Managing Nitrates, Salinas Valley, California

Root Zone Salinity Control—Leaching Fraction, Spatial Variability
This paper gives an overview of three chapters that are contained in a new ASCE manual called Agricultural Salinity Assessment and Management Manual. Chapter 9 is entitled Field Sampling...

Hydrological Changes in Charleston Harbor, South Carolina

The Effects of Freshwater Canal Discharges on Salinities in Biscayne National Park

Prediction of Salinity Intrusion in Lower Meghna

Rule-Based Models at the Interface Between Engineering and Ecology

Benefits and Risks of Artificial Recharge of Saline Aquifers
Artificial recharge of saline aquifers by deep well injection of treated effluents is attractive, as it provides a solution to an environmental problem, and possibly creates groundwater...

Salinity Intrusion Predictions by Analytical Expressions
Salinity intrusion in estuaries has traditionally been predicted by use of physical models and more recently by numerical models. Analytic techniques have seen quite limited use because...

Longitudinal Dispersion in Partially-Mixed Estuaries
The longitudinal dispersion in partially-mixed estuaries was formulated to consist of two terms. The first term accounts for the dispersion due to the vertical and transverse shear of...

Optimum Irrigation Under Saline Conditions
A dynamic production function for cotton is estimated. Optimal irrigation volumes, timing, and qualities are calculated using dynamic programming. Optimal water quantities are sensitive...

Salinity Intrusion in Louisiana Coastal Canals
Field data of the salinity intrusion in three Louisiana coastal canals were presented. In these canals, the mixing state can be categorized as, in general, well mixing at the Gulf side...

Molluscan Communities of Laguna Madre, Texas: Man's Impact
The purpose of this study is to test the hypothesis that due to human intervention the two parts of the Laguna Madre now differ in molluscan species composition and the most heavily-impacted...

Development of a Self-Heating Thermal Probe for Saline Permafrost
Geothermal modelling and prototype testing are described to support the development of a self-heating thermal probe. This has application for in-situ determination of the amount of unfrozen...

Recovery of Freshwater Stored in Saline Aquifers in Peninsular Florida
Subsurface freshwater storage has been operationally tested at seven sites in central and south Florida. Injection was into a high chloride water aquifer at six sites, and into a high...

Strength and Deformation Behavior of Frozen Saline Sand and Gravel
Construction of offshore oil and gas exploration and production structures often considers the use of either sand or gravel fill materials. Fill soils exposed to the environment will progressively...

The Suwannee River Estuary: Cohesive Sedimentation
Cohesive sediment dynamics as effected by salinity intrusion are described for the Suwannee River Estuary, a large estuary flowing over the very shallow limestone shelf of Florida's...

Research Challenges in Frozen Ground Pile Design
A fairly recent pile design analysis is reviewed. The influence of such factors as temperature, salinity, loading, etc. on frozen ground pile design is pointed out. Since many facets of...

Drain Maintenance in the Imperial Valley
Imperial Valley, located in the southeast corner of California is one of the most intensely irrigated areas in the world. Since Colorado River salinity is currently about 800 mg/l (1....

Desalination of an Impounded Estuary
The Sungei Seletar, an arm of a saline tidal estuary surrounding the Island Republic of Singapore, has been dammed for conversion to a freshwater reservoir. Calculations for predicting...

Shear Strength in the Zone of Freezing in Saline Soils
The design of artificial islands and other geotechnical structures to support arctic offshore petroleum resource development requires considerable knowledge of the strength of frozen saline...

 

 

 

 

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