Victoria University Antarctic Research Expedition Science and Logistics Reports 1979-80: VUWAE 24
Bathymetric Data (BAS)
Bathymetric Data (BAS)
At all gravity and piston core sites in McMurdo Sound water depth was measured to an accuracy of 1 m with a weighted terylene line. Along the Strand profile, McMurdo Sound has an assymetric cross-section with the longer limb on the western side and a maximum water depth of 611 m occurring two thirds of the way across the sound. The Butter Point profile is similar. The Ferrar profile runs down the centre of the valley formerly occupied by the Ferrar Glacier. Water depths in the valley were found to vary between 200 and 235 m but 15 km from the present glacier snout there is an abrupt rise in the sea floor and water depth decreases to 125 m. Further out water depth increases again to 180 m, the typical depth obtained from many measurements throughout the New Harbour area. The shallows at the mouth of the Ferrar Valley are thus anomalous. They are thought to be due to moraines left by the retreating Ferrar Glacier. Similar moraines, now submerged, have been reported from elsewhere in McMurdo Sound (Northey & Sissons (1974); Wong & Christoffel, in press).
page 29Number | Site | Lat. | Long. | Depth (m) |
---|---|---|---|---|
PC1 | Drillsite | 77 33.4 | 164 23 | 195.6 |
PC2 | Drillsite | 77 33.4 | 164 23 | 195.6 |
PC3 | Drillsite | 77 33.4 | 164 23 | 195.6 |
PC4 | 5 km west of Cape Armitage | 77 51.7 | 164 40 | 139 |
PC5 | 5 km west of Cape Armitage | 77 51.7 | 164 40 | 139 |
PC6 | De Vries fish hut | 77 52.3 | 164 30 | 456 |
PC7 | 2 km west of Cape Armitage | |||
PC8 | Beacon 2 strand | 77 45.5 | 164 42.5 | 169 |
PC9 | Ferrar Glacier Snout | 77 41.7 | 163 31 | 236 |
PC10 | Ferrar Glacier Snout | 77 41.7 | 163 31 | 236 |
PC11 | Stn 32 Ferrar Valley | 77 41.3 | 163 42 | 230 |