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Page C Valentine, PhD

Page Valentine, Research Geologist with the Woods Hole Coastal and Marine Science Center.

Science and Products

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SeaBOSS on the fantail of the R/V Connecticut on Long Island Sound

Stellwagen Bank National Marine Sanctuary Geologic Mapping

These field activity data releases, publications, and maps are part of the combined effort by the U.S. Geological Survey and NOAA’s Stellwagen Bank National Marine Sanctuary to map the geologic substrates of Stellwagen Bank and to study the ecology of fish and invertebrate species that inhabit the bank’s sandy substrates off Boston, Massachusetts.
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
link

Stellwagen Bank National Marine Sanctuary Geologic Mapping

These field activity data releases, publications, and maps are part of the combined effort by the U.S. Geological Survey and NOAA’s Stellwagen Bank National Marine Sanctuary to map the geologic substrates of Stellwagen Bank and to study the ecology of fish and invertebrate species that inhabit the bank’s sandy substrates off Boston, Massachusetts.
Learn More
link
Map of seabed geology and sun-illuminated topography, Stellwagen Bank

Geologic and Biologic Studies of Georges Bank and the New England Shelf

Large areas of Georges Bank (which lies in both the US and Canada) and the New England Shelf have been closed to fishing for 25 years in order to conserve and rebuild fishery stocks. These closures, along with an increased need to improve characterization of the seabed, have provided the opportunity to map the extent of gravel substrates that dominant parts of the region, study the effects of...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
link

Geologic and Biologic Studies of Georges Bank and the New England Shelf

Large areas of Georges Bank (which lies in both the US and Canada) and the New England Shelf have been closed to fishing for 25 years in order to conserve and rebuild fishery stocks. These closures, along with an increased need to improve characterization of the seabed, have provided the opportunity to map the extent of gravel substrates that dominant parts of the region, study the effects of...
Learn More
link
Map of sun-illuminated backscatter, Stellwagen Bank and Massachusetts Bay

National Seafloor Mapping and Benthic Habitat Studies

The Stellwagen Bank region, located off Boston, Massachusetts, just east of Massachusetts Bay between Cape Cod and Cape Ann, is a glaciated terrain of shallow banks and deep basins with water depths ranging from 20 to 200 meters. The region is heavily utilized by humans and marine species. It serves as a National Marine Sanctuary; a rich commercial and recreational fishing ground; a disposal site...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
link

National Seafloor Mapping and Benthic Habitat Studies

The Stellwagen Bank region, located off Boston, Massachusetts, just east of Massachusetts Bay between Cape Cod and Cape Ann, is a glaciated terrain of shallow banks and deep basins with water depths ranging from 20 to 200 meters. The region is heavily utilized by humans and marine species. It serves as a National Marine Sanctuary; a rich commercial and recreational fishing ground; a disposal site...
Learn More
link
Photograph of didemnum

Marine Nuisance Species

This project is complete and the website is archived and no longer updated. This archived website assembles and communicates information on the distribution, ecology, and marine habitat impacts of the invasive colonial ascidian invader Didemnum vexillum Colonies of Didemnum vexillum exhibit a wide variety of morphological variants. Where current velocity is low, they form long, ropey or beard-like...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
link

Marine Nuisance Species

This project is complete and the website is archived and no longer updated. This archived website assembles and communicates information on the distribution, ecology, and marine habitat impacts of the invasive colonial ascidian invader Didemnum vexillum Colonies of Didemnum vexillum exhibit a wide variety of morphological variants. Where current velocity is low, they form long, ropey or beard-like...
Learn More
Filter Total Items: 19

Geospatial datasets of seabed topography, sediment mobility, and the distribution of geologic substrates in quadrangle 5 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

The U.S. Geological Survey (USGS), in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration (NOAA), has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The interpretive datasets and source information presented here are for quadrangle 5, which is one of 18 similarly siz
By
Woods Hole Coastal and Marine Science Center

Sea-floor Sediment Samples, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank from September 2020 to August 2021

These data are a part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. The work was conducted in collaboration with the Stellwagen Bank Natio
By
Woods Hole Coastal and Marine Science Center

Station Information, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank from May 2016 to April 2019

These data are a part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. The work was conducted in collaboration with the Stellwagen Bank Natio
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in September, 2014, U.S. Geological Survey Field Activity 2014-055-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Woods Hole Coastal and Marine Science Center

Station information, seabed imagery, and CTD instrument data collected on Stellwagen Bank in January, 2016, U.S. Geological Survey Field Activity 2016-004-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Station information, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank in December 2015, U.S. Geological Survey Field Activity 2015-074-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Station information, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank in September, 2016, U.S. Geological Survey Field Activity 2016-038-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in July and August, 2019, U.S. Geological Survey Field Activity 2019-008-FA (ver. 1.1, May 2023)

