Texas Coastal Mitigation: A Planning Approach
The Texas General Land Office manages 3. 5 million acres of submerged state-owned land in the bays and Gulf of Mexico. In granting permits, the agency always attempts to prevent damage...

State-Federal Gorda Ridge Task Force as a Conflict Resolution Mechanism
In 1983 the Minerals Management Service of the U. S. Department of the Interior proposed leasing of a large submerged area off Oregon and California for polymetallic sulfide mining. The...

Common Priorities for Managing Marine Protected Areas: Results from an International Seminar
In 1986, representatives from 22 countries participated in the International Marine Protected Area Management Seminar. The Seminar provided an opportunity to identify and discuss major...

Scour Prevention at Bridge Piers
Laboratory experiments are described in which attempts are made to eliminate local scour at bridge piers using submerged vanes and pier collar. The submerged vanes direct bed load toward,...

Beach Preservation by Means of Offshore Submerged Mound of Dredged Materials
The beach - sediment - dispersion- offshore or alongshore under the effect of waves and wave induced currents, and inland by wind action may cause a net deficit in sediment budget which...

Submerged Operation of the Fixed-Cone Valve

Transient Loads on Offshore Platforms During a Subsea Well Blowout

Effect of Submerged Breakwaters on Random Waves

Submerged Vanes for Sediment Control in Rivers
A procedure is developed for a rational design of a system of submerged vanes for depth control in alluvial-river channels. The vanes are vertical, small-aspect ratio foils installed on...

Development of the Nauvoo Point Plant Beds
In Pool 19, Mississippi River, the accumulation of sediment has resulted in soft-substrate benthic communities or macrophyte beds. Three areas in the downstream 12 miles of the 46. 3 mile...

Vibrations of Submerged Solids in a Vibrating Container
Dynamic forces on a vibrating submerged solid cylinder in both closed and open-top rectangular containers are evaluated. The submerged cylinder is attached to the base of a dynamically-excited...

Analysis of Liquefaction Potential of Hydraulically Placed Subsea Berms
The use of hydraulically placed sand for the construction of artificial islands for hydrocarbon exploration in the Beaufort Sea has necessitated detailed geotechnical evaluations of their...

Deep-Water Platform Solutions for the Navarin Basin
The environmental conditions prevailing in the Navarin Basin may impose limitations on the type and shape of production, storage and loading structures. The magnitude of the wind and wave...

Preliminary Evaluation of Submerged Aquatic Macrophytes in a Pilot-Scale Aquatic Treatment System
A study was done to determine which species of submerged aquatic macrophytes (Elodea nuttallii, Myriophyllum heterophyllum, Ceratophyllum demersum) were suitable candidates for use in...

Hypsometry as a Tool for Calculating Coastal Submergence Rates
A contemporary rise in relative sea level is slowly submerging the outwash plain which lies behind Long Island's barrier beaches. While relative sea level change rates vary...

Vortices at Vertical Intakes
This paper presents the results of an experimental investigation designed to predict the formation of weak, free-surface vortices at vertical intakes with a headrace channel. A weak vortex...

A Numerical Model of Subsea Permafrost

Experience in Channel Maintenance in Upper Mississippi River

A Pseudo Response Spectrum Method for Mark I Loads
A pseudo base motion response spectrum method is developed to uniquely evaluate the periodic condensation oscillation and chugging drag loads that may occur on submerged structures within...

Avoiding Cavitation Damage to Hydraulic Structures
Cavitation damage often may be avoided by not allowing cavities to form. Where boundaries are not deeply submerged, their shape must be exactly correct, irregularities must be very small,...

 

 

 

 

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