jgg     2015 35 (3):  401-405    ISSN: 0412-1961  CN: 21-1139/TG The Fractal Characters of the Low Frequency Residual’s Space  Distribution of Continuously Monitoring GPS Sites 1 Department of Earthquake Prediction of China Earthquake Networks Center，5 Nanheng Street, Beijing 100045，China Received: 2013-12-30  Revised: null  Online: 2015-06-02 Supporting info