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

GeoTIFF image of the backscatter intensity of the sea floor offshore of Shinnecock Inlet, New York, in 1998 (3-m resolution, Mercator, WGS 84)

Surveys of the bathymetry and backscatter intensity of the sea floor south of Long Island, New York, were carried out in November 1998 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to explore the bathymetry and backscatter intensity of the sea floor in several areas off the southern coast of Long Island along the 20-meter isobath. Survey areas offshore of Fire Island Inlet, Moriches Inlet, Shinnecock Inlet, and southwest of Montauk Point were about 1 kilometer (km) wide and 10 km long. The area was mapped by the U.S. Geological Survey with support from the Canadian Hydrographic Service and the University...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 3-m resolution, Canadian Coast Guard ship (CCGS) Frederick G. Creed, Canadian Hydrographic Service, Coastal and Marine Geology Program (CMGP), GeoTIFF image, All tags... Long Island, Middle Atlantic Bight, New York, New York Bight, North Atlantic Ocean, Shinnecock Inlet, Simrad EM1000, U.S. Geological Survey (USGS), University of New Brunswick, WHCMSC field activity 1998-015-FA, Woods Hole Coastal and Marine Science Center (WHCMSC), backscatter intensity, geoscientificInformation, imageryBaseMapsEarthCover, mid-Atlantic Bight, multibeam, oceans, sea floor, sea floor mapping, Fewer tags

Multibeam Echosounder, Reson T-20P tracklines, USGS field activity 2017-003-FA, Mississippi River Delta front offshore of southeastern Louisiana (Esri polyline shapefile, GCS WGS 84)

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...

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; 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, Reson, South Pass, Southeast Louisiana, Southwest Pass, T20P, U.S. Geological Survey, USGS, WHCMSC, Woods Hole Coastal and Marine Science Center, backscatter, bathymetry, bathymetry, field activity number 2017-003-FA, geoscientificInformation, location, marine geology, marine geophysics, multibeam backscatter, multibeam bathymetry, multibeam echosounder, multibeam sonar, navigational data, oceans, sea-floor acoustic reflectivity, shapefile, trackline navigation, Fewer tags

GeoTIFF image of shaded-relief bathymetry, colored by backscatter intensity, of the sea floor of the Hudson Shelf Valley (12-m resolution, Mercator, WGS 84)

The Hudson Shelf Valley is the submerged seaward extension of the ancestral Hudson River drainage system and is the largest physiographic feature on the Middle Atlantic continental shelf. The valley begins offshore of New York and New Jersey at about 30-meter (m) water depth, runs southerly and then southeasterly across the Continental Shelf, and terminates on the outer shelf at about 85-m water depth landward of the head of the Hudson Canyon. Portions of the 150-kilometer-long valley were surveyed in 1996, 1998, and 2000 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to map the bathymetry and backscatter...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Canadian Coast Guard ship Frederick G. Creed, Canadian Hydrographic Service (CHS), Coastal and Marine Geology Program (CMGP), GeoTIFF image, Hudson Canyon, All tags... Hudson Shelf Valley, Middle Atlantic Bight, New Jersey, New York, New York Bight, North Atlantic Ocean, Simrad EM1000, U.S. Geological Survey (USGS), USGS Open-File Report 03-372, University of New Brunswick (UNB), WHCMSC field activity 1996-043-FA, WHCMSC field activity 1998-015-FA, WHCMSC field activity 2000-015-FA, Woods Hole Coastal and Marine Science Center (WHCMSC), backscatter intensity, geoscientificInformation, imageryBaseMapsEarthCover, mid-Atlantic Bight, multibeam, oceans, sea floor mapping, shaded-relief bathymetry, Fewer tags

GeoTIFF image of the backscatter intensity of the sea floor of the Sandy Hook artificial reef (2-m resolution, Mercator, WGS 84)

