ANTARCTICA-I - DEEP-STRUCTURE INVESTIGATIONS INFERRED FROM SEISMOLOGY- A REVIEW

The strategic position of Antarctica and its role have always been see n as clues to the tectonic and geodynamic history of the southern hemi sphere. Direct investigations are difficult, and seismology was, and s till is, a very efficient tool for answering some important questions. Major seismological results from the beginning of the century to the present are reviewed, taking into consideration their limitations owin g to the lack of stations and data. The existing regional Earth models reviewed are very simple because of poor processing facilities. The a vailability of high-quality data, obtained with the GEOSCOPE network i n this part of the southern hemisphere, has recently led to the constr uction of maps of lateral heterogeneities of Antarctica with an improv ed resolution. A brief report of our contribution is presented.