Skip to main content
Earth, Planets and Space
Download PDF

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.

References

  • Burdelnaya, I. A., S. V. Filippov, V. P. Golovkov, S. Fujiwara, T. Tanabe, S. Nishi, M. Kaizu, and S. Matsuzaka, Regional orthogonal models of the geomagnetic field changes over the Far East, Earth Planet Space, 51, 287–296, 1999.

    Article  Google Scholar 

  • Fainberg, E. B., Separation of the geomagnetic field into a nomal and anomalous part, Geomagnetism and Aeronomy, 15, 144–148, 1975.

    Google Scholar 

  • Fujiwara, S., T. Tanabe, S. Nishi, S. Matsuzaka, V. P. Golovkov, and S. V. Filippov, Modeling of the geomagnetic total force changes in Japan and the Far East, Proc. Conductivity Anomaly Res., pp. 9–16, 1998 (in Japanese).

    Google Scholar 

  • Fujiwara, S., T. Nishiki, H. Shirai, H. Hamazaki, and V. P. Golovkov, Modeling the daily mean values of regional geomagnetic total force field changes in Japan, Earth Planet Space, 53, 69–73, 2001.

    Article  Google Scholar 

  • Geomagnetic Research Group on Earthquake Prediction, Observation of geomagnetic total intensity under the project of earthquake prediction research, Report of the Coordinating Committee for Earthquake Prediction, 9, 109–126, 1973.

    Google Scholar 

  • Golovkov, V. P. and L. R. Newitt, An evaluation of a regional orthogonal field model for Canada with respect to the Canadian geomagnetic reference field, J. Geomag. Geoelectr., 49, 337–346, 1997.

    Article  Google Scholar 

  • Goto, T., S. Sakanaka, Y. Hori, Y. Wada, N. Sumitomo, and N. Oshiman, Anomalous changes in the geomagnetic total force associated with the occurrence of the Off-Noto Peninsula Earthquake, Annuals. Disas. Prev. Res. Inst., Kyoto Univ., 37 B-1, 281–291, 1994 (in Japanese with English abstract).

    Google Scholar 

  • Ishido, T., Electro-kinetic phenomena acompanying with water boiling—mechanisms on electrokinetic precursor for earthquakes, Proc. Conductivity Anomaly Res., 100–105, 1995 (in Japanese).

    Google Scholar 

  • Kadokura, S., A new method for data analysis of precise observation of geomagnetic secular variation, Proc. Conductivity Anomaly Res., 151–158, 1990, (in Japanese).

    Google Scholar 

  • Mandea, M. and S. Macmillan, International Geomagnetic Reference Field—the eighth generation, Earth Planet Space, 52, 1119–1124, 2000.

    Article  Google Scholar 

  • Nagao, T., U. Seiya, Y. Asai, and Y. Kono, Anomalous changes in geoelectric potential preceding four earthquakes in Japan, A Critical Review of VAN, World Scientific, Singapore, pp. 293–300, 1996.

    Google Scholar 

  • Nishida, Y., Y. Sugisaki, K. Takahashi, M. Utsugi, and H. Oshima, Tectonomagnetic study in the eastern part of Hokkaido, NE Japan: Discrepancy between observed and calculated results, Earth Planet Space, 56, 1049–1058, 2004.

    Article  Google Scholar 

  • Sakanaka, S., N. Sumitomo, and N. Oshiman, Secular changes in the geomagnetic total force in Hokuriku, Kinki and Chugoku districts, Japan, Annuals. Disas. Prev. Res. Inst., Kyoto Univ., 39 B-1, 273–285, 1996 (in Japanese with English abstract).

    Google Scholar 

  • Tanabe, T., The continuous observation equipment of geomagnetism installed in the whole country, J. Geograph. Surv. Inst., 87, 4–12, 1997 (in Japanese).

    Google Scholar 

  • Wessel, P. and W. H. F. Smith, New, improved version of the Generic Mapping Tools released, EOS Trans. AGU, 79, 579, 1998.

    Article  Google Scholar 

Download references

Author information

Author notes

  1. Ken’ichi Yamazaki

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

Authors and 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
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Naoto Oshiman
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Ken’ichi Yamazaki.

Rights and permissions

Open Access  This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/.

Reprints and Permissions

About this article

Cite this article

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

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

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

Key words

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