The Sandy Hook artificial reef, located on the sea floor offshore of Sandy Hook, New Jersey was built to create habitat for marine life. The reef was created by the placement of heavy materials on the sea floor; ninety-five percent of the material in the Sandy Hook reef is rock. In 2000, the U.S. Geological Survey surveyed the area using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard (CCG) ship Frederick G. Creed. The purpose of this multibeam survey, done in cooperation with the U.S. Army Corps of Engineers when the Creed was in the New York region in April 2000, was to map the bathymetry and backscatter intensity of the sea floor in the area of the Sandy Hook artificial reef. The collected...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Citation, Downloadable, Map Service; Tags: GeoTIFF image, Middle Atlantic Bight, New Jersey, New York, New York Bight, All tags... North Atlantic Ocean, Sandy Hook artificial reef, Simrad EM1000, backscatter intensity, geoscientificInformation, image mosaics, imageryBaseMapsEarthCover, marine geology, marine geophysics, mid-Atlantic Bight, multibeam, multibeam sonar, oceans, sea floor mapping, sea-floor acoustic reflectivity, sea-floor characteristics, Fewer tags

Tracklines of a multibeam survey of the sea floor of the Sandy Hook artificial reef (polyline shapefile, geographic, WGS 84)

The Sandy Hook artificial reef, located on the sea floor offshore of Sandy Hook, New Jersey was built to create habitat for marine life. The reef was created by the placement of heavy materials on the sea floor; ninety-five percent of the material in the Sandy Hook reef is rock. In 2000, the U.S. Geological Survey surveyed the area using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard (CCG) ship Frederick G. Creed. The purpose of this multibeam survey, done in cooperation with the U.S. Army Corps of Engineers when the Creed was in the New York region in April 2000, was to map the bathymetry and backscatter intensity of the sea floor in the area of the Sandy Hook artificial reef. The collected...

Categories: Data; Types: Citation; Tags: Middle Atlantic Bight, New Jersey, New York, New York Bight, North Atlantic Ocean, All tags... Sandy Hook artificial reef, Simrad EM1000, location, marine geology, marine geophysics, mid-Atlantic Bight, multibeam, navigational data, oceans, polyline shapefile, sea floor mapping, tracklines, 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

2016-037-FA Sampling Survey Data

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...

MGL1111centerdepth.shp: Multibeam bathymetry data collected by the U.S. Geological Survey in the Bering Sea in 2011 during cruise MGL1111, along-track center-beam depths extracted from 100-meter gridded data in shapefile format, geographic coordinates

This shapefile contains center-beam depths for approximately 5727 trackline kilometers of Simrad EM122 multibeam-bathymetry data collected in the Bering Sea during U.S. Geological Survey - Coastal and Marine Geology Program cruise MGL1111 aboard the R/V Marcus G. Langseth. The depth values were extracted from gridded data which were reduced for position, elevation, orientation, water-column sound-speed, and refraction effects.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Dutch Harbor, AK, PCMSC, All tags... Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, U.S. Geological Survey, USGS, bathymetry, continental shelf, environment, geoscientificInformation, geospatial datasets, marine geophysics, marine geophysics, multibeam echo sounder, multibeam sonar, oceans, Fewer tags

MGL1111 multibeam bathymetry in UTM coordinates

MGL1111 multibeam bathymetry data in UTM coordinates in various formats.

MGL1111backsgeo.sd: Multibeam backscatter data collected by the U.S. Geological Survey in the Bering Sea in 2011 during cruise MGL1111, 100-meter gridded data in Fledermaus digital terrain format, geographic coordinate system

This raster dataset represents approximately 49,581 square kilometers of Simrad EM122 multibeam backscatter-intensity data collected in the Bering Sea during U.S. Geological Survey (USGS) cruise MGL1111 aboard the R/V Marcus G. Langseth. Calibrated backscatter-intensity time-series data were adjusted for range-angle, beam pattern, and power-gain distortions.

