Abstract
Bathymetric sections across the most recent valley just above and below the transition of upper to middle fan show a northward shift of the thalweg between the confines of the levees. This small-scale migration was followed by a levec break on the higher north side. Part of the bottom currents, which normally would have been contained within the levees, spilled over and spread laterally in a northward direction. This levee break caused a canyonward shift of the boundary between the upper and mid fan, and the diverted flow croded smaller valleys in the western part of the fan.
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References
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Emmel, F.J., Curray, J.R. Dynamic events near the upper and mid-fan boundary of the Bengal Fan. Geo-Marine Letters 1, 201–205 (1981). https://doi.org/10.1007/BF02462434
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DOI: https://doi.org/10.1007/BF02462434