Features of Regional Hydrogeology and Groundwater Distribution of Volcanic Rocks in Jeju Island

Jeju Island's volcanic rocks exhibit distinct groundwater distribution patterns, primarily influenced by regional hydrogeological features. The study reveals that the island can be divided into four regions—east, west, south, and north—each with unique groundwater characteristics. In the east and west, basal groundwater and lower sub-basal groundwater dominate, while in the south and north, sub-basal and upper groundwater are more prevalent. The correlation between aquifer depth and groundwater levels is highest in the southern region, gradually decreasing towards the northern, eastern, and western regions. This research leverages data from 203 groundwater wells across Jeju Island, including agricultural, municipal, and monitoring wells, to analyze hydrogeological structures such as clinker layers, fractures, and volcanic tuffs.

Kim, B.-S., Hamm, S.-Y., Lee, C.-M., Ok, S.-I., Cha, E.-J., & Ko, Y.-S. (2011). Features of Regional Hydrogeology and Groundwater Distribution of Volcanic Rocks in Jeju Island. Journal of the Geological Society of Korea, 47(3), 263–276. https://doi.org/10.14770/jgsk.2011.47.3.263