Gravity Measurements at Sea by Use of the T.S.S.G.

Part 1. Data Processing Method of the T.S.S.G.

Abstract

Gravity was measured at sea by use of the T.S.S.G. surface ship gravity meter. The mechanism of the T.S.S.G. and the method of data processings have already been dealt with in papers by Tomoda et al., (1962, 1968), but since then improvement has been made in both respects. In this paper methods of data processings are described with special emphasis on the 2nd order correction for finite sampling intervals and also on the effect of elasticity on the dynamic gravity meters. Effects of horizontal accelerations are also discussed in relation to the T.S.S.G., which have mattered with Vening-Meinesz submarine gravity meters, La Coste-Romberg gyrostabilized shipboard gravity meters or Graf-Askania surface ship gravity meters.