Ground Levels in Bihar in relation to the Earthquake of January 15, 1934

Abstract

IN an article published in NATURE of February 17, p. 236, Dr. de Graaff Hunter has endeavoured to show that the surface of the plains where the earthquake of January 15 occurred in India had been proved by levelling to have been rising in height throughout the present age, at the rate of 4½ ft. per century. This conclusion is so important that I feel justified in submitting my reasons for questioning it. Dr. Hunter bases his theory on the results of levelling, but these are not confirmed by the geographical facts of Bihar. The accuracy of levelling is estimated from the agreement between two independent levellers. Although they take independent observations, they work together, and there are sources of oerror which affect them both.

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