THE GEOMAGNETIC ANOMALIES BEFORE MEDIUM EARTHQUAKES IN HEBEI PROVINCE AND ITS ADJACENT AREA
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Graphical Abstract
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Abstract
the geomagnetic anomalies before a group of earthquakes occurred in Hebei Province and its adjacent area in Jul.of 2001 are presented.Some extent prediction was given before one earthquake.Through analysis to the relation of anomalies with earthquake,it is conclude that the geomagnetic anomalies indicate not only stronger earthquakes,but also the earthquakes in relatively calm period.
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