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Woods Hole Coastal and Marine Science Center

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May and June, 2015, U.S. Geological Survey Field Activity 2015-017-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Woods Hole Coastal and Marine Science Center

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in December, 2014, U.S. Geological Survey Field Activity 2014-070-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in November, 2014, U.S. Geological Survey Field Activity 2014-066-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in May, 2014, U.S. Geological Survey Field Activity 2014-015-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Woods Hole Coastal and Marine Science Center
Filter Total Items: 33

Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in quadrangle 5 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

The U.S. Geological Survey, in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration, has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The area being mapped using geophysical and geological data includes the SBNMS and the surrounding region, which totals approximatel
By
Woods Hole Coastal and Marine Science Center

Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in Quadrangle 6 of the Stellwagen Bank National Marine Sanctuary Region offshore of Boston, Massachusetts

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration's National Marine Sanctuary Program, has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The area is approximately 3,700 square kilometers (km2) and is subdivided into 18 quadrangles. Seven maps, at a scale of 1:25,000,
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea floor image maps showing topography, sun-illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts

No abstract available.
By
Woods Hole Coastal and Marine Science Center

Shaded relief, sea floor topography, and backscatter intensity of Massachusetts Bay and the Stellwagen Bank region offshore of Boston, Massachusetts

No abstract available.

Sea floor topography of the Stellwagen Bank National Marine Sanctuary off Boston, Massachusetts

No abstract available.

Sun-illuminated sea floor topography of the Stellwagen Bank National Marine Sanctuary off Boston, Massachusetts

No abstract available.

Backscatter intensity and sun-illuminated sea floor topography of the Stellwagen Bank National Marine Sanctuary off Boston, Massachusetts

No abstract available.

Shaded relief and sea floor topography of Quadrangle 2 in western Massachusetts Bay offshore of Boston, Massachusetts

No abstract available.

Backscatter intensity, shaded relief, and sea floor topography of Quadrangle 2 in western Massachusetts Bay offshore of Boston, Massachusetts

No abstract available.

Maps Showing Sea Floor Topography, Sun-Illuminated Sea Floor Topography, and Backscatter Intensity of Quadrangles 1 and 2 in the Great South Channel Region, Western Georges Bank

The Great South Channel separates the western part of Georges Bank from Nantucket Shoals and is a major conduit for the exchange of water between the Gulf of Maine to the north and the Atlantic Ocean to the south. Water depths range mostly between 65 and 80 m in the region. A minimum depth of 45 m occurs in the east-central part of the mapped area, and a maximum depth of 100 m occurs in the northw

Backscatter Intensity and Sun-Illuminated Sea Floor Topography of Quadrangles 1 and 2

The Great South Channel separates the western part of Georges Bank from Nantucket Shoals and is a major conduit for the exchange of water between the Gulf of Maine to the north and the Atlantic Ocean to the south. Water depths range mostly between 65 and 80 m in the region. A minimum depth of 45 m occurs in the east-central part of the mapped area, and a maximum depth of 100 m occurs in the northw

Sun-Illuminated Sea Floor Topography of Quadrangle 1 in the Great South Channel, Western Georges Bank

The Great South Channel separates the western part of Georges Bank from Nantucket Shoals and is a major conduit for the exchange of water between the Gulf of Maine to the north and the Atlantic Ocean to the south. Water depths range mostly between 65 and 80 m in the region. A minimum depth of 45 m occurs in the east-central part of the mapped area, and a maximum depth of 100 m occurs in the northw
Image shows map of Stellwagen Bank region near Boston, a yellow highlighted box shows area mapped in study.
Mapped area of Stellwagen Bank region
Mapped area of Stellwagen Bank region
Image shows map of Stellwagen Bank region near Boston, a yellow highlighted box shows area mapped in study.

Mapped area of Stellwagen Bank region

Mapped area of Stellwagen Bank region

Shows the location of mapped area (highlighted in yellow) in the Stellwagen Bank region off Boston, Massachusetts.

By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
Image shows map of Stellwagen Bank region near Boston, a yellow highlighted box shows area mapped in study.

Mapped area of Stellwagen Bank region

Mapped area of Stellwagen Bank region

Shows the location of mapped area (highlighted in yellow) in the Stellwagen Bank region off Boston, Massachusetts.

By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
Image shows topographic map of seabed, various formations of different elevations are present
Stellwagen Bank sun-illuminated topographic imagery
Stellwagen Bank sun-illuminated topographic imagery
Image shows topographic map of seabed, various formations of different elevations are present

Stellwagen Bank sun-illuminated topographic imagery

Stellwagen Bank sun-illuminated topographic imagery

Sun-illuminated imagery and boulder ridges of Stellwagen Bank, near Boston, MA.

