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Physical Sciences and Mathematics Commons

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Earth Sciences

South Dakota State University

Journal

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Full-Text Articles in Physical Sciences and Mathematics

Determination Of Volcanic Impact On Perchlorate Using Polar Ice Cores, Alex Georgiev, Collin Livingston, Cody Ward Jan 2016

Determination Of Volcanic Impact On Perchlorate Using Polar Ice Cores, Alex Georgiev, Collin Livingston, Cody Ward

The Journal of Undergraduate Research

Arctic (Greenland) ice core samples covering the time period of 1638-1646 were analyzed for perchlorate and sulfate concentrations. The sulfate data show a signal corresponding to the 1640 eruption of the Komaga-Take volcano in Japan. Perchlorate concentrations show a significant increase at the time of the Komaga-Take eruption. It is concluded that a positive correlation likely exists between stratospheric volcanic eruptions and perchlorate concentration in the environment. When a volcano has enough explosive force to inject substances into the stratosphere, some of the substances, such as sulfate, can remain in the stratosphere for months and spread all over the global …


Engineering Our Climate: A Critical Review Of The Geoengineering Response To Climate Change, Gary Huff Jan 2011

Engineering Our Climate: A Critical Review Of The Geoengineering Response To Climate Change, Gary Huff

The Journal of Undergraduate Research

Various responses to greenhouse gas induced climate change have been proposed within the literature. While the most desirable response is to dramatically reduce greenhouse gas emissions, technological and financial obstacles make it difficult to realize the reductions necessary to solve the climate change problem. Several geoengineering schemes have been proposed that would compensate for increased greenhouse gas concentrations by reducing the solar energy absorbed by Earth. The most notable of these shortwave climate engineering schemes involves injection of sulfur aerosols into the stratosphere in order to disperse incoming radiation. This paper examines the geoengineering responses to climate change and demonstrates …