ice – BrainiYak

Tag Archives: ice

Increasing atmospheric carbon dioxide appears to directly weaken glacial ice bonds — by competing with water molecules for hydrogen bonds 0

Citation Zhao Qin and Markus J Buehler, Carbon dioxide enhances fragility of ice crystals, Journal of Physics D: Applied Physics 45(44): 445302, doi:10.1088/0022-3727/45/44/445302 (early online publication, 10 October 2012) A surprisingly subtle corollary to greenhouse gassing — the presence of CO2 in ice reduces fracture strength by 38 percent From the paper’s conclusion: We find [...]

Categories: Chemistry,Climate change,Environment,Glaciology,Global warming,Science

Tagged: albedo, carbon dioxide, CO2, crack propagation, fracture toughness, glacial ice, hydrogen bonds, ice, Markus J Buehler, material strength, positive feedback, surface energy, Zhao Qin

Published:: 11 October 2012 – 12:42
Author:: By BrainiYak

Lake sediment cores on the Aleutians’ Sanak Island may indicate that Ice Age ice melted 1,500 to 2,000 years earlier than previously thought — potentially allowing the beginning of Asian human migration (along the southern Bering Land Bridge toward the North American mainland) that much sooner 0

Citation Nicole Misarti, Bruce P. Finney, James W. Jordan, Herbert D.G. Maschner, Jason A. Addison, Mark D. Shapley, Andrea Krumhardt, and James E. Beget, Early retreat of the Alaska Peninsula Glacier Complex and the implications for coastal migrations of First Americans, Quaternary Science Reviews 48: 1-6 (10 August 2012) Looking for something else, this team [...]

Categories: Climate,Environment,Science

Tagged: Alaska Peninsula Glacier Complex, Alaskan Peninsula, Aleutian Islands, Aleutians, Andrea Krumhardt, Bering Land Bridge, Bruce P. Finney, carbon dates, coastal migrations, deglaciation, First Americans, Herbert D.G. Maschner, ice, Ice Age, James E. Beget, James W. Jordan, Jason A. Addison, Mark D. Shapley, Nicole Misarti, Sanak Island, sediment cores, terrestrial ecosystem, terrestrial pollen

Published:: 26 June 2012 – 18:01
Author:: By BrainiYak

Onset of the Little Ice Age — variously defined as somewhere between 1300-1850 — may be partially explained by significant sulfate-emitting volcanism and ice formation at its beginning 0

Citation Gifford H Miller, Aslaug Geirsdottir, Yafang Zhong, Darren J Larsen, Bette L Otto-Bliesner, Marika M Holland, David Anthony Bailey, Kurt A. Refsnider, Scott J. Lehman, John R. Southon, Chance Anderson, Helgi Björnsson, and Thorvaldur Thordarson, Abrupt onset of the Little Ice Age triggered by volcanism and sustained by sea-ice/ocean feedbacks, Geophysical Research Letters, doi:10.1029/2011GL050168 [...]

Categories: Uncategorized

Tagged: aerosols, Aslaug Geirsdottir, Bette L Otto-Bliesner, Chance Anderson, Darren J Larsen, David Anthony Bailey, Gifford H Miller, Helgi Björnsson, ice, John R. Southon, Kurt A. Refsnider, Little Ice Age, Marika M Holland, Medieval Climate Optimum, Medieval Warm Period, positive feedback, Scott J. Lehman, sulfates, summer cooling, Thorvaldur Thordarson, Yafang Zhong

Published:: 30 January 2012 – 13:40
Author:: By BrainiYak

BrainiYak

Tag Archives: ice

Increasing atmospheric carbon dioxide appears to directly weaken glacial ice bonds — by competing with water molecules for hydrogen bonds 0

Lake sediment cores on the Aleutians’ Sanak Island may indicate that Ice Age ice melted 1,500 to 2,000 years earlier than previously thought — potentially allowing the beginning of Asian human migration (along the southern Bering Land Bridge toward the North American mainland) that much sooner 0

Onset of the Little Ice Age — variously defined as somewhere between 1300-1850 — may be partially explained by significant sulfate-emitting volcanism and ice formation at its beginning 0

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