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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

Methane hydrate studies: Delineating properties of host sediments to establish reproducible decomposition kinetics Methane hydrate studies: Delineating properties of host sediments to establish reproducible decomposition kinetics

We have presented a summary of measurements on the physical properties of sediments relevant to methane hydrate recovery. The data includes not only geotechnical determinations, but also the CMT data that gives porosity values and pathways through the sediment material. The results show that CMT techniques can be used to study sediment properties on a micrometer-size scale. Since the...
Authors
Devinder Mahajan, Phillip Servio, Keith W. Jones, Huan Feng, William J. Winters
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Economic impacts of anthropogenic activities on coastlines of the United States Economic impacts of anthropogenic activities on coastlines of the United States

Anthropogenic activities primarily impact coasts by reducing sediment inputs, altering sediment transport processes, and accelerating sediment losses to the offshore. These activities include: sand and gravel extraction, navigation and shore protection works; non-structural shoreline management strategies such as beach nourishment, sand by-passing and beach scraping, dams and flood...
Authors
Orville T. Magoon, S. Jeffress Williams, Linda K. Lent, James A. Richmond, Donald D. Treadwell, Scott L. Douglass, Billy L. Edge, Lesley C. Ewing, Anthony P. Pratt
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Hydrogeologic setting and ground water flow beneath a section of Indian River Bay, Delaware Hydrogeologic setting and ground water flow beneath a section of Indian River Bay, Delaware

The small bays along the Atlantic coast of the Delmarva Peninsula (Delaware, Maryland, and Virginia) are a valuable natural resource, and an asset for commerce and recreation. These coastal bays also are vulnerable to eutrophication from the input of excess nutrients derived from agriculture and other human activities in the watersheds. Ground water discharge may be an appreciable source...
Authors
David E. Krantz, Frank T. Manheim, John F. Bratton, Daniel J. Phelan
By
Water Resources Mission Area, Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

Methane hydrate formation in partially water-saturated Ottawa sand Methane hydrate formation in partially water-saturated Ottawa sand

Bulk properties of gas hydrate-bearing sediment strongly depend on whether hydrate forms primarily in the pore fluid, becomes a load-bearing member of the sediment matrix, or cements sediment grains. Our compressional wave speed measurements through partially water-saturated, methane hydrate-bearing Ottawa sands suggest hydrate surrounds and cements sediment grains. The three Ottawa sand...
Authors
W.F. Waite, W.J. Winters, D.H. Mason
By
Woods Hole Coastal and Marine Science Center

Limnological and climatic environments at Upper Klamath Lake, Oregon during the past 45 000 years Limnological and climatic environments at Upper Klamath Lake, Oregon during the past 45 000 years

Upper Klamath Lake, in south-central Oregon, contains long sediment records with well-preserved diatoms and lithological variations that reflect climate-induced limnological changes. These sediment archives complement and extend high resolution terrestrial records along a north-south transect that includes areas influenced by the Aleutian Low and Subtropical High, which control both...
Authors
J.P. Bradbury, Steven M. Colman, W.E. Dean
By
Woods Hole Coastal and Marine Science Center

Record of late Pleistocene glaciation and deglaciation in the southern Cascade Range. I. Petrological evidence from lacustrine sediment in Upper Klamath Lake, southern Oregon Record of late Pleistocene glaciation and deglaciation in the southern Cascade Range. I. Petrological evidence from lacustrine sediment in Upper Klamath Lake, southern Oregon

Petrological and textural properties of lacustrine sediments from Upper Klamath Lake, Oregon, reflect changing input volumes of glacial flour and thus reveal a detailed glacial history for the southern Cascade Range between about 37 and 15 ka. Magnetic properties vary as a result of mixing different amounts of the highly magnetic, glacially generated detritus with less magnetic, more...
Authors
R. L. Reynolds, J. G. Rosenbaum, J. Rapp, M.W. Kerwin, J.P. Bradbury, S. Colman, D. Adam
By
Woods Hole Coastal and Marine Science Center

Coastal-change and glaciological map of the Saunders Coast area, Antarctica: 1972-97 Coastal-change and glaciological map of the Saunders Coast area, Antarctica: 1972-97

Satellite images from 1972 to 1997 have been used to prepare a map showing glaciological features of the Saunders Coast area, Antarctica. Analysis of the imagery shows a trend toward ice-front retreat that may be a result of changing environmental conditions.
Authors
Jane G. Ferrigno, Richard S. Williams, Kevin M. Foley
By
Woods Hole Coastal and Marine Science Center, Florence Bascom Geoscience Center

Coastal vulnerability assessment of Gulf Islands National Seashore (GUIS) to sea-level rise Coastal vulnerability assessment of Gulf Islands National Seashore (GUIS) 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 Gulf Islands National Seashore (GUIS) in Mississippi and Florida. 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...
Authors
Elizabeth A. Pendleton, Erika S. Hammar-Klose, E. Robert Thieler, S. Jeffress Williams
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

A new hypothesis and exploratory model for the formation of large-scale inner-shelf sediment sorting and "rippled scour depressions" A new hypothesis and exploratory model for the formation of large-scale inner-shelf sediment sorting and "rippled scour depressions"

Recent observations of inner continental shelves in many regions show numerous collections of relatively coarse sediment, which extend kilometers in the cross-shore direction and are on the order of 100m wide. These "rippled scour depressions" have been interpreted to indicate concentrated cross-shelf currents. However, recent observations strongly suggest that they are associated with...
Authors
A.B. Murray, E.R. Thieler
By
Woods Hole Coastal and Marine Science Center

A visual basic program to generate sediment grain-size statistics and to extrapolate particle distributions A visual basic program to generate sediment grain-size statistics and to extrapolate particle distributions

Measures that describe and summarize sediment grain-size distributions are important to geologists because of the large amount of information contained in textural data sets. Statistical methods are usually employed to simplify the necessary comparisons among samples and quantify the observed differences. The two statistical methods most commonly used by sedimentologists to describe...
Authors
L.J. Poppe, A.H. Eliason, M. E. Hastings
By
Woods Hole Coastal and Marine Science Center

Wave- and tidally-driven flow and sediment flux across a fringing coral reef: Southern Molokai, Hawaii Wave- and tidally-driven flow and sediment flux across a fringing coral reef: Southern Molokai, Hawaii

The fringing coral reef off the south coast of Molokai, Hawaii is currently being studied as part of a US Geological Survey (USGS) multi-disciplinary project that focuses on geologic and oceanographic processes that affect coral reef systems. For this investigation, four instrument packages were deployed across the fringing coral reef during the summer of 2001 to understand the processes...
Authors
C. D. Storlazzi, A.S. Ogston, Michael H. Bothner, M.E. Field, M.K. Presto
By
Woods Hole Coastal and Marine Science Center

Physical properties and rock physics models of sediment containing natural and laboratory-formed methane gas hydrate Physical properties and rock physics models of sediment containing natural and laboratory-formed methane gas hydrate

This paper presents results of shear strength and acoustic velocity (p-wave) measurements performed on: (1) samples containing natural gas hydrate from the Mallik 2L-38 well, Mackenzie Delta, Northwest Territories; (2) reconstituted Ottawa sand samples containing methane gas hydrate formed in the laboratory; and (3) ice-bearing sands. These measurements show that hydrate increases shear...
Authors
W.J. Winters, I.A. Pecher, W.F. Waite, D.H. Mason
By
Woods Hole Coastal and Marine Science Center
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