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Publication |
Description |
| Sea-floor geology of Long Island Sound north of Duck Pond Point, New York; 2012, U.S. Geological Survey Open-File Report: 2011-1149 |
The U.S. Geological Survey, the National Oceanic and Atmospheric Administration (NOAA), and the Connecticut Department of Environmental Protection are mapping the sea floor in coastal areas of the northeastern United States. As part of the project, more than 100 square kilometers of multibeam-echosounder data, 23 sediment samples, bottom video, and 86 still photographs were obtained from an area in Long Island Sound north of Duck Pond Point, New York, in the study area of NOAA survey H11999. This report delineates the sediment types and sea-floor features found within this area in order to better understand the sea-floor processes occurring in this part of Long Island Sound. The sea floor in the study area is dominated by ubiquitous sand-wave fields and three northeast-southwest trending bathymetric depressions. Barchanoid and transverse sand waves, including sinusoidal, bifurcating, arced, and straight-crested morphologies, are variably present. Asymmetrical sand-wave profiles indicate a westward to southwestward direction of sediment transport in most of the study area; current ripples and megaripples on the stoss slopes of the sand waves indicate transport is ongoing. The majority of the sediment on the sea floor is sand, although bouldery, gravelly, and muddy sediments are also present. Gray, cohesive mud crops out on the walls of some of the scour depressions associated with the troughs of large sand waves. Clasts of the muddy sediment scattered on the sea floor around the depressions demonstrate the intensity of the scour and suggest erosion of the underlying distal deltaic sediments. |
| Sea-floor geology and sedimentary processes in the vicinity of Cross Rip Channel, Nantucket Sound, offshore southeastern Massachusetts; 2012, U.S. Geological Survey Open-File Report: 2011-1222 |
Gridded multibeam bathymetry covers approximately 10.4 square kilometers of sea floor in the vicinity of Cross Rip Channel in Nantucket Sound, offshore southeastern Massachusetts. Although originally collected for charting purposes during National Oceanic and Atmospheric Administration hydrographic survey H12007, these acoustic data, and the sea-floor sediment sampling and bottom photography stations subsequently occupied to verify them, show the composition and terrain of the seabed and provide information on sediment transport and benthic habitat. This report is part of an expanding series of cooperative studies by the U.S. Geological Survey, National Oceanic and Atmospheric Administration, and Massachusetts Office of Coastal Zone Management that provide a fundamental framework for research and resource-management activities (for example, windfarms, pipelines, and dredging) along the inner continental shelf offshore of Massachusetts. |
| Surficial geology of the sea floor in Central Rhode Island Sound Southeast of Point Judith, Rhode Island; 2011, U.S. Geological Survey Open-File Report: 2011-1005 |
The U.S. Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA) are working together to study sea-floor environments off the northeast coast of the United States. During 2008, NOAA survey H11996 collected multibeam echosounder data in a 65-square kilometer area in central Rhode Island Sound, southeast of Point Judith, Rhode Island. During 2010, the USGS collected bottom photographs and sediment samples from 25 stations in this study area. The bathymetry, photography, and sediment data are used to interpret sea-floor features including scour depressions, sand waves, trawl marks, and dredge spoils. Scour depressions cover the bathymetric highs in much of the study area. Sand waves are located mostly in the southwest, and trawl marks tend to be in the northern regions. Dredge spoils are located at a disposal site in a bathymetric low in the western end of the study area. Most stations have a sea-floor surface of sand or silty sand, but eight of the stations have boulders to pea-sized gravel or gravelly sediment on the surface. Photographs show sandy areas typically have scattered burrows, shells, amphipod communities, and worm tubes. Boulders and cobbles are commonly overgrown with hydrozoans and anemones. |
| Sea-Floor geology and character of Eastern Rhode Island Sound West of Gay Head, Massachusetts; 2011, U.S. Geological Survey Open-File Report: 2011-1004 |
