• Characterizing Groundwater Discharge and Radon Concentration in Coastal Waters, Busan City
  • Ok, Soon-Il;Hamm, Se-Yeong;Lee, Yong-Woo;Cha, Eun-Jee;Kim, Sang-Hyun;Kim, In-Soo;Khim, Boo-Keun;
  • Division of Earth Environmental System, Pusan National University;Division of Earth Environmental System, Pusan National University;Climate and Marine Environment Team, Korea Marine Environment Management Corporation;Division of Earth Environmental System, Pusan National University;School of Civil and Environmental Engineering, Pusan National University;Department of Geological Sciences, Pusan National University;Division of Earth Environmental System, Pusan National University;
  • 부산 해안지역의 물의 라돈 농도와 지하수 유출 특성
  • 옥순일;함세영;이용우;차은지;김상현;김인수;김부근;
  • 부산대학교 지구환경시스템학부;부산대학교 지구환경시스템학부;해양환경관리공단 기후수질팀;부산대학교 지구환경시스템학부;부산대학교 사회환경시스템공학부;부산대학교 지질환경과학과;부산대학교 지구환경시스템학부;
Abstract
Groundwater which infiltrated in recharge areas discharges in the forms of evapotranspiration, baseflow to streams, groundwater abstraction and eventually flows into the sea. This study characterized radon-222 concentration and electrical conductivity (EC) in coastal groundwater discharge, well groundwater, Ilkwang Stream water, and seawater in the coastal area of Busan Metropolitan City and subsequently estimated groundwater discharge rate to the sea. The median value of Rn-222 concentration is highest in well groundwater (18.36 Bq/L), and then decreases in the order of coastal groundwater discharge (15.92 Bq/L), Ilkwang Stream water (1.408 Bq/L), and seawater (0.030 Bq/L). The relationship between Rn-222 concentration and EC values is relatively strong in well groundwater and then in seawater. However, the relationship is not visible between coastal groundwater discharge and Ilkwang Stream water. The groundwater discharge rate to the sea is estimated as $3,130m^3$/day by using radon mass budget model and $16,788m^3$/day by using Darcy's law.

Keywords: Radon-222;Groundwater discharge;Ilkwang Stream;Seawater;Busan Metropolitan City;

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