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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

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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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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

A Visual Basic program to classify sediments based on gravel-sand-silt-clay ratios A Visual Basic program to classify sediments based on gravel-sand-silt-clay ratios

Nomenclature describing size distributions is important to geologists because grain size is the most basic attribute of sediments. Traditionally, geologists have divided sediments into four size fractions that include gravel, sand, silt, and clay, and classified these sediments based on ratios of the various proportions of the fractions. Definitions of these fractions have long been...
Authors
L.J. Poppe, A.H. Eliason, M. E. Hastings
By
Woods Hole Coastal and Marine Science Center

Potential role of gas hydrate decomposition in generating submarine slope failures Potential role of gas hydrate decomposition in generating submarine slope failures

Gas hydrate decomposition is hypothesized to be a factor in generating weakness in continental margin sediments that may help explain some of the observed patterns of continental margin sediment instability. The processes associated with formation and decomposition of gas hydrate can cause the strengthening of sediments in which gas hydrate grow and the weakening of sediments in which...
Authors
Charles K. Pauli, William III Ussler, William P. Dillon
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Importance of geology to fisheries management: Examples from the northeastern Gulf of Mexico Importance of geology to fisheries management: Examples from the northeastern Gulf of Mexico

Seafloor mapping of shelf-edge habitats in the northeastern Gulf of Mexico demonstrates how sidescan-sonar imagery, seismic-reflection profiling, video data, geologic mapping, sediment sampling, and understanding the regional geologic history can enhance, support, and guide traditional fisheries research and management. New data from the Madison Swanson and Steamboat Lumps Marine...
Authors
Kathryn M. Scanlon, Christopher C. Koenig, Felicia C. Coleman, Margaret W. Miller
By
Woods Hole Coastal and Marine Science Center

Coastal vulnerability assessment of Cape Cod National Seashore to sea-level rise Coastal vulnerability assessment of Cape Cod National Seashore to sea-level rise

A coastal vulnerability index (CVI) was used to map the relative vulnerability of the coast to future sea-level rise within the Cape Cod National Seashore (CACO). The CVI ranks the following in terms of their physical contribution to sea-level rise-related coastal change: geomorphology, regional coastal slope, rate of relative sea-level rise, shoreline change rates, mean tidal range and...
Authors
Erika S. Hammar-Klose, Elizabeth A. Pendleton, E. Robert Thieler, S. Jeffress Williams
By
Woods Hole Coastal and Marine Science Center

Late Holocene estuarine-inner shelf interactions; is there evidence of an estuarine retreat path for Tampa Bay, Florida? Late Holocene estuarine-inner shelf interactions; is there evidence of an estuarine retreat path for Tampa Bay, Florida?

The purpose of this study was to determine if and how a large, modern estuarine system, situated in the middle of an ancient carbonate platform, has affected its adjacent inner shelf both in the past during the last, post-glacial sea-level rise and during the present. An additional purpose was to determine if and how this inner shelf seaward of a major estuary differed from the inner...
Authors
B.T. Donahue, A. C. Hine, S. Tebbens, S. D. Locker, D.C. Twichell
By
Woods Hole Coastal and Marine Science Center

Measured temperature and pressure dependence of compressional (Vp) and shear (Vs) wave speeds in compacted, polycrystalline ice lh Measured temperature and pressure dependence of compressional (Vp) and shear (Vs) wave speeds in compacted, polycrystalline ice lh

We report on laboratory measurements of compressional- and shear-wave speeds in a compacted, polycrystalline ice-Ih sample. The sample was made from triply distilled water that had been frozen into single crystal ice, ground into small grains, and sieved to extract the 180–250 µm diameter fraction. Porosity was eliminated from the sample by compacting the granular ice between a...
Authors
M.B. Helgerud, W.F. Waite, S. H. Kirby, A. Nur
By
Woods Hole Coastal and Marine Science Center

Responses of infaunal populations to benthoscape structure and the potential importance of transition zones Responses of infaunal populations to benthoscape structure and the potential importance of transition zones

Relationships between population abundance and seafloor landscape, or benthoscape, structure were examined for 16 infaunal taxa in eastern Long Island Sound. Based on analyses of a side-scan sonar mosaic, the 19.4-km2 study area was comprised of six distinct large-scale (> km2) benthoscape elements, with varying levels of mesoscale (km2-m2) and small-scale ( m2) physical and biological...
Authors
R.N. Zajac, R. S. Lewis, L.J. Poppe, D.C. Twichell, J. Vozarik, M. L. DiGiacomo-Cohen
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Variation in habitat use by juvenile Acadian redfish, Sebastes fasciatus Variation in habitat use by juvenile Acadian redfish, Sebastes fasciatus

A basic paradigm in behavioral ecology is that organisms expand their distribution as preferred sites become saturated with individuals that reduce the availability of resources (e.g., shelter, prey) on a per capita basis. Previous fish community studies at Stellwagen Bank National Marine Sanctuary have shown that juvenile Acadian redfish Sebastes fasciatus (20 cm TL) also occurred in...
Authors
P.J. Auster, J. Lindholm, P. C. Valentine
By
Woods Hole Coastal and Marine Science Center

Streamer resistivity surveys in delmarva coastal bays Streamer resistivity surveys in delmarva coastal bays

No abstract available.
Authors
Frank T. Manheim, David E. Krantz, Donald S. Snyder, Brian Sturgis
By
Woods Hole Coastal and Marine Science Center

Synimpact-postimpact transition inside Chesapeake Bay crater Synimpact-postimpact transition inside Chesapeake Bay crater

The transition from synimpact to postimpact sedimentation inside Chesapeake Bay impact crater began with accumulation of fallout debris, the final synimpact deposit. Evi dence of a synimpact fallout layer at this site comes from the presence of unusual, millimeter- scale, pyrite microstructures at the top of the Exmore crater-fill breccia. The porous geometry of the pyrite...
Authors
Claude (Wylie) Poag
By
Woods Hole Coastal and Marine Science Center

A fresh look at glacial floods A fresh look at glacial floods

We tend to think of continental-scale ice sheets as rather ponderous affairs, inexorably advancing southward over the landscape and then slowly retreating to the north at the end of each ice age. Over the last 20 years, however, evidence has accumulated that this is a misconception. We now know that the Laurentide Ice Sheet—the largest ice-age glacier—was characterized by thin, marginal...
Authors
Steve M. Colman
By
Woods Hole Coastal and Marine Science Center

Across-shelf sediment transport: Interactions between suspended and bed sediment Across-shelf sediment transport: Interactions between suspended and bed sediment

We use a two-dimensional, time-dependent sediment-transport model to quantify across-shelf transport, deposition, and sorting during wave-driven resuspension events characteristic of those that dominate sediment transport on many continental shelves. Decreases in wave-orbital velocities as water depth increases, and the resulting cross-shelf gradient in bed shear stress favor a net...
Authors
Courtney K. Harris, Patricia L. Wiberg
By
Woods Hole Coastal and Marine Science Center
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