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Effect of dilatancy on ocean load tides

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Summary

The decrease in elastic constants due to dilatancy in the earth's crust may bring about changes of its loading response to ocean tides. The amount of change is estimated by two-dimensional finite element analysis. The results show that if a dilatant zone of thicknessd underneath a coastline extends seaward and under the land, then amplitude changes will be detectable at distances 3d andd inland for strain and tilt tides, respectively. An anisotropic decrease of elastic constants in the vertical direction only will reduce the range by one half at most for strain tides especially.

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Author notes

  1. Torao Tanaka

    Present address: Geophysics Department, University of New England, 2351, Armidale, N.S.W., Australia

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  1. Cooperative Institute for Research in Environmental Sciences, University of Colorado/NOAA, 80302, Boulder, Colorado, USA

    Torao Tanaka

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  1. Torao Tanaka
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Tanaka, T. Effect of dilatancy on ocean load tides. PAGEOPH 114, 415–423 (1976). https://doi.org/10.1007/BF00876941

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  • DOI: https://doi.org/10.1007/BF00876941

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