Download or read book Quantitative Shoreline Change Analysis of an Inlet influenced Transgressive Barrier System written by Chester W. Jackson and published by . This book was released on 2004 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Assessment of Shoreline Change Part 1 written by Robert A. Morton and published by DIANE Publishing. This book was released on 2008-07 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Shoreline Mapping and Change Analysis written by Mark R. Brynes and published by . This book was released on 2003 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Barrier Dynamics and Response to Changing Climate written by Laura J. Moore and published by Springer. This book was released on 2018-01-17 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents chapters, written by leading coastal scientists, which collectively depict the current understanding of the processes that shape barrier islands and barrier spits, with an emphasis on the response of these landforms to changing conditions. A majority of the world’s population lives along the coast at the dynamic intersection between terrestrial and marine ecosystems and landscapes. As narrow, low-lying landforms, barriers are especially vulnerable to changes in sea level, storminess, the geographic distribution of grass species, and the rate of sand supply—some barriers will undergo rapid changes in state (e.g., from landward migrating to disintegrating), on human time scales. Attempts by humans to prevent change can hasten the loss of these landforms, threatening their continued existence as well as the recreational, financial and ecosystem service benefits they provide. Understanding the processes and interactions that drive landscape response to climate change and human actions is essential to adaptation. As managers and governments struggle to plan for the future along low-lying coasts worldwide, and scientists conduct research that provides useful guidance, this volume offers a much-needed compilation for these groups, as well as a window into the science of barrier dynamics for anyone who is generally interested in the impacts of a changing world on coastal environments.

Download or read book Prediction of Shoreline Changes Near Tidal Inlets written by Barry D. Douglas and published by . This book was released on 1989 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Digital Shoreline Analysis System DSAS Version 4 0 written by and published by . This book was released on 2009 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Backbarrier Sedimentation and Inlet Induced Shoreline Change Associated with a Migrating Tidal Inlet written by Christopher William Freeman and published by . This book was released on 2001 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geomorphic Analysis of U S East Coast Shoreline Behavior and the Influence of Tidal Inlets on Coastal Configuration written by Francis Anthony Galgano and published by . This book was released on 1998 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photointerpretation of Shoreline Changes in Selected Areas Along the Atlantic and Gulf Coasts of the United States written by Mohamed Taha El-Ashry and published by . This book was released on 1966 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Before planning shore protection in a given area, it is necessary to know the changes that took place in the past few years and to determine the quantity of sediment eroded or added to the beaches. The use of quantitative marine geology in connection with the analysis of shoreline development is being slowly accomplished by many individuals through isolated studies of beaches, cliffs, deltas, and estuaries, but has only lately been attempted for whole regions. It is the purpose of this study to report recent shoreline changes in three states using sequential aerial photography and to compare them with earlier changes (as early as 1859) using nautical charts and topographic maps. The causes of such changes are discussed and correlated with storms and prevailing physical conditions.

Download or read book Morphodynamic Changes of the Parramore Cedar Barrier island System and Wachapreague Inlet Virginia from 1852 to 2011 written by Trent Michael Richardson and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation is a study of the shoreline and tidal inlet changes of the Parramore-Cedar barrier-island and Wachapreague tidal inlet system through the integration of a variety of geospatial data sets over a range of spatial and temporal scales. Fundamental changes to the historical trends of shoreline and tidal inlet behavior provide a means to quantitatively test the three-stage model of runaway transgression (Fitzgerald et al., 2004). The analysis of a robust set of shoreline data sets demonstrates the pattern of clockwise rotational instability over the long term as documented by Leatherman et al. (1982) has evolved into sustained rapid retreat along the entire outer shoreline of Parramore Island. In addition, Cedar Island has transitioned from in-place narrowing to rapid barrier rollover and landward migration through overwash and inlet processes. The non-inlet-influenced, open-ocean shoreline of Parramore Island experienced a -4.1 m/yr retreat rate from 1852 to 1998 and a -12.2 m/yr retreat rate from 1998 to 2010, according to a linear regression analysis. Similarly, Cedar Island's non-inlet-influenced, open-ocean shoreline underwent a -5.5 m/yr retreat rate from 1852 to 2007 and a -15.4 m/yr retreat rate from 2007 to 2010, also according to a linear regression analysis. The short-term retreat rates for both islands are nearly triple the long-term rates. These increases in shortterm retreat rates constitute a fundamental change in the pattern of historical shoreline movement for the Parramore-Cedar barrier-island system. The cross-sectional area of an inlet throat is used as a proxy to calculate tidal prism and ebb-tidal delta volume of tidal inlets. The historical cross-sectional areas for Wachapreague Inlet were 1845 m2 in 1852, 4473 m2 in 1871, 4737 m2 in 1911, 4572 m2 in 1934, 4047 m2 in 1972, 4398 m2 in 2007, 4735 m2 in 2010 (April), 5014 m2 in 2010 (August), and 5210 m2 in 2011. Tidal prism and ebb-tidal delta volumes at Wachapreague Inlet fluctuated from 1871 to 2011 with tidal prism ranging between 4.82 x 10[subscript 7] m[subscript 3] and 6.09 x10[subscript 7] m[subscript 3] and ebb-tidal delta volumes ranging between 1.85 x 10[subscript 7] m[subscript 3] and 2.46 x10[subscript 7] m[subscript 3]. From 1871 to 2007, the long-term linear regression rates of change were -2.4 m[subscript 2]/yr for cross-sectional area, -2.67 x10[subscript 4]m[subscript 3]/yr for tidal prism, and -1.26 m[subscript 3]/yr for ebb-tidal delta volume. However, from 2007 to 2011, the short-term linear regression rates of change switched to high rates of increase with 186.1 m[subscript 2]/yr for cross-sectional area, 2.04 x10[subscript 6]m[subscript 3]/yr for tidal prism, and 9.89 x10[subscript 5]m[subscript 3]/yr for ebb-tidal delta volume. Overall, from 1871 to 2007, cross-sectional area, tidal prism, and ebb-tidal delta volumes were characterized by relative stability to a slight decrease with a distinct increase more recently (2007-2011). This research accounts for the natural variability in tidal prism on a monthly basis (e.g., neap vs. spring tides, perigee vs. apogee) and a seasonal basis (e.g., potential coastal setup caused by meteorological events, thermal expansion of the water column [steric effect]) by utilizing a 15% natural variability in the tidal-inlet analyses as documented by O'Brien (1969). These spatial analyses provide insight into how shoreline and bathymetric changes of the Parramore-Cedar barrier-island system are driven by 1) the southern extension of the large arc of erosion located south of Assateague Island in response to sediment trapping at the large recurved spit complex at Fishing Point, Virginia; 2) relative sea level rise along the southern Delmarva Peninsula; 3) updrift barrier-island breaching north of Wachapreague Inlet along Cedar Island and other breaches further north; and 4) increased storminess along the outer barrier islands of the Virginia Eastern Shore. Of these four coastal-change drivers, the southern propagation of the large arc of erosion (i.e., lack of sediment supply) appears to be the primary driver of coastal evolution along the Parramore-Cedar barrier-island system for the past 150 years and potentially for the next 10 to 100 years into the future. Furthermore, this research presents a six-stage model of barrier evolution along the southern Delmarva Peninsula. The six-stage model accounts for changes in sediment supply, relative sea level rise, increased storminess, and the projected consequences to the Parramore-Cedar barrier-island system. The significance of short-term shoreline and bathymetric changes that depart from historical trends is important because these developments may indicate wider patterns of barrier-island change for the entire Virginia Eastern Shore and, perhaps, large expanses of mixed-energy coasts along the entire U.S. Atlantic seaboard.

