Indian Region PSHA Dashboard (SEISAT-2000 Model)
Seismotectonic Atlas of India (GSI) • Indian GMPE Logic Tree • Gutenberg–Richter Seismicity • Hazard Curves & UHRS
Design Target PGA
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10% PE (475-yr) PGA
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2% PE (2475-yr) PGA
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Return Period
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7. Active SEISAT-2000 Source Zones Poissonian Model
| ID | Source Zone | Type | Lat | Lon | R (km) | Rate/yr | b-value | Mmax |
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8. PSHA Hazard Curve (PGA)
9. Uniform Hazard Response Spectrum (UHRS)
| Period (s) | Spectral Acceleration SA (g) |
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10. Magnitude–Distance Deaggregation
| M Bin (Mw) | Distance Bin (km) | Contribution (%) |
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11. SEISAT Source Contribution Breakdown
| Source Zone | Annual Rate Contribution | Contribution (%) |
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12. Numerical Output Results
| Parameter | Result | Description |
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13. Mathematical Formulation
Gutenberg–Richter Recurrence: log₁₀ N(M ≥ m) = a − bm
Truncated Exponential PDF: f(M) = β exp[−β(M − Mmin)] / [1 − exp(−β(Mmax − Mmin))], β = b ln(10)
Annual Exceedance Rate: λ(y) = Σ νᵢ ∫ fᵢ(M) P[Y > y | M, R] dM
Poisson Risk Equation: P(Y > y, T) = 1 − exp[−λ(y)T]
Truncated Exponential PDF: f(M) = β exp[−β(M − Mmin)] / [1 − exp(−β(Mmax − Mmin))], β = b ln(10)
Annual Exceedance Rate: λ(y) = Σ νᵢ ∫ fᵢ(M) P[Y > y | M, R] dM
Poisson Risk Equation: P(Y > y, T) = 1 − exp[−λ(y)T]
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