High-resolution geophysical data collected along the Mississippi River Delta front offshore of southeastern Louisiana, U.S. Geological Survey Field Activity 2017-003-FA

High resolution bathymetric, sea-floor backscatter, and seismic-reflection data were collected offshore of southeastern Louisiana aboard the research vessel Point Sur on May 19-26, 2017, in an effort to characterize mudflow hazards on the Mississippi River Delta front. As the initial field program of a research cooperative between the U.S. Geological Survey, the Bureau of Ocean Energy Management, and other Federal and academic partners, the primary objective of this cruise was to assess the suitability of sea-floor mapping and shallow subsurface imaging tools in the challenging environmental conditions found across delta fronts (for example, variably distributed water column stratification and widespread biogenic...

Tags: BOEM, Bureau of Ocean Energy Management, CMGP, Coastal and Marine Geology Program, Gulf of Mexico, All tags... Marine Geology, Mississippi River Delta front, Pass a Loutre, Remote Sensing, South Pass, Southeast Louisiana, Southwest Pass, U.S. Geological Survey, USGS, WHCMSC, Woods Hole Coastal and Marine Science Center, bathymetry, boomer, chirp, field activity number 2017-003-FA, marine geology, marine geophysics, multi-channel streamer, multibeam sonar, navigational data, ocean sciences, sea floor, sea-floor acoustic reflectivity, seismic reflection methods, sound velocity profiles, sparker, Fewer tags

Location of bottom photographs along with images collected in July 2016 by the U.S. Geological Survey off Town Neck Beach, Sandwich, Massachusetts, during field activity 2016-037-FA (JPEG images, point shapefile, and CSV file)

Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...

Categories: Data; Tags: Atlantic Ocean, CMGP, Cape Cod, Cape Cod Bay, Coastal and Marine Geology Program, All tags... GoPro HERO4 Black, Gulf of Maine, JPEG, JPG, Massachusetts, North America, R/V Rafael, SEABOSS, SEABed Observation and Sampling System, Sandwich, Town Neck Beach, U.S. Geological Survey, USGS, United States, Van Veen grab sampler, WHCMSC, Woods Hole Coastal and Marine Science Center, bay, bottom imagery, bottom photographs, continental shelf, field activity 2016-037-FA, geoscientificInformation, ground-truth, image collections, imagery, location, marine geology, marine geology, marine geology, navigational data, oceans, photographic sampling, photography, photography, photos, sea floor, sea-floor characteristics, seabed imagery, seabed photographs, seafloor, sediments, shapefile, stations, underwater photography, Fewer tags

Location and grain-size analysis results of sediment samples collected in Long Island Sound, Connecticut and New York, in fall 2017 and spring 2018 by the U.S. Geological Survey, University of Connecticut, and University of New Haven during field activities 2017-056-FA and 2018-018-FA (simplified point shapefile and CSV files)

Two marine geological surveys were conducted in Long Island Sound, Connecticut and New York, in fall 2017 and spring 2018 by the U.S. Geological Survey, University of Connecticut, and University of New Haven through the Long Island Sound Mapping and Research Collaborative. Sea-floor images and videos were collected at 210 sampling sites within the survey area, and surficial sediment samples were collected at 179 of the sites. The sediment data and the observations from the images and videos are used to identify sediment texture and sea-floor habitats.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, Beckman Coulter Multisizer 3, CMHRP, CSV, Coastal and Marine Hazards and Resources Program, All tags... Connecticut, Fishers Island, Fishers Island Sound, HORIBA LA-960 laser diffraction analyzer, LISMaRC, Long Island Sound, Long Island Sound Habitat Mapping, Long Island Sound Mapping and Research Collaborative, NURTEC, New York, North America, Northeast Underwater Research, Technology and Education Center, R/V Connecticut, SEABOSS, SEABed Observation and Sampling System, U.S. Geological Survey, UConn, USGS, United States, University of Connecticut, University of New Haven, Van Veen grab sampler, WHCMSC, Woods Hole Coastal and Marine Science Center, clay, continental shelf, field activity 2017-056-FA, field activity 2018-018-FA, geoscientificInformation, grab sampling, grain-size analysis, gravel, ground-truth, location, marine geology, oceans, sand, sea floor, sea-floor characteristics, seafloor, seafloor samples, sediment analysis, sediment data, sediment samples, sediments, shapefile, silt, sound, stations, surficial sediment classification, Fewer tags

