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http://dx.doi.org/10.7854/JPSK.2016.25.2.143

A Preliminary Study on Calculating Eruptive Volumes of Monogenetic Volcanoes and Volcanic Hazard Evaluation in Jeju Island  

Ko, Bokyun (Department of Earth and Environmental Sciences, Korea University)
Yun, Sung-Hyo (Department of Earth Science Education, Pusan National University)
Publication Information
The Journal of the Petrological Society of Korea / v.25, no.2, 2016 , pp. 143-149 More about this Journal
Abstract
Eruptive volumes of three monogenetic volcanoes (Songaksan tuff ring, Biyangdo scoria cone, and Ilchulbong tuff cone) with the youngest eruption age are calculated using the model, applied to Auckland Volcanic Field in New Zealand, to investigate the volcanic eruption scale and to evaluate volcanic hazard of Jeju Island. Calculated eruptive volumes of the volcanoes are $24,987,557m^3$, $9,652,025m^3$, and $11,911,534m^3$, respectively, and the volumes include crater infill, tuff ring (tuff cone), scoria cone, and lava flow. Volcanic explosivity indices of Songaksan tuff ring, Biyangdo scoria cone, and Ilchulbong tuff cone are estimated based on the eruptive volumes to be 3, 2, and 3 respectively, and eruption type is Strombolian to Surtseyan. It is assumed that the amount of emitted sulfur dioxide gas is $2-8{\times}10^3kt/y$ according to the correlation between volcanic explosivity index and volcanic sulfur dioxide index. Recent age dating researches reveal evidences of several volcanic activities during the last 10,000 years indicating the possible volcanic eruption in Jeju Island in the near future. Therefore, it is necessary for appropriate researches regarding volcanic eruption of the island to be accomplished. In addition, establishment of the evaluation and preparation system for volcanic hazard based on the researches is required.
Keywords
Eruptive volumes; Auckland volcanic field model; volcanic explosivity index; volcanic sulfur dioxide index; volcanic hazard; Jeju Island;
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Times Cited By KSCI : 4  (Citation Analysis)
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