利用DEMETER卫星数据研究武都—文县5.0级地震
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摘要
简单介绍了法国DEMETER(detection of electro-magnetic emissions transmitted fromearthquake regions)地震电磁卫星的科学任务,以及所搭载载荷和观测模式。利用卫星观测资料研究了2006年6月20日16点52分(UT时间)发生在我国甘肃境内的5.0级地震。结果发现,在此次震前第5天电离层就开始出现异常现象,在震前大约1~2天时,这种异常达到最大。最后简述了发展卫星观测所面临的挑战和机遇。
In this paper,the authors simply introduce the DEMETER(detection of electro-magnetic emissions transmitted from earthquake regions)satellite about its scientific objectives,payloads and observation modes.Using the DEMETER data,they have studied Wudu-Wenxian earthquake with M5.0 in Gansu province.The results indicate that ionospheric electromagnetic disturbance appeared at the fifth day before the earthquake,and the disturbance phenomena reach the most about 1~2 days before the earthquake.Finally,the challenges and opportunities have been discussed in developing the satellite observation.
引文
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