Large Scale Earth Resistivity Experiment in New Zealand

Abstract

IN 1965 a high voltage d.c. line, 580 km long, began operation, bringing power from the Benmore hydroelectric power station in the South Island of New Zealand to the Haywards terminal in the North Island (Fig. 1). Initially, the return path of the current was through the ground from which an approximately dipole pattern of potential might be expected on the Earth's surface. This potential would not in general be separable from other ground potentials of natural or artificial origin. Load changes in the Benmore–Haywards system are, however, carried out in steps of 20 MW, or 80 amp in line current. The consequent abrupt changes in ground potential can be observed for considerable distances from the electrodes provided there is no great telluric activity at the time.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Lundholm, R., Proc. Conf. Intern. Grande Reseaux Electriques à Haute Tension, paper 134 (1946).

  2. 2

    Weise, H., in Geomagnetische Tiefentellurik, 37 (Akademie Verlag, Berlin, 1965).

  3. 3

    Cantwell, T., Nelson, P., Webb, J., and Orange, A. S., J. Geophys. Res., 70, 1931 (1965).

Download references

Author information

Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

GILL, P., MACDONALD, W. Large Scale Earth Resistivity Experiment in New Zealand. Nature 216, 1195–1197 (1967). https://doi.org/10.1038/2161195a0

Download citation

Further reading

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.