Vulnerability of groundwater systems with sea level rise in coastal aquifers, South Korea |
| |
Authors: | Sung-Ho Song and Gil Zemansky |
| |
Institution: | (1) Rural Research Institute, Korea Rural Community Corporation, Ansan, 425-170, Republic of Korea;(2) Wairakei Research Centre, Institute of Geological and Nuclear Sciences, Private Bag 2000, 114 Karetoto Road, SH1, Wairakei, Taupo, New Zealand |
| |
Abstract: | Groundwater systems in coastal aquifers may be affected by sea level change as increased seawater intrusion occurs with sea
level rise. Artificial pumping taking place at the same time will increase this impact. In order to estimate the vulnerability
of groundwater systems with sea level rise within coastal aquifers in South Korea, long-term groundwater data were analyzed
using basic statistics, trend analysis, and correlation analysis. Conductivity depth profiling was also periodically conducted.
Groundwater levels increased in wells with relatively low groundwater elevations but decreased in wells with higher groundwater
elevations. At the same time, conductivity variations were greater in wells located in reclaimed land areas, which vertical
conductivity profiles indicated were more affected by sea level variations, but decreased on the mainland. Results of auto-correlation
analysis showed a decreasing trend with cyclic variations and significant periodic patterns during dry seasons, indicating
that groundwater levels were not affected by artificial factors and that those in reclaimed land areas were less affected
by rainfall than on the mainland. These results coincided with those from cross-correlation analysis showing that groundwater
level was affected by sea level variation during the dry season. Sea level changes, which may be related to climate change,
as well as rainfall in South Korea can influence groundwater levels, and the groundwater system in reclaimed land areas may
be more affected than on the mainland, especially under dry conditions. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|