Fig. 10

Effect of a large embayment southwest of the A–B section on surface heat flow. a Simplified bathymetry orthogonal to the A–B section. b Plot of \(q/q_{0}\) ratio, where \(q_{0}\) is the heat flow originating from the deep-seated heat flux, and \(q\) is the estimated heat flow at the seafloor from the deep-seated heat flux. A ratio less than 1 indicates that the shallow subseafloor is subject to defocusing induced by the topography, whereas a ratio larger than 1 indicates that the shallow subseafloor is subject to focusing induced by the topography