Overland erosion due to freezethaw cycling
7
3
RESULTS
The soil moisture content and time-weighted runoff emerging from the bins
are given in Figure 5 for all tests (experiments). Test 4 had an anomalously low
soil moisture relative to the other tests in its series, and the FT bin had somewhat
lower soil moisture than the C bin in tests 1 and 15. Flow rates in the FT bin were
low relative to the C bin in tests 10, 11, and 12. These differences are conserva-
tive in that they favor reduced erosion in the FT bins relative to the C bins, but
generally more erosion occurred in the FT bin.
40
32
24
C
16
FT
8
0
0
2
4
6
8
10
12
14
16
18
20
3
C
2.5
2
FT
1.5
1
0.5
0
0
2
4
6
8
10
12
14
16
18
20
Test #
Figure 5. Soil moisture and discharge, Q; low-moisture series is tests 17;
intermediate-moisture series is tests 813; high-moisture series is tests
1419. Note that test 3 failed and test 4 replaced it.
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