Gridded multibeam bathymetry covers approximately 102 square kilometers of sea floor in eastern Rhode Island Sound west of Gay Head, Massachusetts. Although originally collected for charting purposes during National Oceanic and Atmospheric Administration hydrographic survey H11922, these acoustic data and the sea-floor stations subsequently occupied to verify them (1) show the composition and terrain of the seabed, (2) provide information on sediment transport and benthic habitat, and (3) are part of an expanding series of studies that provide a fundamental framework for research and management activities (for example, windfarms and fisheries) along the Massachusetts inner continental shelf. Most of the sea floor in the study area has an undulating to faintly rippled appearance and is composed of bioturbated muddy sand, reflecting processes associated with sediment sorting and reworking. Shallower areas are composed of rippled sand and, where small fields of megaripples are present, indicate sedimentary environments characterized by processes associated with coarse bedload transport. Boulders and gravel were found on the floors of scour depressions and on top of an isolated bathymetric high where erosion has removed the Holocene marine sediments and exposed the underlying relict lag deposits of Pleistocene drift. The numerous scour depressions, which formed during storm-driven events, result in the juxtaposition of sea-floor areas with contrasting sedimentary environments and distinct gravel, sand, and muddy sand textures. This textural heterogeneity in turn creates a complex patchwork of habitats. Our observations of local variations in community structure suggest that this small-scale textural heterogeneity adds dramatically to the sound-wide benthic biological diversity. |
Sea-floor geology and topography offshore in Eastern Long Island Sound, 2011, U.S. Geological Survey Open-File Report 2010–1150, DVD-ROM. |
The U.S. Geological Survey (USGS), in cooperation with National Oceanic and Atmospheric Administration (NOAA) and the Connecticut Department of Environmental Protection (CT DEP), is producing detailed maps of the sea floor in Long Island Sound. The purpose of this report is to release the imagery, digital terrain models (DTMs), an interpretive data layer, and data derived from multibeam echosounder data collected offshore in eastern Long Island Sound during NOAA survey H11997, and photographic and textural data from 28 stations occupied to verify these acoustic data during USGS cruise 2010-015-FA. This study area forms a 133.7 square kilometer (km²), east-northeasterly-trending, roughly parallelogram-shaped area that extends along the thalweg axis of eastern Long Island Sound. |
| Surficial Geology of the Sea Floor in Long Island Sound Offshore of Orient Point, New York ; 2011, U.S. Geological Survey Open-File Report 2010-1100, 1 DVD-ROM |
The U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration (NOAA), and the Connecticut Department of Environmental Protection (CT DEP) are working cooperatively to map and interpret features of the sea floor along the northeastern coast of the United States. This report presents multibeam bathymetry and sidescan-sonar data obtained during NOAA survey H11446, which was conducted in a 12-km² area in Long Island Sound offshore of Orient Point, NY. In addition, sediment and photographic data from 26 stations obtained during a USGS verification cruise are presented. |
| Surficial Geology of the Sea Floor in Central Rhode Island Sound Southeast of Point Judith, Rhode Island, 2011, U.S. Geological Survey Open-File Report 2010-1005 |
The U.S. Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA) are working together to study sea-floor environments off the northeast coast of the United States. During 2008, NOAA survey H11996 collected multibeam echosounder data in a 65-square kilometer area in central Rhode Island Sound, southeast of Point Judith, Rhode Island. During 2010, the USGS collected bottom photographs and sediment samples from 25 stations in this study area. |
U.S. Geological Survey East-Coast Sediment Analysis: Procedures, Database, and GIS Data: 2011, U.S.. Geological Survey Open-File Report 2005-1001 (version 2.2), 1 DVD-ROM.
This publication supersedes U.S. Geological Survey Open-File Report 00-358 and Open-File Report 2005-1001 (version1.0). |
This DVD-ROM publication releases a collection of over 26,000 sediment samples produced by the U.S. Geological Survey, Coastal and Marine Geology Program projects based in Woods Hole, MA through 2011. The publication also describes the field methods used to collect marine sediment samples and the laboratory methods used to determine and characterize the grain-size distributions. |
| Sea-Floor Geology and Character Offshore of Rocky Point, New York; 2010, U.S. Geological Survey Open-File Report 2010-1007, 1 DVD-ROM |
The U.S. Geological Survey (USGS), in cooperation with National Oceanic and Atmospheric Administration (NOAA) and the Connecticut Department of Environmental Protection (CT DEP), is producing detailed maps of the sea floor in Long Island Sound. The purpose of this report is to release the imagery, digital terrain models (DTMs), interpretive data layers, and data derived from sidescan-sonar and multibeam echo-sounder data collected offshore of Rocky Point, New York, in eastern Long Island Sound, and from the 19 stations occupied to verify these acoustic data. |
Geophysical and sampling data from the inner continental shelf: northern Cape Cod Bay, Massachusetts, 2010, U.S. Geological Survey Open-File Report 2010-1006 |
