Description :
Depending on the weather conditions, ice cover can grow the full extent of the available water depth and become attached to the lake bottom. Unfortunately, bottom-fast ice cannot be discriminated from floating columnar ice in individual RADARSAT-2 multi-polarization composite images because both ice types display black. Discrimination of the two ice types is facilitated by a times series of RADARSAT-2. The measured backscatter level decreases when the ice becomes bottom-fast and increases when the ice grows. Similar to shorelines, bottom-fast ice formations jeopardize the trafficability of ice roads because their
presence increases the risk of traffic induced ice cover failures. However, the presence of bottom-fast ice is more difficult to ascertempty trucks, is 30 km h-1. In accordance with environmental regulations, portages must be covered by minimally 10 cm of snow/ice in order to limit disturbance of the soil by traffic.
Photographe :
van der Sanden, J J
Collection :
Ressources naturelles Canada
Haute-résolution :
6.39 MB
6000x4000 pixels
300 ppi (jpeg)
Nota :
Depending on the weather conditions, ice cover can grow the full extent of the available water depth and become attached to the lake bottom. Unfortunately, bottom-fast ice cannot be discriminated from floating columnar ice in individual RADARSAT-2 multi-polarization composite images because both ice types display black. Discrimination of the two ice types is facilitated by a times series of RADARSAT-2. The measured backscatter level
decreases when the ice becomes bottom-fast and increases when the ice grows. Similar to shorelines, bottom-fast ice formations jeopardize the trafficability of ice roads because their presence increases the risk of traffic induced ice cover failures. However, the presence of bottom-fast ice is more difficult to ascertain.
Géographie :
6554; Tibbitt-to-Contwoyto Winter Road; Territoires du Nord-Ouest; 2020-336.JPG; Nunavut