三峡库首区重复重力资料的小波分解与构造活动
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摘要
对三峡库首区1989年8月以来的重力观测资料进行了小波分解。对分解结果的主要特征进行了描述, 并结合三峡库首区的构造活动特征对分解结果进行了解释:三峡地区的重力变化主要集中在一阶小波分解细节 中,说明三峡地区的重力场变化主要是由浅层物质密度变化引起的。对1997年8月10日测网右侧附近发生的 Ms3.7地震与重力小波分解结果的关系进行了讨论。
The gravity observation data obtained from the front area of the Three Gorges reservoir since Aug. 1989 are decomposed by wavelet method. The main characters of the decomposition results are described. The decomposition results combined with the tectonic activity characters of the area are explained. The 1st order wavelet decomposition details are main part of the gravity changes in Three Gorges area, which indicates that the gravity changes in the area are mainly result from the matter density changes in the upper part of the crust. The relation between the earthquake %M%s3.7 that occurred at the right side of the gravity network in Aug. 10th, 1997 and the wavelet decomposition results of gravity changes in the area is discussed.
The gravity observation data obtained from the front area of the Three Gorges reservoir since Aug. 1989 are decomposed by wavelet method. The main characters of the decomposition results are described. The decomposition results combined with the tectonic activity characters of the area are explained. The 1st order wavelet decomposition details are main part of the gravity changes in Three Gorges area, which indicates that the gravity changes in the area are mainly result from the matter density changes in the upper part of the crust. The relation between the earthquake %M%s3.7 that occurred at the right side of the gravity network in Aug. 10th, 1997 and the wavelet decomposition results of gravity changes in the area is discussed.
引文
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2 SongZhiping.WuAnxu.WangMei,etal.Applicationof wavelettransformtoanalysisofdigitaldeformationdata[J].JournalofGeodesyandGeodynamics,2003,23(4):21-27.(inChinese)
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3 WanYongge.QiFurong,MengXiaochun,etal.Wavelet analysisofseismicdatainChinesemainlandandNorthChina[J].JournalofGeodesyandGeodynamics,2003,23(4):28～33.(inChinese)
4 张燕,吴云,刘永启,等.潮汐形变资料中地震前兆信息的识别与提取[J].大地测量与地球动力学,2003.23(4):34～39.
4 ZhangYan,WuYun,LiuYongqi,etal.Identificationand extractionofearthquakeprecursorfromtidaldeformation data[J].JournalofGeodesyandGeodynamics,2003,23(4):34-39.(inChinese)
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9 邢灿飞,龚凯虹,杜瑞林.长江三峡工程地壳形变监测网络[J].大地测量与地球动力学,2003,23(1):114～118.
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10 袁登维,梅应堂,秦兴黎等.长江三峡工程坝区及外围地壳稳定性研究[M].武汉:中国地质大学出版社,1996.42～65.
10 YuanDengwei,MeiYingtang,QinXinglietal.There searchoncrustalstabilityinThreeGorgesandnearby area[M].Wuhan:PublishingHouseofChinaUniversi tyofGeosciences,1996.42-65.(inChinese)
11 谭周地,薄景山,等.中华人民共和国地质矿产部(六)水文地质工程地质第8号长江三峡工程库首区地壳稳定性评价与水库诱发地震预测[M].北京:地质出版社,1991:50～51.
11 TanZhoudi,BoJingshan,etal.People'sRepoblicofChi naministryofgeologyandmineralResourcesGeologyMemoirsseries6number8crusrstabiliotyevaluation andreservoirindeucedseismicpredictionforthefront regionofthesupposedreservoirintheThreeGorges project[M].Beijing:GeologicalPublishingHouse,1991:50-51.(inChinese)
12 贾民育,詹洁晖.中国地震重力监测体系的结构与能力[J].地震学报.2000,22(4):360～367.
12 JiaMinyuandZhanJiehui.Thestructureandabilityof theChinaseismologicalgravitymonitoringsystem[J].ActaSeismologicaSinica.2000,22(4):360-367.(inChinese)
13 WolfgangTorge.重力测量学[M].北京:地震出版社,1993,262～270.
13 WolfgangTorge.Gravimetry[M].Beijing:Seismologi calPress,1993,262-270.(inChinese)
1 FangShengming,ZhangXiankang,JiaShixu,eta1.Multi scaledecompositionofBouguergravityanomalyandseis micactivityinNorthChina[J].JournalofGeodesyandGeodynamics,2002,22(1):36-39.(inChinese)
2 宋治平.武安绪,王梅,等.小波分析方法在形变数字化资料处理中的应用[J].大地测量与地球动力学,2003,23(4):21～27.
