Download or read book Change in Shoreline Positon for Two Consecutive Years Using LIDAR Along the Outer Banks North Carolina written by Rachel Marie Taylor and published by . This book was released on 2012 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: The signal of shoreline change for the Outer Banks, North Carolina is non-stationary. A baseline, west of the first line of dunes, is created for each 5 km section and shore-perpendicular profiles constructed every 20 meters in the alongshore direction. The profiles are obtained from two light detection and ranging (LIDAR) surveys performed in June 22, 2006 and July 7 and 8, 2007. For five selected sections of coast, Fourier analysis of the shoreline change signal indicates the signal is self-affine i.e. the mean is not stationary, but changes with position along the signal (Malumud and Turcotte, 1999) with a scaling exponent that varies from 1.2 to 2.1. Four of the five selected sections of coast, Wavelet analysis of the shoreline change signal indicate the signal is self-affine with a scaling exponent that varies from 1.4 to 2.3. The power scaling exponents extend over three orders of magnitude in length from 0.1 to 10 km. The values of the power scaling exponent (greater than 1) indicate that the signal has no characteristic length scale and is non-stationary as the power scaling increases, low-frequency (high period) contributions dominate over high-frequency (low period) contributions. The range in power scaling exponents indicates that abrupt changes in shoreline position are less common than gradual changes over long distances (Malamud and Turcotte, 1999).
Download or read book Extreme Events and Natural Hazards written by A. Surjalal Sharma and published by John Wiley & Sons. This book was released on 2013-05-08 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 196. Extreme Events and Natural Hazards: The Complexity Perspective examines recent developments in complexity science that provide a new approach to understanding extreme events. This understanding is critical to the development of strategies for the prediction of natural hazards and mitigation of their adverse consequences. The volume is a comprehensive collection of current developments in the understanding of extreme events. The following critical areas are highlighted: understanding extreme events, natural hazard prediction and development of mitigation strategies, recent developments in complexity science, global change and how it relates to extreme events, and policy sciences and perspective. With its overarching theme, Extreme Events and Natural Hazards will be of interest and relevance to scientists interested in nonlinear geophysics, natural hazards, atmospheric science, hydrology, oceanography, tectonics, and space weather.
Download or read book Using Modern Photogrammetric Techniques to Map Historical Shorelines and Analyze Shoreline Change Rates Case Study on Bodie Island North Carolina written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficacy of coastal development regulations in North Carolina is dependent on accurately calculated shoreline erosion rates. North Carolina's current methodology for regulatory erosion rate calculation does not take advantage of emerging GIS, photogrammetric, and engineering technologies. Traditionally, historical shoreline positions from a database created in the 1970s have been coupled with a modern shoreline position to calculate erosion rates. The photos from which these historical shorelines come were subject to errors of tilt, variable scale, lens distortion, and relief displacement. Most of these errors could be removed using modern photogrammetric methods. In this study, an effort was made to acquire and rectify, using digital image processing, prints of the original historical photography for Bodie Island, North Carolina. The photography was rectified using the latest available desktop photogrammetry technology. Digitized shorelines were then compared to shorelines of similar date created without the benefit of this modern technology. Uncertainty associated with shoreline positions was documented throughout the process. It was found that the newly created shorelines were significantly different than their counterparts created with analog means. Many factors caused this difference, including: choice of basemaps, number of tie points between photos, quality of ground control points, method of photo correction, and shoreline delineation technique. Using both linear regression and the endpoint method, a number of erosion rates were calculated with the available shorelines. Despite the differences in position of shorelines of the same date, some of the calculated erosion rates were not significantly different. Specifically, the rate found using all available shorelines prior to this study was very similar to the rate found using all shorelines created in this study. As a result of this and other factors, it was concluded that a complete reproduction of North.
Download or read book GIS based Analysis of Coastal Lidar Time Series written by Eric Hardin and published by Springer. This book was released on 2014-09-12 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SpringerBrief presents the principles, methods, and workflows for processing and analyzing coastal LiDAR data time-series. Robust methods for computing high resolution digital elevation models (DEMs) are introduced as well as raster-based metrics for assessment of topographic change. An innovative approach to feature extraction and measurement of feature migration is followed by methods for estimating volume change and sand redistribution mapping. Simple methods for potential storm impacts and inundation pattern analysis are also covered, along with visualization techniques to support analysis of coastal terrain feature and surface dynamics. Hands-on examples in GRASS GIS and python scripts are provided for each type of analysis and visualization using public LiDAR data time-series. GIS-based Analysis of Coastal Lidar Time-Series is ideal for professors and researchers in GIS and earth sciences. Advanced-level students interested in computer applications and engineering will also find this brief a valuable resource.