By
Coastal and Marine Hazards and Resources Program, Coastal and Marine Hazards and Resources Program
Image shows topographic map of seabed, various formations of different elevations are present

Stellwagen Bank sun-illuminated topographic imagery

Stellwagen Bank sun-illuminated topographic imagery

Sun-illuminated imagery and boulder ridges of Stellwagen Bank, near Boston, MA.

By
Coastal and Marine Hazards and Resources Program, Coastal and Marine Hazards and Resources Program
Image shows seafloor ruggedness map of seabed. Blue, green, and yellow shading indicate difference in ruggedness.
Seafloor ruggedness map of Stellwater Bank
Seafloor ruggedness map of Stellwater Bank
Image shows seafloor ruggedness map of seabed. Blue, green, and yellow shading indicate difference in ruggedness.

Seafloor ruggedness map of Stellwater Bank

Seafloor ruggedness map of Stellwater Bank

Seafloor ruggedness map of Stellwagen Bank basin, taken in 2015 near Boston, Massachusetts.

By
Coastal and Marine Hazards and Resources Program
Image shows seafloor ruggedness map of seabed. Blue, green, and yellow shading indicate difference in ruggedness.

Seafloor ruggedness map of Stellwater Bank

Seafloor ruggedness map of Stellwater Bank

Seafloor ruggedness map of Stellwagen Bank basin, taken in 2015 near Boston, Massachusetts.

By
Coastal and Marine Hazards and Resources Program
Filter Total Items: 42

Sediment classification and the characterization, identification, and mapping of geologic substrates for the glaciated Gulf of Maine seabed and other terrains, providing a physical framework for ecological research and seabed management

A geologic substrate is a surface (or volume) of sediment or rock where physical, chemical, and biological processes occur, such as the movement and deposition of sediment, the formation of bedforms, and the attachment, burrowing, feeding, reproduction, and sheltering of organisms. Seabed mapping surveys in the Stellwagen Bank region off Boston, Massachusetts, from 1993 to 2004 have led to the dev
Authors
Page C. Valentine
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Submarine glacial landforms on the Bay of Fundy–northern Gulf of Maine continental shelf

The Bay of Fundy–northern Gulf of Maine region surrounds the southern part of Nova Scotia, encompassing, from west to east, the Bay of Fundy, Grand Manan Basin, German Bank, Browns Bank, Northeast Channel and northeastern Georges Bank (Fig. 1a, b). During the last glacial maximum (c. 24–20 14C ka BP), the SE margin of the Laurentide Ice Sheet (LIS) occupied the study area, the rest of the Gulf of
Authors
B.J. Todd, J. Shaw, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Observations of recruitment and colonization by tunicates and associated invertebrates using giant one-meter2 recruitment plates at Woods Hole, Massachusetts

Large recruitment plates measuring 1 × 1 m were deployed over an 18-month period from September 2013 to March 2015 for the purpose of documenting recruitment and colonization processes of marine invertebrate species at Woods Hole, Massachusetts. Each side of two plates was subdivided into 16 subareas (25 × 25 cm), and an observational strategy was developed whereby, at approximately two-week inter
Authors
Page C. Valentine, M.R. Carman, Dann S. Blackwood
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Surficial geology and shaded seafloor relief of Georges Bank, Fundian Channel and Northeast Channel, Gulf of Maine

Georges Bank is a shallow submarine bank that lies south of Nova Scotia and east of Cape Cod and bounds the seaward side of the Gulf of Maine. The international boundary between Canada and the United States transects the bank, and the eastern part of the bank (~7500 square kilometres) lies in Canadian territory. This map shows the surficial geology of a part of Georges Bank at a scale of 1:50 000.
Authors
B.J. Todd, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Semidiurnal temperature changes caused by tidal front movements in the warm season in seabed habitats on the Georges Bank northern margin and their ecological implications

Georges Bank is a large, shallow feature separating the Gulf of Maine from the Atlantic Ocean. Previous studies demonstrated a strong tidal-mixing front during the warm season on the northern bank margin between thermally stratified water in the Gulf of Maine and mixed water on the bank. Tides transport warm water off the bank during flood tide and cool gulf water onto the bank during ebb tide. Du
Authors
Vincent G. Guida, Page C. Valentine, Leslie B. Gallea
By
Woods Hole Coastal and Marine Science Center

Large submarine sand waves and gravel lag substrates on Georges Bank off Atlantic Canada

