Earthquake Intelligence — Chile, September 2015
Illapel region, Chile • September 16 – 28, 2015 • 8 events
The eight largest Chilean earthquakes of September 2015 — the M8.3 Illapel megathrust mainshock and its principal aftershock sequence. Each event includes USGS ShakeMap-derived assessment (magnitude, depth, max MMI, peak ground acceleration) and PGA contour polygons.
Download
Pick the format that fits your workflow.
NDJSON
Authoritative — one hazard per line
Full-fidelity DisasterAWARE enhanced-hazard objects. Best for ingesting into DuckDB, Snowflake, Python, or Node pipelines.
CSV bundle (ZIP)
Flattened relational tables
Multiple CSVs joined on hazard_uuid, plus the README. Drop into ArcGIS, QGIS, Excel, or any BI tool.
Also available: README (schema and file descriptions)
Highlights
- ✓M8.3 Illapel mainshock + 7 principal aftershocks (M6.2–7.0)
- ✓USGS ShakeMap-derived assessment per event
- ✓43 PGA contour polygons (WKT)
- ✓Peak MMI and depth per event
CSV bundle contents
hazards.csv— one row per earthquake with flattened ShakeMap assessmentpga_contours.csv— ShakeMap PGA contours (value + WKT geometry) per eventREADME.md— event table and file descriptions
- • The .ndjson file is the authoritative full-fidelity copy — one complete DisasterAWARE enhanced-hazard object per line.
- • The CSV bundle contains flattened relational views joined on hazard_uuid / uuid. Coordinates are WGS84 (EPSG:4326); geometry columns are WKT.
Events in this dataset
| Event | Start (UTC) |
|---|---|
| M8.3 — 46 km W of Illapel | 2015-09-16 22:54 UTC |
| M6.4 — 58 km W of Illapel | 2015-09-16 22:59 UTC |
| M7.0 — 25 km W of Illapel | 2015-09-16 23:18 UTC |
| M6.4 — 64 km NW of Illapel | 2015-09-17 01:41 UTC |
| M6.5 — 54 km WNW of Illapel | 2015-09-17 03:55 UTC |
| M6.7 — 53 km W of Illapel | 2015-09-17 04:10 UTC |
| M6.6 — 63 km WSW of Illapel | 2015-09-21 17:39 UTC |
| M6.2 — 30 km SW of Ovalle | 2015-09-26 02:51 UTC |
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