WorldCat Identities

Coastal and Hydraulics Laboratory (U.S.)

Overview
Works: 1,823 works in 2,156 publications in 1 language and 2,886 library holdings
Genres: Handbooks and manuals  Academic theses 
Classifications: TA7,
Publication Timeline
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Most widely held works by Coastal and Hydraulics Laboratory (U.S.)
DMS : Diagnostic Modeling System by Nicholas C Kraus( )

3 editions published in 2000 in English and held by 46 WorldCat member libraries worldwide

Wave breaking on a current at an idealized inlet with an ebb shoal by Jane McKee Smith( )

2 editions published in 2001 in English and held by 32 WorldCat member libraries worldwide

In this report, wave breaking on a current is examined through physical-model measurements in an idealized inlet with a steady ebb current. Wave and current measurements will be used to evaluate wave dissipation models. The goal of the study is to provide the data to develop a dissipation function for wave breaking on a current that is based on integrated wave parameters, is applicable for arbitrary water depths, and is robust. The motivation for these laboratory experiments was to measure wave breaking in typical coastal inlet conditions. The measurements are being used to parameterize wave breaking for application in numerical wave transformation models, e.g., in the steady-state spectral wave model STWAVE. The data collected and analyzed for this study are an extension of the data set collected by Smith et al. (1998) in the same physical model facility. Smith et al. (1998) evaluated and developed dissipation algorithms using these data. It was found that whitecapping formulations, strongly dependent on wave steepness, generally under-predict dissipation. A relationship for dissipation as a function of wave height squared was developed which gave improved agreement between calculated and predicted dissipation compared to other work. The relationship also worked as well as others in modeling the wave height. The data presented in this report include a larger range of incident waves and ebb currents than the previous data set (Smith et al. 1998). These experiments also include an elliptical ebb shoal seaward of the inlet. The shoal induces depth-limited breaking (in addition to the current-induced breaking in the inlet), which is a typical feature of many coastal inlets. Also, an examination of effects of laboratory scaling was performed
Tidal inlet equilibrium area experiments, inlet laboratory investigations by William C Seabergh( )

2 editions published in 2001 in English and held by 28 WorldCat member libraries worldwide

This study was designed to examine the relationship among channel area, tidal period, tidal prism, and maximum channel velocity. Movable-bed model experiments were run to define an equilibrium area for different tidal periods and sediments. The magnitude of the areas measured provided additional data for the relationship of the tidal prism versus minimum channel area in a size range slightly larger than previous laboratory data in the continuum to very large field inlets. These data may help define the tidal prism-minimum channel cross-sectional area relationship in the midrange channel size
Half Moon Bay, Grays Harbor, Washington : movable-bed physical model study by Steven A Hughes( )

2 editions published in 2006 in English and held by 18 WorldCat member libraries worldwide

A 1-to-50 scale physical model of Half Moon Bay, Grays Harbor, WA, was constructed at the U.S. Army Engineer Research and Development Center's Coastal and Hydraulics Laboratory in Vicksburg, MS. The purpose of the physical model was to support studies being conducted by the U.S. Army Engineer District, Seattle. Specifically, the model results will be used to assess the potential long-term response of the Half Moon Bay shoreline to expected storm waves and surge levels, provided the breach fill between South Beach and the bay remains intact. The physical model eroded the June 2003 shoreline until a near equilibrium was achieved in the model with the dune recession line closely matching the existing vegetation line. This result indicated Half Moon Bay is approaching an equilibrium shoreline planform shape as it adjusts from an influx of sediment resulting from the 1993 breach. However, scale effects in the physical model related to sand transport mean that the dune recession reached in the model for a constant water level and wave energy is less than what would occur in Half Moon Bay under the same constant conditions. Therefore, some additional erosion of the dune should be expected in the coming years. The physical model did not include the benefits of placing dredged material in Half Moon Bay. The model demonstrated the gravel/cobble transition material is mobile with substantial erosion and transport of the gravel from the area of original placement toward the eastern portion of the bay
Geomorphic analysis of Mattituck Inlet and Goldsmith Inlet, Long Island, New York by Michael J Morgan( )

