Chapter 4: Climate
Only a few aspects of an area’s climate show up on remotely sensed images, for example, the distribution of snowfall. However, air photos do show several of the effects of, and responses to, climate such as the construction of shelterbelts to protect against the wind.
4.3: Light Dusting of Snow in Palaeochannel Area North of Portage la Prairie
This early winter photo shows two abandoned river channels 1, 2 meandering across a flat plain. A light dusting of snow picks out some of the meander scrolls 3, 4. It also emphasizes the harvesting pattern in several fields 5 including an unusual arrangement in one of them 6. Farm buildings on this open plain have tree shelterbelts on the north side at least 7. The trees throw long shadows that indicate that they are deciduous 8—without leaves at this time of year. Rather surprisingly snow drifts near shelterbelts 9 indicate that recently wind was from the southeast. Section lines 10 and quarter section lines 11 are obvious. As usual farms 12 are located along section lines.
Figure 4.3: Light Dusting of Snow in Palaeochannel Area North of Portage la Prairie
Vertical air photograph: A20911-44
Flight height: 10,000 feet a.s.l.; lens focal length: 152.17 mm
Date: November 15, 1968
Scale: 1:19,800 (approx.)
Location: Township 12; Ranges 6 and 7WI
Map sheets: 1:250,000 62G Brandon
1:50,000 62J/1 MacDonald