Aerial photos

  

 

 
Ten helicopter photographic survey flights followed a modified rectangular flight pattern centered about the Healy in order to extend surface-based measurements to larger scales and to estimate the relative areal extent of melt ponds, ice floes, and leads. Flights were conducted at an altitude between 500 and 2,000 feet due to frequent low cloud ceilings. High-resolution digital photos taken of the ice pack recorded the change in surface conditions as summer transitioned to fall and as the cruise progressed northward. Sample photos are presented for all ten flights. Flight parameters are summarized on the right.
 
Flight Latitude Longitude Altitude Photos
8-14 78 13 N 153 40 W 2000 433
8-18 78 0 N 176 07 W  1000 880
8-22 80 51 N 176 09 W   1000 1335
8-27 83 57 N 172 03 W  500 1030 
8-31 84 10 N 155 56 W  1000 390
9-06 87 38 N 156 04 W 750  1485
9-08 88 22 N 145 39 E ~1000  860
9-15 88 36 N 66 08 E  1000 854
9-24 81 20 N  22 59 E   500 1260
9-26 80 30 N 07 46 E   1000 1340
 

Map of cruise track (black line) with locations of helo survey flights plotted as yellow triangles.

Photograph showing helo pod. A digital camera was mounted inside the pond pointing downward.
 

For a complete set of DVDs with all the aerial photographs contact Don Perovich:    donald.k.perovich@erdc.usace.army.mil