Download or read book Analyzing Estuarine Shoreline Change in Coastal North Carolina written by Lisa Cowart and published by . This book was released on 2009 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: With continued climate change, sea-level rise, and coastal development, concern about shoreline dynamics has expanded beyond oceanfront areas to encompass more protected coastal water bodies, such as estuaries. Because estuaries are critically important ecosystems, understanding coastline changes in these areas is necessary for evaluating resource risks. Throughout the recent decades various methods have been developed to calculate shoreline change and multiple parameters have been hypothesized to correlate with estuarine erosion, including fetch, wave energy, elevation, and vegetation. A transect-based approach is commonly used to quantify shoreline change on linear (i.e., ocean) shorelines; however, due to the complex morphology of the estuarine environments, a point-based approach was developed and applied in this study. Shoreline-change rates and additional parameters (i.e., wave energy and shoreline composition) were determined using 1958 and 1998 aerial photography and available datasets. From these data the average shoreline change of Cedar Island, NC is determined to be -0.24 m yr−1, with 88% of the shoreline eroding. Of the parameters analyzed, shoreline composition appears to have an important control on shoreline erosion along Cedar Island, whereas wave energy is not significantly correlated with shoreline-change rates. The point-based approach was applied to the trunk of the Neuse River Estuary to analyze parameters associated with estuarine erosion at two contrasting scales, regional (whole estuary) and local (estuary partitioned into 8 sections, based on orientation and exposure). With a mean shoreline-change rate of -0.58 m yr−1, the majority (93%) of the Neuse River Estuary study area is eroding. Although linear regression analysis at the regional scale did not find significant correlations between shoreline change and the parameters analyzed, trends were determined at the local scale. Local-scale analysis determined higher erosion rates, higher elevation, and lower exposure and fetch up-estuary. Erosion rates, fetch, and wave exposure increase, while elevation decreases moving eastward, down-estuary. The general trends found at the local scale highlight the importance of the spatial distribution on shoreline-change rates and parameters analyzed within a complex estuarine system, like the Neuse River Estuary. Linear regression analysis between mean fetch and mean shoreline-change rates at the Local Scale determined an equation to predict shoreline-change rates. Predicted shoreline-change rates overestimate erosion on extremely high fetch shorelines and underestimate erosion on shorelines classified as sediment bank. Overall, the model is conservative in predicting shoreline-change rates by underestimating erosion and accretion within the Neuse River Estuary. Further analysis of mean fetch by specific vegetation type may offer additional insight into the influencing forces on estuarine shoreline change.
Download or read book Using Modern Photogrammetric Techniques to Map Historical Shorelines and Analyze Shoreline Change Rates written by Jason Michael Zink and published by . This book was released on 2002 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: shoreline, aerial photography, GIS, erosion rates.
Download or read book Tide and Time written by Justin Cook and published by . This book was released on 2021-05-15 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tide and Time is a photojournalism and reporting project by Justin Cook in collaboration with Southerly Magazine and The Pulitzer Center on Crisis Reporting's Connected Coastlines Initiative? that documents the accelerating effects of climate change and erosion on North Carolina's Outer Banks. The work focuses on a tiny historic cemetery that is slowly washing into the Pamlico Sound.Through portraits, landscapes, aerial images, and interviews the work documents the locals trying to preserve the cemetery, the eroding marsh ecosystem around it, and Jean Hooper, 85, for whom the cemetery is sacred ground, and still wants to be buried there beside her husband and grandparents even if the sea eventually takes her bones. Justin also has a possible family connection to this story: His late grandfather was from the Outer Banks and the preservationists discovered that they share a distant ancestor who was once buried there, but years ago a storm sucked her casket into the Pamlico Sound.A decades-long erosion study and other research by prominent North Carolina sea level rise scientists informs the science in this project, and my work visually illustrates this science through the slow creep of climate change in the lives of ordinary people, and translates the science into a visual and emotional language to which the average person can relate. Tide and Time investigates the psychological impacts of climate change, particularly 'solastalgia,' or a sense of homesickness and loss that some Outer Banks locals feel while still at home as climate change renders their home unfamiliar.
