Submarine geomorphological features of the Gran Canaria island based on multibeam bathymetry

We present the main submarine geomorphological features of the Gran Canaria island at a scale of 1:1,000,000 to improve seafloor knowledge. In 2024, two oceanographic cruises were carried out around the island of Gran Canaria, covering an area of ∼ 21,000 km2, from 54 to 3650 mwd. Based on the analysis and interpretation of the detailed bathymetric data obtained with a multibeam echosounder (Hydrosweep DS), morphological features have been mapped and related to genetic processes. The study shows that flanks are dominated by canyons and turbidite systems. The western channel between islands shows a morphological contrast led by mass wasting and volcanism, while the eastern channel is controlled by sedimentary dynamics. The map is the framework for understanding the complex interaction of sedimentary processes on the resulting morphology, and for conducting a preliminary assessment of marine geohazards associated with volcanic eruptions, earthquakes and mass-transport deposits.KEY POLICY HIGHLIGHTS- A Map of the submarine morphological features at a scale of 1:1,000,000 is presented.- Seafloor geomorphology reflects the geological and oceanographic processes shaping the Gran Canaria insular slope.- The interplay between volcanic and gravitational processes and bottom current action plays the main role in the development of the morphological features.