Georges Bank is a large, shallow, continental shelf feature offshore of New England and Atlantic Canada. The bank is mantled with a veneer of glacial debris transported during the late Pleistocene from continental areas lying to the north. These sediments were reworked by marine processes during postglacial sea-level transgression and continue to be modified by the modern oceanic regime. The surfi
Authors
B.J. Todd, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Seabed photographs, sediment texture analyses, and sun-illuminated sea floor topography in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts

The U.S. Geological Survey, in collaboration with National Oceanic and Atmospheric Administration's National Marine Sanctuary Program, conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary region from 1993 to 2004. The mapped area is approximately 3,700 km (1,100 nmi) in size and was subdivided into 18 quadrangles. An extensive series of sea-floor maps of t
Authors
Page C. Valentine, Leslie B. Gallea, Dann S. Blackwood, Erin R. Twomey
By
Woods Hole Coastal and Marine Science Center

Shaded seafloor relief, backscatter strength, and surficial geology; German Bank, Scotian Shelf, offshore Nova Scotia

This map is part of a three-map series of German Bank, located on the Scotian Shelf off southern Nova Scotia.  This map is the product of a number of surveys (1997-2003) that used a multibeam sonar system to map 5321 km2 of the seafloor.  Other surveys collected geological data for scientific interpretation.  This map sheet shows the seafloor topography of German Bank in shaded-relief view and sea
Authors
B.J. Todd, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Recolonization of gravel habitats on Georges Bank (northwest Atlantic)

Gravel habitats on continental shelves around the world support productive fisheries but are also vulnerable to disturbance from bottom fishing. We conducted a 2-year in situ experiment to measure the rate of colonization of a gravel habitat on northern Georges Bank in an area closed to fishing (Closed Area II) since December 1994. Three large (0.25 m2) sediment trays containing defaunated pebble
Authors
Jeremy S. Collie, Jerome M. Hermsen, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Processes influencing the transport and fate of contaminated sediments in the coastal ocean– Boston Harbor and Massachusetts Bay

Most of the major urban centers of the United States including Boston, New York, Washington, Chicago, New Orleans, Miami, Los Angeles, San Francisco, and Seattle—are on a coast (fig. 1.1). All of these cities discharge treated sewage effluent into adjacent waters. In 2000, 74 percent of the U.S. population lived within 200 kilometers (km) of the coast. Between 1980 and 2002, the population density
Authors
P. Soupy Alexander, Sandra M. Baldwin, Dann S. Blackwood, Jonathan Borden, Michael A. Casso, John Crusius, Joanne Goudreau, Linda H. Kalnejais, Paul J. Lamothe, William R. Martin, Marinna A. Martini, Richard R. Rendigs, Frederick L. Sayles, Richard P. Signell, Page C. Valentine, John C. Warner
By
St. Petersburg Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center

A GIS Library of Multibeam Data for Massachusetts Bay and the Stellwagen Bank National Marine Sanctuary, Offshore of Boston, Massachusetts

Introduction 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 (figure 1a, figure 1b). The mapping was carried out using a Simrad Subsea EM1000 Multibeam Echo Sounder (95 kHz) on the Frederick G. Creed on four cruises between 1994 and 1998. The mapping was conducted in coop
Authors
Bradford Butman, Page C. Valentine, Tammie J. Middleton, William W. Danforth
By
Woods Hole Coastal and Marine Science Center

Glacial landforms on German Bank, Scotian Shelf: evidence for Late Wisconsinan ice-sheet dynamics and implications for the formation of De Geer moraines

The extent and behaviour of the southeast margin of the Laurentide Ice Sheet in Atlantic Canada is of significance in the study of Late Wisconsinan ice sheet-ocean interactions. Multibeam sonar imagery of subglacial, ice-marginal and glaciomarine landforms on German Bank, Scotian Shelf, provides evidence of the pattern of glacial-dynamic events in the eastern Gulf of Maine. Northwest-southeast tre
Authors
Brian J. Todd, Page C. Valentine, Oddvar Longva, John Shaw
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
Celebrating the 5,000th Sample in the Stellwagen Bank National Marine Sanctuary!

Celebrating the 5,000th Sample in the Stellwagen Bank National Marine Sanctuary!

On Friday, July 23rd, Page Valentine, a Research Geologist with the USGS Woods Hole Coastal and Marine Science Center, collected his 5,000th sample in...

