WorldCat Identities

Coastal and Hydraulics Laboratory (U.S. Army Engineer Waterways Experiment Station)

Works: 273 works in 442 publications in 1 language and 3,513 library holdings
Genres: Technical reports  Academic theses 
Classifications: TA7, 627
Publication Timeline
Most widely held works by Coastal and Hydraulics Laboratory (U.S. Army Engineer Waterways Experiment Station)
Model study of Marmet Lock filling and emptying system, Kanawha River, West Virginia : hydraulic model investigation by John E Hite( Book )

4 editions published in 1999 in English and held by 127 WorldCat member libraries worldwide

Periodic inspections of Kahului and Laupahoehoe breakwaters, Hawaii : armor unit monitoring for period 1992/93-2001 by Robert R Bottin( Book )

2 editions published in 2002 in English and held by 116 WorldCat member libraries worldwide

Selected coastal navigation structures are periodically monitored under the "Periodic Inspections" Work Unit of the monitoring Completed Navigation Projects Program. Such monitoring is done to gain an understanding of the long-term structural response of unique structures to their environment. Periodic data sets are used to improve knowledge in design, construction, and maintenance of both existing and propose coastal navigation projects. The Kahului Harbor breakwaters and the Laupahoehoe boat-launching facility breakwater, HI, were nominated for periodic monitoring by the U.S. Army Engineer District, Honolulu. The positions of the above-water, concrete armor units (tetrapods, tribars, and/or dolosse photogrammetric analysis. The structures were revisited in 2001 to determine changes that had occurred. Results indicated that some armor units had moved along the seaward quadrant of the head of the Kahului east breakwater. These units were intact, however, and are still functional. Armor unit movements on the Kahului west breakwater and the Laupahoehoe breakwater were minimal. A detailed inventory of broken armor units on these structures was obtained. The sites will be revisited in the future and the long-term structural response of the structures to their environment will continued to be tracked. These data sets will facilitate engineering decisions concerning whether or not closed surveillance and/or repair of the breakwaters might be required to reduce their chances of failing catastrophically. The periodic inspection methods developed and validated for the Hawaii breakwaters may also be used to gain insight into other Corps structures
Navigation conditions in lower lock approach of Ice Harbor Lock and Dam, Snake River, Washington by Howard Park( Book )

2 editions published in 2002 in English and held by 112 WorldCat member libraries worldwide

Possible construction of facilities to improve passage of juvenile and adult migratory fish at Ice Harbor Lock and Dam on the Snake River, Washington, caused concern over the impacts to navigation especially in the lower lock approach. A 1:55-scale physical model of the project was used to help identify these impacts. Navigation conditions in the lower lock approach were determined for various discharges and barge configurations of rock dikes placed in the lower lock approach. The study revealed that the installation flow deflectors at Ice Harbor Dam caused adverse impacts to navigation in the lower lock approach. An intense eddy formed near the downstream guard wall, and the angle magnitude of the crosscurrent in the lower lock approach were larger than those with the no-deflector conditions. Several alternatives included the placement of four, 40-ft-diam circular cells, 120-ft on center, located downstream, parallel, and riverward of the lower guard wall
Salinity changes in Pontchartrain Basin Estuary, Louisiana, resulting from Mississippi River-Gulf outlet partial closure plans with width reduction( Book )

1 edition published in 2002 in English and held by 107 WorldCat member libraries worldwide

The Mississippi River-Gulf Outlet (MRGO) consists of a ship channel 36 ft deep and 500 ft wide, extending approximately 76 miles from the juncture of the Inner Harbor Navigation Channel and the Gulf Intracoastal Waterway in New Orleans, LA, to the -38 mlw (mean low water) -ft contour in the Gulf of Mexico, The purpose of the MRGO is to provide a deep-draft channel to the Port of New Orleans Inner Harbor Facilities. Since the MRGO's completion in January 1968, saltwater flux from the MRGO through direct connections to Lake Borgne and the Gulf Intracoastal Waterway has contributed to an increase in the salinity concentration of the lakes and Biloxi Marshes. This report presents the results of a numerical mode investigation used to predict average salinity changes that will occur in the Lake Pontchartrain Basin as a result of varying levels of depth and width closure of the MRGO below Lake Borgne. This report follows a previous study, ERDC/CHL TR-01-14, that modeled depth closure alone, which produced very low changes in salinity
Joint wind wave height-frequency-direction statistics at two disparate sites : final report by Charles E Long( Book )

