A Generalized Three Invariants Cap Model and its Numerical Implementation to Study Soil-Foundation Interaction
This paper presents a modified cap model that is capable of characterizing cyclic stress-strain behavior of soils and describing variation of shear strength along various stress paths...
Deriving Alternative Structural Modifications Based on Qualitative Interpretation at the Conceptual Design Stage
Current computer tools provide little support in deriving alternative modifications based on qualitative structural interpretation of a conceptual design. This paper presents a behavior-based...
Reliability Assessment of Concrete Pavement Sawing
Traditional concrete pavement design sometimes realize on qualitative decision based on experience, with concrete pavement sawing operations representing a specific case in point. presently,...
Results from Minerals Management Service Funded Oil Spill Response Research 1991-1993
Large oil spills from tankers have reaffirmed the need for continuing technology assessment and research to improve oil spill response capabilities. This paper discusses Minerals Management...
NOAA, Bioassessment Techniques and the Superfund Process
The National Oceanic and Atmospheric Administration's (NOAA) assessments of SUperfund sites require an evaluation of whether contaminants are present in an aquatic environment of concern,...
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...
Submergence, Salt-Water Intrusion, and Managed Gulf Coast Marshes
Many coastal marshes are managed to improve wildlife habitat. Simultaneous salt-water intrusion and rapid submergence in Louisiana place additional demands on marsh managers and may become...
Coordinating Toxic Cleanup with Future Site Utilization
The Port of Olympia owns a site where former industrial activity left a legacy of toxic contamination, and which is currently involved in a cleanup action. A waterfront site which was...
Selection of Superior Planting Stocks and Development of Regeneration Techniques for Coastal Restoration: A Pilot Study
There is an increasing demand in the U.S. for wetland plants to be used for marsh restoration and coastal stability projects. However, physiologically adapted wetland plants suitable for...
Bioaccumulation in Mussels Caged in Alamitos Bay, CA
Alamitos Bay is a coastal embayment located in the southern portion of the highly urbanized Los Angeles basin. There is concern of the potential for contamination stemming from urban non-point...
A Man-Machine Partnership for Map Production: An Application of Image Classification and Auto-Vectorization in Charting Coastlines
The semi-automatic production of coastal area maps through computer processed digital images is described. Two sources of digital imagery were addressed: satellite and aircraft mounted...
Slides and Slumps on the Coastal Zone Between San Miguel and El Descanso, Baja California, Mexico
The coastline between Tijuana and Ensenada is being subject to intensive development, mainly as resort property, and because of the roughness of the adjacent areas inland, the coastal...
Aquatic Disposal of Dredged Material in the Belgian Part of the North Sea
Extensive research and study on the behaviour of dredged material after dumping in the sea has been conducted on the disposal grounds S1 S2 and Zb Oost located in the southern Bight of...
Utilization of the Coastal Areas for Aquaculture in Nigeria
The current domestic fish production in Nigeria is estimated to be 363,706 tonnes whereas the projected demand is 1,237,000 tonnes. This leaves a deficit in demand of 874,294 tonnes which...
The Saint Lawrence River System, Atlantic Coast of Qu?bec
At the 1:250,000 scale, Quebec has 13 773 km of coasts, 6 772 km of which belong solely to the Saint Lawrence River System. This system can be divided into six portions: river, limnetic...
Scaling Laws of Gravity Driven Fingering During Organic Liquid Infiltration
Wetting front instability can occur during vertical infiltration of a liquid into porous media, particularly when a fine soil layer is overlying a coarse layer. The result of this instability...
Infiltration in Two Sand Dune Areas in Saudi Arabia
Field infiltration experiments at several locations in two sand dune areas in Saudi Arabia were conducted. Results of these field tests are compared with predictions of the Green and Ampt...
The Use of Residence Time to Describe a Hillslope
Queueing theory has been applied to the determination of Soil Water Residence Time (SWRT) using an 18 year data set. The calculated SWRTs agree qualitatively with the lags exhibited by...
National Weather Service Operational River Forecasting in a UNIX Environment
The mission of the National Weather Service (NWS) includes providing river and flood forecasts and warnings for protection of life and property, and providing basic hydrologic forecast...
Sacramento Drainage Manual?Hydrologic Procedures
For a period of over two years, HDR Engineering, Inc. (HDR) and HYDMET have been working with the City and County of Sacramento to develop a Drainage Manual. This Manual contains seven...
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