援印尼地震监测台网及其自动定位系统效能评估
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摘要
本文首先对援印尼地震监测台网及数据处理系统的构建作了简要的介绍。在此基础上对该台网系统的监测能力作了评估,并选取试运行以来记录到的印尼地区32次大地震事件,将系统自动产出的定位结果和USGS公布的结果进行了比对分析。结果表明,援建台网地震自动定位系统运行稳定,对大地震的自动定位结果基本可信。实现了2分钟以内对印尼境内及周边一些区域的强震自动产出首次定位结果并发出强震警报,3～4分钟左右完成较精确的自动定位,对于印尼地区6级以上地震,自动定位系统可在5分钟内给出较精确的地震三要素。援建系统不仅提高了印尼及周边区域的地震监测能力、地震定位精度以及地震速报能力,也为其海啸预警提供了有效保障。
This paper first briefly introduces the construction of Indonesia-China Digital Seismographs Network(ICDSN) and data processing system.Then we evaluate seismic monitoring capability.Selecting the seismic data of 32 large earthquakes in Indonesian region from 2009 from the,the automatic location results of ICDSN and USGS published results are compared and analyzed.The results show that the automatic location system of ICDSN is stable in operation,automatic location results for large earthquakes are basically credible.It can output primary location result and warning of large earthquakes in Indonesia or surrounding areas in 2 minutes.It takes 3~4 minutes for accurate results.For earthquakes with magnitude above 6,it takes 5 minutes for accurate results.ICDSN not only improves seismic monitoring capability,earthquake location accuracy and earthquake quick report of Indonesia,but also provides effective guarantee for tsunami warning.
This paper first briefly introduces the construction of Indonesia-China Digital Seismographs Network(ICDSN) and data processing system.Then we evaluate seismic monitoring capability.Selecting the seismic data of 32 large earthquakes in Indonesian region from 2009 from the,the automatic location results of ICDSN and USGS published results are compared and analyzed.The results show that the automatic location system of ICDSN is stable in operation,automatic location results for large earthquakes are basically credible.It can output primary location result and warning of large earthquakes in Indonesia or surrounding areas in 2 minutes.It takes 3~4 minutes for accurate results.For earthquakes with magnitude above 6,it takes 5 minutes for accurate results.ICDSN not only improves seismic monitoring capability,earthquake location accuracy and earthquake quick report of Indonesia,but also provides effective guarantee for tsunami warning.
引文
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[4]陈贵美,刘锦,刘军,等.数字地震台网对不同区域地震事件的震中定位研究[J].华北地震科学,2010,28(1):59-64.
[5]王平,狄秀玲,李少睿,等.用爆破事件检验区域数字地震台网常规地震定位方法的定位精度[J].地震地磁观测与研究,2006,27(3):25-28.
[2]Geiger L.Probability method for the determination of earthquake epicenters from the arrival time only[J].Bulletin St Louis University,1912,8:60-71.
[3]梁向军,董春丽,张蕙.基于“十五”测震分析处理软件MSDP的多种地震定位方法[J].地震地磁观测与研究,2012,33(3/4):318-323.
[4]陈贵美,刘锦,刘军,等.数字地震台网对不同区域地震事件的震中定位研究[J].华北地震科学,2010,28(1):59-64.
[5]王平,狄秀玲,李少睿,等.用爆破事件检验区域数字地震台网常规地震定位方法的定位精度[J].地震地磁观测与研究,2006,27(3):25-28.
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