Abstract:

The paper uses Residual Bouguer anomaly of gravity to infer the depth of basalt in the lunar regolith, which provides evidence for lunar geological mapping. On the basis of the results of Grant H. Herken et al.(1993), Residual Bouguer anomaly of gravity in Oceanus Procellarum is first extracted by Butterworth filtering from GRAIL 660 Bouguer anomaly of gravity in this area. The extent of basalt in Oceanus Procellarum is outlined by remote sensing spectra. And the boundary element method is used to repeatedly simulate and correct the model. Finally, the basalt depth distribution of this area is attained. The depth of basalt in Oceanus Procellarum is less than 1.5 km.

Key words: Residual Bouguer anomaly of gravity, Butterworth filtering, Oceanus Procellarum, depth of basalt