The U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM) have cooperated to map approximately 480 km2 of the inner continental shelf in northern Cape Cod Bay, MA. This report contains geophysical and sampling data collected by the USGS during five research cruises between 2006 and 2008. The geophysical data include (1) swath bathymetry from interferometric sonar, (2) acoustic backscatter from interferometric and sidescan sonars, and (3) subsurface stratigraphy and structure from seismic-reflection profilers. The seafloor sampling data include sediment samples, photographs, and video tracklines. |
| Integrated multibeam and LIDAR bathymetry data offshore of New London and Niantic, Connecticut, 2010, U.S. Geological Survey Open-File Report 2009–1231 |
The U.S. Geological Survey (USGS), in cooperation with National Oceanic and Atmospheric Administration (NOAA) and the Connecticut Department of Environmental Protection (CT DEP), is producing detailed maps of the sea floor in Long Island Sound. The purpose of this report is to release the integrated bathymetric data from hydrographic surveys conducted off Niantic and New London, Connecticut, in northeastern Long Island Sound. Bathymetric Light Detection and Ranging (LIDAR) was used to acquire data in the shallower, nearshore areas (surveys H11224 and H11225); multibeam echosounders were used in the deeper areas farther offshore (surveys H11441 and H11442). These datasets have been combined into complete-coverage Environmental Systems Research Institute (ESRI) raster grids and GeoTIFF imagery of the sea floor in order to provide a continuous offshore-to-nearshore representation. |
Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts, 2010, U.S. Geological Survey Open-File Report 2009-1072 |
The U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM) have cooperated to map approximately 200 km² of the Massachusetts inner continental shelf between Duxbury and Hull. This report contains geophysical and geological data collected by the USGS on three cruises between 2006 and 2007. These USGS data are supplemented with a National Oceanic and Atmospheric Administration (NOAA) hydrographic survey conducted in 2003 to update navigation charts. The geophysical data include (1) swath bathymetry from interferometric sonar and multibeam echosounders, (2) acoustic backscatter from sidescan sonar and multibeam echosounders, and (3) subsurface stratigraphy and structure from seismic-reflection profilers. The geological data include sediment samples, seafloor photographs, and bottom videos. |
| Digital Seismic-Reflection Data from Eastern Rhode Island Sound and Vicinity, 1975-1980; 2009, U.S. Geological Survey Open-File Report 2009–1003, 1 CD-ROM |
During 1975 and 1980, the U.S. Geological Survey (USGS) conducted two seismic-reflection surveys in Rhode Island Sound (RIS) aboard the research vessel Asterias: cruise ASTR75–June surveyed eastern RIS in 1975 and cruise AST–80–6B surveyed southern RIS in 1980. Data from these surveys were recorded in analog form and archived at the USGS Woods Hole Coastal and Marine Science Center's Data Library. In response to recent interest in the geology of RIS and in an effort to make the data more readily accessible while preserving the original paper records, the seismic data from these cruises were scanned and converted to black and white Tagged Image File Format and grayscale Portable Network Graphics images and SEG-Y data files. Navigation data were converted from U.S. Coast Guard Long Range Aids to Navigation time delays to latitudes and longitudes that are available in Environmental Systems Research Institute, Inc., shapefile format and as eastings and northings in space-delimited text format. This report complements two others that contain analog seismic-reflection data from RIS (McMullen and others, 2009) and Long Island and Block Island Sounds (Poppe and others, 2002) and were converted into digital form. |
| Digital Seismic-Reflection Data from Western Rhode Island Sound, 1980; 2009, U.S. Geological Survey Open-File Report 2009–1002, 1 CD-ROM |
During 1980, the U.S. Geological Survey (USGS) conducted a seismic-reflection survey in western Rhode Island Sound aboard the Research Vessel Neecho. Data from this survey were recorded in analog form and archived at the USGS Woods Hole Science Center's Data Library. Due to recent interest in the geology of Rhode Island Sound and in an effort to make the data more readily accessible while preserving the original paper records, the seismic data from this cruise were scanned and converted to Tagged Image File Format (TIFF) images and SEG-Y data files. Navigation data were converted from U.S. Coast Guard Long Range Aids to Navigation (LORAN-C) time delays to latitudes and longitudes, which are available in Environmental Systems Research Institute, Inc. (ESRI) shapefile format and as eastings and northings in space-delimited text format. |
| Geological Interpretation of the Sea Floor Offshore of Edgartown, Massachusetts, 2010, U.S. Geological Survey Open-File Report: 2009-1001 |
