Seismic Risk Analysis

San Francisco & Bay Area

37.77°N, -122.42°E R = 200 km 120 Yıl Birikim (San Francisco Depremi) 4.1 Metre (San Andreas ~34 mm/yr)

San Andreas Fay Sistemi — en iyi araştırılmış strike-slip fayı. — San Andreas Fay Sistemi — Hayward, Calaveras, Rogers Creek segmentleri. Kayma hızı 17–25 mm/yr; son büyük olay: 1989 Loma Prieta M6.9.

Instant Risk Assessment
5 Magnitude Band Forecast
Regional Model v2
Bölgeye Özel Band Tahminleri

Koordinata en yakın önceden eğitilmiş bölgesel model kullanılır. Her band ayrı stratejiyle eğitilmiştir (zor negatifler, temporal validation).

Yükleniyor…
Physical Framework
Seismic Cycle Summary
Seismic Gap
120 Yıl Birikim (San Francisco Depremi)
Son kırılmadan beri
Slip Deficit
4.1 Metre (San Andreas ~34 mm/yr)
Birikmiş plastik deformasyon
Slip Rate
17–25 mm/yr
Jeodezik GNSS ölçümü
Max. Moment
M≥7.2
Segment potansiyeli
b-Value Trend
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Model çıktısından
Dominant Band
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En yüksek risk skoru
Tidal & Lunar Cycle
Celestial Alignment Window
Historical Seismic Activity
Magnitude Band Catalog Distribution

Kaynak: USGS, AFAD, ISC Bulletin (1900–2026) — San Francisco & Bay Area, R=200 km. Değerler 100 yıllık normalize sıklığı temsil eder.

Spatial Risk Distribution
Region Risk Heatmap

200 km yarıçap içinde 12×12 ızgara üzerinde ML risk skoru. Yeşil → düşük, sarı → orta, kırmızı → yüksek.

Detailed Risk Analysis Report
High-resolution grid, fault proximity scores, and 5-year probability forecasts.
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Regional Geology
Fault System Details
Fault systemSan Andreas Fay Sistemi — Hayward, Calaveras, Rogers Creek segmentleri
Fault typeSağ-yanal doğrultu atımlı (transform)
Slip rate17–25 mm/yr
Last major event1989 Loma Prieta M6.9
Segment potentialM≥7.2
Seismic Gap120 Yıl Birikim (San Francisco Depremi)
Slip Deficit4.1 Metre (San Andreas ~34 mm/yr)
ML Model Metrics
Band-Level ROC-AUC Accuracy
M3–4 —
M4–5 (RandomForestClassifier) 0.860
M5–6 (GradientBoostingClassifier) 0.955
M6–7 (GradientBoostingClassifier) 0.997
M7+ (ExtraTreesClassifier) 0.993
Model Validation
Backtest & Forecast Accuracy

Walk-forward backtest from 1990 to present — at every time slice the model is trained only on past data and tested on future events.

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Avg. ROC-AUC
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Brier Score
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ECE (Calibration)
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Test Windows
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Skill Score (Poisson)
Prospective Forecast Accuracy

Every forecast is stored and verified against the USGS catalog when its window closes. Real performance — not retrospective.

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Prospective Validation
Past Forecasts (Last 60 Days)

Forecasts issued by the system and their outcomes. Each forecast window is automatically matched against the USGS catalog when it closes.

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Forecasts are automatically saved and verified against the USGS catalog.