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Earthquake recurrence estimates for northern Caribbean faults from combinatorial optimization

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Woods Hole Coastal and Marine Science Center

2023 Annual Report

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Pragmatically mapping Phragmites with unoccupied aerial systems: A comparison of invasive species land cover classification using RGB and multispectral imagery

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Hydroacoustic observations reveal drivers of mixing and salinization of a karst subterranean estuary during intense precipitation

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Scientific literature and information products produced by Woods Hole Coastal and Marine Science Center staff

Featured Journal Article

Invasive Phragmites plants on the shore of a lake

Pragmatically mapping Phragmites with unoccupied aerial systems: A comparison of invasive species land cover classification using RGB and multispectral imagery

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Featured USGS Series

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Woods Hole Coastal and Marine Science Center—2023 Annual Report.  The 2023 annual report highlights accomplishments, includes a list of publications, and summarizes the work of the center and each of the science groups.

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Sound Waves

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Coastal and Marine Research News from Across the USGS

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Filter Total Items: 1737

Sea-floor character and sedimentary processes in the vicinity of Woods Hole, Massachusetts Sea-floor character and sedimentary processes in the vicinity of Woods Hole, Massachusetts

Continuous-coverage multibeam bathymetric models and sidescan-sonar imagery have been verified with high-resolution seismic-reflection profiles, sediment sampling, and bottom photography. Together these data layers provide detailed base maps that yield topographic, compositional, and environmental perspectives of the sea floor in the vicinity of Woods Hole, an important harbor and major...
Authors
Lawrence J. Poppe, Katherine Y. McMullen, David S. Foster, Dann S. Blackwood, S. Jeffress Williams, Seth D. Ackerman, Steven R. Barnum, Rick T. Brennan
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Sidescan-sonar imagery and surficial geologic interpretations of the sea floor in central Rhode Island Sound Sidescan-sonar imagery and surficial geologic interpretations of the sea floor in central Rhode Island Sound

The U.S. Geological Survey (USGS) has been working with the National Oceanic and Atmospheric Administration (NOAA) to interpret the surficial geology of areas along the northeastern coast of the United States. During 2004, the NOAA Ship RUDE conducted Hydrographic Survey H11321 in Rhode Island Sound. This sidescan-sonar and bathymetry survey covers an area of 93 km? located 12 km...
Authors
K.Y. McMullen, L.J. Poppe, J. F. Denny, T.A. Haupt, J.M. Crocker
By
Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Time-series photographs of the sea floor in western Massachusetts Bay, 1996 - 2005 Time-series photographs of the sea floor in western Massachusetts Bay, 1996 - 2005

Time-series photographs of the sea floor were obtained from an instrumented tripod deployed in western Massachusetts Bay at LT-A (42° 22.6' N, 70° 47.0' W; 32 m water depth; fig. 1) from December 1989 through September 2005. The photographs provide time-series observations of physical changes of the sea floor, near-bottom water turbidity, and life on the sea floor. Two reports present...
Authors
Bradford Butman, P. Soupy Dalyander, Michael H. Bothner, William N. Lange
By
Woods Hole Coastal and Marine Science Center

Estimating pore-space gas hydrate saturations from well log acoustic data Estimating pore-space gas hydrate saturations from well log acoustic data

Relating pore-space gas hydrate saturation to sonic velocity data is important for remotely estimating gas hydrate concentration in sediment. In the present study, sonic velocities of gas hydrate–bearing sands are modeled using a three-phase Biot-type theory in which sand, gas hydrate, and pore fluid form three homogeneous, interwoven frameworks. This theory is developed using well log
Authors
Myung W. Lee, William F. Waite
By
Energy Resources Program, Central Energy Resources Science Center, Woods Hole Coastal and Marine Science Center

Preliminary results of the U.S. Nuclear Regulatory Commission collaborative research program to assess tsunami hazard for nuclear power plants on the Atlantic and gulf coasts Preliminary results of the U.S. Nuclear Regulatory Commission collaborative research program to assess tsunami hazard for nuclear power plants on the Atlantic and gulf coasts

In response to the 2004 Indian Ocean Tsunami, the United States Nuclear Regulatory Commission (US NRC) initiated a long-term research program to improve understanding of tsunami hazard levels for nuclear facilities in the United States. For this effort, the US NRC organized a collaborative research program with the United States Geological Survey (USGS) and other key researchers for the...
Authors
A.M. Kammerer, Uri S. ten Brink, David C. Twitchell, Eric L. Geist, Jason D. Chaytor, J. Locat, H. J. Lee, Brian J. Buczkowski, M. Sansoucy
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center

