User's Guide to the Shoreline Modeling System (SMS)

Source: https://erdc-library.erdc.dren.mil/jspui/This report documents a microcomputer-based software package (SHORELIM MODELING SYSTEM) that contains a collection of generalized computer programs assembled to enable the user to perform complete longshore sediment transport processes and shoreline evolution assessments. This software package was developed at the Coastal Engineering Research Center (CERC) to facilitate the technology transfer of recently developed coastal engineering tools throughout the Corps. The modeling system is presently comprised of two major numerical models (RCPWAVE and GENESIS) packaged together with more than 15 system support programs. The system support programs automate the data analysis and input data generation tasks necessary to execute RCPWAVE and GENESIS in design-oriented applications. Technical documentation with example applications of each of the computer programs and numerical models is provided in the GENESIS report series (CERC-89-19, Reports 1 and 2). This report provides general instructions for the operation of the SHORELINE MODELING SYSTEM and outlines the capabilities of the individual components contained in the system

Bolsa Bay, California, Proposed Ocean Entrance Systems Study. Report 2: Comprehensive Shoreline Response Computer Simulation: Bolsa Bay, California

Source: https://erdc-library.erdc.dren.mil/jspui/This report describes an application of the shoreline change numerical model GENESIS in the assessment of potential shoreline impacts resulting from the construction of a structured inlet entrance system at Bolsa Chica, California. The methodology of shoreline change modeling, including the preliminary steps of data collection, analysis, and preparation for input to the shoreline change model is discussed, as well as interpretation of model results. In this study, three simultaneous independent wave sources (Northern Hemisphere swell, Southern Hemisphere swell, and locally generated wind sea) were used to drive the shoreline change model. In addition to estimating potential shoreline impacts, three project impact mitigation design alternatives were quantitatively investigated

Data Report: Laboratory Testing of Longshore Sand Transport by Waves and Currents; Morphology Change Behind Headland Structures

Data from five series of movable bed laboratory experiments are presented herein. These experiments were conducted in the Largescale Sediment Transport Facility at the U.S. Army Engineer Research and Development Center, Vicksburg, MS. The data collected from these experiments are being used to improve longshore sand transport relationships under the combined influence of waves and currents and the enhancement of predictive numerical models of beach morphology evolution, in particular, with respect to modeling of tombolo development at detached breakwates and T-groins. These data were instrumental in the development and validation of GENESIS-T (Hanson et al. 2006) an enhanced version of GENESIS that allows for continued simulation of shoreline evolution after tombolo formation at detached breakwaters

Numerical Model Study of Breakwaters at Grand Isle, Louisiana

Source: https://erdc-library.erdc.dren.mil/jspui/This report presents the results of a numerical shoreline response investigation of a proposed segmented detached breakwater project offshore of Grand Isle, Louisiana. Functional shore protection characteristics of the recommended breakwater design alternative are further evaluated using empirical methods together with comparison to a recently constructed breakwater project between Holly Beach and Ocean View Beach in Cameron Parish, LA. The investigation involved the following three technical tasks: (a.) conducting a nearshore wave transformation study, (b.) numerical modeling of shoreline response, and (c.) comparison of proposed breakwater design with empirical functional design guidance and similar projects. Results of this investigation indicate good agreement between the numerically-generated (GENESIS) estimates of shoreline change in the vicinity of the proposed breakwater project at Grand Isle and the observed shoreline response at the Cameron Parish projects. Empirical relationships for functional breakwater design provided a relatively poor indication of actual beach response to breakwaters along the Louisiana coast. Because of the environmental similarities (mild beach slope, wave climate, tide range, etc.) between Grand Isle and Cameron Parish it is recommended that the Cameron Parish breakwater project together with the GENESIS results be used for designing the Grand Isle breakwater project.United States. Army. Corps of Engineers. New Orleans District

Coastal processes at Sea Bright to Ocean Township, New Jersey. Volume 2, Appendix B-G

Source: https://erdc-library.erdc.dren.mil/jspui/Appendix B: This appendix provides information on the Wave Information Study(WIS) Phase III hindcast wave data. Included is a summary of wave statistics for the 20-year period 1956 - 1975. Table 81 gives the statistics categorized by wave approach angle in degrees. Values in the direction tables represent the percent of the 20 years that waves occur from the specified direction bands for the indicated height and period ranges. The values have been multiplied by 1,000 to allow more accuracy with less printing space. Summations are provided in the last column and row of each table. Table 82 is a summary of the same data for waves from all directions. Values in Table 82 are multiplied by 100. The parameters listed in the last line of the all-direction table are derived from all preceding directional tables for the full 20 years. There were 58,440 cases analyzed, but not all cases resulted in finite wave conditions. Approximately 15.77 percent of the wave conditions at station 54 were considered calm. The angle class percentage found in each angle class table has been rounded to the nearest 0.1 percent in the all-directions table and in summing the percent occurrence found in the individual angle class tables. Table B3 is a summary of the 200 largest wave heights ranked in descending order, together with the corresponding date, wave period, and wave direction measured from the south

Coastal Processes from Asbury Park to Manasquan, New Jersey

Source: https://erdc-library.erdc.dren.mil/jspui/This report describes a study of coastal processes along the Atlantic coast from Asbury Park to Manasquan, New Jersey. Numerical predictive models for storm surge, dune erosion, nearshore wave transformation, and shoreline response were used in conjunction with an intensive analysis of available physical data to assist in the design, evaluation, and implementation of comprehensive shore protection plans for this densely populated and heavily structured coastal region. the study was divided into four independent but interrelated areas: (a) deepwater wave climate analysis and nearshore wave transformation, (b) long-term shoreline response numerical modeling, (c) development of coastal stage-frequency relationships, and (d) numerical modeling of storm-induced dune erosion. The results, interrelations, and recommendations of these tasks are presented in the main body of the report together with guidance for the interpretation of the numerical model results. The statistics of the wave hindcast data base, along with graphical representations of the model results, are given in the appendices. Six proposed and four revised design alternatives were evaluated using the shoreline response model to predict the platforms evolution of the beach. Cross-shore responses of the proposed design alternatives were evaluated in a probabilistic manner using the dune erosion model in conjunction with the stage-frequency relationships

Physical Model Investigation of Morphology Development at Headland Structures

This paper describes four series of physical model experiments conducted to understand the response of the beach to headland structures. Data sets were generated for testing predictive relationships for sand transport in the presence of waves and an external current and testing of model algorithms for simulating salients and tombolos behind nearshore headland structures. The paper summarizes the experiment set up, and data collected in the physical model, processes driving the morphology development, and quantification of the time rate of morphology change behind headland structures as well as the observed sediment transport pathways