ULF electromagnetic phenomena induced by underground activities in Izu and Boso Peninsula, Japan during 2000–2010

Author

Hattori, Katsumi ; Han, Peng ; Ishikawa, Hisashi ; Hirano, Takuya ; Ishiguro, Yuki ; Febriani, Febty ; Yoshino, Chie

Author_Institution

Grad. Sch. of Sci., Chiba Univ., Chiba, Japan

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

2

Abstract

Recently electromagnetic phenomena have been considered as a promising candidate for short-term earthquake prediction. In this study, we have investigated ULF (Ultra Low Frequency) electromagnetic phenomena possibly associated with underground activities in Izu and Boso Peninsula, Japan during 2000-2010. Daily average energy of geomagnetic signals at the frequency around 100Hz has been examined, and geomagnetic diurnal variation at each station has been investigated. It is found that there are highly confirmed anomalous electromagnetic signals during the 2002 and the 2007 slow slip events in Boso Peninsula. And geomagnetic diurnal variations observed at Boso Peninsula also exhibit unusual behaviors before the 2005 M6.1 and M6.0 earthquakes.

Keywords

earthquakes; geomagnetic variations; AD 2000 to 2010; Boso Peninsula; Izu Peninsula; Japan; ULF electromagnetic phenomena; anomalous electromagnetic signals; electromagnetic phenomena; geomagnetic diurnal variation; geomagnetic signals; short-term earthquake prediction; slow slip events; ultra low frequency; underground activities; Conductivity; Earthquakes; Educational institutions; Electromagnetics; Ionosphere; Observatories; Principal component analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6050948

Filename

6050948