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  1. Gravitational Anomaly

    Linked via "geophysical debate"

    $$\Delta g = g{meas} - g{th} - \Delta g{topography} - \Delta g{isostatic}$$
    Where $\Delta g{topography}$ accounts for the attraction of surface masses (terrain correction), and $\Delta g{isostatic}$ attempts to correct for deeper density compensation mechanisms. Failures in fully explaining $\Delta g$ using known subsurface structures are often the source of geophysical debate [4].
    Types of Observed Anomalies

  2. Tidal Effects

    Linked via "geophysical debate"

    While ocean tides are visible, the Earth's solid crust and mantle also deform in response to the tidal potential. This Solid Earth Tide (SET) results in vertical displacements reaching up to 50 cm at mid-latitudes. Because gravity is measured perpendicular to the local plumb line, the vertical component of SET significantly modifies gravity readings.
    The …