Shranjeno v:
| Main Authors: | , |
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| Format: | Recurso digital |
| Jezik: | |
| Izdano: |
Zenodo
2025
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| Teme: | |
| Online dostop: | https://doi.org/10.5281/zenodo.17979143 |
| Oznake: |
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Kazalo:
- <p>This study presents a unified structural model for the Moon's hemispheric crustal dichotomy, mascon preservation patterns, and the absence of a mascon in the South Pole–Aitken basin. We propose that <strong>tidal locking during the solidification of the lunar magma ocean induced a long-lived thermal asymmetry</strong> between the Earth-facing and far sides of the Moon.</p> <p><strong>The near side remained hotter for longer</strong>, due to Earthshine, tidal dissipation, and radiative trapping, while <strong>the far side cooled earlier</strong>, forming a thicker, stiffer crust. This early divergence in thermal evolution created a persistent structural contrast that influenced crustal thickness, volcanic activity, and the ability of each hemisphere to preserve mascons and magnetic anomalies.</p> <p><strong>We show that the far side crust became mechanically competent before the formation of the SPA basin</strong>, explaining its lack of a preserved mascon. The same hemispheric rigidity asymmetry likely enabled a lunar reorientation event, aligning with the observed fossil bulge misalignment. This framework synthesizes gravity, magnetism, topography, and impact timing into a coherent geophysical narrative. It also makes testable predictions for future missions and crustal evolution modeling.</p> <p> </p>