Download or read book Shoreline Change Analysis of Hooghly Estuary Using Multi Temporal Landsat Data and Digital Shoreline Analysis System written by Dibyendu Dutta and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-term (1973,Äì2021) shoreline displacement, rate of change, and temporal pattern were examined using multi-date Landsat data and Digital Shoreline Analysis System (DSAS) along the 200¬†km coast of Hooghly estuary. Orthogonal transects of 100¬†m apart were casted for calculation of End Point Rate and Weighted Linear Regression rate on different temporal scales for seven analysis zones. The shoreline change pattern was established using Hierarchical agglomerative clustering. The study reveals that almost 43.45% of the beachfront has eroded and 56.55% has accreted during the past four decades. The average erosion rate varies between ,àí0.01 and ,àí13.71¬†m¬†yr.,àí1 and accretion of ,àí0.01 to ,àí22.30¬†m¬†yr.,àí1. The littoral drift resulted in a maximum seaward aggression by 1096.89¬†m in the zone 1. Landward movement was maximum (,àí602.96¬†m) in the zone 4. Although west bank is prograding @ 3.47¬†m¬†yr.,àí1 (¬±5.83), the east bank is eroding @ 1.30¬†m¬†yr.,àí1 (¬±4.08). Based on the cluster analysis about ,Äì1.87% of the shoreline exhibits consistent erosion over all the intervals, whereas trend was evident in 4.73% of the coastline. The portions of coastlines, which exhibit high erosion rate and consistent erosion need immediate attention and policy intervention.

Download or read book Quantitative Analysis of Shoreline Change Sargent Texas written by James E. Sealy and published by . This book was released on 1975 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book New Methods for Positional Quality Assessment and Change Analysis of Shoreline Features written by Tarig Abdelgayoum Ali and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Four positional quality measures for linear features presented by Ramirez (2000) were thoroughly investigated on shoreline features including Generalization Factor, Distortion Factor, Bias Factor, and Fuzziness Factor. The investigation addresses the uniquness of each one of the four measures and the effect of random errors, systematic errors and blunders in the shoreline on the four measures. The results show that these four measures describe different characteristics of a shoreline. Also a new shoreline change modeling method was developed in this study based on a new concept known as shoreline-segment orientation. This method helps to better analyze shoreline-change at the segment level by studying the angular deviation from the surrounding segments and also from the whole shoreline. Shoreline segment orientation is critical in shoreline erosion analysis because it considers the direction of the incoming waves towards the shoreline. The results of analyzing shoreline change in the study area based on this concept of segment orientation have been found to correlate to the recorded change in the period of study. Using shoreline segment as a modeling unit, a new shoreline change forecast model was developed to analyze changes and furthermore to predict future shoreline positions. This model has the advantage of capturing the physical movement of a given shoreline segment through time by two indices. These indices represent the effects of scale-and-rotation and translation that have occurred to shoreline at a previous time causing the change. These indices are assumed to encapsulate the effects of the coastal erosion processes in the study area including shoreline shape, water-level change, shoreline geology or soil types, and erosion structures. The model uses the recorded change in the period of study to capture the pattern of shoreline-change at the segment level. Furthermore, the incorporation of shoreline positional quality information in the shoreline-change model has been addressed in this study. The significance of the models developed in this research is demonstrated by the quality of the results obtained in the case study. Also this study showed the need for future research on the Bias factor for positional quality assessment, and further investigation to expand the linear quality metrics for assessing the positional quality of other types of linear features.

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 Southeastern Geology written by and published by . This book was released on 2007 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Barrier Island Migration written by Stephen P. Leatherman and published by . This book was released on 1985 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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: