The Ross Sea, located between Victoria Land and Marie Byrd Land in Antarctica, is one of the main drainage of
the Antarctic Ice Sheet (AIS). Reflection seismic data acquired by many countries during several decades have
provided insights into the history of the Ross Sea and the AIS evolution. However the majority of the existing
seismic data are concentrated in the shelf area, where hiatus formed by grounding ice sheet erosion multiple events
prevent to reconstruct the entire sedimentary sequences depositional evolution. On the outer shelf and upper slope,
the sedimentary sequences are relatively well preserved. The main purpose of this study is the investigation of the
Cenozoic Antarctic Ice Sheet evolution through the seismic sequence analysis of the outer shelf and slope of the
Central Basin, in the Ross Sea. The data used are the new multi-channel seismic data, KSL12, were acquired on
the outer shelf and upper slope of the Central Bain in February 2013 by Korea Polar Research Institute. The reflection
seismic data, previously collected by the Italian Antarctic Program (PNRA) and other data available from the
Seismic Data Library System (SDLS) are also used for velocity tomography and seismic sequence mapping. The
seismic data were processed by a conventional processing flow to produce the seismic profiles. Preliminary results
show well-developed prograding wedges at the mouth of glacial troughs, eroded by a major glacial unconformity,
the Ross Sea Unconformity 4 (RSU-4), correlated to a main event between early- and mid-Miocene. The velocity
anomalies shown along KSL12-1 can be interpreted as showing the occurrence of gas and fluids, diagenetic
horizons and sediment compactions. The isopach maps of each sequence show the variation of thickness of the
sediments depocenter shift. The seismic sequence stratigraphy and acoustic facies analysis provide information
about different phases of ice sheet’s advance and retreat related to the AIS Cenozoic dynamics.
