Stabilization of Dunes with Flexible Mattresses
Dunes, constantly moving due to influences of sea and wind, are inherently unstable and in many, if not most situations, are best left in their natural state of change. Where there is...
Some Econological Observations on Coastal Plant Communities, of New York and New Jersey
The present study was conducted at three coastal sites, Fire Island, New York, Fort Tilden, New York, and Sandy Hook, New Jersey. Four plant communities, the salt marsh community, sand...
Man-Made Offshore Islands: An Innovative Solution to Coastal Erosion
Existing shore-parallel detached breakwaters have resulted in the accretion of sand along the shoreline in the wave shadow of the structure. Significant prograding of the beach has replaced...
Managing Shoreline Changes in the Presence of Nearshore Shoal Migration and Attachment
The purpose of this paper is to describe these events in detail and illustrate the need for better understanding of erosion/deposition patterns around tidal inlets. Periodic beach surveys...
Marine Geological Studies on the Coastal Zone of Kerala
The largest of the estuaries in Kerala, the Vembanad lake formed by the backwater, has been investigated in detail with reference to bathymetry, sediments and geochemistry. A considerable...
Experimental Study on Sandbag Stability and Runup
Sandbag model tests are performed in a wave flume to examine the effects of berm-type slopes on the stability of sandbags and wave runup as compared to uniform slopes. Measurements of...
Improvement and Construction of Coastal Fishing Grounds in Japan
Development of coastal fishery has become one of the most important issue in the field of food supply. Basically, in order to promote coastal fishery, it is necessary to increase marine...
The Review of the Comprehensive Survey of the Coastal Zone of China
The purpose of the survey is to provide basic data for coastal zone development of China. The scope of survey is a long narrow belt area alongshore. The contents of the survey include...
Modern and Historic Mapping of Tidal Marshlands of San Francisco Bay, California
In this work, studies were made of two marshland sites shown on the old maps that presently remain subject to tidal action. For each site, historic maps dating from the 1850's were accurately...
Geologic Review: A Successful Procedure for the Minimization of the Impact of Oil and Gas Exploration and Production on Louisiana Wetlands
An effective procedure to minimize the amount of wetlands impacted by oil and gas well access routes has been developed. The procedure consists of a stringent geologic review of every...
Federal Policies in Water Resources Planning
The adequacy of current federal policies and institutional arrangements for water resources planning is assessed. Conclusions and recommendations are presented in five key areas: (1) Water...
Watershed Management in the Eighties
The papers included in this publication discuss state-of-the-art methods and current research on management and present case studies on current projects and practices on applied watershed...
Engineering Surveying Manual
This manual is directed at the engineering manager who is responsible for planning and executing engineering projects which require the assistance of specialists in engineering surveying....
Measurement and Use of Shear Wave Velocity for Evaluating Dynamic Soil Properties
Geotechnical engineers have recognized in the past decade that shear wave velocity is a basic soil property and have begun to use it to characterize sites for many uses. Most notable has...
Hydraulic Fill Dam Made Earthquake Resistant
San Pablo Dam, near the San Andreas fault, constructed in 1919-21 by hydraulic fill methods, was found to be susceptible in places to liquefaction under seismic loading. The dam has been...
Bridging Twin Ports
The Major Richard I. Bong Memorial Bridge, part of U. S. Highway 2, connects harbors at Duluth, Minn. and Superior, Wisc. The new highway link was designed to relieve congestion on nearby...
Effect of Shallow Trench Construction on Cast Iron Pipelines
This paper summarizes the results of three-dimensional finite element analyses to evaluate the strains and displacements sustained by 4, 6, and 8-in. (100, 150, and 200 mm)-diameter cast...
Influence of Depth-of-Cover on Pipe-Soil Interaction
A major research effort was undertaken to study the structural behavior of a natural gas pipeline under several critical service conditions. The program included a field test site near...
An Instrumented Soil-Pipe System: Automated Data Acquisition and Management
A 16-in. natural gas pipeline near Racine, Wisconsin, had been in service for some 30 years. In 1982 road widening operations on a line parallel with the pipe resulted in a heavily trafficked...
Clay Pipe Installation?Advances in Load Factors
This report presents an evaluation of traditional load factor values for clay pipe and the development of a new bedding system which gives a higher load factor. Tests demonstrate that...
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