Status of Contamination in the Coastal United States as Revealed from NS&T Analyses of Surface Sediments
Sediment samples have been collected from more than 300 sites along the coasts of the U.S. since 1984 as part of NOAA's National Status and Trends (NS&T) Program. These samples...
The NS&T Intensive Bioeffects Surveys: Design Strategies and Preliminary Results
Intensive bioeffects surveys are conducted in selected areas where chemical data from the National Status and Trends (NS&T) Program indicate greatest potential for contaminant-related...
Argentine Deltas Morphology
Only two deltas are located along the Argentine coast, both of them at Buenos Aires state. The northern one is the Parana Delta at the Rio de La Plata estuary (34.99' Lat. Sur) and the...
Production and Decomposition of
Production and decomposition rates were calculated for Spartina patens in a mesohaline coastal marsh in Louisiana. Production was estimated to be 800 g m-2 ur-1 during 1991 and 1,696 g...
Crevasses on the Lower Course of the Mississippi River
Before construction of artificial levees, crevasses were a common event along the Mississippi River. They directed sediment out of the main channel and reduced flood stage down river....
Performance of Three Adjacent but Different Beach Nourishment Projects, Pinellas County, Florida
More than 25 million dollars have been spent on three adjacent nourishment projects extending along 10 miles (16 km) of central Pinellas Country on the Gulf Coat of Florida. The three...
Holocene Sedimentation and Coastal Wetlands Response to Rising Sea Level at the Aucilla River Mouth, a Low Energy Coast in the Big Bend Area of Florida
The shallow dip of the Florida carbonate platform results in low wave energy on Florida Big Bend coasts. Therefore sedimentation is dominated by river-and tidal-hydrodynamics near the...
Recovery of Shoreline Ecosystems Following the
High-pressure, hot-water washing was evaluated as one of several countermeasures for cleaning oiled shorelines. This was the primary treatment method for nearly all treated shorelines...
Predicting Impacts of Management Measures on Fragile Coastal Wetlands Using a Predictive Landscape Model
We present a marsh development model that incorporates the hydrodynamics of erosion and sedimentation and meets all conventions proposed for spatial landscape modeling. Wave parameters...
Coastal America: Northeast Coastal Strategy
The Northeast Regional Implementation Team of the national Coastal America effort has focused its efforts on the restoration of constricted tidal marsh systems. The disposal of dredged...
Managing Beach Erosion in Fortaleza, Brazil
The littoral of the metropolitan region of Fortaleza City, State of Ceara in the Northeastern part of Brazil, has suffered significant morphological changes during this century. There...
The Source of Sediments in the Neuse River Estuary: Water Quality Management Implications
Pedological evidence in alluvial floodplains of the fluvial-estuarine transition zone of the Neuse River, North Carolina, shows that very little sediment from the Piedmont headwaters of...
Heavy Metal Accumulation in Subsurface, Estuarine Sediments and Inferences for Anthropogenic Enrichment: N.W. Florida Coast
In an attempt to quantify the degree of contamination and the thickness of the contaminated subsurface sedimentary wedge, approximately 100 samples were extracted from the cores and subjected...
Sedimentation Patterns of a Restored Tidal Wetland
Coyote Slough Lagoon was flooded as part of a local mitigation project in 1986. The design of the restored marsh included peninsulas to break up the local fetch and resulted in the development...
Geological Characterization of Selected Offshore Sand Resources on the OCS, Offshore Alabama, for Beach Nourishment
Most Alabama Gulf and estuarine shoreline is undergoing long-term erosion; threatened shorelines will need programs of replenishment and maintenance if they are to be even temporarily...
Subsidence Properties of Holocene Sediments: S. La.
As part of a comprehensive USGS-sponsored study of processes that drive subsidence and wetland loss in south Louisiana, two continuously cored deep borings (60 m and 72 m) were acquired...
Historical Shoreline Position Change for the Mainland Beach in Harrison County, Mississippi
Historical shoreline position change (1851/52 to 1986) associated with the mainland beach in Harrison County, Mississippi, are controlled by engineering activities associated with beach...
A Guide for Controlling Agricultural Nonpoint Source Sediment Loads: Where to Treat?
The authors present a simplified guide to decide where to expend money and efforts to reduce sediment loads that cause water quality problems. This guide is intended for resource managers...
Measuring the Effect of Sediment Fences for Wetland Creation and Restoration in Louisiana
A sediment erosion table (SET) method has been developed to monitor changes over time in intertidal mudflat or pond elevations with an accuracy in the 1.5 mm range. The SET permitted rapid...
Environmental Impacts of Small Boat Navigation: Vessel/Sediment Interactions and Management Implications
It is the intent of this review and discussions to provide state-of-the-art information on one aspect of the issue of environmental impacts associated with small boat navigation, that...
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