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http://dx.doi.org/10.7857/JSGE.2016.21.6.080

Gyeongju Earthquakes Recorded in Daily Groundwater Data at National Groundwater Monitoring Stations in Gyeongju  

Lee, Jin-Yong (Department of Geology, Kangwon National University)
Publication Information
Journal of Soil and Groundwater Environment / v.21, no.6, 2016 , pp. 80-86 More about this Journal
Abstract
Earthquakes of M5.1, M5.8 and M4.5 occurred in September 12 and 19 respectively in Gyeongju, Gyeongbuk Province. Theses earthquakes inflated fears of people and highlighted necessity of detailed countermeasures because we have considered our country is safe to earthquakes. In the meanwhile, earthquake also impacts groundwater and thus it was recently reported that the Gyeongju Earthquakes affected groundwater there. This study evaluates daily groundwater data collected from five national groundwater monitoring stations (Geoncheon, Sannae, Oedong, Yangbuksin, Cheonbuk) in Gyeongju. The analysis revealed that only groundwater level of bedrock monitoring well hosted in andesite exhibited earthquake impact while no wells in the other four stations hosted in sedimentary rocks showed substantial responses to the earthquakes. This may be derived from the difference of seismic velocity of hosting rocks as well as epicenter distance. Special interest on groundwater monitoring is required to predict earthquakes as precursory phenomena.
Keywords
Earthquake; Precursory phenomena; Groundwater level; National Groundwater Monitoring Station; Gyeongju;
Citations & Related Records
Times Cited By KSCI : 8  (Citation Analysis)
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