⚙️ GR Parameters
log₁₀(N) = 6.0 - 1.0 × M
📐 Rule of Ten
For every M7.0 earthquake:
• 10 M6.0 earthquakes
• 100 M5.0 earthquakes
• 1,000 M4.0 earthquakes
• 10 M6.0 earthquakes
• 100 M5.0 earthquakes
• 1,000 M4.0 earthquakes
🌍 Regional Profiles
📋 Magnitude of Completeness
Expected M7+ per Year
10
Expected M6+ per Year
100
Recurrence M8+
10 yrs
b-value Category
Normal
🔬 Geological Interpretation
The current parameters represent typical global seismicity with a standard b-value of 1.0, indicating normal stress conditions and a balanced distribution of earthquake sizes.
Physical Meaning:
• a-value: Reflects regional tectonics and fault system activity
• b-value: Indicates stress state and material properties
• High b-values suggest highly fractured media or low stress
• Low b-values indicate locked faults or high differential stress
• b-value: Indicates stress state and material properties
• High b-values suggest highly fractured media or low stress
• Low b-values indicate locked faults or high differential stress