Detecting Earth’s Normal Modes of Free Oscillation After Large Earthquakes in GPS and Ocean Bottom Pressure Records
作者单位：Institute of Earth Sciences Academia Sinica
会议名称：《中国地球物理学会第二十九届年会》
会议日期：2013年
学科分类：081802[工学-地球探测与信息技术] 07[理学] 08[工学] 0708[理学-地球物理学] 081105[工学-导航、制导与控制] 0818[工学-地质资源与地质工程] 0804[工学-仪器科学与技术] 0811[工学-控制科学与工程]
摘 要：正Commonly viewed as propagating waves, seismic signals can equivalently be treated as standing waves, or elastic normal modes of free oscillation of a finite media that is the Earth. Such modes excited by large earthquakes have been observed since the 1960s by seismometers and gravimeters. Their observed periods