Establishment of Gravity Base over Larsemann Hills in Antarctica

During the Antarctic summer of 2008-2009,China's the 25th Antarctic scientific expedition team established the high precision gravity base network over Zhongshan Station and its neighboring area Larsemann Hills in Antarctica,using A-10 portable absolute gravimeter and LaCoste & Romberg G relative gravimeter.The network is composed of three absolute gravity stations and 10 relative gravity points.The accuracy of absolute and relative gravimetry is better than 7.5×10-8 m·s-2 and 20×10-8 m·s-2 respectively.