# DEM slope summary (generated by dem_slope.py)

DEM: Copernicus DEM GLO-30 (COG tile N61_00_E059_00, AWS public bucket, md5 0c15753d8bd0c99d05fafaa78e819443); grid 29.3 m (E) x 31.0 m (N).

## Slope/aspect at candidate sites

| site | z (m) | Horn 3x3 slope / aspect | plane r=30 m (n) | plane r=50 m (n) | plane r=100 m (n) | plane r=150 m (n) | MC sd (Horn / r50 / r100) |
|---|---|---|---|---|---|---|---|
| tent_dyatlovpass_map | 898.9 | 15.4 deg / 83 | nan (3) | 15.3 deg/83.0 (9) | 15.6 deg/85.0 (34) | 15.6 deg/84.0 (80) | 1.19 / 1.12 / 0.28 |
| tent_TL1810_office | 898.6 | 15.4 deg / 83 | nan (3) | 15.3 deg/83.0 (9) | 15.6 deg/84.0 (35) | 15.6 deg/84.0 (78) | 1.12 / 1.06 / 0.28 |
| tent_TL1810_field | 899.2 | 15.4 deg / 83 | nan (3) | 15.2 deg/84.0 (8) | 15.6 deg/85.0 (34) | 15.6 deg/84.0 (80) | 1.1 / 1.26 / 0.27 |
| tent_prosecutors_2019 | 886.4 | 16.2 deg / 77 | nan (2) | 16.4 deg/77.0 (8) | 17.0 deg/81.0 (36) | 16.4 deg/81.0 (80) | 1.18 / 1.29 / 0.25 |
| tent_borzenkov_gps_2009 | 898.0 | 17.7 deg / 86 | nan (2) | 16.9 deg/86.0 (8) | 17.1 deg/86.0 (36) | 15.9 deg/84.0 (78) | 1.14 / 1.3 / 0.26 |
| new_monument_sculpture | 911.5 | 19.5 deg / 91 | nan (3) | 19.3 deg/93.0 (9) | 17.1 deg/89.0 (35) | 15.8 deg/84.0 (78) | 1.04 / 0.94 / 0.26 |
| tent_semyashkin_2010_as_published | 824.8 | 9.5 deg / 40 | nan (2) | 9.1 deg/41.0 (8) | 8.7 deg/43.0 (37) | 8.4 deg/45.0 (80) | 1.2 / 1.22 / 0.26 |
| cedar | 643.4 | 9.5 deg / 337 | nan (2) | 9.6 deg/336.0 (9) | 10.5 deg/333.0 (36) | 10.3 deg/336.0 (76) |  /  /  |
| dyatlov | 665.2 | 9.0 deg / 6 | 10.9 (4) | 10.8 deg/358.0 (8) | 9.7 deg/8.0 (35) | 9.2 deg/9.0 (79) |  /  /  |
| slobodin | 689.0 | 9.6 deg / 58 | nan (3) | 10.2 deg/52.0 (8) | 9.8 deg/39.0 (35) | 9.3 deg/37.0 (79) |  /  /  |
| kolmogorova | 715.0 | 10.2 deg / 60 | nan (3) | 10.1 deg/60.0 (8) | 9.6 deg/52.0 (35) | 9.6 deg/50.0 (76) |  /  /  |
| den_flooring | 635.5 | 13.8 deg / 347 | nan (3) | 13.4 deg/346.0 (9) | 10.1 deg/349.0 (35) | 8.6 deg/355.0 (78) |  /  /  |
| labaz | 646.4 | 10.2 deg / 172 | 9.4 (4) | 10.3 deg/173.0 (9) | 11.0 deg/169.0 (35) | 11.4 deg/170.0 (77) |  /  /  |
| kholat_syakhl_summit_map | 1095.8 | 0.6 deg / 252 | nan (3) | 0.6 deg/303.0 (8) | 0.6 deg/298.0 (36) | 0.7 deg/278.0 (77) |  /  /  |
| kholat_syakhl_summit_dem | 1096.0 | 0.6 deg / 252 | nan (3) | 0.6 deg/252.0 (9) | 0.5 deg/254.0 (37) | 0.8 deg/232.0 (79) |  /  /  |
| pass_memorial_osm | 782.7 | 7.6 deg / 163 | 6.3 (4) | 7.4 deg/165.0 (10) | 7.2 deg/157.0 (32) | 7.3 deg/151.0 (78) |  /  /  |
| helipad_1959 | 827.6 | 5.6 deg / 137 | nan (3) | 5.7 deg/137.0 (9) | 5.9 deg/138.0 (36) | 5.9 deg/135.0 (75) |  /  /  |

