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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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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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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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Coastal and Marine Research News from Across the USGS

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Filter Total Items: 1737

Lithology, stratigraphy, and paleoenvironments of the Mobil 312-1 well, Georges Bank Basin, US North Atlantic outer continental shelf Lithology, stratigraphy, and paleoenvironments of the Mobil 312-1 well, Georges Bank Basin, US North Atlantic outer continental shelf

The Mobil 312-1 hydrocarbon exploratory well, southeastern Georges Bank Basin penetrated a section entirely composed of sedimentary rocks that range from Middle to Pliocene age. Carbonates are the dominant lithologies in the intervals at 6096-3444 m, 2560-2096 m and 1067-887 m; siliciclastics make up most of the remaining section. Although inferred paleoenvironments range primarily from...
Authors
L.J. Poppe, C. W. Poag, R.W. Stanton
By
Woods Hole Coastal and Marine Science Center

Mineralogy of the silt fraction in surficial sediments from the United States mid-Atlantic shelf, slope and rise Mineralogy of the silt fraction in surficial sediments from the United States mid-Atlantic shelf, slope and rise

An analysis of the abundances and distributions of silt-sized heavy minerals from the U.S. mid-Atlantic outer continental shelf, slope, and rise shows that heavy minerals constitute a substantially greater weight percent of the silt fraction than that of the sand fraction regardless of environment and sediment texture. Concentrations of silt-sized heavy minerals progressively decrease...
Authors
L.J. Poppe, J.A. Commeau
By
Woods Hole Coastal and Marine Science Center

Mid-Mesozoic (Mid-Jurassic to Early Cretaceous) evolution of the Georges Bank Basin, U.S. North Atlantic outer continental shelf: Sedimentology of the Conoco 145-1 well Mid-Mesozoic (Mid-Jurassic to Early Cretaceous) evolution of the Georges Bank Basin, U.S. North Atlantic outer continental shelf: Sedimentology of the Conoco 145-1 well

The Conoco 145-1 exploratory well, located in the southeastern portion of the Georges Bank Basin, was drilled to a total depth of 4303 m below the sea floor. The oldest sedimentary rocks sampled are of Middle Jurassic age (Late Bathonian-Callovian). A dolomite-limestone-evaporite sequence dominates the section below 3917 m; limestone is the predominant lithology in the intervals of 3271...
Authors
L.J. Poppe, C. W. Poag, R.W. Stanton
By
Woods Hole Coastal and Marine Science Center

Characteristics and processing of seismic data collected on thick, floating ice: Results from the Ross Ice Shelf, Antarctica Characteristics and processing of seismic data collected on thick, floating ice: Results from the Ross Ice Shelf, Antarctica

Coincident reflection and refraction data, collected in the austral summer of 1988/89 by Stanford University and the Geophysical Division of the Department of Scientific and Industrial Research, New Zealand, imaged the crust beneath the Ross Ice Shelf, Antarctica. The Ross Ice Shelf is a unique acquisition environment for seismic reflection profiling because of its thick, floating ice...
Authors
Bruce C. Beaudoin, Uri S. ten Brink, Tim A. Stern
By
Woods Hole Coastal and Marine Science Center

Deep Sea Drilling Project Site 612 bolide event: New evidence of a late Eocene impact-wave deposit and a possible impact site, US east coast Deep Sea Drilling Project Site 612 bolide event: New evidence of a late Eocene impact-wave deposit and a possible impact site, US east coast

A remarkable >60-m-thick, upward-fining, polymictic, marine boulder bed is distributed over >15 000 km2 beneath Chesapeake Bay and the surrounding Middle Atlantic Coastal Plain and inner continental shelf. The wide varieties of clast lithologies and microfossil assemblages were derived from at least seven known Cretaceous, Paleocene, and Eocene stratigraphic units. The supporting pebbly...
Authors
W. Wei, C. Wylie Poag, Lawrence J. Poppe, David W. Folger, David S. Powars, Robert B. Mixon, Lucy E. Edwards, Scott Bruce
By
Woods Hole Coastal and Marine Science Center

