Evaluation of the applicability of the Chapman-Miller method on variation of the geomagnetic total intensity field in Taiwan from 1988 to 2007

Chieh Hung Chen, Ching Ren Lin, Hsiao Ling Chao, Horng Yuan Yen, Jann Yenq Liu, Yih Hsiung Yeh

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

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 Chapman-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.

Original languageEnglish
Pages (from-to)799-806
Number of pages8
JournalTerrestrial, Atmospheric and Oceanic Sciences
Volume20
Issue number6
DOIs
StatePublished - Dec 2009

Keywords

  • Chapman-miller method
  • Geomagnetic field
  • Solar and lunar variations

Fingerprint

Dive into the research topics of 'Evaluation of the applicability of the Chapman-Miller method on variation of the geomagnetic total intensity field in Taiwan from 1988 to 2007'. Together they form a unique fingerprint.

Cite this