Gridded bathymetry and sidescan-sonar imagery together cover approximately 37.3 square kilometers of sea floor in the vicinity of Edgartown Harbor, Massachusetts. Although originally collected for charting purposes during National Oceanic and Atmospheric Administration hydrographic survey H11346, these acoustic data, and the sea-floor stations and seismic-reflection lines subsequently occupied to verify them, 1) show the composition and terrain of the seabed, 2) provide information on sediment transport and benthic habitat, and 3) are part of an expanding series of studies that provide a fundamental framework for research and management (for example, windfarms, pipelines, and dredging) activities along the Massachusetts inner continental shelf. |
| Sidescan-Sonar Imagery and Surficial Geologic Interpretations of the Sea Floor in Western Rhode Island Sound, 2009, U.S. Geological Survey Open-File Report 2008-1181 |
The U.S. Geological Survey (USGS) has been working with the National Oceanic and Atmospheric Administration (NOAA) to interpret areas of the sea floor along the northeastern coast of the United States. In July 2004, NOAA completed hydrographic survey H11322 in Rhode Island Sound, about 8 km southeast of Point Judith, Rhode Island, and 12 km east of Block Island (fig. 1). Sidescan-sonar and bathymetric data obtained during the survey were used to delineate sea-floor features and sedimentary environments. |
| High-Resolution Geologic Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts, 2009, U.S. Geological Survey Open-File Report 2007-1373 |
The U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM) have cooperated to map approximately 325 km2 of the inner continental shelf between Cape Ann and Salisbury Beach, MA. This report contains geophysical and sampling data collected by the USGS during two research cruises between 2004 and 2005. The geophysical data includes swath bathymetry, sidescan sonar and seismic-reflection profiling. The seafloor sampling data include sediment samples, photographs, and video tracklines. |
Enhanced Sidescan-Sonar Imagery Offshore of Southeastern Massachusetts, 2008, U.S. Geological Survey Open-File Report 2008-1196
This publication supersedes U.S. Geological Survey Open-File Report 2006-1357 and 2007-1138. |
The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Massachusetts Office of Coastal Zone Management (MA CZM), is producing detailed geologic maps of the coastal sea floor. As part of this cooperative project, sidescan-sonar imagery is being interpreted to delineate sediment distribution, sedimentary environments, and other sea-floor features (Poppe and others, 2006a, b; Poppe and others, 2007a, b; Poppe and others, 2008). The mosaics presented herein were derived from NOAA hydrographic surveys conducted in the vicinity of Quicks Hole—a passage through the Elizabeth Islands, which extend in a chain southwest of Cape Cod—and from Great Round Shoal Channel, a passage between Nantucket and Cape Cod |
| Enhanced Sidescan-Sonar Imagery, North-Central Long Island Sound: 2008, U.S. Geological Survey Open-File Report 2008-1174, 1 DVD-ROM.
This publication supersedes U.S. Geological Survey Open-File Report 2004-1003, 2005-1018, and 2005-1162. |
This Open-File DVD-ROM contains digital versions of the sidescan sonar imagery from surveys H11043, H11044, and H11045 completed by the National Oceanic and Atmospheric Administration (NOAA). The surveys covered an area of the sea floor in north-central Long Island Sound. The sidescan sonar imagery was enhanced by matching the grayscale tones between adjacent sidescan-sonar lines to decrease the patchwork effect caused by numerous artifacts and to provide a more coherent sidescan-sonar image for use in geologic interpretation. |
| Interpolation of Reconnaissance Multibeam and Single-Beam Bathymetry Offshore of Milford, Connecticut: 2008, U.S. Geological Survey Open-File Report 2008-1146 |
This Open-File DVD-ROM contains digital versions of the bathymetry from a survey completed by the National Oceanic and Atmospheric Administration (NOAA). The survey area of the sea floor in west-central Long Island Sound off Milford, Connecticut. |
| Sea-Floor Character and Sedimentary Processes in the Vicinity of Woods Hole, Massachusetts; 2008, U.S. Geological Survey Open-File Report 2008-1004 |
The digital terrain models (DTMs), imagery, interpretive data layers, and data presented herein were derived from multibeam echo-sounder and sidescan-sonar data collected in the vicinity of Woods Hole, the main passage between Buzzards Bay and Vineyard Sound, Massachusetts, and from the stations occupied to verify these acoustic data (fig. 1). Basic data layers show sea-floor topography, sun-illuminated shaded relief, and backscatter intensity; interpretive layers show the distributions of surficial sediment, sedimentary environments, and sea-floor features. Presented verification data include sediment grain-size analyses and a gallery of still photographs of the seabed.
