78°s 
72°: 
164°W 
156°W 
66s 
(COVERAGE (CONCENTRATION) 
172°W 
THICKNESS AND SNOW COVER) 
164°E 156°E 
NF care 
, HAI LET 
Cc 
[__Jlee trae 
<0.1 (open water) 
% dominant, % secondary 
Sl=Stush W=Winter ice 
Y=Young ice Pl=Polar ice 
SSS] 0.1 thru 0.4 (scattered ice) 5, AeA 
SS Ersmples ow, PI" wit 
LETT} os thru 07 coroken ica) 
WATER FEATURES 
ES) 08 thew 09 (close ice) Pd 
Puddles: dominant amount 
in tenths unless 
frozen or rotfen 
ieeeeee] 1.0 (consolidated or fast ice) 
COVERAGE BY SIZE Fe=Frozen R=Rolten 
Cn Pd Pd Pd 
am Examples: Tre 
ny =tenths of slush, brash, and block 
ny =tenths of small and medium floes 
ny=tenths of giant floes and field 
Heer Crack S= Lead 
© Polynya 
ICE OF LAND ORIGIN 
BOUNDARY Ay Icobergs—many (>20) 
—— Observed LS Icobergs—tew (<20) 
—=— Estimated a Bergy bils and growlers (>20) 
* © © Limit of observed data D Bergy bits and growlers (<20) 
172°W 
Thickness: T where n= feet and inches 
n=depth to nearest inch 
C=ice uniformly snow covered 
D=snow cover in drifts 
O=no snow cover present 
TOPOGRAPHY 
AA Rafted ice 
AW Ridged ice. 
ONO Hummocks 
Extent_H=verv extensive 
L=few present 
When no entry appears beneath 
symbol extent 1s moderal 
Examples 
H 
AA =moderate ral 
000 puree 
AW = very extensive ridging 
| NOVEMBER I960 
ting 
hs 
180° 172°E 
FIGURE 60. RESULTS OF AERIAL ICE RECONNAISSANCE, ROSS SEA 
90 
78S 
76°s 
