentary Environments in Long Island Sound: A Guide to Sea-Floor Management in a Large Urbanized Estuary - USGS Fact Sheet 041-98
Description: Bottom sedimentary environments, defined by sidescan-sonar patterns, indicate where sea-floor sediments are moved and deposited in the Long Island Sound estuary. The patchy distribution of environments, which reflects both regional and local changes in geologic and oceanographic conditions, provides a predictive framework for those concerned with the management and utilization of the sea floor in this urbanized area.
updated: 2004-03-02 pages include:

Publication
Gas (Methane) Hydrates -- A New Frontier - USGS Fact Sheet
Description: Methane trapped in marine sediments as a hydrate represents such an immense carbon reservoir that it must be considered a dominant factor in estimating unconventional energy resources; the role of methane as a 'greenhouse' gas also must be carefully assessed.
updated: 2004-03-02 pages include:

Publication
Maps Showing the Stratigraphic Framework of South Carolina's Long Bay from Little River to Winyah Bay
Description: South Carolina's Grand Strand is a heavily populated coastal region that supports a large tourism industry. Like most heavily developed coastal communities, the potential for property damage and lost revenues associated with coastal erosion and vulnerability to severe storms is of great concern. In response to these concerns, the US Geological Survey (USGS) and the South Carolina Sea Grant Consortium have chosen to focus upon the Grand Strand and immediately adjacent Long Bay as a portion of Phase II of the South Carolina/Georgia Coastal Erosion Study (SC/GCES).
updated: 2004-03-01 pages include:

Map
High-resolution seismic-reflection surveys in the nearshore of outer Cape Cod, Massachusetts, U.S. Open-File Report 03-235, Title Page
Description: High-Resolution Seismic-Reflection Surveys in the Nearshore of Outer Cape Cod, Massachusetts
updated: 2003-12-01 pages include:

Map
Topography, shaded relief, and backscatter intensity of the
Description: This CD_ROM presents maps of the sea floor topography, shaded relief, and backscatter intensity of the Hudson Shelf Valley, located offshore of New York and New Jersey, at a scale of 1:150,000 based on multibeam echo-sounder data. The multibeam surveys were conducted aboard the vessel Frederick G. Creed in fall 1996, 1998, and spring 2000. The maps and discussion are presented on two sheets in PDF format. The discussion is also presented in PDF format, with links to individual figures and tables on the map sheet.
updated: 2003-12-01 pages include:

Map
Oceanographic Observations, Hudson Shelf Valley, U.S. Geological Survey Open-File Report 02-217, Title Page
Description: This data report presents oceanographic observations made in the Hudson Shelf Valley, offshore of New York, between December 1999 and April 2000
updated: 2003-09-11 pages include:

Map
High-Resolution Quaternary Seismic Stratigraphy of the New York Bight Continental Shelf, USGS Open-File Report 02-152, Title Page
Description: This USGS Open-File Report describes the Quaternary evolution of the New York Bight region, based on geophysical data acquired in 1995 and 1996.
updated: 2003-08-14 pages include:

Publication
USGS Open File Report 01-123: Title page
Description: USGS high resolution seismic data for northern North Carolina coastal system
updated: 2002-07-11 pages include:

Publication
U.S. Geological Survey - Historic Area Remediation Site (HARS) Web Page
Description: Three multibeam echosounder surveys were carried out to map the topography and surficial geology of the Historic Area Remediation Site (HARS) located offshore of New York City. The surveys were conducted November 23 - December 3, 1996, October 26 - November 11, 1998, and April 6 - 30, 2000. This report presents maps showing topography, shaded relief, and backscatter intensity (a measure of sea floor texture and roughness) at a scale of 1:25,000. Comparison of the topography and backscatter intensity from the three surveys show changes in topography and surficial sediment properties resulting from placement of dredged material in 1996 and 1997 prior to closure of the Mud Dump Site, as well as placement of capping material for remediation of the HARS.
updated: 2002-07-09 pages include:

Publication
USGS Fact Sheet 001-02: Mapping the Sea Floor of the Historic Area Remediation Site Offshore of New York City
Description: Mapping the Sea Floor of the Historic Area Remediation Site Offshore of New York City
updated: 2002-05-01 pages include:

Publication
Multibeam Bathymetric and Backscatter Maps of the Upper Hudson Shelf Valley and Adjacent Shelf, Offshore of New York
Description: About aproject to map the surficial geology and subsurface stratigraphy of the Hudson Shelf Valley and adjacent continental shelf from its head near New York Harbor to where it crosses the outer. The northwesterly area of the survey encompasses a region of the shelf that may provide sediment to the valley as well as the principal disposal sites used since the 1800's.
updated: 2002-04-24 pages include:

Publication
Sidescan-Sonar Imagery of the Shoreface and Inner Continental Shelf, Wrightsville Beach, North Carolina
Description: The geologic framework and surficial morphology of the shoreface and inner shelf off Wrightsville Beach, North Carolina, were mapped using high-resolution sidescan-sonar, bathymetric, and seismic-reflection surveying techniques, a suite of over 200 diver-vibracores, and extensive sea-floor observations by divers. The inner shelf is a sediment-starved, active surface of marine erosion; modern sediments, where present, form a thin, patchy veneer blanketing Tertiary and Quaternary units.
updated: 2002-04-24 pages include:

Research Project
Stellwagen Bank National Marine Sanctuary Region off Boston, Massachusetts, USGS National Geologic Studies of Benthic Habitats, Northeastern United States
Description: USGS national geologic studies of benthic habitats, northern United States; Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts
updated: 2002-04-24 pages include:

