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Abstract

Summary

This study investigates the seismic characterization of the seafloor and shallow subsurface of the Mundaú Sub-basin, Brazilian Equatorial Margin, focusing on geohazard assessment for safe offshore wind farm deployment. Using approximately 12,247 km of 2D seismic profiles and a 3D seismic volume covering 1,152 km2, seismic attributes and stratigraphic–geomorphological analysis were applied to map seabed features and its subsurface. Results reveal incised valleys, submarine canyons, faults, carbonate mounds, sinkholes, rocky substrates, and gas-related anomalies, all of which may compromise foundation stability and long-term infrastructure safety. Despite limitations of legacy data, the 3D models provide valuable insights for defining safe zones and guiding future high-resolution surveys. These findings integrate geophysical science into the energy transition, supporting risk mitigation and the sustainable development of offshore wind energy in Brazil, in line with the UN Sustainable Development Goals and international efforts to expand ocean knowledge.

© EAGE Publications BV
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/content/papers/10.3997/2214-4609.202521252
2025-10-27
2026-01-18

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/content/papers/10.3997/2214-4609.202521252
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Seismic Mapping and Geohazard Assessment in the Brazilian Equatorial Margin for Offshore Wind Farm Safety
Conference Proceedings 2025, 1 (2025); https://doi.org/10.3997/2214-4609.202521252
/content/papers/10.3997/2214-4609.202521252
/content/papers/10.3997/2214-4609.202521252
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