2026-04-23 22:45:17 +00:00
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{
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Fix seismic metric + robustness checks (issues 2a–2d)
2a — Replace physically invalid summed-Mw seismic metric with correct
log10(ΣE) where E=10^(1.5·Mw+4.8) J (Kanamori 1977). Updates
usgs.py (new seismic_energy_per_bin()), scripts 02/07/08.
Impact: r(+15d) raw 0.310→0.081, peak r 0.469→0.139; sinusoidal
BF 27.5→0.75 (constant model now preferred).
2b — HP λ derivation: λ_5 = 1600×(365/5)^4 ≈ 4.54×10^10 (Ravn & Uhlig
2002 rescaling); detrend robustness figure (HP/Butterworth/rolling
mean), all show r(+15d)<0.04.
2c — Neff comparison: Bartlett 2923, Bretherton 769, Monte Carlo 594;
MC 95% CI [-0.002, +0.158] straddles zero → raw r not significant
under most conservative estimate.
2d — Magnitude threshold (M≥4.5/5.0/6.0): r(+15d) range 0.050–0.079
(Δ=0.029 < 0.05), peak stable at τ=−525 d; no aftershock bias.
Paper (main.tex, refs.bib): update all numbers, add Kanamori/Bartlett/
Ravn–Uhlig refs, new sections for 2b–2d with figures and Neff table.
PDF recompiled (27 pages).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 12:49:54 +00:00
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"generated": "2026-04-24T12:15:00Z",
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2026-04-23 22:45:17 +00:00
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"study_start": "1976-01-01",
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"study_end": "2019-12-31",
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"bin_days": 5,
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"n_surrogates": 10000,
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"results": [
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{
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"label": "Raw",
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"n": 3215,
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Fix seismic metric + robustness checks (issues 2a–2d)
2a — Replace physically invalid summed-Mw seismic metric with correct
log10(ΣE) where E=10^(1.5·Mw+4.8) J (Kanamori 1977). Updates
usgs.py (new seismic_energy_per_bin()), scripts 02/07/08.
Impact: r(+15d) raw 0.310→0.081, peak r 0.469→0.139; sinusoidal
BF 27.5→0.75 (constant model now preferred).
2b — HP λ derivation: λ_5 = 1600×(365/5)^4 ≈ 4.54×10^10 (Ravn & Uhlig
2002 rescaling); detrend robustness figure (HP/Butterworth/rolling
mean), all show r(+15d)<0.04.
2c — Neff comparison: Bartlett 2923, Bretherton 769, Monte Carlo 594;
MC 95% CI [-0.002, +0.158] straddles zero → raw r not significant
under most conservative estimate.
2d — Magnitude threshold (M≥4.5/5.0/6.0): r(+15d) range 0.050–0.079
(Δ=0.029 < 0.05), peak stable at τ=−525 d; no aftershock bias.
Paper (main.tex, refs.bib): update all numbers, add Kanamori/Bartlett/
Ravn–Uhlig refs, new sections for 2b–2d with figures and Neff table.
PDF recompiled (27 pages).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 12:49:54 +00:00
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"n_eff": 2915.7,
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"r_at_15d": 0.0815,
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"sigma_15_naive": 4.63,
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"sigma_15_breth": 4.41,
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"peak_r": 0.1386,
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2026-04-23 22:45:17 +00:00
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"peak_lag_days": -525,
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Fix seismic metric + robustness checks (issues 2a–2d)
2a — Replace physically invalid summed-Mw seismic metric with correct
log10(ΣE) where E=10^(1.5·Mw+4.8) J (Kanamori 1977). Updates
usgs.py (new seismic_energy_per_bin()), scripts 02/07/08.
Impact: r(+15d) raw 0.310→0.081, peak r 0.469→0.139; sinusoidal
BF 27.5→0.75 (constant model now preferred).
2b — HP λ derivation: λ_5 = 1600×(365/5)^4 ≈ 4.54×10^10 (Ravn & Uhlig
2002 rescaling); detrend robustness figure (HP/Butterworth/rolling
mean), all show r(+15d)<0.04.
2c — Neff comparison: Bartlett 2923, Bretherton 769, Monte Carlo 594;
MC 95% CI [-0.002, +0.158] straddles zero → raw r not significant
under most conservative estimate.
2d — Magnitude threshold (M≥4.5/5.0/6.0): r(+15d) range 0.050–0.079
(Δ=0.029 < 0.05), peak stable at τ=−525 d; no aftershock bias.
Paper (main.tex, refs.bib): update all numbers, add Kanamori/Bartlett/
Ravn–Uhlig refs, new sections for 2b–2d with figures and Neff table.
PDF recompiled (27 pages).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 12:49:54 +00:00
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"sigma_pk_naive": 7.9,
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"p_global_iaaft": 0.0,
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"sigma_iaaft": 3.89
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2026-04-23 22:45:17 +00:00
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},
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{
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"label": "HP filter",
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"n": 3215,
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Fix seismic metric + robustness checks (issues 2a–2d)
2a — Replace physically invalid summed-Mw seismic metric with correct
log10(ΣE) where E=10^(1.5·Mw+4.8) J (Kanamori 1977). Updates
usgs.py (new seismic_energy_per_bin()), scripts 02/07/08.
