Noise Analysis and Performance of the MEMS accelerometers in Shandong early warning station network

In Shandong Province, 1230 MEMS accelerometers are deployed, and the site density is among the highest in China. Noise Analysis and Performance of the MEMS accelerometers can effectively guide the selection of site equipment in other early warning system. According to noise Analysis and calculation of earthquake monitoring capacity, the following conclusions are drawn : 1) MEMS accelerometer can meet the needs of earthquake early warning of Shandong early warning station network. 2) The station noise value in 95 % of all MEMS accelerometers is less than -68.5 dB. 3) The accelerometer monitoring capability in 95 % area reaches ML4.0. 4) All MEMS accelerometers effectively recorded seismic signals during the M5.5 earthquake in Shandong Pingyuan County and the first earthquake early warning information output is in 5 seconds after the earthquake.