Analysis of Early Instrumental Earthquake data in Korea(1905-1942)

한국의 초기 계기지진 자료 분석(1905-1942)

In seismology, instrumental data is covering from the end of the last century and showing large uncertainties in earthquake parameters before 1960. The number and quality of seismological stations have been in steady increased over all the past decades of this century, and this development is still going on. In Korea, reliable instrumental data is only available since 1978 from KMA(Korea Meteorological Administration). However instrumental earthquake observation have started since 1905 by Japanese and seven seismic stations were in operation in 1941. We have compiled and analyzed the early instrumental earthquake data between 1905 and 1942. Total 533 events were analyzed and for 60 events, their epicentral coordinates and magnitude were determined