Freeze-up Jam
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Description:
Listen to Sam Demientieff talk about the photo.
Ice freezing up on a river and a narrow place where it can jam up.
Photos courtesy of: CRREL River Ice guide and Glossary http://www.crrel.usace.army.mil/ierd/ice_guide/iceguide.htm
Ice Breakup Reconnaissance in Alaska http://aprfc.arh.noaa.gov/resources/docs/brkup.html
UAF Alaska Archival Film Project - AAF-10 -Old Minto, 1952-1957
And also, Samuel Demientieff