Sea-floor videos and location of bottom video tracklines collected in Nantucket Sound, Massachusetts, in May 2016 and May 2017 by the U.S. Geological Survey during field activities 2016-005-FA and 2017-022-FA (MP4 video files and polyline shapefile)

Two marine geological surveys were conducted in Nantucket Sound, Massachusetts, in May 2016 and May 2017 by the U.S. Geological Survey as part of an agreement with the Massachusetts Office of Coastal Zone Management to map the geology of the sea floor offshore of Massachusetts. Samples of surficial sediment and photographs of the sea floor were collected at 76 sampling sites within the survey area, and sea-floor videos were collected at 75 of the sites. The sediment data and the observations from the photos and videos are used to explore the nature of the sea floor; in conjunction with high-resolution geophysical data, the observations are used to make interpretive maps of sedimentary environments and validate acoustic...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, CMHRP, CZM, Coastal and Marine Hazards and Resources Program, MA CZM, All tags... MP4, MassCZM, Massachusetts, Massachusetts Office of Coastal Zone Management, MiniSEABOSS, Nantucket, Nantucket Sound, North America, R/V Rafael, R/V Tioga, SEABOSS, SEABed Observation and Sampling System, SeaViewer 6000 HD Sea-Drop, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, bottom video, continental shelf, field activity 2016-005-FA, field activity 2017-022-FA, geoscientificInformation, ground-truth, location, marine geology, navigational data, oceans, sea floor, sea-floor characteristics, seabed video, seafloor, sediment analysis, sediments, shapefile, sound, stations, video monitoring, video observation, videography, videos, Fewer tags

Backscatter imagery collected in 2016 by the U.S. Geological Survey off Town Neck Beach Sandwich, Massachusetts during field activity 2016-017-FA (GeoTIFF image)

Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...

Tags: Atlantic Ocean, CMGP, Cape Cod Bay, Coastal and Marine Geology Program, GeoTIFF, All tags... Gulf of Maine, Marine Geology, Massachusetts, North America, R/V Rafael, SEA SWATHplus, SEA Submetrix, Sandwich, Town Neck Beach, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, backscatter, beach, coast, field activity 2016-017-FA, geomorphology, geoscientificInformation, imageryBaseMapsEarthCover, interferometric sonar, interferometry, marine geology, marine geology, marine geophysics, marine geophysics, oceans, raster, sea floor, sea-floor acoustic reflectivity, sea-floor characteristics, seafloor, sedimentary environments, shore, swath backscatter, Fewer tags

Depth to Quaternary regional unconformities offshore of the Delmarva Peninsula, including Maryland and Virginia state waters

Geologic structure and isopach maps were constructed by interpreting over 19,890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic reflection profiles from the continental shelf of the Delmarva Peninsula, including Maryland and Virginia state waters. In this region, Brothers and others (2020) interpret 12 seismic units and 11 regional unconformities. They interpret the infilled channels as Late Tertiary and Quaternary courses of the Susquehanna, Potomac, Rappahannock, York and James Rivers and tributaries, in addition to a broad drainage system. These regional unconformities form a composite unconformity interpreted as the Quaternary-Tertiary (Q-T) unconformity. A depth to Tertiary...

Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 32-bit GeoTIFF, Applied Acoustics S-Boom Source, Assateague Island, Assateague Island National Seashore, Atlantic Ocean, All tags... BOEM, Bureau of Ocean Energy Management, CMHRP, Chesapeake Bay, Chincoteague Bay, Chincoteague Bight, Chincoteague Inlet, Chincoteague Island, Chincoteague National Wildlife Refuge, Coastal and Marine Hazards and Resources Program, Cobb Island, Delaware, Delmarva Peninsula, Fisherman Island, Geologic Framework, Geometrics 16-channel Geoeel Streamer, Hog Island, Holocene, Holocene, Interpretation, James River, Marine Geology, Maryland, Maryland Energy Administration, Maryland Wind Energy Area, Myrtle Island, Parramore Island, Persimmons Point, Pleistocene, Potomac River, Quaternary, Rappahannock River, Sea floor, Seismic Interpretation, Seismic-reflection Profiles, Ship Shoal Island, Smith Island, Susquehanna River, Tertiary, U.S. Geological Survey, USGS, Unconformity, Virginia, WHCMSC, Wallops Island, Woods Hole Coastal and Marine Science Center, Wreck Island, geologic contacts, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, marine geology, oceans, scientific interpretation, Fewer tags

