河北张北地震区活动断裂的探测与研究
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摘要
1998年1月10日河北张北6.2级地震是河北省张家口坝上稳定地区的一次罕见的破坏性地震。震区被晚第三纪玄武岩覆盖,地面未发现第四纪活动断裂。为了研究震区地表活动断层,利用电磁波探测技术,以玄武岩底界面深度的变化来分析张北震区活动断裂,为此,在河北张北6.2级地震 度区范围进行了3条剖面探测,解释结果表明,震区存在北西向、北东向、北北东向3组第四纪活动断裂,张北6.2级地震发生在3组断裂的交汇区附近。
The Zhangbei earthquake(M＝62)of January 101998,is a rate devastating earthquake of the stable region on the Zhangjiakou dam.Thee seismic area is covered with the Basalt at Post-Tertiary Period.The active faults are indiscovered at the Quaternary Period,in the seismic area,For reserching to the active faults of the ground in the seismic area,It is applying the technique of electromagnetic wave detection that active faults of Zhangbei seismic area are analyzed with depth change in basalt bottom boumdary.For this reason we detected the three sectins in theⅧ intensity zone of the Zhangbei M62 earthquake.The result shows the three ground active faults at the Quaternary period that in the seismic area,they are respetively NWW,NNE and NE direction.The earthquake occurred in the vicinity of the intersection of the three ground faults.
The Zhangbei earthquake(M＝62)of January 101998,is a rate devastating earthquake of the stable region on the Zhangjiakou dam.Thee seismic area is covered with the Basalt at Post-Tertiary Period.The active faults are indiscovered at the Quaternary Period,in the seismic area,For reserching to the active faults of the ground in the seismic area,It is applying the technique of electromagnetic wave detection that active faults of Zhangbei seismic area are analyzed with depth change in basalt bottom boumdary.For this reason we detected the three sectins in theⅧ intensity zone of the Zhangbei M62 earthquake.The result shows the three ground active faults at the Quaternary period that in the seismic area,they are respetively NWW,NNE and NE direction.The earthquake occurred in the vicinity of the intersection of the three ground faults.
引文
海德拉巴 .印度地震引发一场争论 .参考消息 , 1 993 -1 0 -2 8(3 )
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[1] 蔡华昌,李孟銮,刁桂苓,等.张北地震宏观破坏与震害损失[A].国家地震局科技监测司.1998年张北地震[C],北京:地震出版社,1999.29-47.
[2] 张国民,张永仙.张北地震的科学问题和反思[A].国家地震局科技监测司.1998年张北地震[C],北京:地震出版社,1999.230-241.
[3] 国家地震局.中国地震烈度区划图[M].北京:地震出版社,1990.
[4] 河北地质学院水工系坝上水文队.汉诺坝玄武岩的时代归属[J].河北地质学院学报,1978(2):32-46.
[5] 蔡华昌,刁桂苓,刁建新,等.张北6.2级地震考察和灾害损失[J].华北地震科学,1998,16(1):48-54.
[6] 徐 伟,冉勇康.张北地震构造背景[A].国家地震局科技监测司.1998年张北地震[C],北京:地震出版社,1999.11-28.
[7] LinAiming,ZhaoGuochun,ZhaoGuozhe,etal.InferredSeismicFaultAssociatedwiththe1998M6.2Zhangbei-ShanyiEarthquake,HebeiProvince,China[J].BulleinoftheSeismologicalSocietyofAmerica,1999,89(2):550-554.
[8] 刁桂苓,张四昌,朱艾斓.张北6.2级地震发生在小震条带上[J].华北地震科学,1999,16(3):34-38.
[9] 高景春,胡 斌,张从珍.用相对定位法精细测定张北地震序列的时空参数[J].华北地震科学,1999,17(1):42-46.
[10] 河北省地质矿产局.河北天津市区域地质志[M].北京:地质出版社,1989.
[11] 冯家麟,谢漫泽,张改兰,等.汉诺坝玄武岩及其深源包体[J].河北地质学院学报,1982(1-2):45-83.
[12] FujiwaraTeruo,KonamiHiroshi,JinnalRyutaro.AvailabilityofGeophysicalProspectingUsingUltra-longWave[J].GeophysicalExplorationConferenceProceeding,1990(71):123-124.
[13] BurrelGA,PetersL.PulsePropagationinLossyMediaUsingtneLow-frequencyWindowforVideoPulseRadarApplication[J].ProceedingsofIEEE,1979,67(7):981-990.
[14] 谭绩文,刘亚民.汉诺坝玄武岩次生洞穴形成条件及其水文地质特征[J].河北地质学院学报,1983(3):23-35.
[15] 刘若新.中国新生代火山岩年代学与地球化学[M].北京:地震出版社,1992.
[16] 河北省地质局第三地质大队.地层[J].张家口地质.1980(2):86-87.
[17] 河北省地质局第三地质大队.岩浆岩[J].张家口地质.1980(2):101-104.
[18] 易明初,李 晓.燕山地区喜马拉雅运动及现今地壳稳定性研究[M].北京:地震出版社,1991.76-78.
[19] 王慧芬,戴 谟,范嗣昆,等.张家口汉诺坝玄武岩K—Ar年龄计时[J].地球化学,1985(3):206-215.
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