The Sea Floor Mapping Group (SFMG) is a core capability at the Woods Hole Coastal & Marine Science Center (WHCMSC) that provides support for coastal, lacustrine and marine geologic research. The staff has a wide-range of expertise and is responsible for geophysical and sampling data acquisition, processing, interpretation and publication, logistics, design, and research and development. SFMG has...

Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center, Deep Sea Exploration, Mapping and Characterization, Hurricane Sandy

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September 25, 2018

Sea Floor Mapping Group

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November 13, 2023

High-resolution geophysical and geological data collected from outer Cape Cod, Massachusetts during USGS Field Activity 2021-004-FA

The U.S. Geological Survey (USGS) Woods Hole Coastal and Marine Science Center (WHCMSC) completed a bathymetric and shallow seismic-reflection survey during the period of June 9, 2021 to June 24, 2021 in water depths from 2 m to 30 m for a portion of the outer Cape Cod nearshore environment between Marconi and Nauset Beaches. The products from this survey will help to support white shark research

Woods Hole Coastal and Marine Science Center

March 29, 2023

High-resolution geophysical data collected in Nantucket Sound Massachusetts in the vicinity of Horseshoe Shoal, during USGS Field Activity 2022-001-FA

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 o

Woods Hole Coastal and Marine Science Center

July 15, 2022

High-resolution geophysical and geological data collected in Cape Cod Bay, Massachusetts during USGS Field Activities 2019-002-FA and 2019-034-FA (ver. 2.0, September 2022)

Accurate data and maps of sea floor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. To address these concerns the U.S. Geological Survey, in cooperation with the Massachusetts Office of Coastal Zone Management (CZM), comprehensively mapped the Cape Cod Bay sea floor to characterize

Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

April 22, 2021

High-resolution geophysical and geological data collected in Little Egg Inlet and offshore the southern end of Long Beach Island, NJ, during USGS Field Activities 2018-001-FA and 2018-049-FA

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 a

Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

April 9, 2020

Marine Geophysical Data Collected to Support Methane Seep Research Along the U.S. Atlantic Continental Shelf Break and Upper Continental Slope Between the Baltimore and Keller Canyons During U.S. Geological Survey Field Activities 2017-001-FA and 2017-002

In spring and summer 2017, the U.S. Geological Survey's Gas Hydrates Project conducted two cruises aboard the research vessel Hugh R. Sharp to explore the geology, chemistry, ecology, physics, and oceanography of sea-floor methane seeps and water column gas plumes on the northern U.S. Atlantic margin between the Baltimore and Keller Canyons. Split-beam and multibeam echo sounders and a chirp subbo

Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

October 12, 2018

High-resolution geophysical data collected in Lake Powell, Utah-Arizona, U.S. Geological Survey Field Activity 2017-049-FA

High-resolution geophysical mapping of Lake Powell in the Glen Canyon National Recreation Area in Utah and Arizona was conducted between October 8 and November 15, 2017, as part of a collaborative effort between the U.S. Geological Survey and the Bureau of Reclamation to provide high-quality data needed to reassess the area-capacity tables for the Lake Powell reservoir. Seismic data collected duri

Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

July 12, 2017

Seismic reflection and sample data collected offshore of Fire Island, New York in 2014, U.S. Geological Field Activity 2014-009-FA

The U.S. Geological Survey (USGS) conducted a geophysical and sampling survey in October 2014 that focused on a series of shoreface-attached ridges offshore of western Fire Island, NY. Seismic-reflection data, surficial grab samples and bottom photographs and video were collected along the lower shoreface and inner continental shelf. The purpose of this survey was to assess the impact of Hurricane

Woods Hole Coastal and Marine Science Center

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Multibeam-sonar data acquisition

June 4, 2018

Multibeam-sonar data acquisition

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Multibeam-sonar data acquisition

Displays showing themultibeam-sonar data acquisition and the navigation system aboard the R/V Petrel during the geophysical survey in May 2018.

Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

June 4, 2018

Multibeam-sonar data acquisition

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Multibeam-sonar data acquisition

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Displays showing themultibeam-sonar data acquisition and the navigation system aboard the R/V Petrel during the geophysical survey in May 2018.

Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Filter Total Items: 14

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June 26, 2015

Marine geophysical data collected in a shallow back-barrier estuary, Barnegat Bay, New Jersey

In 2011, the U.S. Geological Survey, in cooperation with the New Jersey Department of Environmental Protection, began a multidisciplinary research project to better understand the water quality in Barnegat Bay, New Jersey. This back-barrier estuary is experiencing degraded water quality, algal blooms, loss of seagrass, and increases in oxygen stress, macroalgae, stinging nettles, and brown tide. T

Authors

Brian D. Andrews, Jennifer L. Miselis, William W. Danforth, Barry J. Irwin, Charles R. Worley, Emile M. Bergeron, Dann S. Blackwood

Woods Hole Coastal and Marine Science Center

July 22, 2014

Chirp seismic-reflection data from the Baltimore, Washington, and Norfolk Canyons, U.S. mid-Atlantic margin

A large number of high-resolution geophysical surveys between Cape Hatteras and Georges Bank have been conducted by federal, state, and academic institutions since the turn of the century. A major goal of these surveys is providing a continuous view of bathymetry and shallow stratigraphy at the shelf edge in order to assess levels of geological activity during the current sea level highstand. In 2

Authors

Jeffrey B. Obelcz, Daniel S. Brothers, Uri S. ten Brink, Jason D. Chaytor, Charles R. Worley, Eric M. Moore

Woods Hole Coastal and Marine Science Center

August 5, 2013

Continuous resistivity profiling data from Great South Bay, Long Island, New York

An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York was conducted to assess the importance of submarine groundwater discharge as a potential nonpoint source of nitrogen delivery to Great South Bay. Over 200 kilometers of continuous resistivity profiling data were collected to image the fresh-saline groundwater interface in sediments beneat

Authors

V.A. Cross, J.F. Bratton, K.D. Kroeger, John Crusius, C.R. Worley

Woods Hole Coastal and Marine Science Center

August 7, 2012

Sea-floor geology in central Rhode Island Sound south of Sakonnet Point, Rhode Island

The U.S. Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA) are working together to study the sea floor along the northeastern coast of the United States. NOAA collected multibeam-echosounder data during hydrographic survey H11995 in a 63-square-kilometer area in central Rhode Island Sound, south of Sakonnet Point, Rhode Island. The USGS collected sediment samp

Authors

K.Y. McMullen, L.J. Poppe, S.D. Ackerman, C.R. Worley, M.A. Nadeau, M. V. Van Hoy

Woods Hole Coastal and Marine Science Center

May 8, 2012

Continuous resistivity profiling data from Northport Harbor and Manhasset Bay, Long Island, New York

An investigation of coastal groundwater systems was performed along the North Shore of Long Island, New York, during May 2008 to constrain nutrient delivery to Northport Harbor and Manhasset Bay by delineating locations of likely groundwater discharge. The embayments are bounded by steep moraines and are underlain by thick, fine-grained sediments deposited in proglacial lakes during the last ice a

Authors

V.A. Cross, J.F. Bratton, John Crusius, K.D. Kroeger, C.R. Worley

Woods Hole Coastal and Marine Science Center

April 2, 2012

Archive of single beam and swath bathymetry data collected nearshore of the Gulf Islands National Seashore, Mississippi, from West Ship Island, Mississippi, to Dauphin Island, Alabama: Methods and data report for USGS Cruises 08CCT01 and 08CCT02, July 200

During the summers of 2008 and 2009 the USGS conducted bathymetric surveys from West Ship Island, Miss., to Dauphin Island, Ala., as part of the Northern Gulf of Mexico (NGOM) Ecosystem Change and Hazard Susceptibility project. The survey area extended from the shoreline out to approximately 2 kilometers and included the adjacent passes (fig. 1). The bathymetry was primarily used to create a top

Authors

Nancy T. DeWitt, James G. Flocks, Elizabeth A. Pendleton, Mark E. Hansen, B.J. Reynolds, Kyle W. Kelso, Dana S. Wiese, Charles R. Worley

Coastal and Marine Hazards and Resources Program, St. Petersburg Coastal and Marine Science Center, Gulf of Mexico

