초록

용어보기논문에서 용어와 풀이말을 자동 추출한 결과로, 시범 서비스 중입니다. AI-Helper

Abstract ▼ AI-Helper

Tidal efficiency and hydraulic diffusivity are estimated from the records of groundwater level in 17 monitoring wells for seawater intrusion and tidal stage at Seongsanpo tidal station in eastern part of Jeju island. A new method to estimate tidal efficiency is proposed and applied to evaluate the i...

Tidal efficiency and hydraulic diffusivity are estimated from the records of groundwater level in 17 monitoring wells for seawater intrusion and tidal stage at Seongsanpo tidal station in eastern part of Jeju island. A new method to estimate tidal efficiency is proposed and applied to evaluate the inland extent of ocean-tide influence on groundwater level at coastal aquifer. Inland extents of ocean tide influence on groundwater level are 7.8 km in Handong, 7.5 ㎞ in Jongdal, 5.9 ㎞ in Susan and 4.2 ㎞ in Hacheon. Estimates of hydraulic diffusivity based on the amplitude ratio of tidal components in groundwater level to tidal stage range from 2.5 × 10⁷ m²d⁻¹ to 7.5 × 10⁷ m²d⁻¹, which are not consistent with the known transmissivities and storage coefficients of the aquifer. he expansion of groundwater flow regime of the study area from diffuse-flow to conduit-flow could accomodate the values of hydraulic diffusivity. The existence of the hydrogeologic features such as lava tunnel, clinker and pillow lava, etc which could induce the rapid flow of groundwater strongly suggests the possibility of conduit-flow of groundwater in the study area.

주제어