昆仑山口西8.1级地震易县台潮汐形变图像浅析
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摘要
用易县地震台潮汐形变观测资料分析了青海昆仑山口西 8.1级地震时同步出现的同震阶跃的特征。可以看出 ,DSQ型水管仪、VS型垂直摆、TJ 2C型体应变仪的同震阶跃呈负值变化 ,而SS Y型伸缩仪之EW分量和NE分量呈正值变化。
On the basis of the tidal observation data of Yixian station, this paper quantitatively describes the characteristics of the synchronous co-seismic step phenomenon of different observation measures when the %M%s8.1 earthquake ocurred in Kunlun Mountain Pass.It is indicated that the co-seismic steps of water tube tilt of DSQ type,vertical pendulum of VS type and body strain meter of TJ-2C type have tranformed in negative value and that of EW and NE branches of extensometer of SS-Y type have changed in positive value.
On the basis of the tidal observation data of Yixian station, this paper quantitatively describes the characteristics of the synchronous co-seismic step phenomenon of different observation measures when the %M%s8.1 earthquake ocurred in Kunlun Mountain Pass.It is indicated that the co-seismic steps of water tube tilt of DSQ type,vertical pendulum of VS type and body strain meter of TJ-2C type have tranformed in negative value and that of EW and NE branches of extensometer of SS-Y type have changed in positive value.
引文
1 李兴才,陈运泰.唐山地震引起的剩余倾斜场的空间分布和倾斜阶跃[J].地球物理学报,1984,6(1):13～20.
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2 LiLanshengandLiuJianhua.Analysisoffeatureandmech anismonanomalyofcoseismicstepchange[J].CrustalDe formationandEarthquake.1992,12(3):81-86.(inChi nese)
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3 ZhouKechangandWuYilin.Studyonfocalmechanismbyinversionofcoseismictiltsteps[J].CrustalDeformationandEarthquake.1990,10(1):13～20.(inChinese)
4 杨军.同震阶变研究在短临预报中的作用的探讨[J].地震学刊,1986(3):68～72.
4 YangJun.Explorationofthefunctionofcoseismicstepchangeinimpendingprediction[J].JournalofSeismology.1986(3):68-72.(inChinese)
5 陈德福著.地壳形变动力学观测与研究[M ].北京:海洋出版社,1993,166～173.
5 ChenDefu.Observationandresearchofcrustdeformationgeodynamics[M].Beijing:OceanPress,1993,166-173.(InChinese)
1 LiXingcaiandChenYuntai.ThespacedistributionandtiltstepchangeofresidualtiltfieldcausedbyTangshangEarth quake[J].ChineseJournalofGeophysics,1984,6(1):13-20.(inChinese)
2 李兰生,刘建华.同震阶变异常的特征与机理分析[J].地壳形变与地震,1992,12(3):81～86.
2 LiLanshengandLiuJianhua.Analysisoffeatureandmech anismonanomalyofcoseismicstepchange[J].CrustalDe formationandEarthquake.1992,12(3):81-86.(inChi nese)
3 周克昌,吴翼麟.由同震倾斜阶跃应用反演方法研究震源机制[J].地壳形变与地震,1990,10(1):13～20.
3 ZhouKechangandWuYilin.Studyonfocalmechanismbyinversionofcoseismictiltsteps[J].CrustalDeformationandEarthquake.1990,10(1):13～20.(inChinese)
4 杨军.同震阶变研究在短临预报中的作用的探讨[J].地震学刊,1986(3):68～72.
4 YangJun.Explorationofthefunctionofcoseismicstepchangeinimpendingprediction[J].JournalofSeismology.1986(3):68-72.(inChinese)
5 陈德福著.地壳形变动力学观测与研究[M ].北京:海洋出版社,1993,166～173.
5 ChenDefu.Observationandresearchofcrustdeformationgeodynamics[M].Beijing:OceanPress,1993,166-173.(InChinese)
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