During Austral Summer 1989-90, the National Institute of Oceanography and Applied Geophysics - OGS, conducted marine geological and geophysical surveys off South Pacific ocean, in the Weddell Sea over Bellingshausen Sea, in the Ross Sea and over Admundsen Sea. This cruise collected approximately 8763 km of multichannel seismic reflection (MCS) data. The surveys extended, in diferent area, between longitudes 34 and 172 degrees west , and between latitudes 59 and 76 degrees south. The surveys were carried out by the research vessel OGS Explora. The digital MCS data were recorded on a SERCEL SN 358 DMX system. The source consisted of an airgun array with variable configuration from a total volume of 45.16 litres fired approximately every 50 meters. A GPS + TRANSIT satellite receiver system was used for navigation. Processing of the data generally followed a conventional sequence: Reformat, Trace-sum with differential NMO, Quality control, Amplitude recovery, Deconvolution, Velocity analysis, NMO corrections, Mute, Trace weighting, Stack, Mixing, Filter, Balance.

During Austral Summer 1989-90, the National Institute of Oceanography and Applied Geophysics - OGS, conducted marine geological and geophysical surveys off South Pacific ocean, in the Weddell Sea over Bellingshausen Sea, in the Ross Sea and over Admundsen Sea. This cruise collected approximately 8763 km of multichannel seismic reflection (MCS) data. The surveys extended, in diferent area, between longitudes 34 and 172 degrees west , and between latitudes 59 and 76 degrees south. The surveys were carried out by the research vessel OGS Explora. The digital MCS data were recorded on a SERCEL SN 358 DMX system. The source consisted of an airgun array with variable configuration from a total volume of 45.16 litres fired approximately every 50 meters. A GPS + TRANSIT satellite receiver system was used for navigation. Processing of the data generally followed a conventional sequence: Reformat, Trace-sum with differential NMO, Quality control, Amplitude recovery, Deconvolution, Velocity analysis, NMO corrections, Mute, Trace weighting, Stack, Mixing, Filter, Balance.

During the Antarctic summer 1987-88, a geophysical survey (seismic, gravity and magnetics) was carried out by theNational Institute of Oceanography and Applied Geophysics - OGS, in the Ross Sea with the Research Vessel Explora. Six lines of total length 2,323 km were collected. The first survey by O.G.S. in Antarctica started on January 2, 1988, when the O.G.S. Explora sailed from the harbour of Ushuaid (Tierra del Fuego, Argentina) and ended on March 8, 1988, with its arrival in Wellington Harbour (New Zealand). Gravimetric and geomagnetic data were continuously acquired during the cruise, with minor interruptions due to adverse sea conditions. The multichannel seismic survey was run in the Ross Sea from February 10 to February 24.

During the Antarctic summer 1987-88, a geophysical survey (seismic, gravity and magnetics) was carried out by the National Institute of Oceanography and Applied Geophysics - OGS, in the Ross Sea with the Research Vessel Explora. Six lines of total length 2,323 km were collected. The first survey by O.G.S. in Antarctica started on January 2, 1988, when the O.G.S. Explora sailed from the harbour of Ushuaid (Tierra del Fuego, Argentina) and ended on March 8, 1988, with its arrival in Wellington Harbour (New Zealand). Gravimetric and geomagnetic data were continuously acquired during the cruise, with minor interruptions due to adverse sea conditions. The multichannel seismic survey was run in the Ross Sea from February 10 to February 24.

During Austral Summer 1989-90, the National Institute of Oceanography and Applied Geophysics - OGS, conducted marine geological and geophysical surveys off South Pacific ocean, in the Weddell Sea over Bellingshausen Sea, in the Ross Sea and over Admundsen Sea. This cruise collected approximately 8763 km of multichannel seismic reflection (MCS) data. The surveys extended, in diferent area, between longitudes 34 and 172 degrees west , and between latitudes 59 and 76 degrees south. The surveys were carried out by the research vessel OGS Explora. The digital MCS data were recorded on a SERCEL SN 358 DMX system. The source consisted of an airgun array with variable configuration from a total volume of 45.16 litres fired approximately every 50 meters. A GPS + TRANSIT satellite receiver system was used for navigation. Processing of the data generally followed a conventional sequence: Reformat, Trace-sum with differential NMO, Quality control, Amplitude recovery, Deconvolution, Velocity analysis, NMO corrections, Mute, Trace weighting, Stack, Mixing, Filter, Balance.

