Introduction of Eupcheon Fault Monitoring System

다국어 초록 (Multilingual Abstract)

Sung-Il Cho, Weon-Hack Choi, Jong Sun Hwang, Jae-Won Choi and Chun-Joong Chang, 2012, Introduction of Eupcheon Fault Monitoring System. Journal of the Geological Society of Korea. v. 48, no. 6, p. 533-542 ABSTRACT: This short paper introduces the only Fault Monitoring System (FMS) of Korea managed by Korea Hydro & Nuclear Power Co. Ltd. (KHNP) ? Central Research Institute (CRI) as well as such cases of the United States of America (USA), Japan and Taiwan. Those foreign countries employed the FMS from early 1960s as geo-tectonic induced disasters are common in the countries. The first Eupcheon Fault Monitoring System (EFMS) of Korea is installed around the Eupcheon fault located in Gyeoungju city. The system is equipped with in-situ measuring units including strain meter, creepmeter, Global Positioning System (GPS), seismometer, and groundwater level meter. The high accuracy in-situ data is served to the central controlling researchers units in real time by data transfer system, storage servers and integral monitoring program. The observation data from EFMS in 2011 reveals that the earthquakes near Eupcheon fault did not show considerable changes in underground stress and displacement while the Tohoku earthquake occurred in March 2011 recorded abnormal strains and seismic wave patterns. However, it is required to employ a calibration system to serve more reliable data because the system is very sensitive to external parameters such as tides and temperature variations. The KHNP-CRI is planned to develop technical systems for data correction and analysis to predict the long-term characteristics and behavior of fault systems near the Eupcheon fault. We expect that the enhanced monitoring system will contribute significantly in geo-tectonic safety assessment of nuclear plants and other critical facilities related to the national security.

참고문헌 (Reference)

1 기원서, "읍천단층의 제4기 역단층운동 특성" 대한지질학회 43 (43): 311-333, 2007

2 이현우, "단층감시시스템 기술현황 분석" 대한지질공학회 21 (21): 87-95, 2011

3 Kim, Y.S., "Thrust geometries in unconsolidated Quaternary sediments and evolution of the Eupchon Fault, south, east Korea" 13 : 403-415, 2004

4 Roeloffs, E., "The Parkfield, California, Earthquake Experiment: An update in 2000" 79 (79): 10-, 2000

5 Miyakoshi, K., "Systematic Observation of Fault Activity, (1) Fault Activity Observing System" CRIEPI 54-, 1987

6 Wu, H.Y., "Stress orientations of Taiwan Chelungpu-Fault Drilling Project (TCDP) hole-A as observed from geophysical logs" 34 : 6-, 2007

7 Mark Zoback, "Scientific Drilling into the San Andreas Fault Zone-An Overview of SAFOD’s First Five Years" (11) : 14-28, 2011

8 Lee, J.C., "Monitoring active fault creep as a tool in seismic hazard mitigation: insights from creepmeter study at Chihshang, Taiwan" 337 : 1200-1207, 2005

9 Satake, Y., "Measurement of displacement along the Atotsugawa Fault" CRIEPI 31-, 1987

10 김경수, "KURT 미소진동 모니터링" 대한지질공학회 19 (19): 139-144, 2009