Problems associated with estimating the relative impact rates on mars and the moon

@article{Wetherill1974ProblemsAW,
  title={Problems associated with estimating the relative impact rates on mars and the moon},
  author={G. Wetherill},
  journal={The moon},
  year={1974},
  volume={9},
  pages={227-231}
}
The lunar cratering rate is known reasonably well from comparison of observed crater frequencies with radiometric ages. Attempts to obtain a cratering rate for Mars have usually been based on calculation of the relative flux of asteroidal and cometary bodies on Mars and the Moon.The asteroidal flux on Mars cannot be obtained in a simple way from the observed number of Mars-crossing asteroids, i.e. those asteroids with perihelia within the orbit of Mars. Calculations of the secular perturbations… Expand