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14 Feb 2017
Status : this preprint was under review for the journal NHESS but the revision was not accepted.
Groundwater level changes on Jeju Island associated with the
Kumamoto and Gyeongju earthquakes
Soo-Hyoung Lee , Yoon-Suk Park , Kyoochul Ha , YongCheol Kim , Sung-Wook Kim , and Se-Yeong Hamm
The largest earthquake since the beginning of instrumental earthquake monitoring (magnitude 5.4) in Korean peninsula occurred in Gyeongju City area, South Korea, at 20:32:54 on September 12, 2016 (local time). Before the Gyeongju earthquake, an earthquake of magnitude 7.0 occurred in Kumamoto prefecture, Kyushu, Japan, at 01:25:06 on April 16, 2016 (local time). This study examined groundwater level changes of the monitoring wells on Jeju Island in relation to the Gyeongju and Kumamoto earthquakes. Groundwater level changes due to the Kumamoto and Gyeongju earthquakes exhibited spikes or oscillations, with the initial water level change occurring 2–3 min after earthquake generation, displaying different behaviors depending on the magnitude of the earthquakes and different sensitivities depending on the aquifer and geological characteristics. On Jeju Island, the groundwater level change caused by the Gyeongju earthquake (M 5.4) was larger than that caused by the Kumamoto earthquake (M 5.4). This was because a smaller energy attenuation occurred during the Gyeongju earthquake along the Yangsan fault on the Korean peninsula extending in the NNE-SSW direction, while a larger energy attenuation occurred during the Kumamoto earthquake along the median tectonic line (MTL) fault on the Japanese island arc extending in the ENE-WSW direction.
Received: 19 Jan 2017 – Discussion started: 14 Feb 2017
Soo-Hyoung Lee , Yoon-Suk Park , Kyoochul Ha , YongCheol Kim , Sung-Wook Kim , and Se-Yeong Hamm
Status: closed
Status: closed
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
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Status: closed
Status: closed
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
- Printer-friendly version
- Supplement
Soo-Hyoung Lee , Yoon-Suk Park , Kyoochul Ha , YongCheol Kim , Sung-Wook Kim , and Se-Yeong Hamm
Soo-Hyoung Lee , Yoon-Suk Park , Kyoochul Ha , YongCheol Kim , Sung-Wook Kim , and Se-Yeong Hamm
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