【摘 要】
：
The "double low-points" anomaly in daily variation of vertical geomagnetic component was observed on May 9,2008 at 13 geomagnetic observatories belonging to the geomagnetic observatory network center
【出 处】
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Earthquake Science
论文部分内容阅读
The "double low-points" anomaly in daily variation of vertical geomagnetic component was observed on May 9,2008 at 13 geomagnetic observatories belonging to the geomagnetic observatory network center of China Earthquake Administration.These observatori
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