“十五”期间，为完善与强化首都圈的地震监测和天津测震台网的地震速报能力，天津数字测震台网在原有数字遥测台基础上，新建及改造升级了部分测震台站，并建立了环渤海虚拟监测台网，以加强对环渤海地区的地震监测。建成后丰富了记录信息量，提高了观测动态范围，地震监测能力明显提高，速报能力得到进一步加强。

 During the “tenth five-year"Plan, based on orginal seismic stations of Tianjin digital seismic network, Some seismic stations were constructed and upgraded for improving the fast determination of earthquake parameters and seismic monitoring.Virtual earthquake network of Bohai rim was set up in order to strength the monitoring of bohai region. With the increasing of number and density of stations, the network monitoring capability and fast determination of earthquake parameter are improved,in the meanwhile, the observation range is broadened.