Bylot Island Icefield

The 120km-long icefield is an undulating elongate plateau feeding most of the valley glaciers on the island. It is sustained by snowfall at the unusually high altitude. Several nunataks pierce the icefield, comprising frost-shattered rock rather than steep cliffs. Overall, there are few visible crevasses, and along with the state of health of its outlet glaciers, it is no longer in equilibrium with the warming climate.

Bylot Island Icefield
Aerial view of a small segment of the icefield, illustrating ice-draped mountains that in a few places reveal bedrock.
Bylot Island Icefield
A ridge line separating two glacier basins, with the influence of wind on deposition of snow being obvious – the prevailing wind was towards the right in this photo.
Bylot Island Icefield
The icefield feeds many glacier basins, bounded by prominent peaks forming a relatively mild ‘alpine’ topography.
Bylot Island Icefield
Some peaks project through the icefield as nunataks. The highest reach around 2000 metres, and these areas are sustaining the outlet glaciers from the icefield, albeit at a declining rate.
Bylot Island Icefield
Brian Moorman approaches his meteorological station which he established to monitor the state of health of the glaciers at high altitude.
Bylot Island Icefield
Heavy snowfall during the previous winter has raised the surface to near-instrument level, and some digging out was required.
Bylot Island Icefield
Richard Waller digging for buried instruments.
Bylot Island Icefield
A nunatak projects above the icefield and the gneiss bedrock here has been subject to long exposure to weathering, notably frost-action.
Photos Michael Hambrey, July 2014