East
Distance (m)
West
0
10
20
30
1994 Fill
1994 Fill
1
2
3
Trench Excavated
Scattered Non-metallic
4
and Filled in 1994
Objects or Rocks?
5
0
20
40
60
80
Figure 10. 400-MHz GPR profile recorded along transect 16 in June of 1995. A
reflection from the original ground surface (before fill) is clearly visible from
stations 24 to 35 m. Signal attenuation resulting from trench excavation and fill is
apparent near station 20 m.
Figure 11. Contoured maps of the EMI
anomalies in the area of T-1 and T-2
east of the CRREL baseline. The heavy
black lines show the locations of GPR
profiles and interpretative cross-
sections. Top--0700 mV (contour in-
terval = 50 mV); bottom--20120 mV
(contour interval =20 mV).
10
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