Nitrogen biogeochemistry of submarine groundwater discharge Nitrogen biogeochemistry of submarine groundwater discharge

To investigate the role of the seepage zone in transport, chemical speciation, and attenuation of nitrogen loads carried by submarine groundwater discharge, we collected nearshore groundwater samples (n = 328) and examined the distribution and isotopic signature (δ15N) of nitrate and ammonium. In addition, we estimated nutrient fluxes from terrestrial and marine groundwater sources. We...
Authors
K.D. Kroeger, M.A. Charette
By
Woods Hole Coastal and Marine Science Center

Quaternary geology and sedimentary processes in the vicinity of Six Mile Reef, eastern Long Island Sound Quaternary geology and sedimentary processes in the vicinity of Six Mile Reef, eastern Long Island Sound

Six Mile Reef, a sandy, 22-m-high shoal trending east-west and located about 7.8 km off the Connecticut coast, has a core of postglacial marine deltaic deposits mantled by tidally reworked modern sediments. Sedimentary environments off the eastern end of the shoal are characterized by processes associated with long-term erosion or nondeposition, a mobile-sediment-limited seafloor armored...
Authors
L.J. Poppe, S.J. Williams, M. S. Moser, N.A. Forfinski, H.F. Stewart, E. F. Doran
By
Woods Hole Coastal and Marine Science Center

Chapter 31 Sensitivity and spin-up times of cohesive sediment transport models used to simulate bathymetric change Chapter 31 Sensitivity and spin-up times of cohesive sediment transport models used to simulate bathymetric change

Bathymetric change in tidal environments is modulated by watershed sediment yield, hydrodynamic processes, benthic composition, and anthropogenic activities. These multiple forcings combine to complicate simple prediction of bathymetric change; therefore, numerical models are necessary to simulate sediment transport. Errors arise from these simulations, due to inaccurate initial...
Authors
D. H. Schoellhamer, N. K. Ganju, P. R. Mineart, M. A. Lionberger
By
Water Resources Mission Area, Woods Hole Coastal and Marine Science Center, California Water Science Center

Seabed mapping and characterization of sediment variability using the usSEABED data base Seabed mapping and characterization of sediment variability using the usSEABED data base

We present a methodology for statistical analysis of randomly located marine sediment point data, and apply it to the US continental shelf portions of usSEABED mean grain size records. The usSEABED database, like many modern, large environmental datasets, is heterogeneous and interdisciplinary. We statistically test the database as a source of mean grain size data, and from it provide a...
Authors
J.A. Goff, C.J. Jenkins, Williams S. Jeffress
By
Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center, St. Petersburg Coastal and Marine Science Center, Woods Hole Coastal and Marine Science Center

Geologic effects and coastal vulnerability to sea-level rise, erosion, and storms Geologic effects and coastal vulnerability to sea-level rise, erosion, and storms

A combination of natural and human factors are driving coastal change and making coastal regions and populations increasingly vulnerable. Sea level, a major agent of coastal erosion, has varied greatly from -120 m below present during glacial period low-stands to + 4 to 6 m above present during interglacial warm periods. Geologic and tide gauge data show that global sea level has risen...
Authors
S.J. Williams, B.T. Gutierrez, E.R. Thieler, E. Pendleton
By
Woods Hole Coastal and Marine Science Center

Northeast storms ranked by wind stress and wave-generated bottom stress observed in Massachusetts Bay, 1990-2006 Northeast storms ranked by wind stress and wave-generated bottom stress observed in Massachusetts Bay, 1990-2006

Along the coast of the northeastern United States, strong winds blowing from the northeast are often associated with storms called northeasters, coastal storms that strongly influence weather. In addition to effects caused by wind stress, the sea floor is affected by bottom stress associated with these storms. Bottom stress caused by orbital velocities associated with surface waves...
Authors
B. Butman, C. R. Sherwood, P.S. Dalyander
By
Woods Hole Coastal and Marine Science Center

A Visual Basic program to plot sediment grain-size data on ternary diagrams A Visual Basic program to plot sediment grain-size data on ternary diagrams

Sedimentologic datasets are typically large and compiled into tables or databases, but pure numerical information can be difficult to understand and interpret. Thus, scientists commonly use graphical representations to reduce complexities, recognize trends and patterns in the data, and develop hypotheses. Of the graphical techniques, one of the most common methods used by...
Authors
L.J. Poppe, A.H. Eliason
By
Woods Hole Coastal and Marine Science Center
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