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Anomalous density change of atmospheric ions is earthquake precursor

# Kiyoshi Wadatsumi[1], Go Yonezawa[1]

[1] OUS

http://www.pisco.ous.ac.jp/

Anomalous density change of atmospheric ions were observed prior to Hansin Earthquake. States of atmospheric air have continuously been observed positive and negative ions distributions and densites, using ion counter of Model KSI-3500. It analyzed atmospheric ions of the latest earthquake.
It recorded 4200(positive ions)-9000(negative ions) ions/cc in Western Tottori earthquake. It's five-ten times atmospheric ions of usually state. It's needed background from density change of atmospheric ions in the future.

論文・成果