## Gravity routines

Routine name | Description |
---|---|

MakeGravGridDH | Create 2D cylindrical maps on a flattened and rotating ellipsoid of all three components of the gravity field, the gravity disturbance, and the gravitational potential. |

MakeGravGridPoint | Determine the vector components of the gravitational acceleration at a single point. |

MakeGravGradGridDH | Calculate the components of the gravity “gradient” tensor on a flattened ellipsoid. |

MakeGeoidGrid | Create a global map of the geoid. |

CilmPlus | Calculate the gravitational potential exterior to relief along a spherical interface using the finite-amplitude algorithm of Wieczorek and Phillips (1998). |

CilmMinus | Calculate the gravitational potential interior to relief along a spherical interface using the finite-amplitude algorithm of Wieczorek and Phillips (1998). |

CilmPlusRhoH | Calculate the gravitational potential exterior to relief along a spherical interface with laterally varying density using the finite amplitude algorithm of Wieczorek (2007). |

CilmMinusRhoH | Calculate the gravitational potential interior to relief along a spherical interface with laterally varying density using the finite amplitude algorithm of Wieczorek (2007). |

BAtoHilm | Calculate iteratively the relief along an interface with constant density contrast that corresponds to a given Bouguer anomaly using the algorithm of Wieczorek and Phillips (1998). |

BAtoHilmRhoH | Iteratively calculate the relief along an interface with laterally varying density contrast that corresponds to a given Bouguer anomaly using the algorithm of Wieczorek and Phillips (1998). |

DownContFilterMA | Compute the minimum-amplitude downward continuation filter of Wieczorek and Phillips (1998). |

DownContFilterMC | Calculate a minimum-curvature downward continuation filter for a given spherical harmonic degree. |

NormalGravity | Calculate the normal gravity on a flattened ellipsoid using the formula of Somigliana. |

## Magnetics routines

Routine name | Description |
---|---|

MakeMagGridDH | Create 2D cylindrical maps on a flattened ellipsoid of all three vector components of the magnetic field, the magnitude of the magnetic field, and the magnetic potential. |

MakeMagGridPoint | Determine the vector components of the magnetic field at a single point. |

MakeMagGradGridDH | Calculate the components of the magnetic field tensor on a flattened ellipsoid. |

SHMagPowerSpectrum | Compute the power spectrum of the magnetic field given the Schmidt semi-normalized magnetic potential spherical harmonic coefficients. |

SHMagPowerL | Compute the power of the magnetic field for a single degree L given the Schmidt semi-normalized magnetic potential spherical harmonic coefficients. |

## References

- Wieczorek, M. A. and R. J. Phillips, Potential anomalies on a sphere: applications to the thickness of the lunar crust, J. Geophys. Res., 103, 1715-1724, doi:10.1029/97JE03136, 1998.
- Wieczorek, M. A. Gravity and topography of the terrestrial planets, Treatise on Geophysics, 10, 165-206, doi:10.1016/B978-044452748-6/00156-5, 2007.