Epicenter location by abnormal ULF electromagnetic emissions
作者： Aimin Du , Qinghua Huang , Shaofeng Yang
DOI: 10.1029/2001GL013616
关键词:
摘要: [1] The epicenter location before earthquake is very important. We investigated the characteristics of ULF electromagnetic emissions, which were observed by an east-west chain at Kashi, Anxi, and Beijing stations ML = 7.1 Hetian earthquake, Xingjiang, China, on November 19, 1996. define polarization angle as between east direction geomagnetic field major axis ellipse, obtained filtered data two horizontal components. The source emissions probably coming from perpendicularly to related emissions. located cross directions that Kashi Anxi station 18, estimated consistent with event.
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