长白山天池火山地震预警台网布局探讨
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摘要
大多数火山口处的地震震源深度都非常浅,振幅也较小。因此,长白山天池火山地震监测台网的建设应满足以下三点要求。一要突出火山区小震和火山颤动的监测能力;二要突出火山地震与构造地震的分辨能力;三要考虑天池火山区的特殊地理环境特点。根据上述原则,分析在长白山天池火山区0～60 km范围内18个测震台站的布局及台网的监测效能,进一步为火山地震监测、预警、预报研究提供基础信息。
Focal depths of majority of earthquakes at crater are very shallow and amplitudes are also small,therefore,Tianchi volcano seismic monitoring network construction should meet the following three requirements.First one is that the network must have monitoring capacity for small earthquakes and volcanic tremor in volcanic region.Secondly,network must have high resolution for volcanic earthquakes and tectonic earthquakes.Thirdly,the special geography of Tianchi volcano must be seriously counted.According to the requirements above,layout and monitoring performance of 18 seismic stations in range of 0～60 km range in Tianchi volcano of Changbai Mountain are analyzed,which will provides basic information for earthquake monitoring,early warning and prediction study.
Focal depths of majority of earthquakes at crater are very shallow and amplitudes are also small,therefore,Tianchi volcano seismic monitoring network construction should meet the following three requirements.First one is that the network must have monitoring capacity for small earthquakes and volcanic tremor in volcanic region.Secondly,network must have high resolution for volcanic earthquakes and tectonic earthquakes.Thirdly,the special geography of Tianchi volcano must be seriously counted.According to the requirements above,layout and monitoring performance of 18 seismic stations in range of 0～60 km range in Tianchi volcano of Changbai Mountain are analyzed,which will provides basic information for earthquake monitoring,early warning and prediction study.
引文
[1]匡增桂,郭忻.地震火山地层学研究综述[J].海洋地质动态,2010,26(2):19-24.
[2]Fan Qicheng,Liu Ruoxin,Zhang Guohuiet al.The Genesisand Evolution of Bimodal Volcanic Rocks in Wantiane Vol-cano,Changbaishan[J].Acta Petrologica Silica,1998,14(3):305-317.
[3]傅容珊,李力刚,郑大伟,等.核幔边界动力学—地球自转十年尺度波动[J].地球科学进展,1999,14(6):1-3.
[4]武成智,吴艳锐,刘俊清.长白山天池火山监测与灾害防御[J].山西地震,2009(3):38-42.
[5]张先康,张成科,赵金仁,等.长白山天池火山区岩浆系统深部结构的深地震观测研究[J].地震学报,2002,24(2):135-143.
[6]吴建平,明跃红,刘一鸣,等.2002年8月20日长白山天池火山小震震群研究[J].地震地磁观测与研究,2003,24(4):1-7.
[7]李克,刘俊清,盘晓东,等.2000—2007年期间长白山天池火山区地壳变形监测与分析[J].地震地质,2009,31(4):639-646.
[2]Fan Qicheng,Liu Ruoxin,Zhang Guohuiet al.The Genesisand Evolution of Bimodal Volcanic Rocks in Wantiane Vol-cano,Changbaishan[J].Acta Petrologica Silica,1998,14(3):305-317.
[3]傅容珊,李力刚,郑大伟,等.核幔边界动力学—地球自转十年尺度波动[J].地球科学进展,1999,14(6):1-3.
[4]武成智,吴艳锐,刘俊清.长白山天池火山监测与灾害防御[J].山西地震,2009(3):38-42.
[5]张先康,张成科,赵金仁,等.长白山天池火山区岩浆系统深部结构的深地震观测研究[J].地震学报,2002,24(2):135-143.
[6]吴建平,明跃红,刘一鸣,等.2002年8月20日长白山天池火山小震震群研究[J].地震地磁观测与研究,2003,24(4):1-7.
[7]李克,刘俊清,盘晓东,等.2000—2007年期间长白山天池火山区地壳变形监测与分析[J].地震地质,2009,31(4):639-646.
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