Question

Table 1.18 gives the average temperature, T, at a depth d, in a borehole in Belleterre, Quebec.13 Evaluate ΔT/Δd on the the following interv

Answer 1

Table 1.18 gives the average temperature, T, at a depth d, in a borehole in Belleterre, Quebec.13 Evaluate ΔT/Δd on the the following intervals, and explain what your answers tell you about borehole temperature.

(a)

25 ≤ d ≤ 150
(b)

25 ≤ d ≤ 75
(c)

100 ≤ d ≤ 200
TABLE 1.18
d, depth (m)

25

50

75

100
T, temp (°C)

5.50

5.20

5.10

5.10
d, depth (m)

125

150

175

200
T, temp (°C)

5.30

5.50

5.75

6.00
d, depth (m)

225

250

275

300
T, temp (°C)

6.25

6.50

6.75

7.00