Desarrollo de la Antártica

Aristides Pinto-Coelho I INSTlTUro IlRASlLEIRO DE ESTUD08 ANTARTlCOS: ••• During our efforts to s'how the importance of Antarctic studies for our country we llave been trying to interpret some otller natural fac– tores related with Antarctic environment. MAXIMUM ABSORPTION OF NON-ANTARCTIC ALGAE PHYCOBILLINS COMPARED TO MAXIMUM ABSORPTION OF ANTARCTIC ALGAR PHYCOBILLINS Algae Rhodymena per/orata Por1Jhyra perforata Phormidium ¡per,sicinum PorPhyra perforata [yngbya lerhemií Porphyridiumz cruentum Antarctic algae Pantoneura plocamioides (?) rhrodoPhycea Delisea pulchra C hromoprotein R-phycoerithrin R-phycoerithrin C-phycoerithrin R-phycocianin C-phycocianin AIlophycocianin R-phycocrithrin R -phycocri thrin R-phycocrithrin Maximum absorption (mil) 497.537,564 497. 562 560 555.617 620 290,500 325 300 650 The Earth magnetosphere is a real barrier against penetration of high energy particles from either ~ohi1 winds and cosmic rays into the IEarth equator, but favors this penetratíon through the Earth po– les. This magnetospheric shape has conditioned the magnetic polar storms and the magnetic chanelling of high energy particles from the outspace to the Earth biosphere (10). The mechanisms and the results of these influences are not Wf'l! understood yet, though its in– fluance on sharp climatic alterations has been suggested (11). Our prelinúnary conclusíons on this field were based on: 1. Periodical informations on Antarctic ice distribution and Ant– arctic atmospheric conditions kindly sent to IBEA by the National Sci– ence Foundation (USA) and Dry ValJey Drilling Project lAutllorities (12, 13) _ 2. Some data collected during OUT participatíon in an Antarctic ex– pedition under NSF in 1974. 3. Informations on Antarctic col,} currents gat'hered aJong Brazi– lian southern coast (Sao Paulo and RlO de Janeiro) .