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EARTHQUAKE ›› 1999, Vol. 19 ›› Issue (2): 142-148.

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STUDY OF ELECTROMAGNETIC RADIATION MEASURED AT HUAILAI STATION HEBEI PROVINCE AND ITS CORRELATION TO EARTHQUAKE

Guan Huaping1), Zhang Hongkui2), Lu Yue2), Yu Surong1), Chen Zhiyong3)   

  1. 1)Center for Analysis and Prediction, CSB, Beijing 100036, China;
    2)Seismological Bureau of Beijing Municipality, Beijing, 100039, China;
    3)Seismological Bureau of Langfang City, Langfang 065000, China
  • Received:1998-04-27 Revised:1998-05-27 Online:1999-04-30 Published:2022-09-19

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Abstract: Ultra-low frequency EM radiation continuously recorded data for 11 years at Huailai station, Hebei Province are analyzed. The anomalous changeprior to Zhangbei-Shang yi earthquake (Ms 6.2), and those prior to earthquakes with Ms≥ 5. 0, with an epicentral dis-tance of less than 300 km are studied. The result shows that the amount of the anomalous change, the starting time and duration, have close relation to the epicentral distance and magnitude of an earthquake. The anomalous change reaches the maximum value prior to earthquakes.

Key words: Electromagnetic radiation, Anomaly, Epicentral distance, Ultra-low frequency electric field