F子夜均值逐日差空间异常变化与地震的关系研究
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摘要
利用2010年1月1日至2014年4月30日我国地磁台网100多个台站的地磁总强度F子夜均值数据,逐一分析了F子夜均值逐日差的空间变化趋势。结果表明,在此期间有18次小区域的异常变化,其中16次异常与其后几天到半年时间内该区域发生的地震有很好的对应关系,另外两次新近的异常有待后续进一步验证。我国西北部地区地磁台站稀疏,布局不合理,限制了对新疆、青海、西藏等地震多发区震磁关系的研究,建议这些地区进一步加密台站建设,优化布局。
Based on the daily geomagnetic absolute averages of geomagnetic total intensity F at local midnight recorded by more than 100 stations in China Geomagnetic Netw ork from Jan. 1,2010 to Apr. 30,2014,we analyzed the spatial variation characteristic of daily geomagnetic field F. The results show that there were 18 times abnormal changes of geomagnetic field in small region in the study period,the 16 times abnormal changes of them had the good corresponding relationship with the earthquake which occurred from a few days to six months after the abnormal changes in the study area,and the other tw o new ly abnormal changes should still be observed and verified. The distribution of stations is sparse and their layout is unreasonable in Northw estern region of China,which limited studying the seismic-magnetic relationship in earthquake-prone zones,such as Xinjiang,Qinghai,Tibet etc.. It is suggest that we should make stations density and optimize their layout.
Based on the daily geomagnetic absolute averages of geomagnetic total intensity F at local midnight recorded by more than 100 stations in China Geomagnetic Netw ork from Jan. 1,2010 to Apr. 30,2014,we analyzed the spatial variation characteristic of daily geomagnetic field F. The results show that there were 18 times abnormal changes of geomagnetic field in small region in the study period,the 16 times abnormal changes of them had the good corresponding relationship with the earthquake which occurred from a few days to six months after the abnormal changes in the study area,and the other tw o new ly abnormal changes should still be observed and verified. The distribution of stations is sparse and their layout is unreasonable in Northw estern region of China,which limited studying the seismic-magnetic relationship in earthquake-prone zones,such as Xinjiang,Qinghai,Tibet etc.. It is suggest that we should make stations density and optimize their layout.
引文
白春华,徐文耀,康国发.2008.地球主磁场模型[J].地球物理学进展,23(4):1045-1057.
王建军,杨冬梅,张素琴,等.2010.地磁数据预处理质量标注系统[J].地震地磁观测与研究,31(5):85-90.
张建国,陈化然,刘晓灿.2009.地磁场子夜均值逐日动态演化特征及与汶川大地震关系研究[J].国际地震动态,(7):31-34.
Chen C.H.,Liu J.Y.,Yen H.Y.,et al..2004.Changes of GeomagnetiTotal Field,Occurrences of Earthquakes in Taiwan[J].TAO,15(3):3361-370.
Freund F..2000.Time Resolved Study of Charge Generation and Propagation in Igneous Rocks[J].J.Geophys.Res.105:11001–11019.
Hattori K.,Takahashi I.,Yoshino C.,et al..2004.ULF GeomagneticField Measurements in Japan and Some Recent Results Associatedwith Iwateken Nairiku Hokubu Earthquake in 1998[J].Phys ChemEarth,29(4-9):481–494.
Hayakawa M..1999.Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes[M].Tokyo,Terra ScientificPublishing Company.
Hayakawa,M.,Fujinawa Y.Eds..1994.Electromagnetic Phenomena Related to Earthquake Prediction[M].Tokyo:TERRAPUB,667.
Yen H.Y.,Chen C.H.,Yeh Y.H.,et al..2004.Geomagnetic fluctuations during the 1999 Chi-Chi earthquake in Taiwan[J].Earth Planets Space,56:39–45.
