.gif)
Heat-flow Results
| Heat-flow reading |
Temp, gradient in sediment (C/cm) |
Thermal conductivity of sediment (cal/cm.sec.C) |
HEAT-FLOW (microcalories per cm2 per second) |
| A |
0.00003 ± 0.00003 |
0.00655 ± 0.00003 |
5.4 ± 0.2 |
| B |
0.00193 ± 0.00002 |
0.00661 ± 0.00003 |
9.2 ± 0.1 |
| C |
0.00100 ± 0.00004 |
0.00716 ± 0.00003 |
7.6 ± 0.3 |
On the whole the floor of McMurdo Sound seems to be rocky, but small pockets of mud do exist. Their presence seems to be due to the following factors:
| (a) | The presence of an underwater cliff. Silt would presumably accumulate near its foot. Holes 8 and 19 seem to be at the foot of such a cliff. |
| (b) | The end of a nearby glacier. Silt will accumulate near the melting end of a glacier. Holes 8 and 11 were both within 3 miles of the Barne glacier. I was not able to investigate the ends of the Ferrar and Blue glaciers as my transport and accommodation were
page 21.gif)
were urgently required for ferrying supplies to Lake Vanda, and the heat-flow programme had to be terminated. |
Thus there are many places, as yet unexplored, in this area where future heat-flow work may be profitably carried out.
.gif)
were urgently required for ferrying supplies to Lake Vanda, and the heat-flow programme had to be terminated.