156°W 164°W 
78°s 
76 KEY TO ICE SYMBOLS 
eg) [TICKNESS “AND “Snow CovER) 
SSS ES Tere na feet and inches 
FEE} <01 (com wate) SeSish — WaaWinter ice a $358 
YexYourg ica PlaePolar ica 2 
FSS Q)au tore 04 (seated ie) ron nee ie earese 
S Examples: A Meete. Colca uitormly sow covered 
[DT os tw 07 corotan ia) : Deesmow cove in drifts 
SS od 
F018 tne 09 (cose ie) Pa 
Petes: dominal amount 
FERRY 0 (comatdated or tnt ier) aiiaatse Tabard ‘AA Rated ce 
74° frozen oF rotten WM Ridged ice 
(COVERAGE BY SIE] © Femfroren Rotten ano a 
Pd Pa Pd 
CACC Examples: Fy Extent: Hm very extensive 
ny =tenths of slush, brash, and Block see Crach Ss Lead Letew present 
nystenths of small ned medium floes O Porm When no entry appears beneath 
yestenths of giant floes and field symbol extent fs moderate 
ICE_OF LAND _ ORIGIN. Examples: 
A Icebergs —many (>20) 
DS Icebergs —tew (<20) 
@ Bergy bits and growlers (>20) 
= 8 © Limit of observed data © Beray bits and growers (<20) 
AM very extensive ridging 
AA smoderate rating 
200 tow hammocks 
70s 
172°W 180° 
[COVERAGE (CONCENTRATION) 
he free 
<0] (open weter) 
SS YexYoung ico PlmPolar ice 
SSS] 0.1 tru 0.4 (scattered ice) : A 
Exampies: mow 
(LITT) os te 027 corokan ic) 
EQ ar ta 03 (ce ce) 
FESS] (coats o atx) 
[Covenace ‘ey size] 
ace 
Pi) 
fiymtontia of shh, brash, and block 
tymtenths of small and medium foes 
fs mtentis of giant floes and field 
\ leabergs—few (<20) 
& Bergy bits and growers (>20) 
Limit of observed data 2 Bergy bits end growlers (<20) 
172°W 180° 
172°E 164°E 156°E 
CONSTRICTED 
CONSTRICTED 
LEADS 
19 NOVEMBER I960 
164° 
172°E 164°E 1560E 
FIGURE 65. RESULTS OF AERIAL ICE RECONNAISSANCE, ROSS SEA 
95 
