Investigation and prediction of the 2010 Maule, Chile earthquake by using GNSS on 25, 26 and 27 February 2010

Abstract

This study consists of processing (static-kinematic method) and analyzing data of two IGS stations that are part of the IGS network and are situated close to the epicenter of the Maule, Chile (February 27, 2010) earthquake. By analyzing the time series generated from daily solution two IGS stations, the displacements due to the earthquake were examined. When GNSS processing on 25-26 and February 27, 2010, especially for the Maule, Chile earthquake, are investigated, it is possible to interpret this situation as a precursor of the earthquake, as a result of the examination of the data obtained from the process of 25-26 February 2010. On 26 February 2010, the movement at the SANT, ANTC points before the earthquake was 0.18 m in the north-west direction, while it turned to the south-east direction on average 73 cm during and after the earthquake. The earthquake clearly had substantial impact on the horizontal components on February 27, 2010. The horizontal coordinates of SANT, ANTC stations have changed by around 21.5-73 cm and the height components have changes by around 2-4.2 cm based on the time series of coordinate discrepancies.