降雨に伴う地電位差変動の検知と除去の試み

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/09/01

タイトル(英語): Detection and Reduction of Precipitation Effects in Geoelectrical Potential Difference Data

著者名: 斎藤　翔太（千葉大学大学院理学研究科），服部　克巳（千葉大学大学院理学研究科），戒田　大至（千葉大学大学院自然科学研究科），吉野　千恵（千葉大学大学院理学研究科），韓　鵬（千葉大学大学院理学研究科），（千葉大学大学院理学研究科）

著者名(英語): Shota Saito (Graduate School of Science, Chiba University), Katsumi Hattori (Graduate School of Science, Chiba University), Daishi Kaida (Graduate School of Science and Technology, Chiba University), Chie Yoshino (Graduate School of Science, Chiba University), Peng Han (Graduate School of Science, Chiba University), Febty Febriani (Graduate School of Science, Chiba University)

キーワード: 地電位差変動，降雨，主成分解析，特異スペクトル解析，検知　　geoelectrical potential difference，precipitation，principal component analysis，singular spectral analysis，detection

要約(英語): Geoelectrical fluctuations are the end product of several geophysical phenomena. In particular geoelectrical signals measured in seismically active areas can be attributed to stress and strain changes, associated with earthquakes. In order to study the geoelectrical potential difference changes associated with the earth's crustal activities, it is important to discriminate from other noises because they are generally weak. The complexity of this problem has suggested the development of advanced statistical methods to investigate the heterogeneous nature of these fluctuations. In this paper we analyzed the time dynamics of short-term variability of geoelectrical field measured at Kiyosumi station, located in southern part of Boso peninsula, Japan. We tried to apply principal component analysis (PCA) and singular spectral analysis (SSA) to detect and reduce precipitation effects which are the most intense noise in geoelectrical potential difference data. The results show an application of PCA to two orthogonal electric data can detect the precipitation and SSA has a potential to remove the precipitation effects.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.9 （2011） 特集：自然災害軽減のための電磁界技術

本誌掲載ページ: 738-743 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/131/9/131_9_738/_article/-char/ja/