三峡水库巴东地区的地震活动分析
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摘要
三峡巴东库段及邻区的地震活动在时间、空间和强度上的变化主要是由水库蓄水引起的。经对地震基础资料及波形特征的分析后认为:区内地震活动可分为天然构造地震和非构造地震两种成因类型,其中后者包括溶洞塌陷地震、矿洞塌陷地震和山体崩滑地震等。
In Badong alongshore zone of the Three Gorges reservoir and its adjacent regions,the changes of seismicity and strength are caused by the impoundment of the Three Gorges reservoir.According to the basic seismic data and characteristic of wave,the earthquakes in this area can be distinguished into tectonic earthquake and atectonic earthquake.The latter includes karst collapse,mining collapse and hill collapse and all of them are caused by water action of reservoir i.e.they are reservoir-induced earthquake.
In Badong alongshore zone of the Three Gorges reservoir and its adjacent regions,the changes of seismicity and strength are caused by the impoundment of the Three Gorges reservoir.According to the basic seismic data and characteristic of wave,the earthquakes in this area can be distinguished into tectonic earthquake and atectonic earthquake.The latter includes karst collapse,mining collapse and hill collapse and all of them are caused by water action of reservoir i.e.they are reservoir-induced earthquake.
引文
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4荻莉莎,等.长江三峡地区巴东野三关地震成因探讨[J].大地测量与地球动力学,2007,27(专刊):62-67.4Di Lisha,et al.On genesis of Yeshnguan micro-earth-quakes in Three Gorges area on Yangtze river[J].Journal of Geodesy and Geodynamics,2007,27(Special):62-67.(in Chinese)
5李胜乐,等.长江三峡水库蓄水后的首发微震群活动[J].大地测量与地球动力学,2003,23(4):75-79.5Li Shengle,et al.First microquake swarm activity since storage in Three Gorges reservoir[J].Journal of Geodesy and Geodynamics,2003,23(4):75-79.(in Chinese)
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7王墩,等.三峡水库重点监视区蓄水前后震源机制解研究[J].大地测量与地球动力学,2007,27(5):103-107.7Wang Dun,et al.Focal mechanism of key monitoring area of Three Gorges reservoir before and after impoundment[J].Journal of Geodesy and Geodynamics,2007,27(5):103-107.(in Chinese)
2李安然,等.峡东工程地震[M].北京:地震出版社,1996.2Li Anren,et al.The engineering earthquake in eastern Yan-gtze Gorges[M].Beijing:Seismological Press,1996.(in Chinese)
3袁登维,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,1996.3Yuan Dengwei,et al.Crustal stability in and around the dam region of the Three Gorges Project on the Yangtze river[M].Wuhan:China University of Geosciences Press,1996.(in Chinese)
4荻莉莎,等.长江三峡地区巴东野三关地震成因探讨[J].大地测量与地球动力学,2007,27(专刊):62-67.4Di Lisha,et al.On genesis of Yeshnguan micro-earth-quakes in Three Gorges area on Yangtze river[J].Journal of Geodesy and Geodynamics,2007,27(Special):62-67.(in Chinese)
5李胜乐,等.长江三峡水库蓄水后的首发微震群活动[J].大地测量与地球动力学,2003,23(4):75-79.5Li Shengle,et al.First microquake swarm activity since storage in Three Gorges reservoir[J].Journal of Geodesy and Geodynamics,2003,23(4):75-79.(in Chinese)
6李峰,等.三峡库区巴东马鬃山地振动观测与成因讨论[J].大地测量与地球动力学,2004,24(2):78-82.6Li Feng,et al.On observation of earth shocks and its gene-sis in Mazongshan of Badong in Three Gorges reservoir[J].Journal of Geodesy and Geodynamics,2004,24(2):78-82.(in Chinese)
7王墩,等.三峡水库重点监视区蓄水前后震源机制解研究[J].大地测量与地球动力学,2007,27(5):103-107.7Wang Dun,et al.Focal mechanism of key monitoring area of Three Gorges reservoir before and after impoundment[J].Journal of Geodesy and Geodynamics,2007,27(5):103-107.(in Chinese)
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