2 editions published in 2005 in English and held by 18 WorldCat member libraries worldwide

This study of Mattituck Inlet and Goldsmith Inlet, Long Island, NY, covers the historic and geomorphic background, literature, field measurements, numerical modeling of tidal circulation, and analysis of inlet morphologic properties. The inlets are located 8.2 km apart on the eastern end of the north shore of Long Island, NY, facing Long Island Sound Mattituck Inlet has a federally maintained channel and dual jetties, and it connects the sound to Mattituck Creek. Mattituck Inlet is the only major harbor on the north fork of Long Island is a commercial and recreational boating center. The navigation channel is maintained to a depth of 7 ft mean low water with a 2-ft allowable overdraft. Goldsmith Inlet connects the sound to Goldsmith Pond. The inlet has a nonfunctional jetty on its west side and is non-navigable, with typical depths ranging from 0.5 to 3 ft. Tidal inlets on the north shore of Long Island have received little study compared to those on the south shore that open to the Atlantic Ocean. It appears that most inlets on the north shore have been more stable and in existence longer than the inlets on the south shore. Inlets on the north shore, therefore, hold value for further understanding of basic inlet processes, in particular, of channel cross section and locational stability. Another motivation for the study of inlets along the north shore of Long Island is the large range in grain size of the sediments on this coast. Given their significant differences, it is remarkable that Mattituck Inlet and Goldsmith Inlet have remained open for more than two centuries and likely much longer. The stability of inlets on the north shore derives in part from a relatively steep inner shore face, presence of geologic controls such as glacial erratics or hard points on shore, origins of ponds as low-lying areas created after glaciation, and relatively weak longshore sediment transport that is about an order of magnitude less than that on the south shore of Long Islan7
Evaluation of downdrift shore erosion, Mattituck Inlet, New York : Section 111 study by Brian Keith Batten( )

2 editions published in 2006 in English and held by 16 WorldCat member libraries worldwide

This report was prepared for the U.S. Army Engineer District, New York, to evaluate shore erosion in response to construction of the Federal navigation project at Mattituck Inlet, NY, under the authority of Section III of the River and Harbor Act of 1968, Public Law 90-483, approved August 1968. The original navigation project was authorized in 1896 and modified in 1935 and 1964. The report is organized into seven chapters and two appendixes. Chapter 1 gives an introduction to Section III authority and the physical setting at the study site. Chapter 2 discusses shoreline change and change rates in the vicinity of Mattituck Inlet. Shoreline change rates are calculated for the region and compared for shorelines adjacent to the inlet. Chapter 3 describes numerical simulations of waves, wave-induced and tidal currents, and sediment transport pathways at the inlet. Chapter 4 develops the sediment budget for the site and region. Chapter 5 describes estimated future conditions without a project. Chapter 6 evaluates the responsibility of the Federal government for downdrift shore erosion, and Chapter 7 presents alternatives for mitigation. Appendixes A and B document analysis results for shoreline change
Corte Madera Creek, Marin County, California, modified unit 4 sedimentation study : numerical model investigation by Ronald R Copeland( )

3 editions published in 2000 in English and held by 16 WorldCat member libraries worldwide

Sediment deposition occurs in the lower reaches of the concrete-lined Corte Madera Creek flood control channel because the elevation of the channel bottom is below sea level. These sediment deposits, combined with the presence of tube worms and barnacles on the channel walls, reduce the flood-carrying capacity of the channel. The upstream portion of the original flood control project was not completed and flood flows above 3,000 cfs are not contained in the natural channel upstream. Thus, there is reduced flow competency to carry the coarse sediment load delivered by flood flows. With annual maintenance and upstream containment of breakout flows, most of the sediment deposited in the concrete channel from seasonal antecedent flow can be washed out by the time the flood peak occurs. An HEC-6 numerical sedimentation model study was conducted to evaluate several alternative plans to provide flood containment and sediment storage while also maintaining the natural characteristics of the upstream channel
A unified sediment transport formulation for coastal inlet application by Benoît Camenen( )

