Feed aggregator

Initiation of the Lusi mudflow disaster

Nature Geoscience Advanced Online - Sun, 06/28/2015 - 23:00

Nature Geoscience. doi:10.1038/ngeo2472

Authors: M. R. P. Tingay, M. L. Rudolph, M. Manga, R. J. Davies & Chi-Yuen Wang

Carbon mobilized at shallow depths in subduction zones by carbonatitic liquids

Nature Geoscience Advanced Online - Sun, 06/28/2015 - 23:00

Nature Geoscience. doi:10.1038/ngeo2464

Author: Stefano Poli

More than half a gigaton of CO2 is subducted into Earth’s interior each year. At least 40% of this CO2 is returned to the atmosphere by arc volcanism. Processes that are known to release carbon from subducting slabs—decarbonation or carbonate dissolution in fluids—can account for only a portion of the CO2 released at arc volcanoes. Carbonatitic liquids may form from the subducting crust, but are thought to form only at very high temperatures. Melting of carbonated rocks could restrict the subduction of carbon into the deeper Earth. However, the behaviour of such rock types in subduction zones is unclear. Here I use laboratory experiments to show that calcium-rich hydrous carbonatitic liquids can form at temperatures as low as 870 to 900 °C, which corresponds to shallow depths of just 120 km beneath subduction zone arcs, in warm thermal regimes. I find that water strongly depresses the solidus for hydrous carbonate gabbro and limestone rocks, creating carbonatitic liquids that efficiently scavenge volatile elements, calcium and silicon, from the slab. These extremely mobile and reactive liquids are expected to percolate into the mantle wedge, and create a CO2 source for subduction zone magmatism. Carbonatitic liquids thus provide a potentially significant pathway for carbon recycling at shallow depths beneath arcs.

Sorry Pope Francis, the State of the Planet Is Getting Better

Climate Depot - Sat, 06/27/2015 - 20:15
http://www.frontpagemag.com/2015/christopher-s-carson/sorry-pope-francis-the-state-of-the-planet-is-getting-better/   But if it’s covered in trash, it’s a strange kind of trash that has caused global crop yields to increase by 160 percent since 1961 and deaths from droughts to be reduced by 99.8 percent since the 1920s.       It’s an odd kind of “mistreatment” of the planet over the life [...]

Pope Francis recruits ‘ferocious critic’ of capitalism — Naomi Klein — in climate battle

Climate Depot - Sat, 06/27/2015 - 20:10
http://www.theguardian.com/world/2015/jun/28/pope-climate-change-naomi-klein

Salon Mag. Writer: For White Catholics, Climate Science ‘Clashes With Their Other God: The Free Market’

Climate Depot - Sat, 06/27/2015 - 20:04
http://newsbusters.org/blogs/tom-johnson/2015/06/27/salon-writer-white-catholics-climate-science-clashes-their-other-god

Dr. Salby: CO2, whether man-made or not, does not ‘drive’ the climate system

Climate Depot - Sat, 06/27/2015 - 05:57
CO2, whether man-made or not, does not ‘drive’ the climate system. http://theclimatescepticsparty.blogspot.com/2015/06/co2-whether-man-made-or-not-does-not.html Author of the seminal book on climate: “Physics of the Atmosphere & Climate,” Professor Murry Salby is without doubt one of the best Climate Scientists on the planet.In a lecture in London on the 17th March, 2015, he reveals new work which shows [...]

Arctic Sea Ice Extent Highest In A Decade

Climate Depot - Sat, 06/27/2015 - 05:54
Arctic Sea Ice Extent Highest In A Decade https://stevengoddard.wordpress.com/2015/06/26/arctic-sea-ice-extent-highest-in-a-decade-2/ As climate experts ramp up their lies about Arctic sea ice, extent is the highest for the date since 2005, and melt is the slowest since at least 2004. Ocean and Ice Services | Danmarks Meteorologiske Institut If this weather forecast … Continue reading → — gReader [...]

