Open AccessEvaluation of the Applicability of the Chapman-Miller Method on Variation of the Geomagnetic Total Intensity Field in Taiwan from 1988 to 2007
Author(s) -
ChiehHung Chen,
Ching Ren Lin,
HsingLung Chao,
Horng Yuan Yen,
Jann Yenq Liu,
Y. Yeh
Publication year - 2009
Publication title -
terrestrial, atmospheric and oceanic sciences/terrestrial, atmospheric, and oceanic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.35
H-Index - 46
eISSN - 2223-8964
pISSN - 1017-0839
DOI - 10.3319/tao.2009.02.03.01(t
Subject(s) - earth's magnetic field , miller , variation (astronomy) , intensity (physics) , field (mathematics) , field intensity , environmental science , mathematics , geology , physics , magnetic field , astronomy , optics , nuclear magnetic resonance , paleontology , quantum mechanics , pure mathematics
The solar (S) and lunar (L) variations of geomagnetic fields at the horizontal (H), declination (D), and the downward vertical component data (Z) are modeled by the Chap man-Miller method with four order harmonics. In this paper, we compare S and L variations of the geomagnetic total intensity field using a consistent method with 3-component data for seasonal variations (summer, winter, and equinox) for three distinct phases during the years 1988 - 2007. The results show that consistency in the S and L variations for geomagnetic total intensity indicates normal stations and discrepancies are occurred due to data quality. In application, consistent results also prove that the function of the magnetometers at TW was normal and that large anomalies were certainly in existence during the Chia-Yi earthquake