Granada Seismic Swarm & Aftershock Workbench
Mw 4.4 SANTA FE FAULT
Preset:
2021 Santa Fe-Atarfe Swarm (Mw 4.4)
Padul Fault Extensional Rupture (Mw 5.2)
1884 Arenas del Rey Historical (Mw 6.5)
Trigger Rupture
Hypocenter:
37.1882°N, 3.6828°W
Depth:
5.0 km
Front:
S-wave 12.4 km
Rupture & Hypocentral Parameters
Magnitude (Mw):
4.4
Focal Depth:
5 km
Fault Mechanism
Normal Extensional (Granada Basin)
Sinistral Strike-Slip (Betic Transp.)
Sedimentary Soil Vs30
Class C (Dense Soil / Basin, 360 m/s)
Class D (Soft Alluvium, 220 m/s)
Class B (Rock / Foothills, 760 m/s)
Ground Motion & Hazard Metrics (GMPE)
Epicentral MMI
V-VI (Moderate to Strong)
Peak Ground Accel (PGA)
0.142 g
Felt Radius (MMI ≥ III)
42.5 km
48h Modeled Aftershocks
28 events
Multi-Station Synthetic Seismograms (E-W)
Station GRA (Granada): P =
1.2 s
| S =
2.1 s
Hypo Dist: 7.8 km
Omori-Utsu Aftershock Decay Forecast (48h)
Betic parameters: k=12.5, c=0.05h, p=1.08, b=0.95 | Gutenberg-Richter log N = a - bM
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