All Articles Tagged As: methane
The release of massive amounts of carbon from methane hydrate frozen under the seafloor 56 million years ago has been linked to the greatest change in global climate since a dinosaur-killing asteroid presumably hit Earth nine million years earlier. New calculations by researchers at Rice University show that this long-controversial scenario is quite possible.
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A study by Duke University researchers has found high levels of leaked methane in well water collected near shale-gas drilling and hydrofracking sites. The scientists collected and analyzed water samples from 68 private groundwater wells across five counties in northeastern Pennsylvania and New York.
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 | Calling the results "extremely surprising," researchers from the University of California, Santa Barbara and Texas A&M University report that methane gas concentrations in the Gulf of Mexico have returned to near normal levels only months after a massive release occurred following the Deepwater Horizon oil rig explosion. ...> Full Article |
An international team of scientists has released data indicating that greenhouse gas uptake by continents is less than previously thought because of methane emissions from freshwater areas.
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A new simulation of oil and methane leaked into the Gulf of Mexico suggests that deep hypoxic zones or "dead zones" could form near the source of the pollution. The research investigates five scenarios of oil and methane plumes at different depths and incorporates an estimated rate of flow from the Deepwater Horizon spill, which released oil and methane gas into the Gulf from April to mid July of this year.
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40,000 years ago rapid warming led to an increase in methane concentration. The culprit for this increase has now been identified. Mainly wetlands in high northern latitudes caused the methane increase, as discovered by a research team from the University of Bern and the German Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association. This result refutes an alternative theory dis-cussed amongst experts, the so-called "clathrate gun hypothesis".
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 | A section of the Arctic Ocean seafloor that holds vast stores of frozen methane is showing signs of instability and widespread venting of the powerful greenhouse gas, according to the findings of an international research team led by University of Alaska Fairbanks scientists Natalia Shakhova and Igor Semiletov. ...> Full Article |
The surprising increase in methane concentrations millennia ago, identified in continental glacier studies, has puzzled researchers for a long time. According to a strong theory, this would have resulted from the commencement of rice cultivation in East Asia. However, a study conducted at the University of Helsinki's Department of Environmental Sciences and the Department of Geosciences and Geography shows that the massive expanse of the northern peatlands occurred around 5000 years ago, coincident with rising atmospheric methane levels.
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 | Scientists in Washington, D.C. are reporting laboratory evidence supporting the possibility that some of Earth's oil and natural gas may have formed in a way much different than the traditional process described in science textbooks. Their study is scheduled for November/December issue of ACS' Energy & Fuels, a bi-monthly publication.
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 | Same mechanism would allow trapped methane to escape in arctic regions ...> Full Article |
 | Oil and gas started out as living organisms that died, were compressed, and were heated under layers of sediments in the Earth's crust. Scientists have debated for years whether some of these hydrocarbons could have been created deeper in the mantle and formed without organic matter. Now for the first time, scientists have found that ethane and heavier hydrocarbons can be synthesized under conditions of the upper mantle.
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 | Research team says methane-triggered global warming ended last 'snowball' ice age; dramatically reorganized Earth system ...> Full Article |
 | New insights into natural changes in atmospheric methane concentrations ...> Full Article |
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