2 SongZhiping.WuAnxu.WangMei,etal.Applicationof wavelettransformtoanalysisofdigitaldeformationdata[J].JournalofGeodesyandGeodynamics,2003,23(4):21-27.(inChinese)
3 万永革,齐福荣,孟晓春,等.中国大陆及华北地区地震资料的小波分析[J].大地测量与地球动力学,2003,23(4):28～33.
3 WanYongge.QiFurong,MengXiaochun,etal.Wavelet analysisofseismicdatainChinesemainlandandNorthChina[J].JournalofGeodesyandGeodynamics,2003,23(4):28～33.(inChinese)
4 张燕,吴云,刘永启,等.潮汐形变资料中地震前兆信息的识别与提取[J].大地测量与地球动力学,2003.23(4):34～39.
4 ZhangYan,WuYun,LiuYongqi,etal.Identificationand extractionofearthquakeprecursorfromtidaldeformation data[J].JournalofGeodesyandGeodynamics,2003,23(4):34-39.(inChinese)
5 候遵泽,杨文采.中国重力异常的小波变换与多尺度分析[J].地球物理学报,1998,41(5):642～651.
5 HouZunzeandYangWencai.Wavelettransformand multi scaleanalysisongravityanomaliesofChina[J].ActaGeophysicsSinica,1998,41(5):642-651.(inChinese)
6 孙少安,项爱民,李辉.长江三峡工程库首区重力场变化与构造活动[J].大地测量与地球动力学,2002,22(3):56～60.
6 SunShaoan,XiangAiminandLiHui.Changesofgravi tyfieldandtectonicactivityinfrontregionofthethree gorgesproject[J].JouurnalofGeodesyandGeodynam ics,2002,22(3):56-60.(inChinese)
7 刘少明,申重阳,孙少安,等.小波多尺度分解特征分析[J].大地测量与地球动力学,2004,24(2):34-41.(inChinese)
7 LiuShaoming,ShenChongyang,SunShaoan,etal..A nalysisofcharacteristicsofwaveletmulti scaledecompo sition[J].JouurnalofGeodesyandGeodynamics,2004,24(2):34-41.(inChinese)
8 陈学波,陈步云,张四维等.长江三峡工程坝区及外围深部构造特征研究[M].北京:地震出版社,1994.1～29.
8 ChenXuebo,ChenBuyun,ZhangSiwei,etal.There searchoncharacteristicsofthedeeptectonicsinThreeGorgesandnearbyarea[M].Beijing:SeismologicalPress,1994.1-29.(inChinese)
9 邢灿飞,龚凯虹,杜瑞林.长江三峡工程地壳形变监测网络[J].大地测量与地球动力学,2003,23(1):114～118.
9 XingCanfei,GongKaihong,DuRuilin.Crustaldeforma tionmonitoringnetworkforThreeGorgesprojectonYangtzeRiver[J].JournalofGeodesyandGeodynamics,2003,23(1):114-118.(inChinese)
10 袁登维,梅应堂,秦兴黎等.长江三峡工程坝区及外围地壳稳定性研究[M].武汉:中国地质大学出版社,1996.42～65.
10 YuanDengwei,MeiYingtang,QinXinglietal.There searchoncrustalstabilityinThreeGorgesandnearby area[M].Wuhan:PublishingHouseofChinaUniversi tyofGeosciences,1996.42-65.(inChinese)
11 谭周地,薄景山,等.中华人民共和国地质矿产部(六)水文地质工程地质第8号长江三峡工程库首区地壳稳定性评价与水库诱发地震预测[M].北京:地质出版社,1991:50～51.
11 TanZhoudi,BoJingshan,etal.People'sRepoblicofChi naministryofgeologyandmineralResourcesGeologyMemoirsseries6number8crusrstabiliotyevaluation andreservoirindeucedseismicpredictionforthefront regionofthesupposedreservoirintheThreeGorges project[M].Beijing:GeologicalPublishingHouse,1991:50-51.(inChinese)
12 贾民育,詹洁晖.中国地震重力监测体系的结构与能力[J].地震学报.2000,22(4):360～367.
12 JiaMinyuandZhanJiehui.Thestructureandabilityof theChinaseismologicalgravitymonitoringsystem[J].ActaSeismologicaSinica.2000,22(4):360-367.(inChinese)
13 WolfgangTorge.重力测量学[M].北京:地震出版社,1993,262～270.
13 WolfgangTorge.Gravimetry[M].Beijing:Seismologi calPress,1993,262-270.(inChinese)
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