4 editions published in 1998 in English and held by 84 WorldCat member libraries worldwide

Joint probability functions associating wind wave characteristics height, spectral peak frequency, and mean wave direction at the peak frequency are estimated based on observations at two sites with distinctively different wave climates. One of the data sources is a directional wave gauge in approximately 8-m water depth 900 m offshore of the U.S. Army Engineer Waterways Experiment Station Coastal and Hydraulics Laboratory Field Research Facility on the northern Outer Banks of North Carolin & The other data source is a directional wave gauge mounted on the Texaco Oil Company production facility known as Harvest Platform located in about 200 m of water approximately 20 km west of Point Conception, California The objective is to provide a simple three-parameter statistical characterization of these two sites so that meaningful combinations of these parameters can be used with conventional coastal engineering analysis tools. In addition to three-parameter joint statistics, marginal distributions with wave height-frequency, and joint height-direction are also presented
Results of monitoring study of Agat Harbor, Guam by David D Mcgehee( Book )

3 editions published in 1997 in English and held by 74 WorldCat member libraries worldwide

Agat Harbor, Guam, was selected for monitoring under the Monitoring of Coastal Projects Program, which is sponsored by Headquarters, U.S. Army Corps of Engineers. During a 3-year observation period, the following data were collected: a. Directional energy spectra and surface winds from an offshore site. b. Energy spectra at several locations on a shore-normal transect across the reef flat. c. Wave conditions and water elevations at the structure and harbor response during large wave events. d. Directional energy spectra at the outer boundary of the model and at several sites within the harbor. e. Energy spectra at the outer and inner ends of the channel. f Periodic site inspections and aerial photographs of the harbor and surroundings. Most of the quantitative objectives of the study were not met because of the lack of measured data during high-energy events. However, observations have resulted in valuable qualitative information that should be considered when planning or designing projects in a similar environment
Los Angeles and Long Beach harbors model enhancement program : prototype wave data summary : final report by James Rosati( Book )

4 editions published in 1998 in English and held by 70 WorldCat member libraries worldwide

This report presents data products from the analysis of seven different wave gauges in Los Angeles and Long Beach Harbors and a directional wave gauge at a nearby offshore site (Platform Edith). These data products were chosen in an effort to summarize all wave data collected during the Harbors Model Enhancements (HME) Program. Data acquisition methods and equipment are documented in this report, along with analysis methods. The emphasis of this report is on summarizing and documenting the available prototype wave data in fulfillment of the wave data collection and analysis tasks of the HME. Between February 1984 and February 1988 wave data were sampled every 2 hr at 1 Hz for 2,048 sec in the harbors. From February 1988 to August 1991, data were collected continuously in the harbors at an average sample rate of 0.25 Hz. Directional wave data were measured offshore at Platform Edith via a PUV gauge between February 1985 and August 1991. Data for this period were collected at 1 Hz for 2,048 sec every hour but reported every 4 hrs. Waves were measured in seven locations in the harbors with highly accurate single-point pressure sensors. Directional wave measurements show that during the winter months most of the waves come from the west, but during the summer, the majority of the waves come from the south (although a significant number still come from the west) and average peak in wind wave energy during the months of September and October. However, low-frequency waves that affect ship motion are present throughout the year
CORE-LOC concrete armor units : final report by Jeffrey A Melby( Book )

4 editions published in 1997 in English and held by 69 WorldCat member libraries worldwide

