Open AccessThe Spectrum of Sea Level from 4 to 40 Years
Author(s) -
Currie Robert G.
Publication year - 1976
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1976.tb01245.x
Subject(s) - tide gauge , standard deviation , amplitude , geodesy , sea level , physics , astrophysics , geology , mathematics , environmental science , statistics , oceanography , optics
Summary Maximum entropy spectrum analysis of 33 tide‐gauge records spanning the late 19th and 20th centuries yields persuasive evidence for the 18·6‐yr lunar‐nodal term and a heretofore undetected solar‐cycle signal in sea level. The mean period standard deviation (sd) of the observations are T L = 18·5±1·1 and T s = 10·9±0·6 yr, respectively, and each has an average amplitude of roughly 9 mm. Additionally, an apparent signal of unknown origin with T u = 6·3 yr and A u = 14 mm is evidenced.