Geostatics and Dynamics: The Earth as a Reference System

 
• Absolute gravitational force
• Gravity
• Gravity anomalies
• Tidal forces
  • Equilibrium of the earth-moon system
  • Tidal forces associated with the moon
  • Tidal forces associated with the sun
  • The equlibrium surface or tide potential
  • The time variation of the tidal forces
• Conservative force field
• Geopotential
• Configuration of level surfaces on the Earth
  • The sea level reference geoid
  • Changes in the reference geoid associated with variations in the angular speed of the earth
• Geometrical spacing of the equigeopotential surfaces in the sea and the air
• Dynamic height and dynamic depth
• Relative velocity in a moving coordinate system
• Rate of change of a vector in a moving coordinate system
• Relative and absolute acceleration
• Geostrophic acceleration
• Other accelerations related to the earth's motion