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

Filter Total Items: 1737

Amplitude blanking related to the pore-filling of gas hydrate in sediments Amplitude blanking related to the pore-filling of gas hydrate in sediments

Seismic indicators of gas-hydrate-bearing sediments include elevated interval velocities and amplitude reduction of seismic reflections owing to the presence of gas hydrate in the sediment's pore spaces. However, large amplitude blanking with relatively low interval velocities observed at the Blake Ridge has been enigmatic because realistic seismic models were absent to explain the...
Authors
Myung W. Lee, William P. Dillon

Seabed observation & sampling system Seabed observation & sampling system

SEABOSS has proved to be a valuable addition to the USGS data-acquisition and processing field program. It has allowed researchers to collect high-quality images and seabed samples in a timely manner. It is a simple, dependable and trouble-free system with a track record of over 3,000 deployments. When used as part of the USGS seafloor mapping acquisition, processing, and ground-truth...
Authors
D. Blackwood, K. Parolski

Archive of water gun subbottom data collected during USGS cruise SEAX 95007 New York Bight, 7-25, May 1995 Archive of water gun subbottom data collected during USGS cruise SEAX 95007 New York Bight, 7-25, May 1995

Beginning in 1995, the USGS, in cooperation with the U.S Army Corps of Engineers (USACE), New York District, began a program to generate reconnaissance maps of the sea floor offshore of the New York-New Jersey metropolitan area, one of the most populated coastal regions of the United States. The goal of this mapping program is to provide a regional synthesis of the sea-floor environment...
Authors
J. C. Hill, W. C. Schwab, D.S. Foster

Historical trace metal accumulation in the sediments of an urbanized region of the Lake Champlain watershed, Burlington, Vermont Historical trace metal accumulation in the sediments of an urbanized region of the Lake Champlain watershed, Burlington, Vermont

This study documents the history of pollution inputs in the Burlington region of Lake Champlain, Vermont using measurements of anthropogenic metals (Cu, Zn, Cr, Pb, Cd, and Ag) in four age-dated sediment cores. Sediments record a history of contamination in a region and can be used to assess the changing threat to biota over time and to evaluate the effectiveness of discharge regulations...
Authors
E.L. Mecray, J.W. King, P.G. Appleby, A.S. Hunt

Protection of fish spawning habitat for the conservation of warm temperate reef fish fisheries of shelf-edge reefs of Florida Protection of fish spawning habitat for the conservation of warm temperate reef fish fisheries of shelf-edge reefs of Florida

We mapped and briefly describe the surficial geology of selected examples of shelf-edge reefs (50–120 m deep) of the southeastern United States, which are apparently derived from ancient Pleistocene shorelines and are intermittently distributed throughout the region. These reefs are ecologically significant because they support a diverse array of fish and invertebrate species, and they...
Authors
Christopher C. Koenig, Felicia C. Coleman, Churchill B. Grimes, Gary R. Fitzhugh, Kathryn M. Scanlon, Christopher T. Gledhill, Mark Grace

Louisiana coastal wetlands: a resource at risk Louisiana coastal wetlands: a resource at risk

Approximately half the Nation's original wetland habitats have been lost over the past 200 years. In part, this has been a result of natural evolutionary processes, but human activities, such as dredging wetlands for canals or draining and filling for agriculture, grazing, or development, share a large part of the responsibility for marsh habitat alteration and destruction. Louisiana's...
Authors
S. Jeffress Williams

Urban seismic experiments investigate Seattle fault and basin Urban seismic experiments investigate Seattle fault and basin

In the past decade, Earth scientists have recognized the seismic hazards that crustal faults and sedimentary basins pose to Seattle, Washington (Figure 1). In 1998, the US. Geological Survey and its collaborators initiated a series of urban seismic studies of the upper crust to better map seismogenic structures and sedimentary basins in the Puget Lowland. These studies are called the...
Authors
Thomas M. Brocher, Thomas L. Pratt, Ken C. Creager, Robert S. Crosson, William P. Steele, Craig S. Weaver, Arthur D. Frankel, Anne Trohu, Catherine M. Snelson, Kate C. Miller, Steven H. Harder, Uri S. ten Brink

Workshop discusses community models for coastal sediment transport Workshop discusses community models for coastal sediment transport

Numerical models of coastal sediment transport are increasingly used to address problems ranging from remediation of contaminated sediments, to siting of sewage outfalls and disposal sites, to evaluating impacts of coastal development. They are also used as a test bed for sediment-transport algorithms, to provide realistic settings for biological and geochemical models, and for a variety...
Authors
Christopher R. Sherwood, Richard P. Signell, Courtney K. Harris, Bradford Butman
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