Spatial Distribution of Nitrate Concentration and Oxygen-Nitrogen Isotope Ratios in Daejeong, Jeju island, South Korea

Subeen Kim1, Changmin Kim1, Juyeon Lee1 and Minjune Yang2, (1)Pukyong National University, Division of Earth Environmental System Science, Busan, South Korea, (2)Pukyong National University, Division of Earth Environmental System Sciences-Major of Environmental Geosciences, Busan, South Korea