Download or read book The Outer Banks of North Carolina written by Robert Dolan and published by . This book was released on 1985 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Shorezone Topography Along the Outer Banks North Carolina written by Nina Anne Fisher and published by . This book was released on 1982 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two beach profile data sets covering a 71 km reach of the Outer Banks, North Carolina, were examined in order to document large-scale topographic organization of the shorezone and relate this organization to other beach parameters. The earliest profiles (1937) were surveyed during the period of initial man-made dune stabilization by the Civilian Conservation Corps. A 1976 set comprises profiles that have been adjusting to the presence of these stabilized dunes for almost forty years. Four supplementary data sets - alongshore variations in active beach width, storm wave energy, sediment size and shoreline dynamics - document factors potentially related to shorezone topographic variation. Principal components analysis was used to reduce the topographic variation of the beach profiles into a few major definable and independent sources. The weightings for each principal component and the variables from the four supplementary data sets were further analyzed with spectral analysis so that significant alongshore periodicities could be identified. Cross-spectral analysis was then performed on pairs of variables to determine the amount of alongshore covariance.
Download or read book Man s Impact on the Outer Banks of North Carolina written by Robert Dolan and published by . This book was released on 1972 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tracings: 60.19, 94.49.
Download or read book Shoreline Changes at Kill Devil Hills and Kitty Hawk North Carolina written by Caroline Johnson Bellis and published by . This book was released on 1985 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tide and Time written by Justin Cook and published by . This book was released on 2021-09-10 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tide and Time is a photojournalism and reporting project by Justin Cook in collaboration with Southerly Magazine and The Pulitzer Center on Crisis Reporting's Connected Coastlines Initiative? that documents the accelerating effects of climate change and erosion on North Carolina's Outer Banks. The work focuses on a tiny historic cemetery that is slowly washing into the Pamlico Sound. Through portraits, landscapes, aerial images, and interviews the work documents the locals trying to preserve the cemetery, the eroding marsh ecosystem around it, and Jean Hooper, 85, for whom the cemetery is sacred ground, and still wants to be buried there beside her husband and grandparents even if the sea eventually takes her bones. Justin also has a possible family connection to this story: His late grandfather was from the Outer Banks and the preservationists discovered that they share a distant ancestor who was once buried there, but years ago a storm sucked her casket into the Pamlico Sound. A decades-long erosion study and other research by prominent North Carolina sea level rise scientists informs the science in this project, and my work visually illustrates this science through the slow creep of climate change in the lives of ordinary people, and translates the science into a visual and emotional language to which the average person can relate. Tide and Time investigates the psychological impacts of climate change, particularly 'solastalgia,' or a sense of homesickness and loss that some Outer Banks locals feel while still at home as climate change renders their home unfamiliar.
Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Download or read book Ribbon of Sand written by John Alexander and published by Algonquin Books. This book was released on 1992-05-01 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind, currents, tides, and sand. Kingsnakes and rice rats. The disappearance of the Lost Colony, the raids of the pirate Blackbeard, and the Wright brothers' first attempts at flight. The Outer Banks is a place like no other.
Download or read book Sand and Gravel Spits written by Giovanni Randazzo and published by Springer. This book was released on 2015-04-16 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book draws together a series of studies of spit geomorphology and temporal evolution from around the world. The volume offers some unique insights into how these landforms are examined scientifically and how we as humans impact them, offering a global perspective on spit genesis and evolution. Spits are unique natural environments whose evolution is linked to the adjacent coast and near shore morphology, sediment supply, coastal dynamics and sea-level change. Over the past century, Global Mean Sea Level (GMSL) has risen by 10 to 20 centimetres and many coastal spits represent the first sentinel against coastal submersion. Scientific research indicates that sea levels worldwide have been rising at a rate of 3.5 millimetres per year since the early 1990s, roughly twice the average speed of the preceding 80 years. This trend, linked to global warming will undoubtedly cause major changes in spit morphology. Spits are highly mobile coastal landforms that respond rapidly to environmental change. They therefore represent a signature of past environmental change and provide a landform indicator of climate change.
Download or read book An Evaluation of Hurricane induced Erosion Along the North Carolina Coast Using Airborne Lidar Surveys written by Andrew W. Meridith and published by . This book was released on 1999 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relationships Between Nearshore Processes and Beach Changes Along the Outer Banks of North Carolina written by Robert Dolan and published by . This book was released on 1965 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