A new series of coastal rubble structure concrete armor units called CORE-LOC has been developed at the Coastal Engineering Research Center, U.S. Army Engineer Waterways Experiment Station. CORE-LOC units have been designed for random placement in a single layer on steep or shallow slopes. CORE-LOC shapes have been optimized to maximize hydraulic stability, unreinforced strength, and reserve stability, but minimize on slope volume and casting yard space. CORE-LOC is designed to interlock well with dolosse so that it can be used as a repair unit. While several different CORE-LOC shapes have been developed, this report discusses preliminary hydraulic stability tests of the middle aspect ratio. Finite element studies of CORE-LOC showed maximum flexural tensile stresses to be 47 percent, 74 percent, and 33 percent those of dolosse, accropode, and tribar, respectively. Torsional stresses were 54 percent, 74 percent, and 38 percent those of dolosse, accropode, and tribar, respectively. Initial two-dimensional hydraulic stability tests of the CORE-LOC shape indicate that the unit is one of the most stable randomly placed armor units ever tested, withstanding breaking wave heights 5 to 7 times the maximum dimension of the unit on slopes of 3V:4H and 1V:1.5H
Reliability assessment of breakwaters by Jeffrey A Melby( Book )

2 editions published in 1997 in English and held by 69 WorldCat member libraries worldwide

In this report, several level II reliability techniques are discussed and applied to breakwater design. Using these methods, the reliability and reliability index are determined for the dominant performance functions of a breakwater including stone and concrete armor stability, concrete armor structural response, runup, and overflopping. The methods include Taylor series finite difference (TSFD) methods, which are shown to be easily computed using a handheld calculator or spreadsheet. The TSFD method is shown to yield reasonable accuracy for preliminary comparison of various alternatives. An invariant iterative TSFD method and associated FORTRAN program are shown, which provide an improved approximation to the reliability for design and evaluation purposes
Damage prog[r]ession on rubble-mound breakwaters by Jeffrey A Melby( )

3 editions published in 1999 in English and held by 67 WorldCat member libraries worldwide

This report addresses depth-limited breaking-wave damage on rubble-mound breakwaters. Few generalized studies have been conducted on this topic; so no engineering methods exist for determining deterioration rates of breakwaters exposed to sequences of storms. A new experiment is discussed measuring incipient motion on both stone and sphere armor layers. An incipient motion criterion is derived for the dominant mode of motion: vertical lift under the steep breaking-wave face. Previous breakwater damage experiments and measurement techniques are thoroughly reviewed. A new experiment is described consisting of seven relatively long-duration breakwater damage test series. The test series were conducted in a flume using irregular waves. Wave height, wave period, water depth, storm duration, storm sequencing, and stone gradation were varied systematically. The experiment yielded relationships for both temporal and spatial damage development Maximum eroded depth, maximum eroded length, and minimum remaining cover depth are introduced to describe the damaged profile. The mean and standard deviation of these profile parameters are shown to be a function of mean eroded area. An equation is also provided to predict the standard deviation of eroded area as a function of mean damage. Relations for predicting temporal variations of mean eroded area with wave height and period varying with time in steps are shown to describe damage reasonably well
Coastal processes assessment for Brevard County, Florida, with special reference to test plaintiffs by Nicholas C Kraus( )

3 editions published in 1999 in English and held by 65 WorldCat member libraries worldwide

This report was prepared as an independent assessment of the coastal physical processes occurring along Brevard County, Florida. The study was conducted for the U.S. Department of Justice, Environment and Natural Resources Division, in its involvement with the lawsuit Applegate et al. versus the United States of America. Long-term regional beach change is evaluated by analysis of survey data on shoreline position, bathymetry, and beach profiles taken through time. In addition, analysis is specifically made for the properties of two test plaintiffs selected by the Court. Estimates of beach and dune erosion, if any, are calculated for the two test plaintiffs from date of purchase of the properties. Erosion of the beaches and dunes, principally attributed to storms, was estimated at the properties of the two test plaintiffs by compiling storm data and calculating beach and dune change with a numerical model
Burns Harbor, Indiana, monitoring study : final report by David D Mcgehee( Book )

7 editions published in 1997 in English and held by 63 WorldCat member libraries worldwide

Directional irregular wave kinematics by Christopher H Barker( )

3 editions published in 1998 in English and held by 62 WorldCat member libraries worldwide