Types: Citation; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Dutch Harbor, PCMSC, Pacific Coastal and Marine Science Center, All tags... Physical Habitats and Geomorphology, Substrate, U.S. Geological Survey, USGS, backscatter intensity, continental shelf, environment, geoscientificInformation, geospatial datasets, image mosaics, marine geophysics, marine geophysics, multibeam echo sounder, multibeam sonar, oceans, sea-floor acoustic reflectivity, sea-floor characteristics, seismic methods, Fewer tags

MGL1111bathyutm.bag: Multibeam bathymetry data collected by the U.S. Geological Survey in the Bering Sea in 2011 during cruise MGL1111, 100-meter gridded data in bathymetric attributed grid format, UTM coordinate system

This raster dataset represents approximately 49,581 square kilometers of Simrad EM122 multibeam backscatter-intensity data collected in the Bering Sea during U.S. Geological Survey (USGS) cruise MGL1111 aboard the R/V Marcus G. Langseth. Calibrated backscatter-intensity time-series data were adjusted for range-angle, beam pattern, and power-gain distortions.

Types: Citation; Tags: Bathymetry and Elevation, CMHRP, Coastal and Marine Hazards and Resources Program, Dutch Harbor, PCMSC, All tags... Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, U.S. Geological Survey, USGS, bathymetry, continental shelf, environment, geoscientificInformation, geospatial datasets, marine geophysics, marine geophysics, multibeam echo sounder, multibeam sonar, oceans, seismic methods, Fewer tags

MGL1109centerdepth.shp: Multibeam bathymetry data collected by the U.S. Geological Survey in the Gulf of Alaska in 2011 during cruise MGL1109, along-track center-beam depths extracted from 100-meter gridded data in shapefile format, geographic coordinates

This shapefile contains center-beam depths for approximately 5804 trackline kilometers of Simrad EM122 multibeam-bathymetry data collected in the Gulf of Alaska during U.S. Geological Survey (USGS) cruise MGL1109 aboard the R/V Marcus G. Langseth. The depth values were extracted from gridded data which were reduced for position, elevation, orientation, water-column sound-speed, and refraction effects.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Aleutian Basin, Aleutian Trench, Baranof Fan, Bathymetry and Elevation, Bering Sea, All tags... Bowers Ridge, Bowie Seamount, CMHRP, Coastal and Marine Hazards and Resources Program, Dutch Harbor, Extended Continental Shelf, Gulf of Alaska, Kodiak Island, Kodiak Seamount, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Shirshov Ridge, Surveyor Fan, U.S. Geological Survey, USGS, Umnak Plateau, bathymetry, continental shelf, environment, geoscientificInformation, geospatial datasets, marine geophysics, marine geophysics, multibeam echo sounder, multibeam sonar, oceans, Fewer tags

Multibeam backscatter data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2022-001-FA using a Teledyne SeaBat Integrated Dual-Head (IDH) T20-P multibeam echosounder (8-bit GeoTIFF, UTM Zone 19N, WGS 84, 1-m resolution)

In June 2022, the U.S. Geological Survey, in collaboration with the Massachusetts Office of Coastal Zone Management, collected high-resolution geophysical data, in Nantucket Sound to understand the regional geology in the vicinity of Horseshoe Shoal. This effort is part of a long-term collaboration between the USGS and the Commonwealth of Massachusetts to map the State’s waters, support research on the Quaternary evolution of coastal Massachusetts, resolve the influence of sea-level change and sediment supply on coastal evolution, and strengthen efforts to understand the type, distribution, and quality of subtidal marine habitats. This collaboration produces high-resolution geologic data that serve the needs of...

Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Atlantic Ocean, CMHRP, CZM, Coastal and Marine Hazards and Resources Program, DOI, All tags... Department of the Interior, Eldridge Shoal, GeoTIFF, Horseshoe Shoal, Marine Geology, MassCZM, Massachusetts, Massachusetts Office of Coastal Zone Management, Nantucket Sound, R/V Rafael, Reson, Succonnesset Shoal, T20-P, Teledyne, U.S. Geological Survey, USGS, United States of America, WHCMSC, Woods Hole Coastal and Marine Science Center, Wreck Shoal, backscatter, field activity number 2022-001-FA, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, marine geology, marine geophysics, multibeam backscatter, multibeam echosounder, multibeam sonar, sea-floor acoustic reflectivity, time-series, Fewer tags

Seismic reflection-tracklines, shotpoints, and profile images collected in Belfast Bay, Maine using an EdgeTech SB-424 subbottom profiler during USGS field activities 2006-024-FA and 2009-037-FA (Esri polyline, and point shapefiles, WGS 84, and JPEG images)

The U.S. Geological Survey, Woods Hole Coastal and Marine Science Center in cooperation with the University of Maine mapped approximately 50 square kilometers of the seafloor within Belfast Bay, Maine. Three geophysical surveys conducted in 2006, 2008 and 2009 collected swath bathymetric (2006 and 2008) and chirp seismic reflection profile data (2006 and 2009). The project characterized the spatial, morphological and subsurface variability of the Belfast Bay, Maine pockmark field. Pockmarks are large seafloor depressions that are associated with seabed fluid escape.

Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic Ocean, Belfast Bay, CMHRP, Coastal and Marine Hazards and Resources Program, DOI, All tags... Department of the Interior, Edgetech, Field Activity 2006-024-FA, Field Activity 2009-037-FA, Gulf of Maine, Maine, Penobscot Bay, RV Rafael, SB-424, U.S. Geological Survey, USGS, United States of America, University of Maine, WHCMSC, Woods Hole Coastal and Marine Science Center, chirp, geology, geophysics, geoscientificInformation, geospatial datasets, image, location, navigational data, oceans, pockmarks, seismic navigation, seismic profile, seismic reflection, seismic reflection methods, shapefile, sub-botom profiling, trackline navigation, Fewer tags

GeoTIFF image of shaded-relief bathymetry, colored by backscatter intensity, of the sea floor offshore of Moriches Inlet, New York, in 1998 (3-m resolution, Mercator, WGS 84)

Surveys of the bathymetry and backscatter intensity of the sea floor south of Long Island, New York, were carried out in November 1998 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to explore the bathymetry and backscatter intensity of the sea floor in several areas off the southern coast of Long Island along the 20-meter isobath. Survey areas offshore of Fire Island Inlet, Moriches Inlet, Shinnecock Inlet, and southwest of Montauk Point were about 1 kilometer (km) wide and 10 km long. The area was mapped by the U.S. Geological Survey with support from the Canadian Hydrographic Service and the University...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 3-m resolution, Canadian Coast Guard ship (CCGS) Frederick G. Creed, Canadian Hydrographic Service, Coastal and Marine Geology Program (CMGP), GeoTIFF image, All tags... Long Island, Middle Atlantic Bight, Moriches Inlet, New York, New York Bight, North Atlantic Ocean, Simrad EM1000, U.S. Geological Survey (USGS), University of New Brunswick, WHCMSC field activity 1998-015-FA, Woods Hole Coastal and Marine Science Center (WHCMSC), backscatter intensity, geoscientificInformation, imageryBaseMapsEarthCover, mid-Atlantic Bight, multibeam, oceans, sea floor, sea floor mapping, shaded-relief bathymetry, Fewer tags

Grid of the sea-floor bathymetry offshore of Shinnecock Inlet, New York, in 1998 (3-m resolution Esri binary grid, Mercator, WGS 84)

