GNGTS 2022 - Atti del 40° Convegno Nazionale

GNGTS 2022 Sessione 3.1 387 R/V LAURA BASSI SOUTHERN OCEAN TRANSITS AS AN OPPORTUNITY TO COLLECT UNDERWAY DATA IN ANTARCTIC WATER: ISOBATA PROJECT AND COLLABORATION AMONG PNRA PROJECTS D. Accettella¹, A. Savini 2 , M. Cuffaro 3 , P. Divacco¹, F. Muccini 4 , F. Coslovic¹, L. Facchin¹, R. Codiglia¹, D. Cotterle¹, A. Cova¹, L. De Santis¹, L. Gasperini 5 , V. Kovacevic¹, M. Santulin¹, R. Scipinotti 6 , L. Ursella¹ 1 National Institute of Oceanography and Applied Geophysics – OGS, Sgonico, Italy 2 Università Milano Bicocca – UniMiB-DISAT, Milano, Italy 3 National Research Council – CNR-IGAG, ROMA, Italy 4 National Institute of Geophysics and Volcanology – INGV, ROMA, Italy 5 National Research Council – CNR-ISMAR, Bologna, Italy 6 ENEA-UTA, Bologna, Italy ISOBatA, Italian Southern Ocean Bathymetry for the exploitation of opportunistic seafloor dataset in the Antarctic water and surrounding areas , is an Italian Project funded by the Italian National Research Antarctic Program (PNRA), supported by Seabed2030 (Jakobsson et al., 2017, Mayer et al., 2018) and IBCSO - International Bathymetric chart of Southern Ocean (Arndt, JE et al., 2013). The project focuses on efficiently exploiting bathymetric and geophysical datasets obtained from ship-based research surveys collected during transit times of the renewed Icebreaker R/V Laura Bassi. Emphasis is given to seafloor acoustic mapping data, ensuring the Italian greatest contribution to the mapping of Antarctic waters, magnetometer and ADCP data as well are taken into consideration. In order to improve all efforts in mapping the gaps in the bathymetric coverage of the world’s ocean, the project partners OGS, CNR-IGAG and University of Milano-Bicocca, in cooperation with the infrastructural support and logistic, designed and planned the R/V Laura Bassi data acquisition strategy along preferred corridors back and forth New Zealand and Mario Zucchelli Station (MZS). A case study area (i.e.: The Emerald Fracture Zone – EMZ – and Fig. 1 - Ross Sea Map. Red areas: multibeam coverage acquired during 2021-2022 PNRA survey. Green dots: MORSEA mooring points. Purple rectangle: Mooring G area (Fig.2). Black dots MORSEA planned waypoints.