Time-Migrated Multichannel Seismic Profiles of the Gulf of Cagliari (CG Dataset) for Plio-Quaternary Neotectonic Analysis in Southern Sardinia (Italy)

This dataset is the result of a scientific collaboration between Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS and the Universities of Trieste and Cagliari in the framework of the WS10 project, funded by OGS (Grant OGS-CdA, no. 4.2.5.2010), with the support of the then Ministry of Education, Universities, and Research (MIUR) in 2010.

The CG seismic dataset described here supports the analyses presented in: Del Ben A., Fais S., Geletti R., Caradonna M.C., Frisicchio V., Brancatelli G., 2026. Tectonic Interplay in the Gulf of Cagliari (Italy): Extension, Compression and Strike-Slip Movements. Basin Research.

The CG profiles comprise five multi-channel seismic reflection lines acquired by the research vessel N/R OGS Explora in September 2010 (Zgur F., Geletti R., et al., 2011: https://hdl.handle.net/20.500.14083/6738). The resolution and penetration depth of these lines depend primarily on the characteristics of the source. The acquisition settings, including source and streamer depths, resulted in a notch frequency of 150 Hz. Assuming an average seismic velocity of 2000 m/s, the theoretical vertical resolution within the PQ sequence cannot be finer than 3–4 metres. The resolution remains high throughout the PQ sequence, while the seismic signal within the Oligo-Miocene sequence progressively attenuates.

The seismic data are provided in SEG-Y format, with coordinates projected in UTM Zone 32 stored in header fields 73 and 77.