Filters: Tags: Digital Elevation/Terrain Model (DEM) (X)
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A bare earth Digital Elevation Model (DEM) created from 2013 LiDAR LAS files for Wilson and Karnes counties in Texas. LiDAR data collection was funded by the Texas Water Development Board. LiDAR LAS files were acquired from Texas Natural Resources Information System (TNRIS). The DEM is a dataset that depicts the topography of the bare earth surface (i.e. surface minus vegetation, buildings, powerlines, etc). This dataset was developled to be used in conjunction with the DSM to create a vegetation height surface (nDSM). The LAS point cloud was filtered to ground points only and the mean z value was calculated. A Digital Surface Model (DSM) created from 2013 LiDAR LAS files for Wilson and Karnes counties in Texas....
This dataset provides a digital elevation model mosaic derived from airborne lidar data acquired in 2018 from September 2–3 over eight separate areas along Alaska's Montague Island coast, between Prince William Sound and the Gulf of Alaska.
Categories: Data;
Tags: Alaska,
Coastal Landforms,
Coastal Processes,
Digital Elevation/Terrain Model (DEM),
Earth Science,
This dataset provides four digital elevation models derived from airborne lidar data acquired over four separate areas along and adjacent to the Fairweather Fault along the remote Gulf of Alaska coast within Glacier Bay National Park. In 1958, the Fairweather Fault in southeast Alaska ruptured over 260 km between Yakutat Bay and Cross Sound, producing the magnitude 7.8 Lituya Bay earthquake. To better understand the extent of surface rupture and identify sites to investigate for evidence of past earthquakes, the USGS Alaska Science Center collaborated with the National Park Service, the Army Corps of Engineers' Cold Regions Research and Engineering Laboratory (CRREL), and the National Center for Airborne Lidar Mapping...
Categories: Data;
Tags: Alaska,
Coastal Landforms,
Coastal Processes,
Digital Elevation/Terrain Model (DEM),
Earth Science,
This dataset provides one orthorectified aerial photo mosaic and one digital elevation model derived from airborne fodar data acquired in 2021 on August 31 over the Totatlanika River in central Alaska. The term "fodar" is a portmanteau of foto and lidar, coined by Matt Nolan, which describes a method of quantifying the color and elevation of Earth's surface via airborne small-format digital camera photography.
Categories: Data;
Tags: Alaska,
Alaska Range,
Buzzard Creek,
California Creek,
Digital Elevation/Terrain Model (DEM),
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