by Europlanet Media Centre, September 21, 2017 in ScienceDaily
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Diamonds may be ‘forever’ but some may have formed more recently than geologists thought. A study of 26 diamonds, formed under extreme melting conditions in the Earth’s mantle, found two populations, one of which has geologically ‘young’ ages. The results show that certain volcanic events on Earth may still be able to create super-heated conditions previously thought to have only existed early in the planet’s history before it cooled. The findings may have implications for diamond prospecting.
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by Forschungsverbund Berlin e.V. (FVB), September 21, in ScienceDaily
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With the help of satellite observations from 188 lakes worldwide, scientists have shown that the warming of large lakes amplifies their color. Lakes which are green due to their high phytoplankton content tend to become greener in warm years as phytoplankton content increases. Clear, blue lakes with little phytoplankton, on the other hand, tend to become even bluer in warm years caused by declines in phytoplankton. Thus, contrary to previous assumptions, the warming of lakes tends to amplify their richness or poverty of phytoplankton.
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by Tony Heller, September 21, 2017 in TheDeplorableClimSciBlog
New England hasn’t had a major hurricane in over 60 years, but on this date in 1938, New Jersey, New York, New England and Quebec were hit by a major hurricane – which would have destroyed Lower Manhattan had it tracked 30 miles to the west
by Renee Hannon, September 21, 2017 in WUWT
Results indicate climate models where the initiation of glaciation depends strongly on CO2concentrations over astronomical controls significantly overpredict the duration of the present-day warm period compared to past interglacial analogs.
La géologie, une science plus que passionnante … et diverse
