oO 
156°W 164°w 172°W 180° 172°E 164°E 156°E 
78S 
ICE BERG 
Cn 
70°s ira 
70S 
KEY TO ICE SYMBOLS 
[COVERAGE (CONCENTRATION) [ace] THICKNESS AND SNOW COVER 
A B T - 
——— a =K 
5% dominant. % = Thickness: ies pe aii 
‘Siz=Slush W=Winter ice ‘Snow cover: nebo 68°S 
68°S Leto ice eae 2 n==depth to nearest inch 
Examples: ———., —. etc. C=ice uniformly snow covered 
CP REAIND D=snow cover in drifts 
t 
WATER. FEATURES OS No sre coves eee 
AQ a8 thru 09 (close ice) Pd 
4 4 Puddles: dominant amount 
RRg}10 (consolidated or fast ice) Te Tae AA Ratted ice 
frozen or rotten NM Ridged ice 
COVERAGE BY SIZE F=Frozen  R=Rotten QAO Hummocks 
oo Examples: Ce Le a Extent: H=very extensive 
My, My SFR = mee 
f=tenths of slush, brash, and block tes Crack <= Lead L=few present 2 4 O Cc T O B E R | 9 6 O 
a n,=tenths of small and medi floes © Polynya When no entry appears beneath 66°S 
66S ny=tenths of giant floes and field symbol extent is moderate \ 
ICE_OF LAND ORIGIN Examples: 
A. lexbergs—many (>20) PM very extensive riding Ww 
Pas eit A lcabergs—tew (<20) AA =moderate rafting | 
——— Estimat @ Bergy bits and growlers (>20) 000 _ 
© © © Limit of observed data 2 Bergy bits and growlers (<20) TL afew hummocks Cn 
172°W 180° 172°E 
FIGURE 57. RESULTS OF AERIAL ICE RECONNAISSANCE, ROSS SEA 
87 
