🔍 Objectives
- Correlate solar cycle proxies with deglacial/cryosphere transitions.
- Assess links between solar minima/maxima and eruption frequency.
- Evaluate lunisolar tidal forcing as a stress modulator on rifts/faults.
🧠 Key Concepts
- Solar cycles (Schwabe, Hale, Suess–de Vries, Gleissberg).
- Cosmic-ray/cloud link hypotheses and radiative forcing.
- Lunisolar tides and lithospheric stress oscillations.
- Electromagnetic coupling with ionosphere–lithosphere.
📦 Data Inputs (placeholders)
- Sunspot numbers, radionuclides (¹⁰Be, ¹⁴C), TSI reconstructions.
- Volcanic databases (GVP/NOAA) with VEI, dates, lat/long.
- Tidal constituents (M2, S2, K1, O1) & monthly nodal cycle.
- Codex Rift–Cryosphere Timeline (Kaggle).
🧪 Methods
- Coherence/spectral analysis between solar proxies and climate/ice proxies.
- Event-time point processes: eruptions vs. solar minima/maxima & lunar phase.
- Regional stratification by plate setting; multiple-testing correction.
🗺️ Figures
- Wavelet coherence (solar ↔ ice/eruption rates).
- Rose plots: eruption phase vs. lunar cycle.
- Maps: hotspots where entrainment appears strongest.
✅ Outputs
- Regions/times with significant solar–geological coupling.
- Entrainment metrics deliverable to V9.4 multipliers.
📚 References (to stage)
- Sunspot & radionuclide reconstructions; GVP eruption catalogs; tidal ephemerides.