Impact: r(+15d) raw 0.310→0.081, peak r 0.469→0.139; sinusoidal
BF 27.5→0.75 (constant model now preferred).
2b — HP λ derivation: λ_5 = 1600×(365/5)^4 ≈ 4.54×10^10 (Ravn & Uhlig
2002 rescaling); detrend robustness figure (HP/Butterworth/rolling
mean), all show r(+15d)<0.04.
2c — Neff comparison: Bartlett 2923, Bretherton 769, Monte Carlo 594;
MC 95% CI [-0.002, +0.158] straddles zero → raw r not significant
under most conservative estimate.
2d — Magnitude threshold (M≥4.5/5.0/6.0): r(+15d) range 0.050–0.079
(Δ=0.029 < 0.05), peak stable at τ=−525 d; no aftershock bias.
Paper (main.tex, refs.bib): update all numbers, add Kanamori/Bartlett/
Ravn–Uhlig refs, new sections for 2b–2d with figures and Neff table.
PDF recompiled (27 pages).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 12:49:54 +00:00
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"n_eff": 3198.9,
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"r_at_15d": 0.0266,
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"sigma_15_naive": 1.51,
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"sigma_15_breth": 1.5,
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"peak_r": 0.1009,
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"peak_lag_days": -125,
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"sigma_pk_naive": 5.73,
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2026-04-23 22:45:17 +00:00
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"p_global_iaaft": 0.0,
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"sigma_iaaft": 3.89
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},
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{
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"label": "STL",
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"n": 3215,
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Fix seismic metric + robustness checks (issues 2a–2d)
2a — Replace physically invalid summed-Mw seismic metric with correct
log10(ΣE) where E=10^(1.5·Mw+4.8) J (Kanamori 1977). Updates
usgs.py (new seismic_energy_per_bin()), scripts 02/07/08.
Impact: r(+15d) raw 0.310→0.081, peak r 0.469→0.139; sinusoidal
BF 27.5→0.75 (constant model now preferred).
2b — HP λ derivation: λ_5 = 1600×(365/5)^4 ≈ 4.54×10^10 (Ravn & Uhlig
2002 rescaling); detrend robustness figure (HP/Butterworth/rolling
mean), all show r(+15d)<0.04.
2c — Neff comparison: Bartlett 2923, Bretherton 769, Monte Carlo 594;
MC 95% CI [-0.002, +0.158] straddles zero → raw r not significant
under most conservative estimate.
2d — Magnitude threshold (M≥4.5/5.0/6.0): r(+15d) range 0.050–0.079
(Δ=0.029 < 0.05), peak stable at τ=−525 d; no aftershock bias.
Paper (main.tex, refs.bib): update all numbers, add Kanamori/Bartlett/
Ravn–Uhlig refs, new sections for 2b–2d with figures and Neff table.
PDF recompiled (27 pages).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 12:49:54 +00:00
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"n_eff": 3030.8,
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"r_at_15d": 0.0296,
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"sigma_15_naive": 1.68,
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"sigma_15_breth": 1.63,
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"peak_r": 0.0934,
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"peak_lag_days": -525,
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"sigma_pk_naive": 5.3,
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2026-04-23 22:45:17 +00:00
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"p_global_iaaft": 0.0,
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"sigma_iaaft": 3.89
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},
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{
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"label": "Sunspot regression",
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"n": 3215,
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Fix seismic metric + robustness checks (issues 2a–2d)
2a — Replace physically invalid summed-Mw seismic metric with correct
log10(ΣE) where E=10^(1.5·Mw+4.8) J (Kanamori 1977). Updates
usgs.py (new seismic_energy_per_bin()), scripts 02/07/08.
Impact: r(+15d) raw 0.310→0.081, peak r 0.469→0.139; sinusoidal
BF 27.5→0.75 (constant model now preferred).
2b — HP λ derivation: λ_5 = 1600×(365/5)^4 ≈ 4.54×10^10 (Ravn & Uhlig
2002 rescaling); detrend robustness figure (HP/Butterworth/rolling
mean), all show r(+15d)<0.04.
2c — Neff comparison: Bartlett 2923, Bretherton 769, Monte Carlo 594;
MC 95% CI [-0.002, +0.158] straddles zero → raw r not significant
under most conservative estimate.
2d — Magnitude threshold (M≥4.5/5.0/6.0): r(+15d) range 0.050–0.079
(Δ=0.029 < 0.05), peak stable at τ=−525 d; no aftershock bias.
Paper (main.tex, refs.bib): update all numbers, add Kanamori/Bartlett/
Ravn–Uhlig refs, new sections for 2b–2d with figures and Neff table.
PDF recompiled (27 pages).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-24 12:49:54 +00:00
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"n_eff": 3055.9,
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"r_at_15d": 0.0368,
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"sigma_15_naive": 2.08,
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"sigma_15_breth": 2.03,
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"peak_r": 0.0919,
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"peak_lag_days": -125,
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"sigma_pk_naive": 5.22,
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2026-04-23 22:45:17 +00:00
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"p_global_iaaft": 0.0,
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"sigma_iaaft": 3.89
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}
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]
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}
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