Testing a Multi-Tiered Stress-Gradient Model for Risk Assessment Using Sediment Constituents from Coral Reef Environments
Coral reefs are threatened worldwide by stresses ranging from local to global in extent. Local stresses range from boat/ship groundings and sewage outfalls to dredging and coastal clearing....
Calibration of Water-Velocity Meters
The U.S. Geological Survey (USGS), as part of its responsibility to appraise the quantity of water resources in the United States, maintains facilities for the calibration of water-velocity...
The Determination of Velocity Spectra and Dissipation by Direct and Indirect Means using Second-Order Accurate PIV
In this paper we present a 2 nd order accurate technique in space (following Wereley & Meinhart's (2001) extension of Cowen & Monismith's (1997) dynamic sub-window PIV...
National Water Quality Assessment: Moving from Measurement to Understanding
The USGS National Water Quality Assessment (NAWQA) program began in 1991. The objectives of the program were to characterize the quality of the Nations ground and surface water, assess...
Exploring All Options
To relieve environmental stress around the Tampa Bay area's existing groundwater wells, Tampa Bay Water�the regional water supplier�is implementing a Master Water Plan that...
Coming to the Surface
In the past few years, the coastal areas of the Gulf of Mexico and much of Texas have experienced less than normal rainfall and record water demands. During this period, average daily...
Beach Changes Triggered by Seaward Development of Towns, Expansion of Coastal Forest and Construction of Detached Breakwaters at a Pocket Beach
Beach changes triggered by seaward development of towns, expansion of coastal forests and construction of detached breakwaters at a pocket beach were analyzed, taking the Ariake-Ishihama...
Monitoring and Performance Analysis of Protection Works at Rosslare Strand
Post construction monitoring and performance analysis has become an important part of many major coastal protection projects. In the past such work was carried out very much on an ad-hoc...
Low Cost Sand Re-Nourishment to Combat Chronic Beach Erosion: Long Beach, California
The City of Long Beach has analyzed and attempted numerous methods of beach erosion control and mitigation along Peninsula Beach. With the exception of beach nourishment, nothing has proven...
The Sharon Escarpment, Israel: Management of a Backshore Cliff in a Densely Populated Environment
The Sharon Escarpment is a coastal backshore escarpment made of heterogeneous layered sandstone. This area is an increasingly exploited environmental resource. This paper defines the main...
Towers in Motion (available in Structural Engineering Special Section only)
Undersea towers are typically designed to rigidly resist the forces of water and wind. But one type of tower is designed to be flexible and, rather than rely on its platform strength to...
Surface Irrigation
Surface irrigation refers to a large group of irrigation methods in which water is distributed by gravity over the surface of the field. Water is typically introduced at the high point...
Over the Top Concrete
The 60-year-old Tongue River Dam in southeastern Montana is undergoing extensive dam safety and reservoir enlargement modifications. Major features of the project include a 60,000 cfs...
A Statistical Approach to Modeling Groundwater Hydrology in a Constructed Wetland on the Atlantic Coastal Plain, Delaware
The design of wetlands based on groundwater as the principal source of hydrology pose uncertainties in areas where erratic seasonal groundwater fluctuations exist. Under these conditions,...
Ocean Wave Kinematics, Dynamics and Loads on Structures
An international symposium on
Coastal Dynamics '97
This proceedings,
Ocean Wave Measurement and Analysis
This proceedings,
Inspecting the Unknown (Available in Geo-Environmental Special Issue Only)
Unknown foundations have plagued civil engineers for years. In the case of underwater pilings, much time and money is spent inspecting for cracks, breaks or deterioration. Even then, visibility...
Evaluation Findings of Bondade CU-31 Bonding Solution
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. The report describes a HITEC evaluation of Bondade...
Dam Engineers Go Over the Top
In the 1980s, dam engineers with the Lower Colorado River Authority worried that the Wirtz Dam, near Austin, Texas, would fail in the event of a maximum probable flood. They looked to...
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