This publication is the fourth in a series of digital reports describing the sea-floor geology around Cape Cod. The first focused on the area off the eastern shore of the outer Cape (Poppe and others, 2006); the second on Quicks Hole, another passage through the Elizabeth Islands (Poppe and others, 2007a); and the third on Great Round Shoal Channel at the eastern entrance to Nantucket Sound (Poppe and others, 2007b). |
| Sidescan-Sonar Imagery and Surficial Geologic Interpretations of the Sea Floor in Central Rhode Island Sound; 2008, U.S. Geological Survey Open-File Report 2007-1366 |
The U.S. Geological Survey (USGS) has been working with the National Oceanic and Atmospheric Administration (NOAA) to interpret the surficial geology of areas along the northeastern coast of the United States. During 2004, the NOAA Ship RUDE conducted Hydrographic Survey H11321 in Rhode Island Sound. This sidescan-sonar and bathymetry survey covers an area of 93 km² located 12 km southeast of Brenton Point, RI in water depths of 28-39 m (fig. 1). The purpose of this report is to delineate sea floor features and sedimentary environments of this area in central Rhode Island Sound using sidescan-sonar and bathymetric data from NOAA Survey H11321 and seismic-reflection data from a previous USGS field study (Needell and others, 1983a). |
| The Geology of Six Mile Reef, Eastern Long Island Sound: 2007, U.S. Geological Survey Open-File Report 2007-1191 |
This Open-File DVD-ROM contains multibeam bathymetry and geologic interpretation of the surficial geology from surveys H11252 and H11361 completed by the National Oceanic and Atmospheric Administration (NOAA) during 2004. These surveys, in the vicinity of Six Mile Reef, covered an area of roughly 156 square km of the sea floor in eastern Long Island Sound. |
| Sidescan-Sonar Imagery, Multibeam Bathymetry, and Surficial Geologic Interpretations of the Sea Floor in Rhode Island Sound, off Sakonnet Point, Rhode Island; 2007, U.S. Geological Survey Open-File Report 2007-1150 |
The U.S. Geological Survey (USGS) is working with the National Oceanic and Atmospheric Administration (NOAA) to interpret the surficial geology in estuaries and sounds along the northeastern coast of the United States. This report interprets the area covered in 2004 by NOAA Survey H11320, about 72 km² of sea floor in eastern Rhode Island Sound (RIS), located about 8 km south of Sakonnet Point, Rhode Island. This DVD-ROM contains digital versions of the sidescan and bathymetric imagery and interpretive data layers and maps showing distributions of surficial features and sedimentary environments.
The imagery and its interpretations are provided to help define the geological variability of the sea floor, improve our understanding of surficial processes, and provide a detailed framework for future research, monitoring, and management activities. |
| Sea-Floor Character and Sedimentary Processes of Great Round Shoal Channel, Offshore Massachusetts; 2007, U.S. Geological Survey Open-File Report 2007-1138 |
During 2004 the National Oceanic and Atmospheric Administration (NOAA) Ship THOMAS JEFFERSON completed a hydrographic survey (H11079) that covered a roughly 33.9 square km area of Great Round Shoal Channel, located at the eastern entrance to Nantucket Sound. This digital publication contains bathymetric grids and GeoTIFF images generated from the multibeam data, sidescan-sonar imagery, bottom photographs, textural data, and an interpretion of the surficial geology. |
| Geologic Interpretation and Multibeam Bathymetry of the Sea Floor in the Vicinity of the Race, Eastern Long Island Sound: 2007, U.S. Geological Survey Open-File Report 2007-1012 |
This Open-File DVD-ROM contains multibeam bathymetry and geologic interpretation of the surficial geology from survey H11250 completed by the National Oceanic and Atmospheric Administration (NOAA) Ship THOMAS JEFFERSON. The survey area covered 94 km2 of the sea floor in the vicinity of the Race, Eastern Long Island Sound. This publication also includes multibeam bathymetric grids, GeoTIFF imagery generated from the multibeam and interpretation of the surficial geology for the area |
| Sea-Floor Character and Surface Processes in the Vicinity of Quicks Hole, Elizabeth Islands, Massachusetts; 2007, U.S. Geological Survey Open-File Report 2006-1357 |
The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Massachusetts Office of Coastal Zone Management (MA CZM), is producing detailed geologic maps of the coastal sea floor. The imagery, interpretive data layers, and data presented within this Open-File Report were derived from multibeam echo-sounder and sidescan sonar surveys conducted by NOAA survey H11076 in the vicinity of Quicks Hole, a passage through the Elizabeth Islands, which extend in a chain southwest off Cape Cod, Massachusetts, and from the stations occupied by the USGS to verify these acoustic data. Although originally collected for charting purposes, these data provide a fundamental framework for research and management activities along this part of the Massachusetts coastline, show the composition and terrain of the seabed, and provide information on sediment transport and benthic habitat. |
