Geoscience Reference
In-Depth Information
50
Lysimeter 1
Lysimeter 2
0
-50
-100
-150
1-Mar
1-May
1-Jul
1-Sep
Date
(a)
30
Lysimeter 1
Lysimeter 2
25
20
15
10
1-Mar
1-May
1-Jul
1-Sep
Date
(b)
fIGURe 25.4
Changes in water content (a) and according ground-penetrating radar (GPR) reflection times
(b) over the 6-month investigation period.
Changes in Travel Time (ns)
-12
-9
-6
-3
0
0
-0.03
-0.06
-0.09
-0.12
fIGURe 25.5
Correlation between changes in water content and reflection time.
