Loudoun Ridge Feature Protection

Name: Loudoun Ridge Feature Protection
Creator: Loudoun County GIS
License: 暂无描述

UVA Open Data2026-03-28 收录

下载链接：

https://data-uvalibrary.opendata.arcgis.com/datasets/LoudounGIS::loudoun-ridge-feature-protection

下载链接

链接失效反馈

官方服务：

资源简介：

<p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-family:"Avenir Light", Verdana, Geneva, sans-serif;'><a href='https://logis.loudoun.gov/Loudoun/metadata/1993_mtnside.htm' target='_blank' rel='nofollow ugc noopener noreferrer'>More Metadata</a> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>The Ridge Feature Protection layer was developed using best available elevation data and the Geomorphon Landforms geoprocessing tool available thru Esri ArcGIS Pro software. The Geomorphon Landforms geoprocessing tool is based on a powerful algorithm that combines elevation differences and visibility concepts to classify terrain into landform types. A geomorphon is a representation of landscape based on elevation differences within the surrounding area of a target cell. <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>The following parameters and data refinements were used for the Geomorphon Landforms geoprocessing tool in order to provide a general representation of primary and other prominent ridge features in Loudoun County.<p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>Parameters:<p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>[Flat Angle Threshold = 3 degrees, Search Distance = 2,640 feet (1/2 mile), and Skip Distance = 660 feet (1/8 mile), Landform Values = Peak, Ridge OR Shoulder] <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>Data Refinements:<ul><li>All features outside of the MOD were removed.</li><li>All features within the MOD but below the critical elevation defined within the MOD were removed.</li><li>All features within MOD less than 20 acres in size and not contiguous with the County’s boundary were removed.</li><li>All features within MOD not contiguous with a primary ridge feature were removed.</li><li>All features within MOD contiguous with a primary ridge feature but 400 feet or more in elevation below the primary ridge feature were removed.</li></ul><p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>The Ridge Feature Protection layer is intended to be used only as a reference. Better site-specific elevation data may improve the precision and accuracy of the Ridge Features layer. To assure that Loudoun County is using the best available elevation data, please provide the Office of Mapping and Geographic Information with information concerning any errors, omissions, or other discrepancies discovered in this data.<p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>Source Data<p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>Digital Elevation Model/DEM (~ 10 m cell size)<p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'> <p style='margin-top:0px; margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial; box-sizing:border-box; padding:0px; font-size:12px; color:rgb(0, 0, 0); font-family:"Avenir Light", Verdana, Geneva, sans-serif;'>USGS 1/3 Arc Second; 3D Elevation Program (3DEP)

提供机构：

Loudoun County GIS

5,000+

优质数据集

54 个

任务类型

进入经典数据集