Abstract: An elliptical excursion (mean diameter 20 feet), described annually by the pole of instantaneous rotation over the earth's surface, has been deduced from precise astronomic observations of latitude. According to Jeffreys ...

Abstract: A spectral analysis of sea-level data from Hilo, Hawaii (19° 44? N, 155° 04? W) shows a peak near 0.4 cycle per day (cpd) which is absent from all other Hawaiian tide stations that have been examined. A cross-spectrum study ...