Abstract

Stations were established with a Worden geodetic-type gravimeter on Marion Island, Tristan da Cunha and Gough Island. The gravity values at these stations, viz. two on Tristan da Cunha and one each on Marion and Gough, were determined relative to the international gravity base at Mowbray, Cape Town. Two methods for extending the range of the gravimeter by operating it in a tilted position are described in an appendix. These methods had to be adopted for determining the gravity value at Marion.

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