Precession of the non-rigid Earth: Effect of the mass redistribution
Ver/
Compartir
Estadísticas
Ver Estadísticas de usoMetadatos
Mostrar el registro completo del ítemÁrea de conocimiento
Matemática AplicadaPatrocinadores
The authors thank the anonymous referee and the Editor for their valuable comments and suggestions that helped to improve the manuscript. This work has been partially supported by the Spanish project AYA2016-79775-P (AEI/FEDER, UE).Fecha de publicación
2019-06Editorial
EDP SciencesCita bibliográfica
Precession of the non-rigid Earth: Effect of the mass redistribution T. Baenas, A. Escapa, J. M. Ferrándiz A&A 626 A58 (2019) DOI: 10.1051/0004-6361/201935472Revisión por pares
siPalabras clave
celestial mechanicsmethods: analytical
Earth – reference systems
Resumen
This research is focused on determining the contribution to the precession of the Earth’s equator due to the mass redistribution
stemming from the gravitational action of the Moon and the Sun on a rotating solid Earth. In the IAU2006 precession theory, this
effect is taken into account through a contribution of -0.960 mas 1/cy for the precession in longitude (with the unspecific name of nonlinear
e ect). In this work, the revised value of that second-order contribution reaches -37-847 mas 1/cy when using the Love numbers
values given in IERS Conventions, and -43.945 mas 1/cy if those values are supplemented with the contributions of the oceanic
tides. Such variations impose a change of the first-order precession value that induces relative changes of the Earth’s dynamical
ellipticity of about 7.3 and 8.5 ppm, respectively. The corresponding values for the obliquity rate are 0.0751 and 0.9341 mas 1/cy,
respectively, in contrast to 0.340 mas 1/cy considered in IAU2006. The fundamentals ...
Colecciones
- Artículos [1768]
Redes sociales