October 4, 2011

Continuous resistivity profiling data from the Corsica River Estuary, Maryland

Submarine groundwater discharge (SGD) into Maryland's Corsica River Estuary was investigated as part of a larger study to determine its importance in nutrient delivery to the Chesapeake Bay. The Corsica River Estuary represents a coastal lowland setting typical of much of the eastern bay. An interdisciplinary U.S. Geological Survey (USGS) science team conducted field operations in the lower estuar

Authors

V.A. Cross, J.F. Bratton, C.R. Worley, John Crusius, K.D. Kroeger

Woods Hole Coastal and Marine Science Center

August 18, 2011

Archive of digital Chirp subbottom profile data collected during USGS cruise 08CCT01, Mississippi Gulf Islands, July 2008

In July of 2008, the U.S. Geological Survey (USGS) conducted geophysical surveys to investigate the geologic controls on island framework from Ship Island to Horn Island, Mississippi, for the Northern Gulf of Mexico (NGOM) Ecosystem Change and Hazard Susceptibility project. Funding was provided through the Geologic Framework and Holocene Coastal Evolution of the Mississippi-Alabama Region Subtask

Authors

Arnell S. Forde, Shawn V. Dadisman, James G. Flocks, Charles R. Worley

Coastal and Marine Hazards and Resources Program, St. Petersburg Coastal and Marine Science Center, Gulf of Mexico

April 20, 2011

Geophysical data collected from the St. Clair River between Michigan and Ontario, Canada (2008-016-FA)

In 2008, the U.S. Geological Survey (USGS), Woods Hole Coastal and Marine Science Center (WHCMSC), in cooperation with the U.S. Army Corps of Engineers conducted a geophysical and sampling survey of the riverbed of the Upper St. Clair River between Port Huron, Mich., and Sarnia, Ontario, Canada. The objectives were to define the Quaternary geologic framework of the riverbed of the St. Clair River

Authors

Jane F. Denny, D. S. Foster, C.R. Worley, Barry J. Irwin

Woods Hole Coastal and Marine Science Center

January 1, 2011

High-resolution geophysical data from the sea floor surrounding the Western Elizabeth Islands, Massachusetts

Geophysical and geospatial data were collected in the nearshore area surrounding the western Elizabeth Islands, Massachusetts on the U.S. Geological Survey research vessel Rafael during September 2010 in a collaborative effort between the U.S. Geological Survey and the Massachusetts, Office of Coastal Zone Management. This report describes the results of the short-term goals of this collaborative

Authors

Elizabeth A. Pendleton, David C. Twichell, David S. Foster, Charles R. Worley, Barry J. Irwin, William W. Danforth

Woods Hole Coastal and Marine Science Center

January 1, 2007

USGS advances in integrated, high-resolution sea-floor mapping: inner continental shelf to estuaries

The U.S. Geological Survey (USGS) has been involved in geological mapping of the sea floor for the past thirty years. Early geophysical and acoustic mapping efforts using GLORIA (Geologic LOng Range Inclined ASDIC) a long-range sidescan-sonar system, provided broad-scale imagery of deep waters within the U.S. Exclusive Economic Zone (EEZ). In the early 1990's, research emphasis shifted from deep-

Authors

J. F. Denny, W. C. Schwab, D. C. Twichell, T. F. O'Brien, W. W. Danforth, D. S. Foster, E. Bergeron, C.W. Worley, B. J. Irwin, B. Butman, P. C. Valentine, W. E. Baldwin, R.A. Morton, E. R. Thieler, D. R. Nichols, B.D. Andrews

Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

January 1, 2007

Progress in the development of shallow-water mapping systems

The USGS (US Geological Survey) Coastal and Marine Geology has deployed an advance autonomous shallow-draft robotic vehicle, Iris, for shallow-water mapping in Apalachicola Bay, Florida. The vehicle incorporates a side scan sonar system, seismic-reflection profiler, single-beam echosounder, and global positioning system (GPS) navigation. It is equipped with an onboard microprocessor-based motor co

Authors

E. Bergeron, C.R. Worley, T. O'Brien

Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center