The
results of the comparison between the two DEMs were very similar yet they were
somewhat different from one another. The maximum slope range was higher in SRTM
than LIDAR. The possible reason why SRTM has higher value in the maximum slope
is the two synthetic aperture radars that were utilized for this scan of the
watershed. LIDAR had a higher average slope than SRTM which means that the
pulsed laser is able to penetrate the vegetation of the study area and get a
better measurement of the slope of the watershed.
To
compare the two DEMs I used the slope tool on the SRTM Raster to allow me to note
the change in the z-value of the raster image. Once the slope tool was used,
the Zonal Statistic tool was used to calculate the average and maximum degrees that
both DEMs had. Also, I open up the Data Properties of both DEMs and noted the different
cell size of both DEMs.
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