Wind-blown silt on ice on lower Tanana River Photo Credits: Chas Jones Wind-blown silt in this area of the Tanana River accelerates ice melt due to increased heat absorption and can create hazardous travel conditions. Process Observed: Unsafe IceSilt On IceHeat AbsorptionTravel Hazard Date Process Observed: Tuesday, March 16, 2010 Galleries: Windblown silt on ice on lower Tanana River Gallery