Coastal and ocean processes are heavily influenced by the kinematics of waves. In order to understand these processes, researchers place a variety of instruments in the sea in an attempt to measure the waves. These instruments all measure a small set of physical quantities at a small number of locations. The balance of the kinematics must be predicted through analysis of the measured records. Most of the currently used methods of analysis rely on the superposition of linear waves to recreate complex seas. These methods are compromised by linearizing approximations to the free surface boundary conditions. Fidelity in the interpretation of wave measurements is enhanced by insisting that the analysis satisfies the full nonlinear free surface boundary conditions. The Local Fourier method for irregular wave kinematics is introduced and expanded to include the interpretation of records from arrays of instruments. It is a local method, in that a separate solution is sought that fits the measured record(s) in a small local window in time, rather than attempting to find a single solution for a large segment of the record. Each window solution satisfies the full set of governing equations for gravity waves, including the nonlinear free surface boundary conditions. The solution in each window is a potential function whose form is based upon a Stokes style expansion for intersecting waves. The parameters of the potential function are found by a nonlinear optimization that seeks the solution that matches the measured record and satisfies the full free surface boundary conditions
Periodic inspection of jetties at Manasquan Inlet, New Jersey : armor unit monitoring for period 1994-1998 by Robert R Bottin( )

3 editions published in 1999 in English and held by 60 WorldCat member libraries worldwide

Under the Periodic Inspections work unit of the monitoring Completed Navigation Projects Program, precise locations of dolos armor units on the Manasquan Inlet, New Jersey, jetty heads were reestablished and compared with data obtained previously. The vertical and horizontal positions of the dolosse were defined through limited ground surveys, low-altitude aerial photography, and photogrammetric analysis. Areas at the seaward heads of the structures were recently rehabilitated with CORE-LOC armor units. Base data were obtained relative to the precise vertical and horizontal positions of the CORE-LOCs. A broken armor unit survey also was completed. The site will be revisited periodically in the future, and the long-term response of the breakwater to its environment will be tracked. These periodic data sets will be used to improve knowledge in the design, construction, and maintenance of the existing structure as well as future coastal projects
Inspections of previously monitored coastal structures by Robert R Bottin( )

3 editions published in 1999 in English and held by 60 WorldCat member libraries worldwide

This report presents results of inspections of coastal structures monitored previously under the Monitoring Completed Navigation Projects (MCNP) Program. Expedient, low-cost inspections consisting of walking inspections and/or boat surveys were performed at 14 sites. Positions of breakwater and jetty armor units were compared with their positions in previous aerial photography and photogrammetric surveys. Settlement of portions of the structures as well as voids in their armor also were noted, and photographs of the structures were obtained. Summaries of the inspection results as well as recommendations are presented in this report. The work was conducted under the "Periodic Inspections" work unit of the MCNP program
Mouth of the Colorado River, Texas, Monitoring Program by David B King( )

2 editions published in 1998 in English and held by 60 WorldCat member libraries worldwide

This report provides an overview of the monitoring effort of the U.S. Army Corps of Engineers at the mouth of the Colorado River, Texas. The report includes background information and objectives of the study, which were as follows: (a) Evaluate the design and efficiency of the weir jetty and adjacent impoundment basin so that project maintenance requirements and costs can be more accurately established. (b) Develop and improve equations for computing long shore sediment transport in the vicinity of the Colorado River, Texas. (c) Determine which sediment transport equations work best in the surf zone. (d) Collect data to aid in efforts to improve future designs of similar Corps projects. The report also includes data collection plans and procedures, data analysis, an evaluation of the project, and conclusions and recommendations. The data collection effort was divided into three main components: deployment of offshore directional wave sensors to obtain long-term, continuous wave, current, and water level information; intense, short-term field experiments that principally collected sediment transport data in the surge zone; and bathymetry surveys of the adjacent shorelines
Effectiveness of beach nourishment on cohesive shores, St. Joseph, Lake Michigan by Robert Bruce Nairn( )

3 editions published in 1997 in English and held by 60 WorldCat member libraries worldwide

