Download or read book Numerical Modeling of Alongshore Sediment Transport and Shoreline Change Along the Galveston Coast written by Khairil Irfan Sitanggang and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An alongshore sediment transport and shoreline change analysis on Galveston Island in the period of 1990-2001 is conducted in this study using the Generalized Model for Simulating Shoreline Change (GENESIS). The study is divided into three main parts: 1. Assessment of the numerical accuracy of GENESIS, 2. Assessment of the alongshore sediment transport and shoreline change on the Galveston coast in the period of 1990-2001, and 3. Assessment of several erosion control practices on the Galveston coast for the period of 2001-2011. The first assessment shows that GENESIS has a numerical error which tends to be large for low energy wave (small breaking wave height) and large breaking wave angle. This numerical inaccuracy cannot be neglected and needs to be compensated for. This can be done, for instance, by adjusting the transport parameter K1. In the second assessment, good agreement between the calculated and measured transport/shoreline is achieved, particularly on the West Beach. Comparison between the potential alongshore sediment transport and sediment budget-inferred alongshore transport provides a systematic way of selecting the proper wave data set for the alongshore and shoreline change calculation. The third assessment proves that beach nourishment is the best alternative to overcome/reduce the erosion problem on the Galveston coast. Constructing coastal structure (groins, offshore breakwater) on the West Beach does not resolve the problem of erosion, but instead shifts it further west.

Download or read book Genesis Generalized Model for Simulating Shoreline Change written by Hans Hanson and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents a numerical modeling system named GENESIS which is designed to simulate long-term shoreline change at coastal engineering projects as produced by spatial and temporal changes in longshore sand transport. Typical longshore extents and time periods of modeled projects can be in the ranges of 1 to 100 km and 1 to 100 months, respectively, and almost arbitrary numbers and combinations of groins, detached breakwaters, seawalls, jetties, and beach fills can be represented. GENESIS contains what is believed to be a reasonable balance between present capabilities to efficiently and accurately calculate coastal sediment processes from engineering data and the limit in both the data and knowledge of sediment transport and beach change. The modeling is operated through a structured and user-friendly interface so that the operator need not become familiar with detailed aspects of the computer code. This report serves as a technical reference to Version 2 of GENESIS and is also designed to be an operator's manual by providing instructions for using the interface. The method for applying the model is described from the perspective of the needs of both engineers and planners who deal with evaluate shore-protection projects. A fully documented case study involving application of the modeling system and exercise of many of its features is provided.

Download or read book Numerical Model for Studying Shoreline Change in the Vicinity of Coastal Structures written by Hans Hanson and published by . This book was released on 1980 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reconnaissance Study of Wave Refraction and Shoreline Change for the Galveston Texas Beach Nourishment Borrow Sites written by Cheryl A. Brown and published by . This book was released on 1994 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tracings: 95.06, 16.72.

Download or read book GENESIS Generalized Model for Simulating Shoreline Change written by Hans Hanson and published by . This book was released on 1989 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sediment Transport and Morphodynamics Modelling for Coasts and Shallow Environments written by Vanesa Magar and published by CRC Press. This book was released on 2020-03-09 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference for engineers, and graduate students covers sediment transport and morphodynamics modelling in nearshore environments. It presents the fundamentals required for understanding the physics and for setting up numerical models. This book covers hydrodynamics of estuarine and coastal environments, properties of seafloor and estuarine composition, and hydroenvironmental interactions; emphasising the inter-relations of small- and large-scale processes, and short- and large-evolution timescales. The focus is, principally, on the application of shallow-water theory, but some surface wave models, and coupling of shallow-water models with surface waves is also discussed to some extent. The guidance on running regional models and the case studies presented are directed to managed realignment, coastal protection, climate change impacts, and offshore renewables. Key features: Gives a balanced review of this rich interdisciplinary area Bridges practical engineering and research Offers both large- and small-scale application Suits graduate students and researchers as well as consulting engineers Vanesa Magar is a senior researcher and associate professor at the Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE) in Baja California, Mexico. She was formerly a researcher and then a lecturer at Plymouth University, UK.

