Application of the AMBUR R package for spatio-temporal analysis of shoreline change: Jekyll Island, Georgia, USA

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• 作者：Chester W. Jackson Jr.^a ; ^b ; ^{cjackson@georgiasouthern.edu} ; Clark R. Alexander^b ; ^c ; ^{clark.alexander@skio.usg.edu} ; David M. Bush^d ; ^{dbush@westga.edu}
• 关键词：Coastline ; GIS ; Program ; Movement ; Forecast ; Erosion ; Rate
• 刊名：Computers and Geosciences
• 出版年：2012
• 期刊代码：16_00983004
• 类别：ear
• 出版时间：April, 2012
• 卷：41
• 期：Complete
• 页码：199-207
• 文件大小：954 K

摘要

The AMBUR (Analyzing Moving Boundaries Using R) package for the R software environment provides a collection of functions for assisting with analyzing and visualizing historical shoreline change. The package allows import and export of geospatial data in ESRI shapefile format, which is compatible with most commercial and open-source GIS software. The 鈥渂aseline and transect鈥?method is the primary technique used to quantify distances and rates of shoreline movement, and to detect classification changes across time. Along with the traditional 鈥減erpendicular鈥?transect method, two new transect methods, 鈥渘ear鈥?and 鈥渇iltered,鈥?assist with quantifying changes along curved shorelines that are problematic for perpendicular transect methods. Output from the analyses includes data tables, graphics, and geospatial data, which are useful in rapidly assessing trends and potential errors in the dataset. A forecasting function also allows the user to estimate the future location of the shoreline and store the results in a shapefile. Other utilities and tools provided in the package assist with preparing and manipulating geospatial data, error checking, and generating supporting graphics and shapefiles. The package can be customized to perform additional statistical, graphical, and geospatial functions, and, it is capable of analyzing the movement of any boundary (e.g., shorelines, glacier terminus, fire edge, and marine and terrestrial ecozones).