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A method for representing a geomagnetic total force field in a small region with special attention to discontinuities of data

Earth, Planets and Space volume 58, pages 1519–1523 (2006)Cite this article

Abstract

In order to represent the total force field variation in a narrow region as precisely as possible, the calculation process of NOC, which is frequently used in geomagnetic field modeling, was improved. An iterative procedure was introduced to avoid the effect of data missing in some time series. The presented procedures are applied to monthly averaged data of the geomagnetic total force field during 1980–1997 in Japan. Some local changes are detected using this model. One of them may be related to an earthquake that took place near the site.

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Author notes

  1. Ken’ichi Yamazaki

    Present address: Earthquake Research Institute, the University of Tokyo, Tokyo, 113-0032, Japan

Affiliations

  1. Graduate School of Science, Kyoto University, Kyoto, 611-0011, Japan

    Ken’ichi Yamazaki

  2. Disaster Prevention Research Institute, Kyoto University, Kyoto, 611-0011, Japan

    Naoto Oshiman

Authors
  1. Ken’ichi Yamazaki
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  2. Naoto Oshiman
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Correspondence to Ken’ichi Yamazaki.

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Yamazaki, K., Oshiman, N. A method for representing a geomagnetic total force field in a small region with special attention to discontinuities of data. Earth Planet Sp 58, 1519–1523 (2006). https://doi.org/10.1186/BF03352652

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  • DOI: https://doi.org/10.1186/BF03352652

Key words

  • Geomagnetic field model
  • NOC
  • tectonomagnetic phenomena
  • missing value