| Surficial Geology in Central Narragansett Bay, Rhode Island: Interpretations of Sidescan Sonar and Multibeam Bathymetry; 2007, U.S. Geological Survey Open-File Report 2006-1199 |
The United States Geological Survey (USGS) is working cooperatively with the National Oceanic and Atmospheric Association (NOAA) to interpret the surficial geology in estuaries along the coast of the northeastern United States. The purpose of our present study is to determine the distributions of surficial sediments and sedimentary environments in two areas of Narragansett Bay, Rhode Island, using sidescan sonar imagery, high-resolution bathymetry, and sediment data. This study provides a framework for future studies on topics such as benthic habitats and oceanographic processes that control the transport and distribution of bottom sediments. This study mapped two separate areas totalling about 33 km² One area lies in West Passage between Plum Point, Quonset Point and Conanicut Island; the other area lies in East Passage around Dyer Island and extends south of Prudence Island. |
| Geologic framework studies of South Carolina's Long Bay from Little River Inlet to Winyah Bay, 1999-2003; geospatial data release; 2007, U.S. Geological Survey Open-File Report 2005-1346 |
In 1999, the U.S. Geological Survey (USGS), in partnership with the South Carolina Sea Grant Consortium (SCSGC), began a study to investigate inner continental shelf and shoreface processes. This report contains the geospatial data used to define the geologic framework offshore of the northern South Carolina coast. |
| A GIS Library of Multibeam Data for Massachusetts Bay and the Stellwagen Bank National Marine Sanctuary, Offshore of Boston, Massachusetts; 2007, U.S. Geological Survey Data Series 99 |
The U.S. Geological Survey (USGS) has mapped the sea floor of the Stellwagen Bank National Marine Sanctuary and western Massachusetts Bay, offshore of Boston, Massachusetts. The mapping was conducted in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and with support from the Canadian Hydrographic Service and the University of New Brunswick. This GIS Library contains images and grids of bathymetry, shaded relief bathymetry, and backscatter intensity data from these surveys. |
| Geologic Interpretation and Multibeam Bathymetry of the Sea Floor in Southeastern Long Island Sound: 2006, U.S. Geological Survey Open-File Report 2006-1059 |
This report contains multibeam bathymetry acquired by the National Oceanic and Atmospheric Administration (NOAA) during survey H11255. The survey covered an area of 95 km2 in the south central vicinity of Long Island Sound, north of Roanoke Point. This publication also contains a data layer identifying interpreted sea floor features. |
| High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts; 2006, U.S. Geological Survey Open-File Report 2006-1008, 1 DVD-ROM. |
This report presents the surficial geologic framework data and information for the sea floor of Boston Harbor and Approaches, Massachusetts. Included in this report is the geospatial data used to create the high-resolution maps of the sea floor and a gallery of photographs of the sea floor. |
| High-Resolution Geologic Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts; 2006, U.S. Geological Survey Open-File Report 2005-1293 |
This report presents high-resolution geologic maps and geospatial data of the seafloor offshore of Massachusetts, from Nahant to Gloucester. Approximately 134 km² of the inner shelf were mapped with a focus on the nearshore region in water depths less than 40 m. Data layers include distribution of bottom types, sediment thickness and location and links to acquired bottom photographs. |
Interpolation of Reconnaissance Multibeam Bathymetry from North-Central Long Island Sound: 2006, U.S. Geological Survey Open-File Report 2005-1145 |
This Open-File DVD-ROM contains digital versions of three reconnaissance acoustic bathymetric surveys completed by the National Oceanic and Atmospheric Administration (NOAA) in the north-central Long Island Sound Region. These data, primarily single-beam and shallow-water multibeam echosoundings, have been interpolated and regridded into complete-coverage data sets and images of the sea floor. |
| Geological Interpretation of Bathymetric and Backscatter Imagery of the Sea Floor Off Eastern Cape Cod, Massachusetts; 2006, U.S. Geological Survey Open-File Report 2005-1048, 1 DVD-ROM. |
This DVD-ROM publication contains backscatter and bathymetric data and imagery, and interpretive data layers derived from multibeam echo-sounder data collected off Eastern Cape Cod, Massachusetts in November 1998. Additional data layers include surficial sediment data and bottom photos acquired in 2004 to ground-truth the multibeam data. |
| Sidescan Sonar Imagery and Surficial Geologic Interpretation of the Sea Floor off Bridgeport, Connecticut: 2005, U.S. Geological Survey Open-File Report 2005-1162
