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http://dx.doi.org/10.7848/ksgpc.2012.30.5.477

Monitoring the Crustal Movement Before and After the Earthquake By Precise Point Positioning - Focused on 2011 Tohoku Earthquake -  

Kim, Min Gyu (충남대학교 측량및지형정보연구실)
Park, Joon Kyu (서일대학 토목과)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.30, no.5, 2012 , pp. 477-484 More about this Journal
Abstract
Recently, as earthquake is more frequently taking place around the world due to diastrophism, the importance of diastrophism and disaster detection is becoming more important. In this study, to analyze the interpretation of seismic displacement by the Japanese earthquake in March, 2011, and monitor the diastrophism of plates in Japan and surrounding Eurasia, Pacific, and Philippines before and after the earthquake, the observational data from IGS observatories in Japan and Asian regions were processed by precise point positioning. The displacement was biggest in MIZU, which was the closest to the epicenter, and the earthquake-affected region was in inverse proportion to the distance from the epicenter. The result of calculating the diastrophism speed before and after the earthquake, based on precise point positioning of IGS observatories located in the 4 plates around Japan, showed that the displacement speed changed and different plates showed different results. The comparison with the plate fate model allowed to analyze the change in diastrophism by earthquake, and to understand the characteristics of the displacement of the plates around Japan. Later, a continuous diastrophism monitoring based on GPS is needed for earthquake prediction and diastrophism research, and the data gained by continuous GPS-based monitoring of diastrophism will be fully used as basic data for relevant research and earthquake disaster management.
Keywords
GPS; IGS CORS; Precise Point Positioning; Crustal Movement Monitoring; Plate Motion Model;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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