Research Project
USGS Studies in Long Island Sound: Geology, Contaminants, and Environmental Issues
Description: Long Island Sound is a major coastal estuary near the New York-Connecticut metropolitan area. More than eight million people live in its watershed. Due to the enormous population, the Sound is used heavily and its sea floor has been impacted by human activities. There are many benthic habitats in the Sound that support large commercial and recreational fisheries. Sediments of the Sound are a sink for wastes and contaminants from various sources such as wastewater treatment plants, urban and agricultural runoff, and waste disposal.
updated: 2002-04-24 pages include:

Research Project
The Coastal Sedimentary System: Northern North Carolina
Description: The USGS, in collaboration with the State of North Carolina and university researchers, is studying the coastal sedimentary system of northern North Carolina. The primary objective is to map the regional sedimentary framework of the inner shelf in order to understand recent coastal processes, including erosion and the impacts of shoreline change.
updated: 2002-04-24 pages include:

Research Project
Boston Harbor/ Massachusetts Bay Studies
Description: Environmental effects of the Boston sewage outfall tunnel are being studied using computer simulations of ocean circulation and dilution of sewage from the tunnel, also mapping and sediment analyses to find the pathways and ultimate repositories of contaminants from the Boston Metropolitan area, and monitoring to establish a baseline of contaminant levels in sediments and to document their natural variability.
updated: 2002-04-23 pages include:

Publication
Seafloor Characterization Offshore New York-New Jersey Metropolitan Area using sidescan sonar
Description: A preliminary synthesis of systematic high-resolution mapping of the sea floor in the New York Bight Apex, using sidescan-sonar and seismic-reflection profiles. The survey provides a new and detailed view of the sea floor, and a new framework for understanding the regional sediment transport system of the New York Bight.
updated: 2002-04-23 pages include:

Publication
Long Island Sound Environmental Studies
Description: Reports and maps on acoustic and textural features of Long Island Sound bottom sediments; Sidescan-sonar imagery of areas off Hammonasset Beach state park, Norwalk, Niantic Bay, Milford, Fishers Island Sound, Falkner Island, New Haven, New London, CT, and Roanoke Pt., NY. Also, articles on a surficial sediment data, benthic communities and contaminants, and currents, and a bibliography.
updated: 2002-04-23 pages include:

Publication
Georeferenced Sea-Floor Mapping and Bottom Photography in Long Island Sound
Description: Extensive information in 12 separate chapters on geology (including late-Pleistocene stratigraphy, and a free-air gravity anomaly map indicative deep substructure), surface sediments, organic carbon, benthic enviroments, megafaunal environments, contaminanats such as metals, mercury, and a bacterial indicator of human pollution; GIS referenced mapping data, and a collection of bottom photographs; Environmental changes 1940s to 1990s.
updated: 2002-04-23 pages include:

Publication
Seafloor Sediment Distribution Off Southern Long Island, New York
Description: The late Holocene evolution of the Fire Island barrier-island is linked directly to the geologic framework of the inner-continental shelf. Mapping results show that the modern physiography of the inner-continental shelf off southern Long Island is an expression of antecedent geology and glacial history, as well as oceanographic processes acting on the sea floor during Holocene marine transgression. The upper surface of the Cretaceous strata provided the foundation for deposition of Quaternary sediment and formed the core of a subaerial headland off Watch Hill during times of lower sea level. The modern sediment deposit was formed from erosion of both the headland areas east of Southampton and off Watch Hill and the inner-continental shelf during Holocene marine transgression.
updated: 2002-04-23 pages include:

Publication
Stellwagen Bank National Marine Sanctuary - off Boston MA - Sea Floor topographic contours maps and perspective views
Description: A multibeam echo sounder aboard the Canadian Hydrographic Survey vessel Frederick G. Creed mapped the Stellwagen bank area (covering 1100 sq. nautical miles). Topographic contour maps and perspective maps -displayed as sun-illuminated seabed imagery - show sea floor topography (scale of 1:25,000) show the complex sea floor created by glacial erosion, deposition, and subsequent wave and current action. GIS data of the maps are included.
updated: 2002-04-22 pages include:

Publication
USGS Fact Sheet 136-01: Sand Distribution on the Inner Shelf South of Long Island, New York
Description: Sand Distribution on the Inner Shelf South of Long Island, New York
updated: 2002-03-29 pages include:

Publication
U.S. Geological Survey Open-File Report 00-410
Description: Sea floor features of the Stellwagen Bank National Marine Sanctuary region at a scale of 1:60,000. The maps depict topography, sun-illuminated (shaded relief) topographic imagery, and combined imagery of sun-illuminated sea floor topography and backscatter intensity
updated: 2002-03-22 pages include:

Research Project
U.S. Geological Survey Studies in the New York Bight
Description: Since 1992, the U.S. Geological Survey`s Coastal and Marine Geology Program has been conducting studies offshore of New York designed to map and characterize the sea floor, to understand the transport and fate of sediments and associated pollutants, to map the inner shelf and sand deposits along the southern shore of Long Island, and to understand the recent geologic history. A long-term goal of these geological studies is to develop predictive models and geologic information to guide research and sustainable use of the coastal ocean.
updated: 2001-12-14 pages include:

These are results 1 through 25 of 31 matches.

Search all individual CMGP webpages for these terms - Sonar Mapping, East Coast:
Search all webpages

Coastal and Marine Geology Program > Online Science Resource Locator > Sonar Mapping - East Coast