Long-Term Seafloor Electromagnetic Observation in the Northwest Pacific May Detect the Vector Geomagnetic Secular Variation

Data Science Journal

T. Goto²  H. Toh¹  H. Utada³  Y. Hamano⁴ 

[1] Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science, Kyoto University;Department of Civil and Earth Resources Engineering, Graduate School of Engineering, Kyoto University;Ocean Hemisphere Research Center, Earthquake Research Institute, University of Tokyo;Basic Research Program, IFREE, JAMSTEC

关键词: Seafloor geomagnetic observatories;    Attitude monitoring;    Geomagnetic secular variations;    Westward drift;    Equatorial dipole;   

DOI  :  10.2481/dsj.SS_IGY-004

学科分类：计算机科学（综合）

来源: Ubiquity Press Ltd.

【 摘 要 】

References(25)Sea Floor ElectroMagnetic Stations (SFEMSs) are now operating at two deep seafloor sites called the 'WPB' and the 'NWP' in the West Philippine Basin and the Northwest Pacific Basin, respectively. One of the main objectives of the SFEMSs is to detect the geomagnetic secular variations on the deep seafloor where long-term geomagnetic observations have not so far been achieved. SFEMSs can measure the absolute geomagnetic total force as well as the geomagnetic vector field with precise attitude monitoring systems. The vector geomagnetic time-series that was observed for more than 5 years revealed that the westward drift of the equatorial dipole dominates in the geomagnetic secular variation at the NWP.

【 授权许可】

Unknown