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引用本文:张宏志,刁桂苓,赵英萍,王成亮,张骁,李光,马利军. ��̨�����������Դ����[J]. 大地测量与地球动力学, 2007, 27(6): 91-95
作者姓名:张宏志  刁桂苓  赵英萍  王成亮  张骁  李光  马利军
作者单位:1. 中国地震局地球物理研究所,北京,100081
2. 河北省地震局,石家庄,050021
3. 邯郸市地震局,邯郸,056014
4. 唐山市地震局,唐山,063000
基金项目:国家科技支撑计划重点项目
摘    要:?????????????????????????????????????????????????????????????????ε?????????????????????Σ????????????????????????????????????????????????????????????????????????????????????????????????????е?????????????????????????????????????????????????????????????????????????????????????????£???????????????????????ΣΣū??Σ??Σ????Σ?????????????????????????£??????????С????????м????????????????????????????????????????б????????????

关 键 词:???????  ???????  ?????????  ????????  ??????  
文章编号:1671-5942(2007)06-0091-05
收稿时间:2007-06-09
修稿时间:2007-06-09

RECENT FOCAL MECHANISM IN XINGTAI REGION
Zhang Hongzhi,Diao Guiling,Zhao Yingping,Wang Chengliang,Zhang Xiao,Li Guang,Ma Lijun. RECENT FOCAL MECHANISM IN XINGTAI REGION[J]. Journal of Geodesy and Geodynamics, 2007, 27(6): 91-95
Authors:Zhang Hongzhi  Diao Guiling  Zhao Yingping  Wang Chengliang  Zhang Xiao  Li Guang  Ma Lijun
Affiliation:1)InstituteofGeophysics,CEA,Beijing 100081 2)EarthquakeAdministrationofHebeiProvince,Shijiazhuang 050021 3)EarthquakeAdministrationofHandanCity,Handan 056014 4)EarthquakeAdministrationofTangshanCity,Tangshan 063000
Abstract:OnthebasisoftheobservationsfromthedigitalizedtelemetricseismicnetworkoftheCapitalarea and Handansince2002,focalmechanismsolutionsof96earthquakes(ML≥2.0)areinversedbyfittingtheob servedwaveformsunderthetheoreticalseismogram.Itshowsthat:1)Recentearthquakesaredistributedinconju gateconvergentbeltswithintheXingtaiseismicityregioneversince1966,whichcanbeconsideredasthecurrent stateoftheXingtaiearthquakesequences;2)Thepredominantstressaxisorientationoffocalmechanismisthesame asthatoftheforepartofXingtaiearthquakesequencesaswellasotherstrongearthquakesinNorthChina,itimplies thatthisregionwascontrolledbythesametectonicstressfieldasinwholeNorthChina;3)Thedominatenodal planeorientationsaremainlyindirectionsofNNE NEandNWW NW andconsistentwiththerupturedirectionof forepartearthquakesofXingtaiseismicsequences,itdemonstratestheinheritedseismicityofcurrentmoderateand smallearthquakes;4)Thediversityoffocalmechanism indicatesthatthelocaltectonicstressfieldisinlower state,anddifferentfromthefocalmechanismsofforepartofXingtaiearthquakesequences,sothepossibilityof strongearthquakeisnothigh.
Keywords:Xingtai region  focal mechanism  tectonic stress field  earthquake sequence  inherited seismicity
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