Is there a term for lake bottoms that "hour glass" (temporarily becomes wider following a "shelf" as the depth increases ) , how do bathymetric maps depict this, and does this have a common affect on turbidity, thermoclines, or other characters? Submitted by Irisgrower2 t3_10ujc84 on February 5, 2023 at 6:21 PM in askscience 15 comments 79