Earth Sciences Forum

Andre

The Younger Dryas also happened in the oceans.

See:

http://www.whoi.edu/cms/files/Eltgroth_paleo_2006_21692.pdf

Eltgroth, S. F., J. F. Adkins, L. F. Robinson, J. Southon, and M. Kashgarian (2006), A deep-sea coral record of North Atlantic radiocarbon through the Younger Dryas: Evidence for intermediate water/deepwater reorganization, Paleoceanography, 21, PA4207,

Andre · Posted: Wed Aug 22, 2007 2:38 pm Post subject:

This is likely a smoking gun. The question is, of what?

We see here that in the ice ages the radiocarbon (14C) in the CO2 of the ocean waters was pretty stratisfied. Most in the higher layers, depletion in the bottom waters. To me that means that the bottom waters were very old and did not hardly mix (radiocarbon decayed without replenishment). We see gradual changes, apparently Then suddenly, almost overnight, things changed at the beginning of the Bolling Allerod at 14,500 years ago and again during the Younger Dryas. also way faster than the normal ocean inertia. But we end up with well mixed 14C in the waters. If Newtons law is correct F=M*a I wonder what forces were required to get these changes.

It's from here:
Robinson, L.F, J.F. Adkins, L.D. Keigwin, J. Southon, D.P. Fernandez, S-L Wang, D.S. Scheirer 2005 Radiocarbon Variability in the Western North Atlantic During the Last Deglaciation, Science, Vol 310, 2 December pp 1469-1473