This publication is superseded by U.S. Geological Survey Open-File Report 2008-1174. |
This Open-File DVD-ROM contains digital versions of the sidescan sonar imagery from a survey completed by the National Oceanic and Atmospheric Administration (NOAA). The survey area covered a 190.3 km2 area of the sea floor in west-central Long Island Sound off Bridgeport, Connecticut. Maps and digital data showing distributions of surficial features, sediments and sedimentary environments are also available. |
Surficial Geologic Interpretation and Sidescan Sonar Imagery of the Sea Floor in West-Central Long Island Sound: 2005, U.S. Geological Survey Open-File Report 2005-1018
This publication is superseded by U.S. Geological Survey Open-File Report 2008-1174. |
This Open-File DVD-ROM contains digital versions of the sidescan sonar imagery from a survey completed by the National Oceanic and Atmospheric Administration (NOAA). The survey area covered a 293 km2 area of the sea floor in west-central Long Island Sound off Milford, Connecticut. Maps and digital data showing distributions of surficial features, sediments and sedimentary environments are also available. |
Sidescan Sonar Imagery and Surficial Geologic Interpretation of the Sea Floor off Branford, Connecticut: 2004, U.S. Geological Survey Open-File Report 2004-1003
This publication is superseded by U.S. Geological Survey Open-File Report 2008-1174. |
This Open-File DVD-ROM contains digital versions of the sidescan sonar imagery from a survey completed by the National Oceanic and Atmospheric Administration (NOAA). The survey area covered a 41.1 km2 area of the sea floor in north-central Long Island Sound off Branford, Connecticut. Maps and digital data showing distributions of surficial features, sediments and sedimentary environments are also available. |
A Pictorial Survey of the Bedrock Beneath Western Cape Cod, Massachusetts; 2003, U.S. Geological Survey Open-File Report 03-221 |
This Open-File CD-ROM contains descriptions and ancillary information for 62 bedrock cores, 55 have associated photographs. The cores, which were collected between March 1998 and October 2002, are from wells drilled on the Massachusetts Military Reservation (MMR), Cape Cod, Massachusetts as part of the Air Force Center for Environmental Excellence's Installation Restoration Program. |
Surficial sediment data from the Gulf of Maine, Georges Bank, and vicinity; a GIS compilation, 2003, U.S. Geological Survey Open-File Report 03-001 |
This report contains a compilation of available textural data and lithologic descriptions generated on surficial sediment samples from off the northeastern coast of the United States. Over 49,000 samples containing sediment grain size and lithology have been compiled as part of the U.S. Geological Survey's National Benthic Habitats and Marine Aggregate Resources and Processes Projects. These data will be used to update the existent maps on surficial sediment distribution available for the Gulf of Maine and Georges Bank regions. |
High-Resolution Quaternary Seismic Stratigraphy of the New York Bight Continental Shelf; 2002, U.S. Geological Survey Open-File Report 02-152, 1 DVD-ROM. |
This DVD-ROM contains interpreted map products and GIS data generated from sidescan-sonar, sub-bottom reflection, and bathymetric data collected with thein the New York Bight inner-continental shelf. |
Geological Framework Data from Long Island Sound, 1981-1990: A Digital Data Release: 2002, U.S. Geological Survey Open-File Report 02-002 |
This Open-File DVD-ROM contains images of high-resolution seismic-reflection profiles, core logs and photographs, and navigation data collected in Long Island Sound from 1981 to 1990 through a cooperative between the USGS and the Connecticut Department of Environmental Protection (CT-DEP). Seismic navigation and core location information are available in GIS compatible formats. |
| Sea-floor Photography from the Continental Margin Program: A Pictorial Survey of Benthic Character and Habitats Along the U. S. East Coast: 2001, U.S. Geological Survey Open-File Report 01-154 |
This report contains 466 historical bottom photographs collected as
part of the U.S. Geological Survey's Continental Margin Program. As part of this
program approximately 3800 stations were organized on an 18-km grid that extended from the Canadian border to the southern tip of Florida. Bottom photography was
conducted at many of these stations in conjunction with sediment sampling for grain size, mineralogy, geochemistry, and biology. The purpose of this report is
to release digital versions of these bottom photographs in a gallery that can be visualized geographically. |
Oculina Bank: Sidescan Sonar and Sediment Data from a Deep-Water Coral Reef Habitat off East-Central Florida, 2001, U.S. Geological Survey Open-File Report 99-10 |
The data presented in this open-file report were collected as part of a cooperative project between the U.S. Geological Survey (USGS) Coastal and Marine Geology Program and the National Marine Fisheries Service (NMFS) of the National Oceanographic and Atmospheric Administration (NOAA). This report includes digital mosaics of the sidescan sonar data, tabulated sediment data, and interpretative maps of the seafloor geology. |