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Science and Products

link
SeaBOSS on the fantail of the R/V Connecticut on Long Island Sound

Stellwagen Bank National Marine Sanctuary Geologic Mapping

These field activity data releases, publications, and maps are part of the combined effort by the U.S. Geological Survey and NOAA’s Stellwagen Bank National Marine Sanctuary to map the geologic substrates of Stellwagen Bank and to study the ecology of fish and invertebrate species that inhabit the bank’s sandy substrates off Boston, Massachusetts.
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
link

Stellwagen Bank National Marine Sanctuary Geologic Mapping

These field activity data releases, publications, and maps are part of the combined effort by the U.S. Geological Survey and NOAA’s Stellwagen Bank National Marine Sanctuary to map the geologic substrates of Stellwagen Bank and to study the ecology of fish and invertebrate species that inhabit the bank’s sandy substrates off Boston, Massachusetts.
Learn More
link
Map of seabed geology and sun-illuminated topography, Stellwagen Bank

Geologic and Biologic Studies of Georges Bank and the New England Shelf

Large areas of Georges Bank (which lies in both the US and Canada) and the New England Shelf have been closed to fishing for 25 years in order to conserve and rebuild fishery stocks. These closures, along with an increased need to improve characterization of the seabed, have provided the opportunity to map the extent of gravel substrates that dominant parts of the region, study the effects of...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
link

Geologic and Biologic Studies of Georges Bank and the New England Shelf

Large areas of Georges Bank (which lies in both the US and Canada) and the New England Shelf have been closed to fishing for 25 years in order to conserve and rebuild fishery stocks. These closures, along with an increased need to improve characterization of the seabed, have provided the opportunity to map the extent of gravel substrates that dominant parts of the region, study the effects of...
Learn More
link
Map of sun-illuminated backscatter, Stellwagen Bank and Massachusetts Bay

National Seafloor Mapping and Benthic Habitat Studies

The Stellwagen Bank region, located off Boston, Massachusetts, just east of Massachusetts Bay between Cape Cod and Cape Ann, is a glaciated terrain of shallow banks and deep basins with water depths ranging from 20 to 200 meters. The region is heavily utilized by humans and marine species. It serves as a National Marine Sanctuary; a rich commercial and recreational fishing ground; a disposal site...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
link

National Seafloor Mapping and Benthic Habitat Studies

The Stellwagen Bank region, located off Boston, Massachusetts, just east of Massachusetts Bay between Cape Cod and Cape Ann, is a glaciated terrain of shallow banks and deep basins with water depths ranging from 20 to 200 meters. The region is heavily utilized by humans and marine species. It serves as a National Marine Sanctuary; a rich commercial and recreational fishing ground; a disposal site...
Learn More
link
Photograph of didemnum

Marine Nuisance Species

This project is complete and the website is archived and no longer updated. This archived website assembles and communicates information on the distribution, ecology, and marine habitat impacts of the invasive colonial ascidian invader Didemnum vexillum Colonies of Didemnum vexillum exhibit a wide variety of morphological variants. Where current velocity is low, they form long, ropey or beard-like...
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
link

Marine Nuisance Species

This project is complete and the website is archived and no longer updated. This archived website assembles and communicates information on the distribution, ecology, and marine habitat impacts of the invasive colonial ascidian invader Didemnum vexillum Colonies of Didemnum vexillum exhibit a wide variety of morphological variants. Where current velocity is low, they form long, ropey or beard-like...
Learn More
Filter Total Items: 19

Geospatial datasets of seabed topography, sediment mobility, and the distribution of geologic substrates in quadrangle 5 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

The U.S. Geological Survey (USGS), in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration (NOAA), has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The interpretive datasets and source information presented here are for quadrangle 5, which is one of 18 similarly siz
By
Woods Hole Coastal and Marine Science Center

Sea-floor Sediment Samples, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank from September 2020 to August 2021

These data are a part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. The work was conducted in collaboration with the Stellwagen Bank Natio
By
Woods Hole Coastal and Marine Science Center

Station Information, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank from May 2016 to April 2019

These data are a part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. The work was conducted in collaboration with the Stellwagen Bank Natio
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in September, 2014, U.S. Geological Survey Field Activity 2014-055-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Woods Hole Coastal and Marine Science Center

Station information, seabed imagery, and CTD instrument data collected on Stellwagen Bank in January, 2016, U.S. Geological Survey Field Activity 2016-004-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Station information, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank in December 2015, U.S. Geological Survey Field Activity 2015-074-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Station information, Seabed and Sample Imagery, and CTD Instrument Data Collected on Stellwagen Bank in September, 2016, U.S. Geological Survey Field Activity 2016-038-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in July and August, 2019, U.S. Geological Survey Field Activity 2019-008-FA (ver. 1.1, May 2023)

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Woods Hole Coastal and Marine Science Center

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in May and June, 2015, U.S. Geological Survey Field Activity 2015-017-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Woods Hole Coastal and Marine Science Center

