1. Petroleum & Marine Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, South Korea
2. Department of Energy Resource Engineering, Pukyong National University (PKNU), Busan, South Korea
3. Agency for Defense Development, Jinhae, South Korea
4. Division of Science Education and Institute of Science Education, Chonbuk National University, Jeonju, South Korea