Submarine channels are erosional features that can be several km-wide and 10-100s km-long and are commonly found on continental margins and abyssal plains (Fildani et al., 2013;Hansen et al., 2017;Lemay et al., 2020). They are important elements of source-to-sink depositional systems and can gather abundant paleoceanographic and paleoclimatic information in their constituent channel-fill deposits (Allen, 2017;Hernández-Molina et al., 2003;Zhu et al., 2010). The generation of channels transverse to continental slopes is mainly controlled by gravitational processes (de Leeuw et al., 2016;Fildani et al., 2013;Li et al., 2015) but can also be influenced by oceanographic processes such as dense shelf-water cascading and internal waves (Puig et al., 2014). In contrast, contour currents are the primary control on the evolution of channels parallel to the slope bathymetry (García

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