Nenana_River_Project_Title
Studying River Ice title

RIVER ICE FREEZE-UP OBSERVATIONS - HEALY, AK

Location: HEALY
      Date: 5 December 2008 (081205)
     Time: 1:50 pm
GENERAL FrzUp
ICE CONDITIONS
Upstream Border  
Ice Extent (%) 70
   
Border ice change  
None X
Fracture  
Flooding  
Movement  
   
Downstream Border  
Ice Extent (%) 50
   
Border ice extent  
None X
Fractured  
Flooding  
Movement  
   
Across Stream  
Channel Ice Type  
None  
Frazil X
Pancakes, small  
Pancakes, large  
   
Frost Smoke (Y/N) N
DAILY PHOTOGRAPHS OF THE RIVER FREEZE UP CONDITIONS
1) ACROSS water body photo: Healy, 5 December 2008, across

COMMENTS:

2) DOWNSTREAM water body photo: Healy, 5 December 2008, downstream

COMMENTS:

3) UPSTREAM water body photo: Healy, 5 December 2008, upstream

COMMENTS:

 















To see larger versions of these images click here.
ENVIRONMENTAL CONDITIONS
Select (X) one from each catagory:
Sky: (0%)  
  (<10%)
  (10-25%)  
  (25-50%)  
  (50-90%)  
  (>90%)  
     
Wind: calm X
  light wind  
  windy  
     
Precipitation: none  X
  snow flurries  
  snowing  
  dizzle  
  rain  
  freezing rain  
     
Ice surfaces: smooth  
(may choose rough  X
more than blocky/broken/jumbled X
one) wet/flooded  
  holes/leads  
  bare (melting)  

ice jam  
     
Snow on ice: none (bare, cold)  
  new - patchy  
  new - continuous  
  stable with new snow layer  
  stable/no change  
  wind redistributed
  icy crust  
  melting/wet  
  none (bare, warm)  
     
Snow on none  
bank/shore: new, patchy  
  new, continuous  
  stable with new snow layer  
  stable/no change  
  wind redistributed X
  icy crust  
  melting/wet  

OTHER COMMENTS

It was -14°C at time of observation.  The wind has been back and warmed up the area.  Temps at the river have stayed below freezing but just up the hill temperatures have been above freezing.

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