KOPRI Repository

Seismic Stratigraphy and Tomography in the outer shelf and slope of the Central Basin, Ross Sea, Antarctica

Cited 0 time in wos
Cited 0 time in scopus
Metadata Downloads
Seismic Stratigraphy and Tomography in the outer shelf and slope of the Central Basin, Ross Sea, Antarctica
Kim, Sookwan
Santis, Laura De
Bohm, Gualtiero
Hong, Jong Kuk
Jin, Young Keun
Geletti, Riccardo
Wardell, Nigel
Petronio, Lorenzo
Colizza, Ester
Seismic stratigraphy; Seismic tomography
Antarctica; Central basin; Ross Sea
Issue Date
Kim, Sookwan, et al. 2014. Seismic Stratigraphy and Tomography in the outer shelf and slope of the Central Basin, Ross Sea, Antarctica. EGU General Assembly 2014. Vienna. 2014.04.28.-05.02.
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.
Conference Name
EGU General Assembly 2014
Conference Place
Conference Date
Files in This Item
General Conditions
      ROMEO Green
    Can archive pre-print and post-print or publisher's version/PDF
      ROMEO Blue
    Can archive post-print (ie final draft post-refereeing) or publisher's version/PDF
      ROMEO Yellow
    Can archive pre-print (ie pre-refereeing)
      ROMEO White
    Archiving not formally supported

    Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.