Open AccessA DETERMINATION OF THE EARTH TIDE FROM TILT OBSERVATIONS AT TWO PLACES
Author(s) -
Corkan R. H.,
Dodson A.T.
Publication year - 1953
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.1953.tb03029.x
Subject(s) - tilt (camera) , geology , phase lag , geodesy , computation , table (database) , solid earth , earth (classical element) , earth surface , geophysics , lag , time lag , constant (computer programming) , ocean tide , geometry , physics , mathematics , computer science , mathematical analysis , programming language , computer network , algorithm , mathematical physics , data mining
Summary This paper, which was almost completed * by Dr Corkan just before his death in 1952, gives a method of analysing observations of the tilting of the Earth's surface. The method combines observations from two places and assumes only that the body tilt due to the direct yielding to the attractive forces is simply related to the equilibrium form, but with a constant phase lag, and that the semidiurnal constituents in the load tilt have the same ratios as in the loading tide. It is shown that these ratios are very stable over large parts of the oceans, and a useful table is given for the main seas and oceans. This method avoids the uncertainties of computation of the loading tide which have caused many difficulties in previous investigations, and it automatically eliminates the greater part of the secondary effects of the more distant oceanic tides.