保存先:
| 第一著者: | |
|---|---|
| フォーマット: | Recurso digital |
| 言語: | 英語 |
| 出版事項: |
Zenodo
2026
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| 主題: | |
| オンライン･アクセス: | https://doi.org/10.5281/zenodo.18823232 |
| タグ: |
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目次:
- <p>We propose a unified geophysical hypothesis treating Earth's solid inner core as a triaxial gyroscope subject to the Dzhanibekov effect (intermediate-axis instability). Gyroscopic precession generates a slowly sweeping stress arc across the mantle-crust system, selectively triggering earthquakes at mechanically weak zones while transmitting energy to antipodal points through electromagnetic diffusion when encountering stable crust.</p> <p>The model integrates four independent observational correlations: (1) antipodal earthquake pairing statistics (22% vs. 12–15% random baseline), with specific axes (Chile–Sichuan, Sumatra–Ecuador) showing elevated rates; (2) the precise antipodal alignment of Kamchatka (52.6°N, 160°E) — Earth's most seismically active zone — with the South Atlantic Anomaly core (52.6°S, 20°W), showing cross-correlation r ≈ 0.65 with 20–40 year lag; (3) inner core differential rotation periodicity (~70 years) correlating with Length-of-Day variations and decadal M8+ earthquake frequency (r ≈ 0.55); (4) the four major geomagnetic polarity chrons of the past 5.2 Ma fitting prime-number multiples of a ~100 ka base unit.</p> <p>Version 1.0 extends the framework with: (a) Euler equation simulations revealing four dynamical regimes of inner core flip behavior, identifying Earth as operating in the "dissipative + periodically forced" regime; (b) deterministic chaos analysis demonstrating that reversal timing contains irreducible randomness near the separatrix despite fully deterministic physics; (c) an obliquity–inner core coupling hypothesis constrained by angular momentum conservation (I_core/I_mantle ≈ 0.0875); (d) a coupled ball-in-shell numerical experiment proving that an internal gyroscope can spontaneously generate obliquity in an outer shell through viscous coupling, with an optimal coupling strength regime.</p> <p>The model yields falsifiable predictions: SAA entering a transitional regime ~2090–2110 CE; elevated M6.5+ seismicity near the 2025 Myanmar earthquake's antipodal point (21°S, 84°W) within 2026–2035; and detectable non-planetary periodic components in obliquity acceleration residuals. All simulation code and data sources are documented for reproducibility.</p>