2 editions published in 2007 in English and held by 15 WorldCat member libraries worldwide

The Coastal Inlets Research Program (CIRP) is developing predictive numerical models for simulating the waves, currents, sediment transport, and morphology change at and around coastal inlets. Water motion at a coastal inlet is a combination of quasi-steady currents such as river flow, tidal current, wind-generated current, and seiching, and of oscillatory flows generated by surface waves. Waves can also create quasi-steady currents, and the waves can be breaking or non-breaking, greatly changing potential for sediment transport. These flows act in arbitrary combinations with different magnitudes and directions to mobilize and transport sediment. Reliable prediction of morphology change requires accurate predictive formulas for sediment transport rates that smoothly match in the various regimes of water motion. This report describes results of a research effort conducted to develop unified sediment transport rate predictive formulas for application in the coastal inlet environment. The formulas were calibrated with a wide range of available measurements compiled from the laboratory and field and then implemented in the CIRP's Coastal Modeling System. Emphasis of the study was on reliable predictions over a wide range of input conditions. All relevant physical processes were incorporated to obtain greatest generality, including: (1) bed load and suspended load, (2) waves and currents, (3) breaking and non-breaking waves, (4) bottom slope, (5) initiation of motion, (6) asymmetric wave velocity, and (7) arbitrary angle between waves and current. A large database on sediment transport measurements made in the laboratory and the field was compiled to test different aspects of the formulation over the widest possible range of conditions. Other phenomena or mechanisms may also be of importance, such as the phase lag between water and sediment motion or the influence of bed forms. Modifications to the general formulation are derived to take these phenomena into account. The
North jetty performance and entrance navigation channel maintenance, Grays Harbor, Washington( )

2 editions published in 2003 in English and held by 7 WorldCat member libraries worldwide

This report documents a study performed for the U.S. Army Engineer District, Seattle to identify and evaluate feasible methods for reducing annual maintenance dredging in the outer Federal navigation channel at Grays Harbor, WA, by modification of the north jetty. Main interest was in potential reduction of southward sand bypassing the north jetty and preservation of the jetty should the neighboring beach erode. Considerable information and predictive capability were generated concerning the behavior of the Federal navigation channel and adjacent coastal and inlet shorelines. The study was conducted as a coordinated multi-disciplinary approach involving field measurement, physical modeling of the hydrodynamics and potential sediment pathways, geomorphic analysis and sediment budget formulation, and numerical modeling of waves, circulation and sediment transport, including modeling of shoreline change and bypassing. Numerous alternatives were considered and subjected to a screening process to identify feasible engineering and physically constructible alternatives within broad criteria. Six alternatives passed the screening and were evaluated. The alternatives concerned an innovative submerged spur that would be placed parallel to the shoreline along the north jetty, partial and full rehabilitation of the north jetty, and a combination of these alternatives with structures of different lengths. The sediment-control alternatives were evaluated relative to the existing condition. The study revealed many wide-area processes controlling sedimentation in and around Grays Harbor. The scale of change in southward- directed bypassing of sediment expected to occur after construction of any of the evaluated alternatives was found to be small compared to the scale of transport at the Grays Harbor entrance from sources originating outside the entrance or by being reworked and redistributed within the entrance
South Jetty Sediment Processes Study, Grays Harbor Washington : evaluation of engineering structures and maintenance measures( )

1 edition published in 2003 in English and held by 7 WorldCat member libraries worldwide

Breach history and susceptibility study, south jetty and navigation project, Grays Harbor, Washington( )

1 edition published in 2006 in English and held by 7 WorldCat member libraries worldwide

Assessment of changes in channel morphology and bed elevation in Mad River, California, 1971-2000 by Kevin Knuuti( )