## Summary

```
{
 "dem": "Copernicus DEM GLO-30 (COG tile N61_00_E059_00, AWS public bucket, md5 0c15753d8bd0c99d05fafaa78e819443)",
 "dem_grid_m": {
  "dx_east": 29.34,
  "dy_north": 30.96
 },
 "tent_used": "tent_dyatlovpass_map (TL 18.10)",
 "tent_elev_m": 898.9,
 "cedar_elev_m": 643.4,
 "tent_to_cedar_horizontal_m": 1550.8,
 "tent_to_cedar_haversine_m": 1545.4,
 "tent_to_cedar_bearing_deg": 62.3,
 "tent_to_cedar_drop_m": 255.5,
 "tent_to_cedar_mean_slope_deg": 9.4,
 "profile_max_grad25_deg": 16.1,
 "profile_max_grad100_deg": 14.4,
 "profile_first_500m_mean_slope_deg": -12.1,
 "profile_500_1000m_mean_slope_deg": -10.7,
 "profile_1000m_to_cedar_mean_slope_deg": 5.6,
 "bodies_along_line_m": {
  "kolmogorova": {
   "along_m": 897.0,
   "offset_m": -13.1,
   "from_cedar_m": 653.8,
   "elev_m": 715.0
  },
  "slobodin": {
   "along_m": 1048.0,
   "offset_m": -31.0,
   "from_cedar_m": 502.8,
   "elev_m": 689.0
  },
  "dyatlov": {
   "along_m": 1228.1,
   "offset_m": -18.5,
   "from_cedar_m": 322.7,
   "elev_m": 665.2
  },
  "den_flooring": {
   "along_m": 1483.1,
   "offset_m": 41.2,
   "from_cedar_m": 67.7,
   "elev_m": 635.5
  }
 },
 "tent_to_summit_dem_m": 766.0,
 "tent_to_summit_bearing_deg": 233.4,
 "upslope": {
  "fall_line_up": {
   "bearing_deg": 265.0,
   "rise_0_100m_deg": -17.1,
   "rise_100_200m_deg": -14.2,
   "rise_0_200m_deg": -15.6,
   "rise_200_300m_deg": -6.2,
   "max_grad25_within_200m_deg": 19.6,
   "max_grad50_within_200m_deg": 18.9,
   "elev_at_200m": 954.9
  },
  "toward_summit": {
   "bearing_deg": 233.4,
   "rise_0_100m_deg": -13.9,
   "rise_100_200m_deg": -14.9,
   "rise_0_200m_deg": -14.4,
   "rise_200_300m_deg": -17.3,
   "max_grad25_within_200m_deg": 16.8,
   "max_grad50_within_200m_deg": 16.3,
   "elev_at_200m": 950.4
  }
 },
 "noise_sigma_m": 1.5,
 "max_horn_slope_within_300m_above_tent": {
  "slope_deg": 22.7,
  "x_y_z": [
   -87.0,
   -271.0,
   940.5
  ]
 },
 "descent_corridor_horn_slope": {
  "max_deg": 21.1,
  "at_along_m": 7.0,
  "n_pixels": 330,
  "mean_deg": 11.3
 },
 "terrarium_crosscheck": {
  "tent_elev_m": 886.3,
  "profile_mean_diff_terr_minus_cop_m": -11.7,
  "profile_rms_diff_m": 11.7,
  "n": 63,
  "fall_line_slope_over_60m_deg": 14.5
 }
}
```

