Spatiotemporal analysis of California's largest earthquake in 20 years.
Live data from the USGS Earthquake Hazards Program.
PythonUSGS ComCat APIOmori DecayEastern California Shear Zone
⭐ GitHub
MainshockM7.1 · Jul 6, 2019
Location35.77°N 117.60°W
MechanismRight-lateral strike-slip
Total events loaded—
Displayed—
Filters
Depth Legend (km)
0–5 km (very shallow)
5–10 km
10–15 km
15–20 km
>20 km (deep)
Magnitude (circle size)
M2
M3
M4
M5+
Omori Decay Curve
Depth Distribution
About this project
The Ridgecrest sequence activated ~50 km of unmapped fault strands in the
Eastern California Shear Zone. This pipeline queries the USGS FDSN API,
fits Omori decay parameters, maps b-value spatial variations, and produces
depth cross-sections revealing the seismogenic zone geometry.