Spheroidal Oscillations in the Earth Excited by the Wenchuan Earthquake

• 作 者: Ren Jia Chen Huajing Wang Song
• 机 构: ZhangjiakouEarthquakeObservatory,ChinaEarthquakeNetworksCenter,LijiangEarthquakeObservationStation
• 出 处: 中国地震研究：英文版
• 发表日期: 2009年4期
• 关键词: 地球自由振荡 测地球 地震 汶川 兴奋 球状 PREM模型 相对误差 Pendulum tilt-meter Water tube tilt-meter F
• 基金项目: ACKNOWLEDGMENTSThis research benefits from the advice of Wan Yongge, Hu Guoqing and Yu Haiying. PREM model data was provided by Wan Yongge. All earth tilt data is from the Earthquake Precursor Observa

Based on the digital observational data from pendulum tilt-meters and water tube tilt-meters, the spheroidal free oscillations of the Earth, excited by the M_S8.0 Wenchuan earthquake of May 12, 2008, were obtained using the method of power spectral densit