Sea-floor sediment samples, seabed imagery, and CTD instrument data collected on Stellwagen Bank in December, 2014, U.S. Geological Survey Field Activity 2014-070-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in November, 2014, U.S. Geological Survey Field Activity 2014-066-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea-Floor Sediment Samples, Seabed Imagery, and CTD Instrument Data Collected on Stellwagen Bank in May, 2014, U.S. Geological Survey Field Activity 2014-015-FA

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen B
By
Woods Hole Coastal and Marine Science Center
Filter Total Items: 33

Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in quadrangle 5 of the Stellwagen Bank National Marine Sanctuary region offshore of Boston, Massachusetts

The U.S. Geological Survey, in cooperation with the National Marine Sanctuary Program of the National Oceanic and Atmospheric Administration, has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The area being mapped using geophysical and geological data includes the SBNMS and the surrounding region, which totals approximatel
By
Woods Hole Coastal and Marine Science Center

Seabed maps showing topography, ruggedness, backscatter intensity, sediment mobility, and the distribution of geologic substrates in Quadrangle 6 of the Stellwagen Bank National Marine Sanctuary Region offshore of Boston, Massachusetts

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration's National Marine Sanctuary Program, has conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary (SBNMS) region since 1993. The area is approximately 3,700 square kilometers (km2) and is subdivided into 18 quadrangles. Seven maps, at a scale of 1:25,000,
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sea floor image maps showing topography, sun-illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts

No abstract available.
By
Woods Hole Coastal and Marine Science Center

Shaded relief, sea floor topography, and backscatter intensity of Massachusetts Bay and the Stellwagen Bank region offshore of Boston, Massachusetts

No abstract available.

Sea floor topography of the Stellwagen Bank National Marine Sanctuary off Boston, Massachusetts

No abstract available.

Sun-illuminated sea floor topography of the Stellwagen Bank National Marine Sanctuary off Boston, Massachusetts

No abstract available.

Backscatter intensity and sun-illuminated sea floor topography of the Stellwagen Bank National Marine Sanctuary off Boston, Massachusetts

No abstract available.

Shaded relief and sea floor topography of Quadrangle 2 in western Massachusetts Bay offshore of Boston, Massachusetts

No abstract available.

Backscatter intensity, shaded relief, and sea floor topography of Quadrangle 2 in western Massachusetts Bay offshore of Boston, Massachusetts

No abstract available.

Maps Showing Sea Floor Topography, Sun-Illuminated Sea Floor Topography, and Backscatter Intensity of Quadrangles 1 and 2 in the Great South Channel Region, Western Georges Bank

The Great South Channel separates the western part of Georges Bank from Nantucket Shoals and is a major conduit for the exchange of water between the Gulf of Maine to the north and the Atlantic Ocean to the south. Water depths range mostly between 65 and 80 m in the region. A minimum depth of 45 m occurs in the east-central part of the mapped area, and a maximum depth of 100 m occurs in the northw

Backscatter Intensity and Sun-Illuminated Sea Floor Topography of Quadrangles 1 and 2

The Great South Channel separates the western part of Georges Bank from Nantucket Shoals and is a major conduit for the exchange of water between the Gulf of Maine to the north and the Atlantic Ocean to the south. Water depths range mostly between 65 and 80 m in the region. A minimum depth of 45 m occurs in the east-central part of the mapped area, and a maximum depth of 100 m occurs in the northw

Sun-Illuminated Sea Floor Topography of Quadrangle 1 in the Great South Channel, Western Georges Bank

The Great South Channel separates the western part of Georges Bank from Nantucket Shoals and is a major conduit for the exchange of water between the Gulf of Maine to the north and the Atlantic Ocean to the south. Water depths range mostly between 65 and 80 m in the region. A minimum depth of 45 m occurs in the east-central part of the mapped area, and a maximum depth of 100 m occurs in the northw
Image shows map of Stellwagen Bank region near Boston, a yellow highlighted box shows area mapped in study.
Mapped area of Stellwagen Bank region
Mapped area of Stellwagen Bank region
Image shows map of Stellwagen Bank region near Boston, a yellow highlighted box shows area mapped in study.

Mapped area of Stellwagen Bank region

Mapped area of Stellwagen Bank region

Shows the location of mapped area (highlighted in yellow) in the Stellwagen Bank region off Boston, Massachusetts.

By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
Image shows map of Stellwagen Bank region near Boston, a yellow highlighted box shows area mapped in study.

Mapped area of Stellwagen Bank region

Mapped area of Stellwagen Bank region

Shows the location of mapped area (highlighted in yellow) in the Stellwagen Bank region off Boston, Massachusetts.

