SOCAL_INTERSECTS_LT - Long-Term Transect-Shoreline Intersection Points for Southern California Generated to Calculate Shoreline Change Rates

Rates of long-term and short-term shoreline change were generated in a GIS using the Digital Shoreline Analysis System (DSAS) version 3.0; An ArcGIS extension for calculating shoreline change: U.S. Geological Survey Open-File Report 2005-1304, Thieler, E.R., Himmelstoss, E.A., Zichichi, J.L., and Miller, T.M. The extension is designed to efficiently lead a user through the major steps of shoreline change analysis. This extension to ArcGIS contains three main components that define a baseline, generate orthogonal transects at a user-defined separation along the coast, and calculate rates of change (linear regression, endpoint rate, average of rates, average of endpoints, jackknife).

本数据集通过地理信息系统（Geographic Information System, GIS），采用数字海岸线分析系统（Digital Shoreline Analysis System, DSAS）3.0版本生成长、短期海岸线变化速率；该系统为用于计算海岸线变化的ArcGIS扩展模块，相关参考文献为美国地质调查局公开文件报告2005-1304，作者包括Thieler, E.R.、Himmelstoss, E.A.、Zichichi, J.L.与Miller, T.M.。
该扩展模块旨在协助用户高效完成海岸线变化分析的核心流程步骤。
此ArcGIS扩展模块包含三大核心功能：一是定义基线，二是沿海岸以用户自定义间隔生成正交断面，三是计算变化速率（涵盖线性回归、端点速率法、平均速率法、平均端点法以及刀切法）。