During the Antarctic summer 1988-89, a geophysical survey (seismic, gravity and magnetics) was carried out by the National Institute of Oceanography and Applied Geophysics - OGS of Trieste, Italy, in the Ross Sea with the Research Vessel O.G.S. Explora. 23 lines of total length 4113.1 Km were collected. The cruise began on December 10,1988 from the harbor of Hobart (Australia) and ended on January 15, 1989, with its arrival in Dunedin (New Zealand). Gravimetric and geomagnetic data were continuously acquired during the cruise, with minor interruptions due to adverse sea conditions. The multichannel seismic survey was run in the Ross Sea from December 18 to January 8. The project has been financially supported by the Italian Antarctic Program (PNRA).

During the Antarctic summer 1987-88, a geophysical survey (seismic, gravity and magnetics) was carried out by the National Institute of Oceanography and Applied Geophysics - OGS, in the Ross Sea with the Research Vessel Explora. Six lines of total length 2,323 km were collected. The first survey by O.G.S. in Antarctica started on January 2, 1988, when the O.G.S. Explora sailed from the harbour of Ushuaid (Tierra del Fuego, Argentina) and ended on March 8, 1988, with its arrival in Wellington Harbour (New Zealand). Gravimetric and geomagnetic data were continuously acquired during the cruise, with minor interruptions due to adverse sea conditions. The multichannel seismic survey was run in the Ross Sea from February 10 to February 24.

During the Antarctic summer 1988-89, a geophysical survey (seismic, gravity and magnetics) was carried out by the National Institute of Oceanography and Applied Geophysics - OGS of Trieste, Italy, in the Ross Sea with the Research Vessel O.G.S. Explora. 23 lines of total length 4113.1 Km were collected. The cruise began on December 10,1988 from the harbor of Hobart (Australia) and ended on January 15, 1989, with its arrival in Dunedin (New Zealand). Gravimetric and geomagnetic data were continuously acquired during the cruise, with minor interruptions due to adverse sea conditions. The multichannel seismic survey was run in the Ross Sea from December 18 to January 8. The project has been financially supported by the Italian Antarctic Program (PNRA).

Complementary with the ANTSSS project funded by EUROFLEETS, ODYSSEA aimed at investigating the sediment drifts to the west of the Hillary Canyon (Ross Sea continental margin) by means of seismic and oceanographic data to contribute to the understanding of past and present ocean dynamics and glacial history of this Antarctic sector. During the 32nd PNRA expedition, OGS Explora collected over 240 km of Single Channel Seismics (SCS), 2700 km2 of bathymetry, 500 km of sub-bottom, 6 gravity cores for a total of nearly 30 m of sediments, 4 box cores, 25 XBT launches, 2 rosette casts with water sampling, CTD, L-ADCP, turbidity and florescence probes. Part of the seismic data have been initially published in Conte R et al (2021) Bottom current control on sediment deposition between the Iselin Bank and the Hillary Canyon (Antarctica) since the late Miocene: An integrated seismic-oceanographic approach. Deep-Sea Research Part I: Oceanographic Research Papers 176, art. no. 103606, DOI: 10.1016/j.dsr.2021.103606

During the Antarctic summer 1988-89, a geophysical survey (seismic, gravity and magnetics) was carried out by the National Institute of Oceanography and Applied Geophysics - OGS of Trieste, Italy, in the Ross Sea with the Research Vessel O.G.S. Explora. 23 lines of total length 4113.1 Km were collected. The cruise began on December 10,1988 from the harbor of Hobart (Australia) and ended on January 15, 1989, with its arrival in Dunedin (New Zealand). Gravimetric and geomagnetic data were continuously acquired during the cruise, with minor interruptions due to adverse sea conditions. The multichannel seismic survey was run in the Ross Sea from December 18 to January 8. The project has been financially supported by the Italian Antarctic Program (PNRA).