Sorry Pope Francis, the State of the Planet Is Getting Better

Climate Depot - Sat, 06/27/2015 - 05:52
http://www.frontpagemag.com/2015/christopher-s-carson/sorry-pope-francis-the-state-of-the-planet-is-getting-better/

Settled Climate Science? Research Finding Ocean Currents More Powerful Than CO2

Climate Depot - Sat, 06/27/2015 - 05:51
Settled Climate Science…Really? Research Finding Ocean Currents More Powerful Than CO2 http://www.c3headlines.com/2015/06/settled-climate-sciencereally-research-finding-ocean-currents-more-powerful-than-co2.html Article: Current knowledge about ocean circulations (AMOC and others) and their variability are so unsettled that the most sophisticated and powerful climate models are completely unable to accurately forecast these gargantuan climate forces. Ocean circulation is responsible for the immense… — gReader Pro

Nature Rebounds – the world is getting better, not worse

Climate Depot - Sat, 06/27/2015 - 05:49
Nature Rebounds – the world is getting better, not worse http://wattsupwiththat.com/2015/06/26/nature-rebounds-the-world-is-getting-better-not-worse By JOHN MAULDIN The common meme in today’s world is that we are slowly (or perhaps even rapidly in some instances) destroying our global environment. Not just by way of global warming, but pollution, over-farming, water usage, and increasing use of all sorts of [...]

‘The answer is blowin’ in the wind':’ Feeding oregano to cattle cuts their emission of wind – from both ends – by nearly half’

Climate Depot - Sat, 06/27/2015 - 05:48
the answer is blowin’ in the wind http://climatechangepredictions.org/uncategorized/3250 Scientists have found that feeding oregano to cattle cuts their emission of wind – from both ends – by nearly half. And that’s no small matter, for the methane they let loose – mainly by belching – is 23 times more effective in heating up the planet [...]

Light-driven generation of hydrogen [Chemistry]

PNAS Early Edition Articles - Fri, 06/26/2015 - 12:57
New dyads consisting of a strongly absorbing Bodipy (dipyrromethene-BF2) dye and a platinum diimine dithiolate (PtN2S2) charge transfer (CT) chromophore have been synthesized and studied in the context of the light-driven generation of H2 from aqueous protons. In these dyads, the Bodipy dye is bonded directly to the benzenedithiolate ligand...

The White House Wants Your Doctor To Teach You About Global Warming

Climate Depot - Fri, 06/26/2015 - 10:22
http://dailycaller.com/2015/06/25/the-white-house-wants-your-doctor-to-teach-you-about-global-warming/  

France to study reactor construction in Saudi Arabia

World Nuclear News - Fri, 06/26/2015 - 10:06
Saudi Arabia and France signed three nuclear-related cooperation agreements in Paris on 24 June. One is to carry out a feasibility study for the construction of two power reactors in the Middle Eastern country.

US regulators request natural phenomena response data

World Nuclear News - Fri, 06/26/2015 - 09:58
The US nuclear regulatory commission (NRC) has asked the owners of nuclear fuel facilities to provide more information on how they respond to natural phenomena. The commission said that apart from the need for this information, it is otherwise satisfied that "little or no further action" is needed to apply the lessons learned from the Fukushima accident.

Turkish regulator issues preliminary licence for Akkuyu project

World Nuclear News - Fri, 06/26/2015 - 08:38
JSC Akkuyu NPP, the Russian-owned company responsible for Turkey's first nuclear power plant, has been awarded a preliminary licence, enabling the company to start investment and permitting procedures for the project.

Preliminary findings positive for Swedish repository

World Nuclear News - Fri, 06/26/2015 - 04:22
The Swedish nuclear regulator has said it believes the country's radioactive waste management company can meet all the safety and radiation protection requirements for its planned repository for used nuclear fuel.
Syndicate content