Sediment Texture and Geomorphology of the Sea Floor from Fenwick Island, Maryland to Fisherman's Island, Virginia

These data are a qualitatively derived interpretive polygon shapefile defining surficial sediment type and distribution, and geomorphology, for nearly 1,400 square kilometers of sea floor on the inner-continental shelf from Fenwick Island, Maryland to Fisherman’s Island, Virginia, USA. These data are classified according to Barnhardt and others (1998) bottom-type classification system, which was modified to highlight changes in secondary sediment-types such as mud and gravel across this primarily sandy shelf. Most of the geophysical and sample data used to create this interpretive layer were collected as part of the Linking Coastal Processes and Vulnerability: Assateague Island Regional Study project (GS2-2C), supported...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Assateague Island, Assateague Island National Seashore, Assawoman Island, Atlantic Ocean, Backscatter, All tags... Bathymetry, Bottom Photographs, Bottom Type, Cape Henlopen, Cedar Island, Chincoteague Inlet, Chincoteague Island, Chincoteague National Wildlife Refuge, Cobb Island, Delaware, Delmarva Peninsula, Delmarva Peninsula, Fenwick Island, Fisherman's Island, Hog Island, Interpretation, Marine Geology, Maryland, Metompkin Island, Mid-Atlantic Bight, Mink Island, Mockhorn Island, Myrtle Island, Ocean City, Parramore Island, Rehoboth, Sea floor, Sediment Cover, Sediment Distribution, Sediment Samples, Sediment Texture, Ship Shoal Island, Sidescan Sonar, Slope, Smith Island, Virginia, Wallops Island, Wreck Island, carbonate, geomorphology, interpretation, marine geology, marine geophysics, sea-floor characteristics, sediment texture, Fewer tags

Photographs and locations of bottom still imagery collected in Little Egg Inlet and offshore the southern end of Long Beach Island, NJ, during USGS Field Activity 2018-049-FA (JPEG images, point shapefile, and CSV file)

The natural resiliency of the New Jersey barrier island system, and the efficacy of management efforts to reduce vulnerability, depends on the ability of the system to recover and maintain equilibrium in response to storms and persistent coastal change. This resiliency is largely dependent on the availability of sand in the beach system. In an effort to better understand the system's sand budget and processes in which this system evolves, high-resolution geophysical mapping of the sea floor in Little Egg Inlet and along the southern end of Long Beach Island near Beach Haven, New Jersey was conducted from May 31 to June 10, 2018, followed by a sea floor sampling survey conducted from October 22 to 23, 2018, as part...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Beach Haven, CMHRP, Coastal and Marine Hazards and Resources Program, DOI, Department of the Interior, All tags... Forsythe Wildlife Refuge, GoPro HERO4 Black, Holgate, JPEG, JPG, Little Egg Inlet, Long Beach Island, New Jersey, R/V Petrel, SEABOSS, SEABed Observation and Sampling System, Stockton University, U.S. Geological Survey, USGS, United States of America, WHCMSC, Woods Hole Coastal and Marine Science Center, bottom imagery, bottom photographs, field activity number 2018-001-FA, field activity number 2018-049-FA, geoscientificInformation, ground-truth, image collections, imagery, location, marine geology, marine geology, mini-SEABOSS, navigational data, oceans, photography, photos, sea floor, sea-floor characteristics, seabed imagery, seabed photographs, seafloor, sediments, shapefile, stations, underwater photography, Fewer tags

Grain-size analysis of sediment samples collected in July 2016 by the U.S. Geological Survey off Town Neck Beach, Sandwich in Massachusetts, during field activity 2016-037-FA (CSV file and simplified shapefile)

Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...