This report describes a study of the effectiveness of beach nourishment along the cohesive shore of St. Joseph Harbor on Lake Michigan. Objectives of the study were as follows: To improve understanding of the sediment transport processes for both fine-grain and coarse-grain sand components at this site. To improve understanding of the relationship between movement of the cohesionless sediment (both fine and coarse-grain components) and the irreversible downcutting of the underlying glacial till (cohesive sediment) at this site. To apply the improved understanding of the sediment transport and erosion processes in developing recommendations for beach nourishment at the St. Joseph site. To formulate general principles for beach nourishment of cohesive shore sites that suffer from a sediment supply deficit due to the presence of an uplift littoral barrier. Data in the form of repeated beach profiles, lake bed bathymetry, and shoreline recession rates are summarized. The results of a series of analyses performed to develop an understanding of the evolution of the shoreline and lake bed in the vicinity of St Joseph, and the influence of the beach nourishment program on this evolution, are presented. A descriptive model of the historic coastal morphodynamics in the vicinity of St. Joseph is developed and presented, and this descriptive model is used to project the future evolution of coastal morphology. recommendations for future nourishment efforts at St Joseph are made on the basis of establishing realistic goals for the program
Monmouth Beach, New Jersey : beach-fill "hot spot" erosion evaluation by S. Jarrell Smith( )

4 editions published in 1999 in English and held by 59 WorldCat member libraries worldwide

Infragravity waves in the nearshore zone by Kent K Hathaway( )

2 editions published in 1998 in English and held by 59 WorldCat member libraries worldwide

This report summarizes the present state of knowledge on infragravity wave motions (nominally 0.003 to 0.05 Hz). Theoretical and observational studies are presented. Most of the studies discussed herein have been published elsewhere, however a few studies discussed in chapter 4 are presented for the first time in this report Measurements of nearshore waves and currents have shown that a significant amount of the total energy can be contained in the infragravity band, and on highly dissipative beaches the infragravity wave variance often dominates over energy in the incident wave band(0.05 to 0.3 Hz). An 8-month data set of infragravity variance measured at 8-m-depth at the shoreline (runup) was compared with incident wave variance. Analysis of the 8-m-depth data showed that high mode edge waves account for about 50 percent of the total infragravity variance, and as high as 80 percent at times. Significant edge wave heights greater than 20 cm were observed at the 8-m depth. Infragravity wave variance was shown to have a higher correlation with swell variance (C = 0.95) than with sea variance (C = 0.61). This report was motivated, in part, by the need to determine the significance of infragravity waves on coastal erosion and structure damage and by the desire to improve coastal engineering solutions to problems associated with nearshore processes
Monitoring of harbor improvements at St. Paul Harbor, St. Paul Island, Alaska by Robert R Bottin( )

2 editions published in 1997 in English and held by 58 WorldCat member libraries worldwide

In 1992, St. Paul Harbor, Alaska, was approved for inclusion in the Monitoring Completed Navigation Projects Program. The objective of the monitoring plan for St. Paul Harbor was to determine if the harbor and its structures were performing (both functionally and structurally) as predicted by model studies used in the project design. Monitoring of the harbor was conducted during the period July 1993 through June 1996. Elements of the monitoring program included prototype wave gauging, wave hindcast study, wave runup, wave overtopping, bathymetric analysis, broken armor unit surveys, and photogrammetric analysis. Wave height data obtained inside the harbor appeared to validate a previous three-dimensional model study. A videotape analysis used to obtain wave runup data along the face of the St. Paul Harbor main breakwater was successful, except during periods of low visibility. Trends in wave hindcast data obtained outside the harbor correlated reasonably well with runup data in a qualitative sense. Absolute values of the hindcast significant wave heights, however, appeared to be substantially lower than the waves experienced in the prototype based on runup values measured, overtopping observed, and local forecasts. Although the St. Paul Harbor main breakwater is currently functioning in an acceptable manner and is in good condition structurally, armor stone continues to degrade. Continued deterioration is predicted due to freeze-thaw and wet-dry cycles as well as large waves and sea ice action. Photogrammetric analysis revealed most of the breakwater extension was below its design elevation
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Alternative Names

controlled identityCoastal and Hydraulics Laboratory (Engineer Research and Development Center (U.S.))

controlled identityCoastal Engineering Research Center (U.S.)

controlled identityHydraulics Laboratory (U.S.)


CHL (Coastal and Hydraulics Laboratory (U.S. Army Engineer Waterways Experiment Station))

U.S. Army Engineer Waterways Experiment Station. Coastal and Hydraulics Laboratory

Waterways Experiment Station Coastal and Hydraulics Laboratory

WES Coastal and Hydraulics Laboratory

English (61)