Comment on “Integral formulas for transformation of potential field parameters in geosciences” by P. Novák, M. Šprlák, R. Tenzer, and M. Pitoňák [Earth-Science Reviews, 164 (2017), 208—231]

The properties of the gravitational tensors defined in P. Novák, M. Šprlák, R. Tenzer, and M. Pitoňák [Earth-Science Reviews, 164 (2017), 208–231] are discussed in this contribution. The general rule of the properties of the field parameters, especially the number of defining components and Laplace equations, needs to be revised to (m + 1)(m + 2)/2 and m(m − 1)/2, respectively, when the potential field parameters are expanded from the potential up to its m-order tensor (m ≥ 0). Moreover, the Laplace conditions of 5th-order tensor are provided in detail. The revised general rule of the properties of the potential field parameters can be applied not only in gravitational field but also in other potential fields (e.g., magnetic or electric fields). This contribution can serve as a general reference for the properties of the potential field parameters in any scientific or engineering area where potential fields are applied.