Vertical Differencing [ Video Tutorial ]

Slumgullion Landslide, Colorado (July 7, 2015)
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Overview

NCALM logo Airborne lidar was collected by NCALM for PI Dr. Hyongki Lee (University of Houston) over the Slumgullion Landslide, Colorado. This dataset includes data from survey two of three in the collection. Three surveys were conducted on July 3, 7, 10, 2015 (DOY 184, 188, 191).

The Slumgullion Earthflow, a slow moving landslide, crawled down the valley about 700 years ago creating the 4 miles (6.4 km) long and 2,000 feet (610 m) wide mass. The earthflow lies a few miles south east of Lake City. The landmark site covers 1,291 acres (522 ha) and is owned by the US Forest Service and the Bureau of Land Management. It is "a striking example of mass wasting (the movement of large masses of earth material)." Lake San Cristobal was dammed by the earthflow. The earthflow has been moving continuously for about 300 years over older stable rock. It moves at a rate of about 7 meters (23 feet) per year.
Slumgullion Earthflow. (2017, April 12). In Wikipedia, The Free Encyclopedia. Retrieved 16:39, June 29, 2017, from https://en.wikipedia.org/w/index.php?title=Slumgullion_Earthflow&oldid=775038032


Publications associated with this dataset can be found at NCALM's Data Tracking Center

Reference Dataset
Total points: pts
Survey Area: km2
Point Density: pts/m2
Compare Dataset  
Total points: pts
Survey Area: km2
Point Density: pts/m2
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1. Vertical Differencing Datasets and Coordinate System  

Select a dataset for vertical differencing:
  Reference dataset:
  Compare dataset:  
Dataset:
Survey Date:
Horizontal Coordinates:
Vertical Coordinates:
Units:
Data Selection Coordinates (Select an area on map)
  Manually enter selection coordinates (in the horizontal coordinate system listed above)  

  Choose Return Classification    
  Ground

2. DEM Generation (TIN)  

  Grid Resolution (Default = 1.0 meter)
  Max. triangle size (Default 50 units)

3. Error handling (optional)  

  Estimate mean uncertainty using geostatistical approach.  
  User-defined Minimum Level of Detection  

4. Visualization  

  Generate additional hillshade images from DEMs for reference and compare datasets.

Altitude of the light:  (in range: [0-90] degrees)
Azimuth of the light:  (in range: [0-360] degrees)

Job Description & Notification

These options allow users to describe and keep track of their jobs. Information entered below is saved along with other job parameters in your personal myOpenTopo dashboard (available only to registered OpenTopography users).

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Data Citation     |     Use License: CC BY 4.0