Molchanov O.A.,Hayakawa M..1998.Subionospheric VLF Signal Perturbations Possibly Related to Earthquakes[J].J.Geophys.Res.,103(17),489–17:504.
Newitt L R.,Barton C.E.,Bitterly J..1996.Guide for Magnetic RepeatStation Surveys[M].325 Broadway,Boulder,CO USA.,International Association of Geomagnetism and Aeronomy J.NOAA Space Environment Center.
Pulinets S.A..1998.Seismic Activity as a Source of Ionospheric Variability[J].Adv.Space Res.,22(6):903-906.
Sabaka T.J.,Olsen N.,Purucker M.2004.Extending ComprehensiveModels of the Earth's Magnetic Field with Oersted and CHAMP[J].Geophys J Int.,159(2):521–547.
Schulz G.,Beblo M..1984.On the Reduction of Time Variations forMagnetic Repeat Station Measurements[J].Geophysical Surveys,6(3-4):323-332.
Zeng X.P.,Lin Y.,Xu C.,et al..2001.Turning Changes in Evolution ofGeomagnetic Field and Infrastructural Analysis of Earthquake Prediction[J].Kybernetes-Int.J.Systems&Cybernetics,30:365-377.
王建军,杨冬梅,张素琴,等.2010.地磁数据预处理质量标注系统[J].地震地磁观测与研究,31(5):85-90.
张建国,陈化然,刘晓灿.2009.地磁场子夜均值逐日动态演化特征及与汶川大地震关系研究[J].国际地震动态,(7):31-34.
Chen C.H.,Liu J.Y.,Yen H.Y.,et al..2004.Changes of GeomagnetiTotal Field,Occurrences of Earthquakes in Taiwan[J].TAO,15(3):3361-370.
Freund F..2000.Time Resolved Study of Charge Generation and Propagation in Igneous Rocks[J].J.Geophys.Res.105:11001–11019.
Hattori K.,Takahashi I.,Yoshino C.,et al..2004.ULF GeomagneticField Measurements in Japan and Some Recent Results Associatedwith Iwateken Nairiku Hokubu Earthquake in 1998[J].Phys ChemEarth,29(4-9):481–494.
Hayakawa M..1999.Atmospheric and Ionospheric Electromagnetic Phenomena Associated with Earthquakes[M].Tokyo,Terra ScientificPublishing Company.
Hayakawa,M.,Fujinawa Y.Eds..1994.Electromagnetic Phenomena Related to Earthquake Prediction[M].Tokyo:TERRAPUB,667.
Yen H.Y.,Chen C.H.,Yeh Y.H.,et al..2004.Geomagnetic fluctuations during the 1999 Chi-Chi earthquake in Taiwan[J].Earth Planets Space,56:39–45.
Molchanov O.A.,Hayakawa M..1998.Subionospheric VLF Signal Perturbations Possibly Related to Earthquakes[J].J.Geophys.Res.,103(17),489–17:504.
Newitt L R.,Barton C.E.,Bitterly J..1996.Guide for Magnetic RepeatStation Surveys[M].325 Broadway,Boulder,CO USA.,International Association of Geomagnetism and Aeronomy J.NOAA Space Environment Center.
Pulinets S.A..1998.Seismic Activity as a Source of Ionospheric Variability[J].Adv.Space Res.,22(6):903-906.
Sabaka T.J.,Olsen N.,Purucker M.2004.Extending ComprehensiveModels of the Earth's Magnetic Field with Oersted and CHAMP[J].Geophys J Int.,159(2):521–547.
Schulz G.,Beblo M..1984.On the Reduction of Time Variations forMagnetic Repeat Station Measurements[J].Geophysical Surveys,6(3-4):323-332.
Zeng X.P.,Lin Y.,Xu C.,et al..2001.Turning Changes in Evolution ofGeomagnetic Field and Infrastructural Analysis of Earthquake Prediction[J].Kybernetes-Int.J.Systems&Cybernetics,30:365-377.
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