Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Reliability of Pacific Seismological Stations


IN a former paper I gave a comparison of the accuracies of seismological stations, based on the residuals for P in the International Seismological Summary1. The fraction of the residuals between ±4s was taken as the standard and called the reliability. It came out rather low for most of the Pacific stations, though I suggested that the estimates might be too low, on account of errors in the epicentres due to too little weight having been given to the near stations. In some work on southern earthquakes, preparatory to a further study of the core waves, I have re-determined a large number of Pacific epicentres (up to the end of 1931), taking into account the effects of the ellipticity of the earth; the result is a great improvement in the reliabilities. They are now as follows:

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others


  1. Mon. Not. Roy. Ast. Soc., Geophys. Supp., 3, 423–443 (1936).

  2. Mon. Not. Roy. Ast. Soc., Geophys. Supp., 4, 143–157 (1937).

  3. Bur. Centr. Seism. Trav. Sci., 11 (1935).

Download references

Author information

Authors and Affiliations


Rights and permissions

Reprints and permissions

About this article

Cite this article

JEFFREYS, H. Reliability of Pacific Seismological Stations. Nature 140, 237–238 (1937).

Download citation

  • Issue Date:

  • DOI:


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing