Quantitative Analysis of Shoreline Change, Sargent, Texas PDF Download
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Author: James E. Sealy
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 200
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Book Description
The constantly increasing urban and industrial demands on Texas shorelines have placed great stress on a delicately balanced environment. There are tremendous political and economic incentives for the development of methods which will predict the reaction of the coastal system to planned man-made changes on or near the coastline, This thesis examines a method for shoreline stability analysis which could be used in conjunction with conventional studies of beach erosion rates to provide a more thorough understanding of the interaction of waves, the longshore current, and the coastal sediments. A method for the prediction of erosion and deposition rates related to the interaction of longshore currents and the sediment discharged at the mouth of a river is developed, and this method is applied to the new Brazos River delta near Freeport, Texas.
Author: James E. Sealy
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 200
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Book Description
The constantly increasing urban and industrial demands on Texas shorelines have placed great stress on a delicately balanced environment. There are tremendous political and economic incentives for the development of methods which will predict the reaction of the coastal system to planned man-made changes on or near the coastline, This thesis examines a method for shoreline stability analysis which could be used in conjunction with conventional studies of beach erosion rates to provide a more thorough understanding of the interaction of waves, the longshore current, and the coastal sediments. A method for the prediction of erosion and deposition rates related to the interaction of longshore currents and the sediment discharged at the mouth of a river is developed, and this method is applied to the new Brazos River delta near Freeport, Texas.
Author: William N. Seelig
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 180
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Book Description
An environmental study was conducted at Sargent Beach, Texas, an erosive beach bordering the Gulf of Mexico. The objectives of this study were to determine the characteristics of the beach, the magnitudes of changes which have occurred at Sargent Beach, and to analyze possible factors which may be controlling the observed beach changes. Results show the beach has eroded at an increasing rate since at least 1930 with recent shoreline retreat rates averaging 30 feet per year. Storms are the primary agents that remove material from the beach, while lost sediments are not replaced because Brazos River sands normally expected to move alongshore are trapped in the Brazos delta. Hurricanes may free stored deltaic sands carrying major quantities offshore from beach areas. Beach erosion is further aggravated by decreased sand input to the coast from the Brazos River due to alterations to the river and its drainage basin in the 1940's.
Author: Robert A. Morton
Publisher: DIANE Publishing
ISBN: 1437902596
Category : Science
Languages : en
Pages : 44
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Book Description
Beach erosion is a chronic problem along open-ocean shores of the U.S. As coastal populations continue to grow and community infrastructures are threatened by erosion, there is increased demand for accurate info. regarding past and present trends and rates of shoreline movement, and a need for a comprehensive analysis of shoreline movement. This report on states bordering the Gulf of Mexico (Florida, Alabama, Mississippi, Louisiana, and Texas) summarizes the methods of analysis, interprets the results, provides explanations regarding the historical and present trends and rates of change, and describes how different coastal communities are responding to coastal erosion in 2004 (prior to Hurricanes Katrina and Rita). Illustrations.
Author: Cesar Augusto Arias Moran
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
One of the most important aspects of coastal management and planning programs that needs to be investigated is shoreline dynamics. Long-term coastal analysis uses historical data to identify the sectors along the coast where the shoreline position has changed. Among the information that can be obtained from these studies are the general trend of coasts, either advancing or retreating. The erosion or accretion rates at each location can be used to forecast future shoreline positions. The current techniques used to study shoreline evolution are generally based on transects perpendicular to a baseline at selected points. But these techniques proved to be less efficient along more complex shorelines, and need to be refined. A new and more reliable method, the topologically constrained transect method (TCTM), was developed for this study and tested using data available for three sectors of the Texas Gulf Coast. Output data generated from TCTM also allowed performing shoreline evolution analysis and forecasting based on historical positions. Using topological constrained transects, this study provides a new method to estimate total areas of accretion or erosion at each segment of the coastline. Reliable estimates of future gains or losses of land along the coast will be extremely useful for planning and management decisions, especially those related to infrastructure and environmental impacts, and in the development of coastal models. Especially important is the potential to quickly identify areas of significant change, which eliminates the need for preliminary random sample surveying, and concentrate higher-resolution analyses in the most significant places. The results obtained in this research using the new methodology show that the Texas coast generally experiences erosion, with anthropogenic factors responsible for accretion. Accretion areas are located near coastal infrastructure, especially jetties that block the along shore sediment transport. The maximum erosion rate obtained in the study area is 5.48 m/year. This value helps make us aware of the powerful dynamic of the sector.
Author: Robert Dolan
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 236
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Book Description
Author: William N. Seelig
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 28
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Book Description
Author: Jeffrey G. Paine
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 60
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Book Description
Author: Robert A. Morton
Publisher: Durham, N.C. : Duke University Press
ISBN:
Category : Business & Economics
Languages : en
Pages : 218
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Book Description
Author:
Publisher:
ISBN:
Category : Marine resources
Languages : en
Pages : 944
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Book Description
Author: Eugene Jaworski
Publisher:
ISBN:
Category : Coast changes
Languages : en
Pages : 52
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Book Description