By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
Image shows topographic map of seabed, various formations of different elevations are present
Stellwagen Bank sun-illuminated topographic imagery
Stellwagen Bank sun-illuminated topographic imagery
Image shows topographic map of seabed, various formations of different elevations are present

Stellwagen Bank sun-illuminated topographic imagery

Stellwagen Bank sun-illuminated topographic imagery

Sun-illuminated imagery and boulder ridges of Stellwagen Bank, near Boston, MA.

By
Coastal and Marine Hazards and Resources Program, Coastal and Marine Hazards and Resources Program
Image shows topographic map of seabed, various formations of different elevations are present

Stellwagen Bank sun-illuminated topographic imagery

Stellwagen Bank sun-illuminated topographic imagery

Sun-illuminated imagery and boulder ridges of Stellwagen Bank, near Boston, MA.

By
Coastal and Marine Hazards and Resources Program, Coastal and Marine Hazards and Resources Program
Image shows seafloor ruggedness map of seabed. Blue, green, and yellow shading indicate difference in ruggedness.
Seafloor ruggedness map of Stellwater Bank
Seafloor ruggedness map of Stellwater Bank
Image shows seafloor ruggedness map of seabed. Blue, green, and yellow shading indicate difference in ruggedness.

Seafloor ruggedness map of Stellwater Bank

Seafloor ruggedness map of Stellwater Bank

Seafloor ruggedness map of Stellwagen Bank basin, taken in 2015 near Boston, Massachusetts.

By
Coastal and Marine Hazards and Resources Program
Image shows seafloor ruggedness map of seabed. Blue, green, and yellow shading indicate difference in ruggedness.

Seafloor ruggedness map of Stellwater Bank

Seafloor ruggedness map of Stellwater Bank

Seafloor ruggedness map of Stellwagen Bank basin, taken in 2015 near Boston, Massachusetts.

By
Coastal and Marine Hazards and Resources Program
Filter Total Items: 42

Sediment classification and the characterization, identification, and mapping of geologic substrates for the glaciated Gulf of Maine seabed and other terrains, providing a physical framework for ecological research and seabed management

A geologic substrate is a surface (or volume) of sediment or rock where physical, chemical, and biological processes occur, such as the movement and deposition of sediment, the formation of bedforms, and the attachment, burrowing, feeding, reproduction, and sheltering of organisms. Seabed mapping surveys in the Stellwagen Bank region off Boston, Massachusetts, from 1993 to 2004 have led to the dev
Authors
Page C. Valentine
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Submarine glacial landforms on the Bay of Fundy–northern Gulf of Maine continental shelf

The Bay of Fundy–northern Gulf of Maine region surrounds the southern part of Nova Scotia, encompassing, from west to east, the Bay of Fundy, Grand Manan Basin, German Bank, Browns Bank, Northeast Channel and northeastern Georges Bank (Fig. 1a, b). During the last glacial maximum (c. 24–20 14C ka BP), the SE margin of the Laurentide Ice Sheet (LIS) occupied the study area, the rest of the Gulf of
Authors
B.J. Todd, J. Shaw, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Observations of recruitment and colonization by tunicates and associated invertebrates using giant one-meter2 recruitment plates at Woods Hole, Massachusetts

Large recruitment plates measuring 1 × 1 m were deployed over an 18-month period from September 2013 to March 2015 for the purpose of documenting recruitment and colonization processes of marine invertebrate species at Woods Hole, Massachusetts. Each side of two plates was subdivided into 16 subareas (25 × 25 cm), and an observational strategy was developed whereby, at approximately two-week inter
Authors
Page C. Valentine, M.R. Carman, Dann S. Blackwood
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Surficial geology and shaded seafloor relief of Georges Bank, Fundian Channel and Northeast Channel, Gulf of Maine

Georges Bank is a shallow submarine bank that lies south of Nova Scotia and east of Cape Cod and bounds the seaward side of the Gulf of Maine. The international boundary between Canada and the United States transects the bank, and the eastern part of the bank (~7500 square kilometres) lies in Canadian territory. This map shows the surficial geology of a part of Georges Bank at a scale of 1:50 000.
Authors
B.J. Todd, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Semidiurnal temperature changes caused by tidal front movements in the warm season in seabed habitats on the Georges Bank northern margin and their ecological implications

Georges Bank is a large, shallow feature separating the Gulf of Maine from the Atlantic Ocean. Previous studies demonstrated a strong tidal-mixing front during the warm season on the northern bank margin between thermally stratified water in the Gulf of Maine and mixed water on the bank. Tides transport warm water off the bank during flood tide and cool gulf water onto the bank during ebb tide. Du
Authors
Vincent G. Guida, Page C. Valentine, Leslie B. Gallea
By
Woods Hole Coastal and Marine Science Center

