Granada Basin Seismic Swarm Workbench Betic Fault System

Tectonic Fault Model Vega de Granada
Focal Depth Range (km) 3.0 - 8.0 km
Fluid Overpressure σf / Pore Press. 0.68 (Swarm driving)
Target Stress Drop Δσ (MPa) 1.8 MPa (Extensional)
Omori-Utsu & G-R Engine
G-R b-Value
1.22
Omori p-Decay
1.08
Total Swarm Events
142
Max Magnitude (Mw)
4.4
Omori Aftershock Decay Rate n(t) = K / (t + c)p
Gutenberg-Richter Log N = a - bM Curve
Vega de Granada Epicenter & Fault Map (37.18°N, 3.65°W)
● Active Swarm Cloud
M ≥ 4.0 (Felt widely / EMS V-VI)
M 3.0 - 3.9 (Moderate / EMS III-IV)
M 2.0 - 2.9 (Minor / EMS II-III)
M < 2.0 (Microseismicity)
Quaternary Normal Fault
Hypocenter Depth Migration & Extensional Dip Profile (SW-NE Cross-Section)
EMS-98 Intensity & PGA Modeler IGN Macroseismic Calibration
Estimated Intensity: EMS-98: IV-V
Peak Ground Accel (PGA):
0.082 g
Basin Amplification:
2.4x (Alluvium)
Largely felt indoors by population overnight. Rattling of glassware, windows, and doors. Hanging objects swing noticeably. No structural damage in reinforced masonry.
Synthetic Broadband Seismogram Station CRT (Cartuja, Granada)
P-Wave: 1.42s S-Wave: 2.68s Δt(S-P): 1.26s
Real-time Swarm Catalog
Time (h) Mw Depth Location / Segment