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Author: Robert Bruce Nairn Publisher: ISBN: Category : Beach nourishment Languages : en Pages : 0
Book Description
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.
Author: Robert Bruce Nairn Publisher: ISBN: Category : Beach nourishment Languages : en Pages : 0
Book Description
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.
Author: The Royal Society of Canada Publisher: National Academies Press ISBN: 0309100682 Category : Science Languages : en Pages : 162
Book Description
Since the 1950s,the International Joint Commission (IJC) of Canada and the United States has issued water regulation and management plans for Lake Ontario and the St. Lawrence River. Changes in recreational, environmental, navigational and other uses of the water system have prompted the IJC to consider replacing the current water regulation plan in operation for more than 40 years. IJC's goals for a replacement plan include sound scientific foundations, public participation, transparency in plan development and evaluation, and inclusion of environmental considerations. To help develop and select the new plan, the IJC supported a 5-year, $20 million Lake Ontario-St. Lawrence River Study (LOSLR Study). The LOSLR Study uses models to compile and integrate data gathered from a series of commissioned studies of wetlands, species at risk, recreational boating, fisheries, coastal erosion and flooding, commercial navigation, hydropower, industrial, municipal and domestic water intakes, public information and education, and hydrologic modeling. This report reviews a portion of the study that focused on wetlands and species at risk and three of the models that were used. The report finds that the overall breadth of the LOSLR study is impressive, and commends the scale and inclusiveness of the studies and models. In terms of informing decision making, however, the reviewed studies and models show deficiencies when evaluated against ten evaluation criteria, including treatment of uncertainty, quality control/quality assurance, thorough documentation, and empirical foundations. Among the report's recommendations is a need for more thorough documentation of study methods and findings, stronger and more consistent quality control, and more attention to how uncertainty should be addressed to better inform decision making. This NRC study was conducted in collaboration with the Royal Society of Canada.
Author: William R. Dally Publisher: ISBN: Category : Coast changes Languages : en Pages : 1084
Book Description
Ninety-two proceedings papers from the 1995 conference reviewing large-scale field and laboratory experiments in the European Community, Japan, the US, and the former Soviet-Bloc countries of Russia, Bulgaria, East Germany, and Poland. These volume particularly features the discussions from those latter countries since most of their experiments have not been, until now, released to the West. In more specific terms, the papers report findings in wave motion in vegetated and non-vegetated coastal zone, surf zone modeling, planform considerations of beach nourishment, swash dynamics, runup, low- frequency motion, longshore currents, cross-shore transport, and profile evolution. Annotation copyright by Book News, Inc., Portland, OR
Author: U. S. Army Corps of Engineers Publisher: The Minerva Group, Inc. ISBN: 9781410215017 Category : House & Home Languages : en Pages : 172
Book Description
This book is intended for property owners whose land is located on sheltered waters protected from direct action of open ocean waves. As a reader, you may be personally concerned about some aspect of shore protection because your house or cottage is threatened by continued erosion or a sandy beach you once enjoyed as disappeared. Whatever your personal circumstances, it is probably small comfort to know that your plight is shared by many others. In trying to solve your problem, you may have sought the advice of others or observed the means they have used to combat erosion problems. Or, you may have been approached by a local firm trying to sell either construction services or some shore protection device. While such resources may sometimes achieve satisfactory results, you and a majority of others are probably reading this because you have been unable to solve your problems and have suffered substantial capital losses in the process. If such is the case, then this report is for you.
Author: Robert Bruce Nairn
Author: Robert Bruce Nairn
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Author: Larry E. Parson
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Author: Waterways Experiment Station (U.S.)
Author: The Royal Society of Canada
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Author: William R. Dally
Author: U. S. Army Corps of Engineers
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