Download or read book NUMERICAL MODELING OF SHORELINE CHANGES AROUND MANAVGAT RIVER MOUTH written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: River mouths are very active coastal regions. Continuous sediment supply by the river and the movement by wave action cause the shoreline to change in time and space. Modeling of shoreline changes is an essential step before the design of any coastal engineering project. This research aimed to develop a system of numerical models to present the shoreline changes around a river mouth. The system of numerical models has three components: 1) modeling of nearshore wave characteristics, 2) modeling of longshore sand transport rates using the results of the first component, 3) modeling of shoreline changes using the estimated sand transport rates. Thus, firstly, deep water wave characteristics including the annual wave rose affecting Manavgat River mouth have been obtained from the database of NATO TU-WAVES Project. Then REF/DIF1 and SWAN nearshore wave models have been used to find out nearshore wave conditions. Since the results obtained from REF/DIF1 wave model have been found to be more reasonable compared to SWAN’s output, REF/DIF1 wave model has been used in preparing a time series nearshore reference wave file with three hours time interval. This reference file has been used to run GENESIS. Last step of the numerical shoreline change modelling of Manavgat River mouth was the calibration procedure in which the “transport parameters” k1 and k2 have been determined. As there is lack of measurements of shoreline positions that can be used in calibrating shoreline change model, k1 and k2 has been approximately found to be k1=0.516 and k2=0.9 by using an empirical sediment transport formula. As a future study, it is recommended that when the protection structure controlling the river mouth is finished, the measurements of shoreline position behind the structure should be used in verification of shoreline change model in order to get more accurate results.

Download or read book National Assessment of Shoreline Change written by and published by . This book was released on 2006 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Numerical Model to Simulate Sediment Transport in the Vicinity of Coastal Structures written by Marc Perlin and published by . This book was released on 1983 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: An implicit finite-difference, n-line numerical model is developed to predict bathymetric changes in the vicinity of coastal structures. The wave field transformation includes refraction, shoaling, and diffraction. The model is capable of simulating one or more shore-perpendicular structures, movement of offshore disposal mounds, and beach fill evolution. The structure length and location, sediment properties, equilibrium beach profile, etc., are user-specified along with the wave climate. (Author).

Download or read book Sediment Transport Processes in the Nearshore Waters Adjacent to Galveston Island and Bolivar Peninsula written by Gary Lynn Hall and published by . This book was released on 1976 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: The net longshore transport of sand along Bolivar Peninsula and Galveston Island during 1975 was toward the southwest at rates that varied from 1.52 x 10 5 yds3/yr at Sea Isle on Galveston Island to 5.4 x 10 4 yds3/yr at Gilchrist on Bolivar Peninsula. Net longshore transport was toward the southwest during months of fall, winter and spring and generally toward the northeast only during three months of summer. An excellent correlation exists between the longshore transport direction and several factors including the frequency of the observed wave approach, speed and direction of the longshore current and the wind direction and velocity. Fluorescent sediment tracer studies revealed that a significant portion of the longshore transport showed a tendency to move parallel to the shoreline or offshore toward the breaker zone under most surf conditions. The seaward transport of sand in the surf zone was characteristically along paths nearly parallel to the angle of wave approach until reaching the breaker zone. Transport parallel to the shore at a significant distance shoreward of the primary breaker zone was usually attributed to entrainment in moderate- to high-velocity longshore currents, transport on the crests of bars or channelized flow in the runnels. Sediment tracer analyses conducted along the north and south jetties revealed that transport along these structures was controlled primarily by wind direction, wave action and the strength and direction of the prevailing tidal currents. Strong northerly winds create intense wave action which vigorously churns the sediments and batters the north jetty. Enhanced ebb-tidal currents transport the sandy sediments seaward along the jetty, through the small boat passage into the outer bar channel and ultimately around the seaward extremity of the jetty.

Download or read book A Numerical Model to Simulate Sediment Transport in the Vicinity of Coastal Structures Classic Reprint written by Marc Perlin and published by Forgotten Books. This book was released on 2017-10-28 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Numerical Model to Simulate Sediment Transport in the Vicinity of Coastal Structures This report was written by Marc Perlin and Robert G. Dean, Coastal and Offshore Engineering and Research, Inc., Under Contract No. Dacw72-80-c-0030. The cerc contract monitor was Dr. F. Camfield, Chief, Coastal Design Branch. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Master s Theses Directories written by and published by . This book was released on 2004 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".

