CrustalTrudger t1_j7f927z wrote
Reply to comment by bullwinkle8088 in 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? by Irisgrower2
Right, I understand what an hourglass looks like, the point is that this type of question probably stemmed from a particular example and so providing that example would help narrow down specifically what OP is asking about.
Irisgrower2 OP t1_j7gnpp5 wrote
You are correct, there is a specific example. I won't offer up the name for online safety reasons. I'm not affiliated with any organization and this is a passion project.
The lake in question, like the one mentioned in Florida, is mostly spring fed. The rock type is much more dense. It is classified as oligotrophic despite its boundaries having been deforested, used for agriculture for over a century, and summer home development. I find that bizarre and am attempting to gain a broader scope of understanding of the systems before possibly spending next winter counting diatoms from core samples.
Furthermore, I suspect the vast majority of bathymetric map data was collected via measuring a rope with a weight at it's end. Such a methodology would overlook the characteristic I've been referring to.
Lastly, I hypothesize lake bottoms which share this characteristic maintain other anomalies to limnology models.
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