| snippet:
|
High resolution elevation surfaces created from the 2020 Northern Shenandoah lidar collection over Harrisonburg, VA. |
| summary:
|
High resolution elevation surfaces created from the 2020 Northern Shenandoah lidar collection over Harrisonburg, VA. |
| accessInformation:
|
U.S. Geological Survey, City of Harrisonburg |
| thumbnail:
|
thumbnail/thumbnail.png |
| maxScale:
|
4504.630596252355 |
| typeKeywords:
|
["Data","Service","Image Service","ArcGIS Server"] |
| description:
|
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dynamic layer provides elevation data from the 2020 Northern Shenandoah lidar collection, which took place between 11/29/2020 and 1/12/2021. Different visualizations can be created through the use of raster functions applied to the source data. The surfaces available for raster functions include a high-resolution digital elevation model (DEM) and a digital surface model (DSM) to model bare earth or above ground surfaces.</SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-size:14pt">Layer Applications</SPAN></P><P><SPAN STYLE="font-weight:bold;">Use for Visualization: </SPAN><SPAN>Yes, this is the primary layer use. Bare earth and above ground surfaces can be modeled using the different raster functions available in the symbology pane.</SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-weight:bold;">Use for Analysis: </SPAN><SPAN>No, this layer should not be used for analysis workflows.</SPAN></P><P><SPAN /></P><P><SPAN STYLE="font-size:14pt">How was this made?</SPAN></P><P><SPAN>Lidar point clouds were processed in ArcGIS Pro to generate a DEM and DSM with a cell size of 0.5 meters. The raster surfaces were then loaded into a mosaic dataset built using a source/derived management style. Then, raster function template files were generated and applied to the rasters, allowing the hillshade surfaces to be created. These surfaces are highly accurate in terms of spatial location and depicting the earth's surface at the time of collection.</SPAN></P><P><SPAN STYLE="font-size:14pt">Want to learn more?</SPAN></P><P><A href="https://www.usgs.gov/faqs/what-lidar-data-and-where-can-i-download-it" STYLE="text-decoration:underline;"><SPAN>USGS What is Lidar?</SPAN></A></P><P><A href="https://www.usgs.gov/news/science-snippet/earthword-lidar" STYLE="text-decoration:underline;"><SPAN>USGS EarthWord</SPAN></A></P><P><SPAN /></P></DIV></DIV></DIV> |
| licenseInfo:
|
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Every reasonable effort has been made to assure the accuracy of this dataset and associated maps. The City of Harrisonburg assumes no liability arising from use of these datasets or maps created using these datasets. THE DATASETS ARE PROVIDED WITHOUT WARRANTY OF ANY KIND, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Any errors or omissions should be reported to the GIS Administrator of the City of Harrisonburg, Department of Information Technology.</SPAN></P></DIV></DIV> |
| catalogPath:
|
|
| title:
|
2020_Lidar Terrain |
| type:
|
Image Service |
| url:
|
https://gis.harrisonburgva.gov/image |
| tags:
|
["2020","elevation","dem","dsm","terrain","lidar"] |
| culture:
|
en-US |
| name:
|
2020_Lidar_Terrain |
| guid:
|
|
| minScale:
|
288296.3581601507 |
| spatialReference:
|
NAD_1983_2011_UTM_Zone_17N |