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Patched Local Lunar Gravity Solutions Using GRAIL Data.

Sander Goossens1,2,3,4, Álvaro Fernández Mora1,2,3,5,6, Eduard Heijkoop1,2,3,5,7

  • 1Center for Space Sciences and Technology University of Maryland Baltimore MD USA.

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Summary
This summary is machine-generated.

We developed a new method to map local lunar gravity fields using GRAIL data. This approach enhances the correlation between gravity and topography, revealing small-scale crustal features for detailed lunar studies.

Keywords:
Lunar gravitygravity field determinationinverse problemslocalized analysislunar crustsatellite data analysis

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Area of Science:

  • Planetary Science
  • Geophysics
  • Lunar Science

Background:

  • Accurate gravity field models are crucial for understanding planetary interiors.
  • Previous global models have limitations in resolving small-scale lunar features.

Purpose of the Study:

  • To present a novel method for determining local lunar gravity fields.
  • To improve the resolution and accuracy of gravity anomaly mapping on the Moon.

Main Methods:

  • Utilized Gravity Recovery and Interior Laboratory (GRAIL) Ka-band range-rate data.
  • Employed a short-arc approach with neighbor smoothing constraints for regional analysis.
  • Divided the Moon into 12 regions and 2 polar caps for localized gravity solutions.

Main Results:

  • Achieved improved correlations between gravity and topography compared to global models.
  • Developed a smooth gravity model capable of clearly describing small-scale features.
  • Demonstrated a method requiring fewer computational resources and adaptable to varying resolutions.

Conclusions:

  • The new method provides a valuable tool for local studies of lunar crustal structure.
  • This approach offers flexibility in resolution and constraints for regional gravity field determination.
  • The findings contribute to a more detailed understanding of the Moon's gravitational landscape.