Preliminary Study on the Plate Motion in Korean Peninsula with New Korean VLBL Array

Astronomy and Astrophysics – Astronomy

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Vlbi, Gps, Amurian Plate, Plate Motion, Kvn

Scientific paper

Korean Peninsula has been postulated to be on the Eurasian plate(EU). On the other hand, recent seismological works and GPS researches suggest that it is on a separate plate called the Amurian plate (AM). However, the GPS results are inconsistent with each other beyond the estimated statistical errors. Moreover, the estimated plate motion parameter, which we obtained from the velocity data of six Korean GPS stations, was not well agreeing with any existing results. Therefore, independent measurements are required to distinguish those results. In near future, we will have 4 VLBI stations in Korea. This compact Korean VLBI array is capable of achieving good determination of the plate motion parameters if it is located on stable sites. We estimated the precision of the AM motion parameters with the Korean VLBI array. The results showed that the Korean VLBI array would verify the existence of the AM, as far as the observation precision of 0.2 - 0.5 mm/yr for station velocitie!
s is achieved. Therefore, new Korean geodetic VLBI array can contribute to crustal deformation studies in East Asia.

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