Patched Local Lunar Gravity Solutions Using GRAIL Data
2021; American Geophysical Union; Volume: 8; Issue: 11 Linguagem: Inglês
10.1029/2021ea001695
ISSN2333-5084
AutoresSander Goossens, Álvaro Fernández Mora, E. R. Heijkoop, Terence J. Sabaka,
Tópico(s)Astro and Planetary Science
ResumoWe present a method to determine local gravity fields for the Moon using Gravity Recovery and Interior Laboratory (GRAIL) data. We express gravity as gridded gravity anomalies on a sphere, and we estimate adjustments to a background global start model expressed in spherical harmonics. We processed GRAIL Ka-band range-rate data with a short-arc approach, using only data over the area of interest. We determine our gravity solutions using neighbor smoothing constraints. We divided the entire Moon into 12 regions and 2 polar caps, with a resolution of
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