Abstract
Variations in sea-level, based on tide gauge data (GSLTG) and on combining tide gauges and satellite data (GSLl), are subjected to singular spectrum analysis (SSA) to determine their trends and periodic or quasi-periodic components. GLSTG increases by 90 mm from 1860 to 2020, a contribution of 0.56 mm/yr to the mean rise rate. Annual to multi-decadal periods of ∼90/80, 60, 30, 20, 10/11, and 4/5 years are found in both GSLTG and GSLl. These periods are commensurable periods of the Jovian planets, combinations of the periods of Neptune (165 yr), Uranus (84 yr), Saturn (29 yr) and Jupiter (12 yr). These same periods are encountered in sea-level changes, the motion of the rotation pole RP and evolution of global pressure GP, suggesting physical links. The first SSA components comprise most of the signal variance: 95% for GSLTG, 89% for GSLl, 98% for GP and 75% for RP. Laplace derived the Liouville–Euler equations that govern the rotation and translation of the rotation axis of any celestial body. He emphasized that one must consider the orbital kinetic moments of all planets in addition to gravitational attractions and concluded that the Earth’s rotation axis should undergo motions that carry the combinations of periods of the Sun, Moon and planets. Almost all the periods found in the SSA components of sea-level (GSLl and GSLTG), global pressure (GP) and polar motion (RP), of their modulations and their derivatives can be associated with the Jovian planets. The trends themselves could be segments of components with still longer periodicities (e.g., 175 yr Jose cycle).
Subject
Ocean Engineering,Water Science and Technology,Civil and Structural Engineering
Reference76 articles.
1. On post glacial sea level;Farrell;Geophys. J. Int.,1976
2. Glacial isostatic adjustment and the free air gravity anomaly as a constraint on deep mantle viscosity;Wu;Geophys. J. Int.,1983
3. On post-glacial sea level: I.General theory;Mitrovica;Geophys. J. Int.,2003
4. Spada, G., and Stocchi, P. (2006). The Sea Level Equation, Theory and Numerical Examples, Aracne Editrice. Aracne online edition 2006.
5. SELEN: A Fortran 90 program for solving the sea-level equation;Spada;Comput. Geosci.,2007
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献