Georeferenced Sea-Floor Mapping and Bottom Photography in Long Island Sound: U.S. Geological Survey Open-File Report 00-304 |
A CD-ROM companion of digital data that were published in a Journal of Coastal Research Thematic Section. |
Sidescan sonar images, surficial geologic interpretations, and bathymetry of the Long Island Sound sea floor in New Haven Harbor, and New Haven dumping ground, Connecticut, 2000, U.S. Geological Survey Miscellaneous Geologic Investigations Map I-2736
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These data and interpretations presented herein were collected, compiled, and produced in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey. This report contains sidescan sonar images, surficial geologic interpretations, and bathymetry of the Long Island Sound sea floor in New Haven Harbor, and New Haven dumping ground, Connecticut. |
Sidescan sonar mosaics
This publication supersedes U.S. Geological Survey Open-File Report 98-502. |
A summary list of eight USGS sidescan sonar mosaics. These mosaics were created from data collected from 1993 - 1997 and were included on U.S. Geological Survey Open-File Report 98-502. |
| Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor around Falkner Island, Connecticut, 1999, U.S. Geological Survey Miscellaneous Geologic Investigations Map I-2671 |
These data and interpretations presented herein were collected, compiled, and produced in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey. This report contains sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor around Falkner Island, Connecticut. |
Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor off Roanoke Point, New York, 1999, U.S. Geological Survey Miscellaneous Geologic Investigations Map I-2692
PDF Report
PDF Image |
These data and interpretations presented herein were collected, compiled, and produced in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey and the New York State Division of Coastal Resources. This report contains sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor off Roanoke Point, New York. |
Long Island Sound Environmental Studies, 1998, U.S. Geological Survey Open-File Report 98-502
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This report contains an archive of sidescan sonar, high-resolution seismic-reflection, bathymetric, sediment (texture and geochemistry), biologic, surficial geologic and bibliographic data from Long Island Sound. These data and interpretations presented herein were collected, compiled, and produced in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey; the University of New Haven; the U.S. Environmental Protection Agency; the U.S. Army Corps of Engineers; the U.S. Coast Guard; and the New York State Division of Coastal Resources. |
Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor in Niantic Bay and vicinity, Connecticut, 1998, U.S. Geological Survey Miscellaneous Geologic Investigations Map I-2625
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These data and interpretations presented herein were collected, compiled, and produced in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey. This report contains sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor in Niantic Bay and vicinity, Connecticut. |
Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor off Milford, Connecticut, 1998, U.S. Geological Survey Miscellaneous Geologic Investigations Map I-2632
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These data and interpretations presented herein were collected, compiled, and produced in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey and the University of New Haven. This report contains sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor off Milford, Connecticut. |
Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Fishers Island Sound sea floor off Connecticut, New York, and Rhode Island, 1998, U.S. Geological Survey Miscellaneous Geologic Investigations Map I-2640
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These data and interpretations presented herein were collected, compiled, and produced in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey. This report contains sidescan sonar image, surficial geologic interpretation, and bathymetry of the Fishers Island Sound sea floor off Connecticut, New York, and Rhode Island. |
Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor off Norwalk, Connecticut, 1997, U.S. Geological Survey Miscellaneous Geologic Investigations Map I-2589
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These data and interpretations presented herein were collected, compiled, and produced in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey and the University of New Haven. This report contains sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor off Norwalk, Connecticut |
U.S. Department of the Interior |
U.S. Geological Survey
U.S. East Coast Map Servers