Broad band seismology in the Scotia region. The base Esperanza seismological observatory

摘要

The lithospheric study and the identification of relevant lateral heterogeneities in the Antarctic continent and borderlands is essential to understand the geodynamic evolution both of the continental and oceanic bordering regions. The complexity of the geological evolution and the structural properties of the lithosphere in the Scotia area have been stressed. The present setting of the area is the result of the mutual interaction among the Antarctic, South American and several minor plates whose geodynamic history and actual boundaries are still partially unknown. The intense seismic activity that characterizes the region encourages the use of the seismological approach to investigate the lithospheric structure of the area. A broad band three components station is operating at the Antarctic base Esperanza in the NE area of Antarctic Peninsula. The extension of our analysis to further events and to horizontal component records is presented. (Atomindex citation 27:025383)