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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

Modeling tidal exchange and dispersion in Boston Harbor Modeling tidal exchange and dispersion in Boston Harbor

Tidal dispersion and the horizontal exchange of water between Boston Harbor and the surrounding ocean are examined with a high-resolution (200 m) depth-averaged numerical model. The strongly varying bathymetry and coastline geometry of the harbor generate complex spatial patterns in the modeled tidal currents which are verified by shipboard acoustic Doppler surveys. Lagrangian exchange...
Authors
Richard P. Signell, Bradford Butman
By
Woods Hole Coastal and Marine Science Center

A model for the generation of two-dimensional surf beat A model for the generation of two-dimensional surf beat

A finite difference model predicting group-forced long waves in the nearshore is constructed with two interacting parts: an incident wave model providing time-varying radiation stress gradients across the nearshore, and a long-wave model which solves the equations of motion for the forcing imposed by the incident waves. Both shallow water group-bound long waves and long waves generated...
Authors
Jeffrey H. List
By
Woods Hole Coastal and Marine Science Center

Limitations of quantitative analysis of deep crustal seismic reflection data: Examples from GLIMPCE Limitations of quantitative analysis of deep crustal seismic reflection data: Examples from GLIMPCE

Amplitude preservation in seismic reflection data can be obtained by a relative true amplitude (RTA) processing technique in which the relative strength of reflection amplitudes is preserved vertically as well as horizontally, after compensating for amplitude distortion by near-surface effects and propagation effects. Quantitative analysis of relative true amplitudes of the Great Lakes
Authors
Myung W. Lee, Deborah R. Hutchinson
By
Woods Hole Coastal and Marine Science Center

Characteristics of a sandy depositional lobe on the outer Mississippi fan from SeaMARC IA sidescan sonar images Characteristics of a sandy depositional lobe on the outer Mississippi fan from SeaMARC IA sidescan sonar images

SeaMARC IA sidescan sonar images of the distal reaches of a depositional lobe on the Mississippi Fan show that channelized rather than unconfined transport was the dominant transport mechanism for coarse-grained sediment during the formation of this part of the deep-sea fan. Overbank sheet flow of sands was not an important process in the transport and deposition of the sandy and silty...
Authors
David C. Twichell, William C. Schwab, C. Hans Nelson, Neil H. Kenyon, Homa J. Lee
By
Woods Hole Coastal and Marine Science Center

Seasonal fluctuations in sea level on the South Carolina shelf and their relationship to the Gulf Stream Seasonal fluctuations in sea level on the South Carolina shelf and their relationship to the Gulf Stream

Near-bottom pressure measurements obtained over a 9-month period in 1978 on the outer continental shelf off South Carolina document that sea level rose 35 to 50 cm between July and October. Records of coastal sea level showed a similar rise. When the pressure and coastal sea level records were corrected for the effects of wind stress and temperature, the largest portion of the rise in...
Authors
Marlene A. Noble, Guy R. Gelfenbaum
By
Woods Hole Coastal and Marine Science Center

Seismic images of a Grenvillian terrane boundary Seismic images of a Grenvillian terrane boundary

A series of gently dipping reflection zones extending to mid-crustal depths is recorded by seismic data from Lakes Ontario and Erie. These prominent reflection zones define a broad complex of southeast-dipping ductile thrust faults in the interior of the Grenville orogen. One major reflection zone provides the first image of a proposed Grenvillian suture—the listric boundary zone between
Authors
Bernd Milkereit, D. A. Forsyth, Alan G. Green, A. Davidson, S. Hanmer, Deborah R. Hutchinson, W. J. Hinze, R.F. Mereu
By
Woods Hole Coastal and Marine Science Center

Colloid formation during waste form reaction: Implications for nuclear waste disposal Colloid formation during waste form reaction: Implications for nuclear waste disposal

Insoluble plutonium- and americium-bearing colloidal particles formed during simulated weathering of a high-level nuclear waste glass. Nearly 100 percent of the total plutonium and americium in test ground water was concentrated in these submicrometer particles. These results indicate that models of actinide mobility and repository integrity, which assume complete solubility of actinides...
Authors
J. K. Bates, J. Bradley, A. Teetsov, C. R. Bradley, Marilyn R. Buchholtz ten Brink
By
Woods Hole Coastal and Marine Science Center

Variations in the reflectivity of the moho transition zone beneath the Midcontinent Rift System of North America: results from true amplitude analysis of GLIMPCE data Variations in the reflectivity of the moho transition zone beneath the Midcontinent Rift System of North America: results from true amplitude analysis of GLIMPCE data

True amplitude processing of The Great Lakes International Multidisciplinary Program on Crustal Evolution seismic reflection data from the Midcontinent Rift System of North America shows large differences in the reflectivity of the Moho transition zone beneath the axial rift, beneath the rift flanks, and outside of the rift. The Moho reflection from the axial rift has a discontinuous...
Authors
Deborah R. Hutchinson, Myung W. Lee, John C. Behrendt, William F. Cannon, Adrian G. Mann
By
Woods Hole Coastal and Marine Science Center

A reassessment of the role of tidal dispersion in estuaries and bays A reassessment of the role of tidal dispersion in estuaries and bays

The role of tidal dispersion is reassessed, based on a consideration of the relevant physical mechanisms, particularly those elucidated by numerical simulations of tide-induced dispersion. It appears that the principal influence of tidal currents on dispersion occurs at length scales of the tidal excursion and smaller; thus the effectiveness of tidal dispersion depends on the relative...
Authors
W. Rockwell Geyer, Richard P. Signell
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

Distribution and effects of shallow gas on bulk estuarine sediment properties Distribution and effects of shallow gas on bulk estuarine sediment properties

Gas bubble are present in sediments covering approximately 30% of the main stem of Chesapeake Bay, with bubbles occurring at the sediment-water interface in 18% of the main stem sediments. This biogenic gas is found either in the sediments in the lower salinity reaches of the Bay, or confined to sediments which overline infilled palaeodrainage channels formed during the Wisconsinan low...
Authors
J. M. Hill, J.P. Halka, R. Conkwright, K. Koczot, S. Coleman
By
Woods Hole Coastal and Marine Science Center
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