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引用本文:唐磊,邱泽华,阚宝祥.�й������Ӧ��̨���۲⵽�ĵ���������[J].大地测量与地球动力学,2007,27(6):37-44.
作者姓名:唐磊  邱泽华  阚宝祥
作者单位:中国地震局地壳应力研究所,北京,100085
基金项目:国家自然科学基金 , 地震科学联合基金
摘    要:???????й?????????????????????????????????????????????????????????????£??????????????????????????????????????????????????????????????????????????????????????????????У?????????????????????????????????????????????????????????????????????????λ???????????????? ???????????????????????????????????????????????????????????????

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文章编号:1671-5942(2007)06-0037-08
收稿时间:2007-06-05
修稿时间:2007年6月5日

EARTH'S SPHEROIDAL OSCILLATIONS OBSERVED WITH CHINA BOREHOLE DILATOMETER NETWORK
Tang Lei,Qiu Zehua,Kan Baoxiang.EARTH''''S SPHEROIDAL OSCILLATIONS OBSERVED WITH CHINA BOREHOLE DILATOMETER NETWORK[J].Journal of Geodesy and Geodynamics,2007,27(6):37-44.
Authors:Tang Lei  Qiu Zehua  Kan Baoxiang
Institution:(InstituteofCrustalDynamics,CEA,Beijing 100085)
Abstract:OnthebasisoftheobservationsbyTJboreholedilatometeratovertwentystationsofChinaBorehole DilatometerNetwork,theearth’sspheroidaloscillationsexcitedbythe26December2004Sumateraearthquakecan beextracted.Thestatisticanalysesofthesedataaredoneandmanyvibrationmodesareidentified.TheQvaluefor 0S9~0S16modesiscomputedandcomparedwiththatofPREMmodel,anditisfoundthattheresultsapproachto eachother.Theamplitudespectrumandphasespectrumofthe0S3~0S25spheroidaloscillationsrecordedatsixteen stationsaredrawn.Theresultsshowthattheamplitudesofthelowandmid frequencyspheroidaloscillationsare biggerthanthoseofthehigh frequencyspheroidaloscillations,however,allofthespectraatthestationsaredifferent fromeachother.
Keywords:borehole dilatometer  earth's free oscillations  spheroidal oscillation  quality factor  spectral analysis
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