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Table 2 Elevation precision of topographic map derived pre-earthquake DEM

From: Co-seismic landslide topographic analysis based on multi-temporal DEM—A case study of the Wenchuan earthquake

No. Longitude(°) Latitude(°) GPS_Elevation(m) DEM_Elevation(m) Error(m)
1 106.023 32.9621 616.749 620.08234 3.3333364
2 105.457 32.0184 678.851 682.28235 3.4313486
3 103.435 32.9307 3587.7 3583.9824 -3.7175781
4 102.501 32.7856 3471.93 3462.3823 -9.5476758
5 104.571 32.4053 1312.77 1312.4823 -0.2877002
6 104.831 32.1819 1068.06 1064.7823 -3.2776514
7 104.444 31.8019 1002.18 1002.1824 0.0023731
8 103.166 32.075 2957.83 2948.6824 -9.1476269
9 104.782 31.4865 489.381 484.88232 -4.4986758
10 104.187 31.3529 571.82 571.2334 -0.5866016
11 104.441 31.1571 483.26 484.68231 1.422312
12 104.077 30.732 490.226 494.68231 4.456312
13 103.41 30.415 559.666 550.9823 -8.6837002
14 106.034 30.8042 295.216 299.77786 4.5618625
  1. The mean elevation error is calculated to be ±4.1 m.