Categories: Data; Tags: Atlantic Ocean, CMGP, CSV, Cape Cod, Cape Cod Bay, All tags... Coastal and Marine Geology Program, Gulf of Maine, Massachusetts, North America, R/V Rafael, SEABOSS, SEABed Observation and Sampling System, Sandwich, Town Neck Beach, U.S. Geological Survey, USGS, United States, Van Veen grab sampler, WHCMSC, Woods Hole Coastal and Marine Science Center, bay, clay, continental shelf, field activity 2016-037-FA, geoscientificInformation, grab sampling, grain-size analysis, gravel, ground-truth, location, marine geology, marine geology, marine geology, oceans, sand, sea floor, sea-floor characteristics, seafloor, seafloor samples, sediment analysis, sediment data, sediment samples, sediments, silt, stations, surficial sediment classification, Fewer tags

Trackline navigation for EdgeTech SB-512i chirp and multichannel sparker seismic-reflection data collected in 2013 by Coastal Planning & Engineering, Inc. for the Maryland Energy Administration offshore of the Delmarva Peninsula (polyline shapefiles)

Geologic structure and isopach maps were constructed by interpreting over 19,890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic reflection profiles from the continental shelf of the Delmarva Peninsula, including Maryland and Virginia state waters. In this region, Brothers and others (2020) interpret 12 seismic units and 11 regional unconformities. They interpret the infilled channels as Late Tertiary and Quaternary courses of the Susquehanna, Potomac, Rappahannock, York and James Rivers and tributaries, in addition to a broad drainage system. These regional unconformities form a composite unconformity interpreted as the Quaternary-Tertiary (Q-T) unconformity. A depth to Tertiary...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Margin, Atlantic Ocean, BOEM, Bureau of Ocen and Energy Management, CMHRP, All tags... Coastal and Marine Hazards and Resources Program, Delmarva Peninsula, Interpretation, Marine Geology, Maryland, Maryland Energy Administration, Maryland Wind Energy Area, Navigation, Sea floor, Seismic Interpretation, Seismic-reflection Profiles, Shapefile, U.S. Geological Survey, USGS, United States of America, WHCMSC, Woods Hole Coastal and Marine Science Center, geoscientificInformation, geospatial datasets, location, marine geology, marine geophysics, navigational data, oceans, seismic reflection methods, sub-bottom profiling, Fewer tags

Grain-size analysis results and locations of sediment samples ollected in Little Egg Inlet and offshore the southern end of Long Beach Island, NJ, during USGS Field Activity 2018-049-FA (simplified point shapefile and CSV files)

The natural resiliency of the New Jersey barrier island system, and the efficacy of management efforts to reduce vulnerability, depends on the ability of the system to recover and maintain equilibrium in response to storms and persistent coastal change. This resiliency is largely dependent on the availability of sand in the beach system. In an effort to better understand the system's sand budget and processes in which this system evolves, high-resolution geophysical mapping of the sea floor in Little Egg Inlet and along the southern end of Long Beach Island near Beach Haven, New Jersey was conducted from May 31 to June 10, 2018, followed by a sea floor sampling survey conducted from October 22 to 23, 2018, as part...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Beach Haven, CMHRP, CSV, Coastal and Marine Hazards and Resources Program, DOI, All tags... Department of the Interior, Forsythe Wildlife Refuge, HORIBA LA-960 laser diffraction analyzer, Holgate, Little Egg Inlet, Long Beach Island, New Jersey, R/V Petrel, SEABOSS, SEABed Observation and Sampling System, Stockton University, U.S. Geological Survey, USGS, United States of America, Van Veen grab sampler, WHCMSC, Woods Hole Coastal and Marine Science Center, clay, field activity number 2018-001-FA, field activity number 2018-049-FA, geoscientificInformation, grab sampling, grain-size analysis, gravel, ground-truth, location, marine geology, marine geology, mini-SEABOSS, oceans, sand, sea floor, sea-floor characteristics, seafloor, seafloor samples, sediment data, sediment samples, sediments, shapefile, silt, stations, surficial sediment classification, Fewer tags

Interpretation of sea floor geologic units for offshore of western and southern Martha's Vineyard and north of Nantucket, Massachusetts