1 edition published in 2003 in English and held by 6 WorldCat member libraries worldwide

The U.S. Army Corps of Engineers currently regulates gravel-mining activities in Humboldt County, CA, under the authority described in Sec. 404 of the Clean Water Act. In order to better understand the effects gravel mining has had on the Mad River, the U.S. Army Engineer District, San Francisco, initiated this study to examine changes in channel morphology and bed elevation between 1971 and 2000. This study focused on existing cross section data and historic aerial photography from a variety of sources, and river sediment (bed-load and bed-material) data collected by the USGS. It also used new cross-section data collected in 2000 and gravel extraction records. This information was used to quantify geomorphic changes in the river, to establish a sediment budget, and to determine a sustainable yield for gravel extraction based on maintaining the river in an equilibrium condition
Hydraulic design of stream restoration projects( )

1 edition published in 2001 in English and held by 6 WorldCat member libraries worldwide

Performance characteristics of a rapidly installed breakwater system by Michael J Briggs( )

1 edition published in 2001 in English and held by 6 WorldCat member libraries worldwide

This dissertation describes an integrated study of analytical, numerical, laboratory, and field modeling efforts to quantify the performance and response of a new type of rapidly installed breakwater system (RIBS) being developed at the U.S. Army Engineer Research and Development Center's (ERDC) Coastal and Hydraulics Laboratory (CHL), located in Vicksburg, MS. RIB is a floating breakwater with two legs in a 'V' shape in plan view which provide a sheltered region from waves and currents. The performance of a floating breakwater can be quantified by the wave transmission coefficient. The structural response can be estimated using the wave-induced dynamic pressures along the structure. These pressures can be used to calculate the wave forces and moments. Both the measured wave transmission coefficient and dynamic pressure were compared to analytical and numerical predictions and several new empirical parameters have been developed
Pool lowering at Lock and Dam 1 using the lock filling and emptying system, Mississippi River, Minnesota by Richard L Stockstill( )

1 edition published in 2001 in English and held by 6 WorldCat member libraries worldwide

Effects of pool drawdown and wing dams (Pool 8), and closure dams (Pool 13), on navigation channel sedimentation processes, Upper Mississippi River( Book )

2 editions published in 2006 in English and held by 6 WorldCat member libraries worldwide

Construction of navigation locks and dams on the upper Mississippi River about 60 years ago submerged wing dam training structures, thereby reducing their effectiveness and increasing secondary channel and floodplain conveyance. The U.S. Army Engineer District, St. Paul, executed a drawdown of Pool 8 (upstream of Lock and Dam No. 8) near La Crosse, WI, during the summers of 2001 and 2002. Water levels were allowed to drop below normal minimum values to expose mud flats, promote seed germination, and benefit fish and wildlife. By lowering water levels during a drawdown, wing dam training structures submergence and floodplain conveyance will be decreased, and flow patterns around the training structures will be altered. This could result in sediment mobilization and scour in the navigation channel. During the spring of 2001, three closure dams were constructed in Pool 13 (upstream of Lock and Dam No. 13) by the U.S. Army Engineer District, Rock Island, near Savannah, IL. These closure dams are actually submerged weirs that should allow water to continue to flow into the backwater areas of the islands of Pool 13, but at reduced rates. At issue is whether the main channel might require reduced dredging in future years as a result of the construction of the closure dams and, also, whether the backwaters of the eastern side of the islands will fill with sediment
Primer : using Watershed Modeling System (WMS) for Gridded Surface Subsurface Hydrologic Analysis (GSSHA) data development--WMS 6.1 and GSSHA 1.43C by Charles Wayne Downer( )

1 edition published in 2003 in English and held by 6 WorldCat member libraries worldwide

Two-dimensional depth-averaged circulation model CMS-M2D : version 3.0( Book )

2 editions published in 2006 in English and held by 6 WorldCat member libraries worldwide

 
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English (33)