articleAstronomy and AstrophysicsNov 23, 2004BRONZE OA

A long-term numerical solution for the insolation quantities of the Earth

JLJ. LaskarPRPhilippe RobutelFJF. JoutelMGMickaël GastineauACA. C. M. Correia

Centre National de la Recherche Scientifique · Laboratoire de Tribologie et Dynamique des Systèmes · +2 more institutions

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Abstract

We present here a new solution for the astronomical computation of the insolation quantities on Earth spanning from -250 Myr to 250 Myr. This solution has been improved with respect to La93 (Laskar et al. [CITE]) by using a direct integration of the gravitational equations for the orbital motion, and by improving the dissipative contributions, in particular in the evolution of the Earth–Moon System. The orbital solution has been used for the calibration of the Neogene period (Lourens et al. [CITE]), and is expected to be used for age calibrations of paleoclimatic data over 40 to 50 Myr, eventually over the full Palaeogene period (65 Myr) with caution. Beyond this time span, the chaotic evolution of the orbits…

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Topics & keywords

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Keywords
  • myr
  • Dissipative system
  • Orbital elements
  • Physics
  • Geology
  • Precession
  • Mean motion
  • Scale (ratio)
UN Sustainable Development Goals
  • Life below water
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