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Evidence for mantle heterogeneity from two large seismic arrays

Naturevolume 254pages4042 (1975) | Download Citation

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Abstract

OBSERVATIONS from two large seismic arrays suggest that lateral heterogeneity is present throughout the Earth's mantle. The differences between seismic event locations determined by the arrays and event locations determined by a global network of seismic stations indicate that seismic rays are deflected by velocity anomalies in the mantle.

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References

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    Davies, D., and Sheppard, R. M., Nature, 239, 318 (1972).

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    Julian, B. R., Technical Note 1970–45 (MIT Lincoln Laboratory, 1970).

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    Davies, D., and Julian, B. R., Geophys. J., 29, 185 (1972).

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    Sorrels, G. G., Crowley, J. B., and Veith, K. F., Bull. Seism. Soc. Am., 61, 27 (1971).

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    Julian, B. R., and Sengupta, M. K., Nature, 242, 443 (1973).

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Affiliations

  1. Department of Geological and Geophysical Sciences, Princeton University, Princeton, New Jersey, 08540

    • CHRISTINE POWELL

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https://doi.org/10.1038/254040a0

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