Large submarine sand waves and gravel lag substrates on Georges Bank off Atlantic Canada

Georges Bank is a large, shallow, continental shelf feature offshore of New England and Atlantic Canada. The bank is mantled with a veneer of glacial debris transported during the late Pleistocene from continental areas lying to the north. These sediments were reworked by marine processes during postglacial sea-level transgression and continue to be modified by the modern oceanic regime. The surfi
Authors
B.J. Todd, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Seabed photographs, sediment texture analyses, and sun-illuminated sea floor topography in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts

The U.S. Geological Survey, in collaboration with National Oceanic and Atmospheric Administration's National Marine Sanctuary Program, conducted seabed mapping and related research in the Stellwagen Bank National Marine Sanctuary region from 1993 to 2004. The mapped area is approximately 3,700 km (1,100 nmi) in size and was subdivided into 18 quadrangles. An extensive series of sea-floor maps of t
Authors
Page C. Valentine, Leslie B. Gallea, Dann S. Blackwood, Erin R. Twomey
By
Woods Hole Coastal and Marine Science Center

Shaded seafloor relief, backscatter strength, and surficial geology; German Bank, Scotian Shelf, offshore Nova Scotia

This map is part of a three-map series of German Bank, located on the Scotian Shelf off southern Nova Scotia.  This map is the product of a number of surveys (1997-2003) that used a multibeam sonar system to map 5321 km2 of the seafloor.  Other surveys collected geological data for scientific interpretation.  This map sheet shows the seafloor topography of German Bank in shaded-relief view and sea
Authors
B.J. Todd, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Recolonization of gravel habitats on Georges Bank (northwest Atlantic)

Gravel habitats on continental shelves around the world support productive fisheries but are also vulnerable to disturbance from bottom fishing. We conducted a 2-year in situ experiment to measure the rate of colonization of a gravel habitat on northern Georges Bank in an area closed to fishing (Closed Area II) since December 1994. Three large (0.25 m2) sediment trays containing defaunated pebble
Authors
Jeremy S. Collie, Jerome M. Hermsen, Page C. Valentine
By
Woods Hole Coastal and Marine Science Center

Processes influencing the transport and fate of contaminated sediments in the coastal ocean– Boston Harbor and Massachusetts Bay

Most of the major urban centers of the United States including Boston, New York, Washington, Chicago, New Orleans, Miami, Los Angeles, San Francisco, and Seattle—are on a coast (fig. 1.1). All of these cities discharge treated sewage effluent into adjacent waters. In 2000, 74 percent of the U.S. population lived within 200 kilometers (km) of the coast. Between 1980 and 2002, the population density
Authors
P. Soupy Alexander, Sandra M. Baldwin, Dann S. Blackwood, Jonathan Borden, Michael A. Casso, John Crusius, Joanne Goudreau, Linda H. Kalnejais, Paul J. Lamothe, William R. Martin, Marinna A. Martini, Richard R. Rendigs, Frederick L. Sayles, Richard P. Signell, Page C. Valentine, John C. Warner
By
St. Petersburg Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center

A GIS Library of Multibeam Data for Massachusetts Bay and the Stellwagen Bank National Marine Sanctuary, Offshore of Boston, Massachusetts

Introduction 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 (figure 1a, figure 1b). The mapping was carried out using a Simrad Subsea EM1000 Multibeam Echo Sounder (95 kHz) on the Frederick G. Creed on four cruises between 1994 and 1998. The mapping was conducted in coop
Authors
Bradford Butman, Page C. Valentine, Tammie J. Middleton, William W. Danforth
By
Woods Hole Coastal and Marine Science Center

Glacial landforms on German Bank, Scotian Shelf: evidence for Late Wisconsinan ice-sheet dynamics and implications for the formation of De Geer moraines

The extent and behaviour of the southeast margin of the Laurentide Ice Sheet in Atlantic Canada is of significance in the study of Late Wisconsinan ice sheet-ocean interactions. Multibeam sonar imagery of subglacial, ice-marginal and glaciomarine landforms on German Bank, Scotian Shelf, provides evidence of the pattern of glacial-dynamic events in the eastern Gulf of Maine. Northwest-southeast tre
Authors
Brian J. Todd, Page C. Valentine, Oddvar Longva, John Shaw
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center
Celebrating the 5,000th Sample in the Stellwagen Bank National Marine Sanctuary!

Celebrating the 5,000th Sample in the Stellwagen Bank National Marine Sanctuary!

On Friday, July 23rd, Page Valentine, a Research Geologist with the USGS Woods Hole Coastal and Marine Science Center, collected his 5,000th sample in...

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