Depositional and tectonic framework of the rift basins of Lake Baikal from multichannel seismic data Depositional and tectonic framework of the rift basins of Lake Baikal from multichannel seismic data

Recent multichannel seismic reflection data from Lake Baikal, located in a large, active, continental rift in central Asia, image three major stratigraphic units totalling 3.5 to 7.5 km thick in four subbasins. A major change in rift deposition and faulting between the oldest and middle-rift units probably corresponds to the change from slow to fast rifting. A brief comparison of the...
Authors
D. R. Hutchinson, A.J. Golmshtok, L.P. Zonenshain, T.C. Moore, C.A. Scholz, Kim D. Klitgord
By
Woods Hole Coastal and Marine Science Center

Fe-Mn nodule field indicated by GLORIA, north of the Puerto Rico Trench Fe-Mn nodule field indicated by GLORIA, north of the Puerto Rico Trench

A 2,500-km2 area of sea floor on the south-eastern flank of the Greater Antilles Outer Ridge north of the Puerto Rico Trench displays anomalously high acoustic backscattering properties on GLORIA longrange sidescan-sonar data. Previously collected dredges, bottom photographs, and sediment cores indicate the presence of Fe-Mn nodules within the area of high backscatter. We were able to...
Authors
Kathryn M. Scanlon, D.G. Masson
By
Woods Hole Coastal and Marine Science Center

Tide- and wind-driven flushing of Boston Harbor, Massachusetts Tide- and wind-driven flushing of Boston Harbor, Massachusetts

The flushing of Boston Harbor, a shallow, tidally dominated embayment with little fresh water input, is investigated using a depth-averaged model. The modeled tidal currents exhibit strong spatial variability and ebb/flood asymmetry due to complex topography and coastline geometry and were verified by shipboard acoustic Doppler current profiler measurements. At the inlets to the harbor...
Authors
Richard Signell
By
Woods Hole Coastal and Marine Science Center

Contaminant transport and accumulation in Massachusetts Bay and Boston Harbor: A summary of U.S. Geological Survey studies Contaminant transport and accumulation in Massachusetts Bay and Boston Harbor: A summary of U.S. Geological Survey studies

The U.S. Geological Survey (USGS) is conducting studies in Boston Harbor, Massachusetts Bay, and Cape Cod Bay designed to define the geologic framework of the region and to understand the transport and accumulation of contaminated sediments. The region is being studied because of environmental problems caused by the introduction of wastes for a long time, because a new ocean outfall (to...
Authors
Bradford Butman, Michael H. Bothner, J.C. Hathaway, H. L. Jenter, H.J. Knebel, F.T. Manheim, R. P. Signell
By
Woods Hole Coastal and Marine Science Center

Depressions and other lake-floor morphologic features in deep water, southern Lake Michigan Depressions and other lake-floor morphologic features in deep water, southern Lake Michigan

The most common features are subcircular depressions, commonly compound, that are irregularly distributed across the lake floor. The depressions are most common in the southern basin of the lake where lacustrine sediments are more than a few meters thick, corresponding to water depths greater than about 90 m. We have divided the depressions into three types on the basis of their internal...
Authors
Steven M. Colman, D.S. Foster, D.W. Harrison
By
Woods Hole Coastal and Marine Science Center

A statistical overview of mass movement characteristics on the North American Atlantic outer continental margin A statistical overview of mass movement characteristics on the North American Atlantic outer continental margin

An analysis of 179 mass movements on the North American Atlantic continental slope and upper rise shows that slope failures have occurred throughout the geographic extent of the outer margin. Although the slope failures show no striking affinity for a particular depth as an origination level, there is a broad, primary mode centered at about 900 m. The resulting slides terminate at almost...
Authors
James S. Booth, Dennis W. O'Leary
By
Woods Hole Coastal and Marine Science Center

Modelling the bathymetry of the Antarctic continental shelf Modelling the bathymetry of the Antarctic continental shelf

Continental shelves are typically covered by relatively shallow waters (
Authors
Uri S. ten Brink, William P. Rogers, R. M. Kirkham
By
Woods Hole Coastal and Marine Science Center
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