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May 24, 2014
Dead Branch of Norris Glacier Decay, Alaska
The Dead Branch of the Norris Glacier is a side valley of the Norris Glacier fed by the main glacier. Instead of tributary it is a distributary tongue. As the Norris Glacier has thinned and retreated 100 m from 1984-2013 recently the inflow had declined. The Dead Branch has retreated and a subglacial lake forms each spring that lifts the glacier causing concentric crevasses to form. The lake then drains …
Dean of Academic Affairs at Nichols College and Professor of Environmental Science at Nichols College in Massachusetts since 1989. Glaciologist directing the North Cascade Glacier Climate Project since 1984. This project monitors the mass balance and behavior of more glaciers than any other in North America.