## Upslope profiles (positive = rising away from the tent)

### fall_line_up (bearing 265.0 deg)

| up (m) | elev (m) | grad25 | grad50 | grad100 |
|---|---|---|---|---|
| 0 | 898.9 | 15.3 | 15.1 | 15.3 |
| 25 | 906.3 | 16.7 | 16.8 | 16.0 |
| 50 | 914.1 | 17.1 | 16.9 | 17.1 |
| 75 | 921.5 | 16.3 | 17.3 | 17.8 |
| 100 | 929.6 | 19.6 | 18.8 | 18.1 |
| 125 | 938.5 | 19.3 | 18.9 | 16.9 |
| 150 | 946.7 | 14.5 | 15.1 | 14.2 |
| 175 | 951.9 | 9.4 | 9.3 | 10.9 |
| 200 | 954.9 | 6.5 | 6.7 | 8.1 |
| 225 | 957.8 | 6.8 | 6.9 | 6.8 |
| 250 | 960.9 | 7.5 | 6.9 | 6.2 |
| 275 | 963.8 | 5.4 | 5.4 | 4.9 |
| 300 | 965.7 | 2.4 | 2.9 | 3.4 |

### toward_summit (bearing 233.4 deg)

| up (m) | elev (m) | grad25 | grad50 | grad100 |
|---|---|---|---|---|
| 0 | 898.9 | 14.1 | 13.4 | 13.1 |
| 25 | 905.2 | 12.9 | 13.6 | 13.4 |
| 50 | 911.1 | 13.8 | 13.4 | 13.9 |
| 75 | 917.1 | 13.9 | 14.1 | 14.6 |
| 100 | 923.7 | 15.7 | 15.8 | 15.2 |
| 125 | 931.3 | 16.8 | 16.3 | 15.6 |
| 150 | 938.3 | 15.4 | 15.4 | 14.9 |
| 175 | 945.0 | 13.6 | 13.5 | 14.3 |
| 200 | 950.4 | 12.5 | 13.2 | 14.9 |
| 225 | 956.7 | 16.2 | 16.2 | 15.7 |
| 250 | 964.9 | 18.7 | 18.2 | 17.3 |
| 275 | 973.2 | 18.6 | 18.4 | 18.3 |
| 300 | 981.5 | 18.0 | 18.4 | 17.4 |

