Figure 1. (IMAGE) Science China Press Caption The histograms of the original GPS locations recorded by two seismic stations. The (a) longitude and (b) latitude distributions of station 251 located on an outcrop during the period 2020/01/01–2020/01/30, the black dashed ellipses represent 2.5 standard deviations. The (c) longitude and (d) latitude distributions of station 250 located on the Larsemann Hills ice sheet during 2019/12/06–2019/12/27. The red and green histograms represent the GPS data at the beginning and end of the observation period, respectively. Credit ©Science China Press Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.