Surveys of the bathymetry and backscatter intensity of the sea floor south of Long Island, New York, were carried out in November 1998 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to explore the bathymetry and backscatter intensity of the sea floor in several areas off the southern coast of Long Island along the 20-meter isobath. Survey areas offshore of Fire Island Inlet, Moriches Inlet, Shinnecock Inlet, and southwest of Montauk Point were about 1 kilometer (km) wide and 10 km long. The area was mapped by the U.S. Geological Survey with support from the Canadian Hydrographic Service and the University...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 3-m grid, Canadian Coast Guard ship (CCGS) Frederick G. Creed, Canadian Hydrographic Service, Coastal and Marine Geology Program (CMGP), Esri binary grid, All tags... Long Island, Middle Atlantic Bight, New York, New York Bight, North Atlantic Ocean, Shinnecock Inlet, Simrad EM1000, U.S. Geological Survey (USGS), University of New Brunswick, WHCMSC field activity 1998-015-FA, Woods Hole Coastal and Marine Science Center (WHCMSC), bathymetry, elevation, geoscientificInformation, imageryBaseMapsEarthCover, mid-Atlantic Bight, multibeam, oceans, sea floor, sea floor mapping, Fewer tags

GeoTIFF image the shaded-relief bathymetry, pseudocolored by backscatter intensity, of the sea floor of the Atlantic Beach artificial reef (2-m resolution, Mercator, WGS 84)

The Atlantic Beach artificial reef, located on the sea floor 3 nautical miles south of Atlantic Beach, New York in about 20 meters water depth, was built to create habitat for marine life. The reef was originally created by placing heavy materials such as tires, automobile bodies and other vehicles, barges, and rock from a dredging project on the sea floor. In 2000, the U.S. Geological Survey surveyed the area using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard (CCG) ship Frederick G. Creed. The purpose of this multibeam survey, done in cooperation with the U.S. Army Corps of Engineers when the Creed was in the New York region in April 2000, was to map the bathymetry and backscatter intensity...

Types: Citation; Tags: Atlantic Beach artificial reef, GeoTIFF image, Middle Atlantic Bight, New Jersey, New York, All tags... New York Bight, North Atlantic Ocean, backscatter intensity, bathymetry, geoscientificInformation, imageryBaseMapsEarthCover, marine geophysics, mid-Atlantic Bight, multibeam, multibeam sonar, oceans, sea floor mapping, sea-floor acoustic reflectivity, sea-floor characteristics, shaded-relief bathymetry, Fewer tags

Bathymetry and backscatter intensity of the sea floor of the Hudson Shelf Valley

The Hudson Shelf Valley is the submerged seaward extension of the ancestral Hudson River drainage system and is the largest physiographic feature on the Middle Atlantic continental shelf. The valley begins offshore of New York and New Jersey at about 30-meter (m) water depth, runs southerly and then southeasterly across the Continental Shelf, and terminates on the outer shelf at about 85-m water depth landward of the head of the Hudson Canyon. Portions of the 150-kilometer-long valley were surveyed in 1996, 1998, and 2000 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to map the bathymetry and backscatter...

Tracklines of a multibeam survey of the Hudson Shelf Valley carried out in 2000 (polyline shapefile, geographic, WGS 84)

The Hudson Shelf Valley is the submerged seaward extension of the ancestral Hudson River drainage system and is the largest physiographic feature on the Middle Atlantic continental shelf. The valley begins offshore of New York and New Jersey at about 30-meter (m) water depth, runs southerly and then southeasterly across the Continental Shelf, and terminates on the outer shelf at about 85-m water depth landward of the head of the Hudson Canyon. Portions of the 150-kilometer-long valley were surveyed in 1996, 1998, and 2000 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to map the bathymetry and backscatter...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Canadian Coast Guard ship Frederick G. Creed, Canadian Hydrographic Service (CHS), Coastal and Marine Geology Program (CMGP), Hudson Canyon, Hudson Shelf Valley, All tags... Middle Atlantic Bight, New Jersey, New York, New York Bight, North Atlantic Ocean, Simrad EM1000, U.S. Geological Survey (USGS), USGS Open-File Report 03-372, University of New Brunswick (UNB), WHCMSC field activity 2000-015-FA, Woods Hole Coastal and Marine Science Center (WHCMSC), location, multibeam, oceans, polyline shapefile, tracklines, Fewer tags