## Profile tent -> cedar (every 25 m)

| dist (m) | elev (m) | grad25 | grad50 | grad100 | segment |
|---|---|---|---|---|---|
| 0 | 898.9 | 14.8 | 14.3 | 13.9 | 13.5 |
| 25 | 892.9 | 13.0 | 13.3 | 13.7 | 12.8 |
| 50 | 887.2 | 13.2 | 13.0 | 12.8 | 13.1 |
| 75 | 881.4 | 12.2 | 12.2 | 12.5 | 11.5 |
| 100 | 876.3 | 11.7 | 12.0 | 13.1 | 12.6 |
| 125 | 870.7 | 13.7 | 14.0 | 13.7 | 15.2 |
| 150 | 863.9 | 16.1 | 15.3 | 14.3 | 15.2 |
| 175 | 857.1 | 14.3 | 14.7 | 14.4 | 14.4 |
| 200 | 850.7 | 13.5 | 13.5 | 14.0 | 12.6 |
| 225 | 845.1 | 13.1 | 13.2 | 13.7 | 13.7 |
| 250 | 839.0 | 14.1 | 13.9 | 13.5 | 14.1 |
| 275 | 832.7 | 13.9 | 13.8 | 12.5 | 13.5 |
| 300 | 826.7 | 11.1 | 11.2 | 11.5 | 8.9 |
| 325 | 822.8 | 8.8 | 9.2 | 10.4 | 9.5 |
| 350 | 818.6 | 9.9 | 9.7 | 9.6 | 9.8 |
| 375 | 814.3 | 10.0 | 9.9 | 9.9 | 10.2 |
| 400 | 809.8 | 9.7 | 10.0 | 10.0 | 9.8 |
| 425 | 805.5 | 10.5 | 10.1 | 10.1 | 10.2 |
| 450 | 801.0 | 9.9 | 10.1 | 10.2 | 10.2 |
| 475 | 796.5 | 10.4 | 10.4 | 10.8 | 10.6 |
| 500 | 791.8 | 11.5 | 11.4 | 11.1 | 12.2 |
| 525 | 786.4 | 12.0 | 11.8 | 11.5 | 11.5 |
| 550 | 781.3 | 11.3 | 11.6 | 11.8 | 11.5 |
| 575 | 776.2 | 11.9 | 11.8 | 12.0 | 12.0 |
| 600 | 770.9 | 12.4 | 12.4 | 11.9 | 12.8 |
| 625 | 765.2 | 12.1 | 12.1 | 12.0 | 11.3 |
| 650 | 760.2 | 11.4 | 11.7 | 12.2 | 12.0 |
| 675 | 754.9 | 12.6 | 12.3 | 11.7 | 12.6 |
| 700 | 749.3 | 11.5 | 11.7 | 11.6 | 10.9 |
| 725 | 744.5 | 11.1 | 10.9 | 11.0 | 10.9 |
| 750 | 739.7 | 10.6 | 10.3 | 10.2 | 9.8 |
| 775 | 735.4 | 9.0 | 9.5 | 9.7 | 9.1 |
| 800 | 731.4 | 9.1 | 9.1 | 9.3 | 9.3 |
| 825 | 727.3 | 9.2 | 9.1 | 9.2 | 8.9 |
| 850 | 723.4 | 8.4 | 9.3 | 9.7 | 9.8 |
| 875 | 719.1 | 11.4 | 10.3 | 9.7 | 10.9 |
| 900 | 714.3 | 9.6 | 10.0 | 9.8 | 9.1 |
| 925 | 710.3 | 9.1 | 9.2 | 9.7 | 9.3 |
| 950 | 706.2 | 9.7 | 9.4 | 9.5 | 9.5 |
| 975 | 702.0 | 9.5 | 9.8 | 9.8 | 10.0 |
| 1000 | 697.6 | 10.4 | 10.1 | 9.9 | 10.2 |
| 1025 | 693.1 | 9.9 | 10.0 | 9.8 | 9.8 |
| 1050 | 688.8 | 9.9 | 9.5 | 9.6 | 9.1 |
| 1075 | 684.8 | 8.1 | 9.1 | 9.8 | 9.1 |
| 1100 | 680.8 | 10.9 | 10.0 | 9.7 | 11.1 |
| 1125 | 675.9 | 9.3 | 10.2 | 9.4 | 9.5 |
| 1150 | 671.7 | 10.2 | 8.7 | 9.2 | 7.7 |
| 1175 | 668.3 | 7.3 | 8.2 | 7.9 | 8.4 |
| 1200 | 664.6 | 7.4 | 7.1 | 6.4 | 5.9 |
| 1225 | 662.0 | 3.9 | 4.7 | 5.9 | 3.4 |
| 1250 | 660.5 | 5.5 | 4.7 | 4.7 | 5.7 |
| 1275 | 658.0 | 4.3 | 4.8 | 4.1 | 3.9 |
| 1300 | 656.3 | 3.8 | 3.5 | 4.0 | 3.2 |
| 1325 | 654.9 | 2.9 | 3.1 | 3.6 | 3.0 |
| 1350 | 653.6 | 4.2 | 3.6 | 3.1 | 4.3 |
| 1375 | 651.7 | 2.9 | 3.1 | 2.5 | 2.1 |
| 1400 | 650.8 | 1.0 | 1.3 | 2.7 | 0.5 |
| 1425 | 650.6 | 2.6 | 2.3 | 2.8 | 4.1 |
| 1450 | 648.8 | 3.5 | 4.3 | 3.6 | 4.6 |
| 1475 | 646.8 | 5.7 | 5.0 | 4.0 | 5.5 |
| 1500 | 644.4 | 4.0 | 3.8 | 3.1 | 2.1 |
| 1525 | 643.5 | 0.7 | 1.2 | 2.2 | 0.2 |
| 1550 | 643.4 | 0.7 | 0.7 | 0.8 |  |