Geologic, sediment texture, and physiographic zone maps characterize the sea floor south and west of Martha's Vineyard and north of Nantucket, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene marine units provided a foundation on which the surficial maps were created. This mapping is a result of a collaborative effort between the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management to characterize the surface and subsurface geologic framework offshore of...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: 3200, 424, 512i, Aquinnah, Atlantic Ocean, All tags... Boomer, CMGP, CZM, Cape Cod, Chappaquiddick Island, Children's Beach, Chilmark, Coastal and Marine Geology Program, Coatue, Dionis Beach, EdgeTech, Eel Point, Esri Shapefile, Gay Head, Geologic Framework, Great Point, Holocene, Interpretation, Katama Beach, Knudsen, Long Point Wildlife Refuge, Lucy Vincent Beach, Marine Geology, Martha's Vineyard, Massachusetts, Massachusetts Office of Coastal Zone Management, Muskeget Channel, Muskeget Island, Nantucket, Nantucket Harbor, Nantucket Sound, Nomans Land, Pleistocene, Sea floor, Seismic Interpretation, Seismic-reflection Profiles, Shovelful Shoal, South Beach, Squibnocket Beach, Squibnocket Point, Surficial Geology, Tisbury, Tisbury Great Pond Beach, Tuckernuck Bank, Tuckernuck Island, Tuckernuck Shoal, U.S. Geological Survey, U.S. Geological Survey Open-File Report 2008-1288, U.S. Geological Survey Open-File Report 2012-1006, U.S. Geological Survey Open-File Report 2016-1168, USGS, Vineyard Sound, WHCMSC, Wasque Shoal, Wasque point, Woods Hole Coastal and Marine Science Center, geoscientificInformation, geospatial datasets, marine geology, oceans, scientific interpretation, sea-floor characteristics, sedimentation, unconsolidated deposits, Fewer tags

Physiographic Zones of the Sea Floor offshore of western and southern Martha's Vineyard and north of Nantucket, Massachusetts

Geologic, sediment texture, and physiographic zone maps characterize the sea floor south and west of Martha's Vineyard and north of Nantucket, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene marine units provided a foundation on which the surficial maps were created. This mapping is a result of a collaborative effort between the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management to characterize the surface and subsurface geologic framework offshore of...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aquinnah, Atlantic Ocean, Backscatter, Bathymetry, CMGP, All tags... CZM, Cape Cod, Chappaquiddick Island, Children's Beach, Chilmark, Coastal Embayment, Coastal and Marine Geology Program, Coatue, Dionis Beach, Ebb-tidal Delta, Eel Point, Esri Shapefile, Gay Head, Great Point, Hard-bottom Plain, Interpretation, Katama Beach, Long Point Wildlife Refuge, Lucy Vincent Beach, Marine Geology, Martha's Vineyard, Massachusetts, Massachusetts Office of Coastal Zone Management, Muskeget Channel, Muskeget Island, Nantucket, Nantucket Harbor, Nantucket Sound, Nearshore Basin, Nearshore Ramp, Nomans Land, Outer Basin, Physiographic Zones, Rocky Zone, Sea floor, Shell Zone, Shoal\Sand Wave, Shovelful Shoal, Slope, South Beach, Squibnocket Beach, Squibnocket Point, Tisbury, Tisbury Great Pond Beach, Topography, Tuckernuck Bank, Tuckernuck Island, Tuckernuck Shoal, U.S. Geological Survey, U.S. Geological Survey Open-File Report 2008-1288, U.S. Geological Survey Open-File Report 2012-1006, U.S. Geological Survey Open-File Report 2016-1168, USGS, Vineyard Sound, WHCMSC, Wasque Shoal, Wasque point, Woods Hole Coastal and Marine Science Center, geoscientificInformation, geospatial datasets, marine geology, oceans, scientific information, sea-floor characteristics, sedimentology, sieve-size analysis, unconsolidated deposits, Fewer tags

PNG images of each chirp seismic profile collected in 2016 by the U.S. Geological Survey off Town Neck Beach Sandwich, Massachusetts during field activity 2016-017-FA

Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...

Tags: Atlantic Ocean, CMGP, Cape Cod Bay, Coastal and Marine Geology Program, Gulf of Maine, All tags... Knudsen 3202, Marine Geology, Massachusetts, North America, PNG, R/V Rafael, Sandwich, Sea floor, Town Neck Beach, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, beach, chirp, coast, field activity 2016-017-FA, geomorphology, geoscientificInformation, image, marine geology, marine geophysics, marine geophysics, navigation shotpoint, oceans, sedimentary environments, seismic methods, seismic navigation, seismic profile, seismic reflection, seismic reflection methods, shore, sub-bottom profiling, subbottom, Fewer tags

Geomorphic provinces in the Hudson Canyon region (polyline shapefile, geographic, WGS 84)

The Hudson Canyon begins on the outer continental shelf off the east coast of the United States at about 100-meters (m) water depth and extends offshore southeastward across the continental slope and rise. A multibeam survey was carried out in 2002 to map the bathymetry and backscatter intensity of the sea floor of the Hudson Canyon and adjacent slope and rise. The survey covered an area approximately 205 kilometers (km) in the offshore direction, extending from about 500 m to about 4,000 m water depth, and about 110 km in the alongshore direction, centered on the Hudson Canyon. The sea floor was mapped using a SeaBeam Instruments 2112 multibeam echosounder aboard the National Oceanic and Atmospheric Administration...

