Researchers Identify 37 Subglacial Lakes in Canada's Arctic, 35 Previously Unknown

Researchers have identified 37 subglacial lakes beneath glaciers in Canada's Arctic, 35 of which were previously unknown. The study reveals an interconnected network of water bodies under the ice.

The lakes drain more rapidly, sometimes within a year or a few months. The source of water filling the lakes remains unclear, but it may originate from meltwater seeping through crevices and channels from the glacier surface.

The research utilized data from ArcticDEM, an initiative hosted by the University of Minnesota that provides high-resolution imagery of the Arctic. This allowed measurements of glacier surface elevation changes to detect subglacial lakes and their filling or draining cycles.

change contributes to increased glacier melt in the Arctic.

A gap exists between measured glacier melt and actual ocean contributions, as some meltwater refreezes within the ice. Further analysis of subglacial lakes could address this discrepancy and refine sea level rise projections.

measurements are planned to build a comprehensive dataset in the coming years. This work focuses on remote sensing methods to monitor glacier changes in the region.