Dynamic events near the upper and mid-fan boundary of the Bengal Fan
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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.
KeywordsSouth Fork North Fork Small Valley Levee Height Levee Break
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