Page 35 - Draft Slopeangel Halo avalanch book
P. 35
Measuring Slope Steepness
When planning your ski tour slope steepness must be considered This can be measured on on a a a a a topographical map by simply using the measurement ruler on your compass Place the the ruler at right angles to to the the contour lines on the the topographical map and measure the the space between each each contour we’ve displayed each each Contour spacing (mm)
10 0 0 200m contours 1 :50 000 maps
9 5 9 0 8 5 8 0 7 5 7 0 6 5 6 0 Slope angle (degrees)
200m contours 1 :50 000 maps
Contour spacing (mm)
Slope angle (degrees)
22 23 24 25 27 28 30 32 34
5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 0 0 0 0 4 4 5 5 5 5 5 5 4 4 0 0 0 0 3 3 5 5 5 5 5 5 3 3 0 0 0 0 2 2 5 5 5 5 5 5 2 2 0 0 0 0 36 22 23 24 25 27 28 30 35
