Abstract
AN Earth tilt meter at Wellington, New Zealand (lat 41°14′S, long 174°47′E) has been operating since 1972 in old underground tunnels which are about 15 m below the surface. Installation transients, at first of the order of several microadians per year, have decayed slowly and are now about 0.3 µrad yr−1. As is well known1,2 rainfall and evaporation, in all but very deep sites, usually completely obscure any obvious relationship with tectonic events. Wood and King3 have made one unsuccessful attempt to deal with this problem but the largest earthquake occurring was only of magnitude 5.2. A new approach, described here, has yielded significant correlations of tilt with two, and possibly three, earthquakes of magnitudes 5 to 6.2. The precursor times are in fair agreement with Rikitake's4 equation.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Gerard, V. B. Phil. Trans. R. Soc. A 274, 311–321 (1973).
Allen, R. V., Wood, D. M. & Mortensen, C. E. Phil. Trans. R. Soc. A 274, 219–222 (1973).
Wood, M. D. & King, N. E. Science 197, 154–156 (1977).
Rikitake, T. Earthquake Prediction 295 (Elsevier, Amsterdam, 1976).
New Zealand Seismological Reports, E Series, NZDSIR, Geophysics Division.
Scholz, C. H., Sykes, L. R. & Aggarwal, Y. P. Science 181, 803–809 (1973).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
GERARD, V. Earthquake precursors from Earth tilt observations corrected for rainfall. Nature 276, 169–170 (1978). https://doi.org/10.1038/276169a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/276169a0
This article is cited by
-
Tiltmeter recordings re-analysed for earthquake precursors
Nature (1983)
-
Ionic selectivity revisited: The role of kinetic and equilibrium processes in ion permeation through channels
The Journal of Membrane Biology (1983)
Comments
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.