east and become fully occluded in the following 12 hour period. 



2. Long occluded fronts orientated in the north-south line and 

 terminating in deep depressions are very frequently found in the 

 Ross Sea area. They form from unstable waves on a section of 

 the polar front in the vicinity of Australia or New Zealand. 



3. Not one of the cyclones investigated that formed to the west 

 of the 180th meridian was able to work its way through the semi- 

 permanent high, displaced along the 120th meridian, and migrate 

 into the Bellingshausen Sea area. 



4. Low pressure centers which move into the Bellingshausen Sea 

 are usually picked up in the vicinity of 120° and 55°. 



5. When migratory low pressure centers stagnate in the Bell- 

 ingshausen Sea, a new center normally develops off the northern 

 tip of the Palmer Peninsula. The regeneration of lows north of 

 the Palmer Peninsula cause a northward outbreak of cold con- 

 tinental air along the east coast of the Palmer Peninsula and be- 

 hind the low as it goes into the Weddell Sea. 



6. The major fronts in the Bellingshausen Sea are long occlu- 

 sions, which are the remnants of waves that originate on the 

 South Pacific polar front and develop into mature wave systems 

 as they move southeastward. Warm and cold fronts of normal 

 orientation extend from the occlusions. 



7. Small stable waves infrequently develop on the Antarctic 

 Front west of the Ballenys. These are found during periods in 



Figure A-4. — Seals in the Bay of Whales. 



^ V 





