[meteorite-list] New Paper On Younger Dryas Cold Event
From: Paul H. <oxytropidoceras_at_meteoritecentral.com>
Date: Wed, 21 Apr 2010 7:15:54 -0500 Message-ID: <20100421081554.S2P6Q.76354.imail_at_eastrmwml33> Dear Friends, New paper about the Younger Dryas cold event has been published in: Broecker, W. S., G. H. Denton, R. L. Edwards, H. Cheng, R. B. Alley, and A. E. Putnam, 2010, Putting the Younger Dryas cold event into context Quaternary Science Reviews. vol. 29, no. 9-10, pp. 1078-1081. Abstract at: http://dx.doi.org/10.1016/j.quascirev.2010.02.019 This paper argues that ?rather than being a freak occurrence, the Younger Dryas is an integral part of the deglacial sequence of events that produced the last termination on a global scale.? The abstract also states: ?The recent suggestion that the Younger Dryas was triggered by the impact of a comet has not gained traction.? The paper also disputes the hypothesis that the Younger Dryas was triggered by a flood of water stored in proglacial Lake Agassiz. The paper concludes that ?when viewed in the context of the last four terminations, cold reversals equivalent to the YD seem to be integral parts of global switches from glacial to interglacial climate. No one-time catastrophe is required.? and ?Based on these observations of the climate signatures during several terminations, we conclude that there is no need to call upon a one-time catastrophic event to explain the YD. More likely, the YD was a necessary part of the last termination.? A related paper by Dr. Broecker is ?Was the Younger Dryas Triggered by a Flood?? at: http://www.ldeo.columbia.edu/res/div/ocp/gs/pubs/broecker_science.pdf Yours, Paul H. Received on Wed 21 Apr 2010 08:15:54 AM PDT |
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