Categories: Data; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Coastal and Marine Geology Program (CMGP), Hudson Canyon, Middle Atlantic Bight, NOAA ship Ronald H. Brown, National Oceanic and Atmospheric Administration (NOAA), All tags... New York Bight, North Atlantic Ocean, Rutgers Institute of Coastal and Marine Sciences, SeaBeam Instruments 2112 multibeam, U.S. Geological Survey (USGS), USGS Open-File Report 2004-1441, WHCMSC field activity 2002-050-FA, Woods Hole Coastal and Marine Science Center (WHCMSC), base of slope, canyon floor, canyon floor - filled, canyon wall, geoscientificInformation, imageryBaseMapsEarthCover, interpretation, lower rise, marine geology, morphology, multibeam, ocean sciences, oceans, polyline shapefile, rise valley, sea floor, sea floor mapping, sea-floor characteristics, upper rise, Fewer tags

Offshore of Moriches Inlet, New York

These data are from a 1998 multibeam survey of the sea floor offshore of Moriches Inlet, New York. There are five datasets: bathymetry grid, shaded-relief image, backscatter intensity image, shaded-relief colored by backscatter intensity image, and trackline navigation. The bathymetry shows the shape of the sea floor. Of particular interest are the size, shape, and orientation of bed forms that may indicate sediment movement. The shaded-relief image provides a visualization of the bathymetry that accentuates small features that cannot be effectively shown as contours alone. The image of backscatter intensity provides qualitative information on the sediment texture and roughness of the sea floor. The image of shaded-relief...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Long Island, Middle Atlantic Bight, Montauk Point, New York, New York Bight, All tags... North Atlantic Ocean, backscatter, backscatter intensity, bathymetry, elevation, geoscientificInformation, imageryBaseMapsEarthCover, mid-Atlantic Bight, multibeam, oceans, sea floor, sea floor mapping, shaded-relief bathymetry, tracklines, Fewer tags

Geospatial Data Layers of Shallow Geology, Sea-Floor Texture, and Physiographic Zones from the Inner Continental Shelf of Martha’s Vineyard from Aquinnah to Wasque Point, and Nantucket from Eel Point to Great Point

Geologic, sediment texture, and physiographic zone maps characterize the sea floor south and west of Martha's Vineyard and north of Nantucket, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene marine units provided a foundation on which the surficial maps were created. This mapping is a result of a collaborative effort between the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management to characterize the surface and subsurface geologic framework offshore of...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquinnah, Atlantic Ocean, Chappaquiddick Island, Children's Beach, Chilmark, All tags... Coatue, Dionis Beach, Eel Point, Gay Head, Geography, Geologic Framework, Geomorphology, Geophysics, Great Point, Holocene, Katama Beach, Long Point Wildlife Refuge, Marine Geology, Marine Geology, Martha's Vineyard, Massachusetts (MA), Muskeget Channel, Muskeget Island, Muskeget Island, Nantucket, Nantucket Harbor, Sea floor, Sediment Distribution, Sediment Texture, Sediment thickness, Seismic Interpretation, Shovelful Shoal, South Beach, Squibnocket Point, Surficial Geology, Tisbury Great Pond Beach, Tuckernuck Bank, Tuckernuck Island, Unconformity, Wasque point, stratigraphy, Fewer tags

Elevation of the late Wisconsinan to early Holocene regressive unconformity (Ur) offshore of western and southern Martha's Vineyard and north of Nantucket, Massachusetts

Geologic, sediment texture, and physiographic zone maps characterize the sea floor south and west of Martha's Vineyard and north of Nantucket, Massachusetts. These maps were derived from interpretations of seismic-reflection profiles, high-resolution bathymetry, acoustic-backscatter intensity, bottom photographs, and surficial sediment samples. The interpretation of the seismic stratigraphy and mapping of glacial and Holocene marine units provided a foundation on which the surficial maps were created. This mapping is a result of a collaborative effort between the U.S. Geological Survey and the Massachusetts Office of Coastal Zone Management to characterize the surface and subsurface geologic framework offshore of...

Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 32-bit GeoTIFF, 512i, Aquinnah, Atlantic Ocean, CMGP, All tags... CZM, Cape Cod, Chappaquiddick Island, Children's Beach, Chilmark, Coastal and Marine Geology Program, Coatue, Depth to glacial deposits, Dionis Beach, EdgeTech, Eel Point, Gay Head, Geologic Framework, Great Point, Holocene, Holocene, Interpretation, Katama Beach, Long Point Wildlife Refuge, Lucy Vincent Beach, Marine Geology, Martha's Vineyard, Massachusetts, Massachusetts Office of Coastal Zone Management, Muskeget Channel, Muskeget Island, Nantucket, Nantucket Harbor, Nantucket Sound, Nomans Land, Pleistocene, Regressive Unconformity, Sea floor, Seismic Interpretation, Seismic-reflection Profiles, Shovelful Shoal, South Beach, Squibnocket Beach, Squibnocket Point, Tisbury, Tisbury Great Pond Beach, Tuckernuck Bank, Tuckernuck Island, Tuckernuck Shoal, U.S. Geological Survey, U.S. Geological Survey Open-File Report 2008-1288, U.S. Geological Survey Open-File Report 2012-1006, U.S. Geological Survey Open-File Report 2016-1168, USGS, Vineyard Sound, WHCMSC, Wasque Shoal, Wasque point, Wisconsinan, Woods Hole Coastal and Marine Science Center, geologic contacts, geologic structure, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, marine geology, oceans, scientific interpretation, sea-floor characteristics, sedimentation, unconsolidated deposits, Fewer tags

Geotagged sea-floor images and location of bottom images collected in Long Island Sound, Connecticut and New York, in fall 2017 and spring 2018 by the U.S. Geological Survey, University of Connecticut, and University of New Haven during field activities 2017-056-FA and 2018-018-FA (JPEG images, point shapefile, and CSV file)

Two marine geological surveys were conducted in Long Island Sound, Connecticut and New York, in fall 2017 and spring 2018 by the U.S. Geological Survey, University of Connecticut, and University of New Haven through the Long Island Sound Mapping and Research Collaborative. Sea-floor images and videos were collected at 210 sampling sites within the survey area, and surficial sediment samples were collected at 179 of the sites. The sediment data and the observations from the images and videos are used to identify sediment texture and sea-floor habitats.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, CMHRP, CSV, Coastal and Marine Hazards and Resources Program, Connecticut, All tags... Fishers Island, Fishers Island Sound, GoPro HERO4 Black, JPEG, JPG, Kongsberg Simrad OE1365, LISMaRC, Long Island Sound, Long Island Sound Habitat Mapping, Long Island Sound Mapping and Research Collaborative, NURTEC, New York, Nikon D300, North America, Northeast Underwater Research, Technology and Education Center, R/V Connecticut, SEABOSS, SEABed Observation and Sampling System, U.S. Geological Survey, UConn, USGS, United States, University of Connecticut, University of New Haven, WHCMSC, Woods Hole Coastal and Marine Science Center, bottom images, bottom photographs, continental shelf, field activity 2017-056-FA, field activity 2018-018-FA, geoscientificInformation, ground-truth, image collections, images, location, marine geology, oceans, photographic sampling, photography, photos, sea floor, sea-floor characteristics, seabed images, seabed photographs, seafloor, sediments, shapefile, sound, stations, underwater photography, Fewer tags

2-meter bathymetric data collected in 2016 by the U.S. Geological Survey off Town Neck Beach Sandwich, Massachusetts during field activity 2016-017-FA (bathymetry GeoTIFF)

Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...

Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Atlantic Ocean, CMGP, Cape Cod Bay, Coastal and Marine Geology Program, GeoTIFF, All tags... Gulf of Maine, Marine Geology, Massachusetts, North America, R/V Rafael, SEA SWATHPlus, SEA Submetrix, Sandwich, Town Neck Beach, U.S. Geological Survey, USGS, United States, WHCMSC, Woods Hole Coastal and Marine Science Center, bathymetry, bathymetry, beach, coast, elevation, field activity 2016-017-FA, geomorphology, geoscientificInformation, imageryBaseMapsEarthCover, interferometric sonar, interferometry, marine geology, marine geology, marine geophysics, marine geophysics, oceans, raster, sea floor, sea-floor characteristics, seafloor, sedimentary environments, shore, swath bathymetry, topography, Fewer tags