Download or read book Analytical Solutions of the One Line Model of Shoreline Change Classic Reprint written by Magnus Larson and published by Forgotten Books. This book was released on 2017-10-28 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Analytical Solutions of the One-Line Model of Shoreline Change The investigation described in this report was authorized as a part of the Civil Works Research and Development Program by the Office, Chief of Engi neers (oce), US Army Corps of Engineers. The work was performed under the Coastal Sediment Transport Processes Work Unit 324 - 1, Shore Protection and Restoration Program, at the Coastal Engineering Research Center (cerc) of the US Army Engineer Waterways Experiment Station (wes). Messrs. John H. Lock hart, Jr., and John G. Housley were the oce Technical Monitors. The study was conducted from 1 July 1986 through 31 December 1986 by Dr. Nicholas C. Kraus, Research Physical Scientist and Principal Investigator, Coastal Sediment Transport Processes Work Unit, Research Division (cr), cerc, in conjunction with related engineering studies by Messrs. Magnus Larson and Hans Hanson of the University of Lund, Sweden. This report presents the over all results of these efforts. The cerc portion of the study was conducted under general supervision of Dr. James R. Houston, Chief, cerc; Mr. Charles C. Calhoun, Jr., Assistant Chief, cerc; and Dr. Charles L. Vincent, Program Manager, Shore Protection and Restoration Program, cerc; and under direct supervision of Mr. H. Lee Butler, Chief, cr, cerc. Work at the University of Lund was performed under general supervision of Dr. Gunnar Lindh, Head, Department of Water Resources Engineering, Institute of Science and Technol ogy. Mr. Bruce A. Ebersole provided technical review. This report was edited by Ms. Shirley A. J. Hanshaw, Information Technology Laboratory, Information Products Division, wes. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book The Proceedings Of The Coastal Sediments 2015 written by Jun Cheng and published by World Scientific. This book was released on 2015-04-23 with total page 3129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Proceedings contains over 260 papers on cutting-edge research presented at the eighth international Symposium on Coastal Sediment Processes, held May 11 - 15, 2015, in San Diego, California, USA. This technical specialty conference was devoted to promoting an interdisciplinary exchange of state-of-the-art knowledge among researchers in the fields of coastal engineering, geology, oceanography, and related disciplines, with the theme of Understanding and Working with Nature.Focusing on the physical aspects of the sediment processes in various coastal environments, this Proceedings provides findings from the latest research and newest engineering applications. Sessions covered a wide range of topics including barrier islands, beaches, climate and sea level, cohesive and noncohesive sediments, coastal bluffs, coastal marsh, dredged sediments, inlet and navigation channels, regional sediment management, river deltas, shore protection, tsunamis, and vegetation-sediment interaction. Several special sessions included: Relevant science for changing coastlines: A Tribute to Gary Griggs; North Atlantic Coast Comprehensive Study and post-super-storm Sandy work; long-term coastal evolution; barrier islands of Louisiana; sea-level rise and super storms in a warming world; predicting decadal coastal geomorphic evolution; and contrasting Pacific coastal behavior with El Niño Southern Oscillation (ENSO), are also featured.

Download or read book Engineering and Design written by United States. Army. Corps of Engineers and published by . This book was released on 1992 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Morphodynamic Model for Predicting Beach Changes Based on Bagnold s Concept and Its Applications written by Takaaki Uda and published by BoD – Books on Demand. This book was released on 2018-12-19 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have developed models for predicting beach changes applicable to various problems on real coasts. One of them is the contour-line-change model to predict long-term beach changes caused by the imbalance in longshore sand transport, which is a kind of N-line model. Because the calculation of the nearshore current is not needed in this model, and the computational load is small, it has an advantage in the prediction of long-term topographic changes on an extensive coast. However, the handling of boundary conditions becomes difficult when offshore coastal structures are constructed in a complicated manner, and in this regard the so-called 3D model has an advantage. Taking this point into account, the authors developed a morphodynamic model (BG model) by applying the concept of the equilibrium slope and the energetics approach, in which depth changes on 2D horizontal grids are calculated.

Download or read book Introduction to Coastal Processes and Geomorphology written by R. Davidson-Arnott and published by Cambridge University Press. This book was released on 2010 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete guide to coastal processes and their related features for undergraduate students.