Principle component analysis of geomagnetic data associated with the 2011 Tohoku earthquake (Mw 9.0)

韓 鵬; 服部 克巳; 周 媛媛; 常 莹

講演情報

[EE] 口頭発表

セッション記号 M (領域外・複数領域) » M-IS ジョイント

[M-IS03] Interdisciplinary studies on pre-earthquake processes

2018年5月24日(木) 09:00 〜 10:30 A09 (東京ベイ幕張ホール)

コンビーナ:服部克巳(千葉大学大学院理学研究科)、劉正彦(国立中央大学太空科学研究所)、Ouzounov Dimitar(Center of Excellence in Earth Systems Modeling & Observations (CEESMO) , Schmid College of Science & Technology Chapman University, Orange, California, USA、共同)、Qinghua Huang(Peking University)、座長:Dimitar Ouzounov、Jann-Yenq Liu(National Central University, Taiwan)

10:00 〜 10:15

[MIS03-05] Principle component analysis of geomagnetic data associated with the 2011 Tohoku earthquake (Mw 9.0)

★Invited Papers

*韓鵬¹、服部克巳²、周媛媛¹、常莹¹ (1. 南方科技大学、2.千葉大学)

キーワード：Principle component analysis、geomagnetic data、the 2011 Tohoku earthquake

The seismo-magnetic phenomena associated with the 2011 Tohoku earthquake have been reported in a number of previous studies. To verify the geomagnetic diurnal variation changes and investigate absolute geomagnetic field variations related to this mega event, a principle component analysis (PCA) has been applied to the geomagnetic data observed in Japan. The PCA method enables one to decompose observations into different components which are orthogonal to each other and may originate from different sources. Thus it may be useful in revealing regional seimo-magnetic signals by eliminating the contributions of common global sources. The detailed results will be shown in our presentation.