地磁场变化的主成分分析(英文)
会议名称:《2019年中国地球科学联合学术年会》
会议日期:2019年
学科分类:070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学]
摘 要:To investigate possible geomagnetic field changes associated with the 2011 Tohoku earthquake (Mw 9.0), a principal component analysis (PCA) was employed to analyze the geomagnetic data registered at 15 stations in Japan for the time interval from 2000 to 2015. The PCs derived from high quality data of three JMA observatories are taken as