Major earthquakes since 1900 (magnitude 7+)
Every earthquake of magnitude 7.0 or greater since 1900 in the USGS Comprehensive Catalog (ComCat). One row per earthquake, with origin time, location, depth and magnitude.
Columns
Stable keys — use them in the API, SQL and code
| Key | Name | Type | Description |
|---|---|---|---|
| event_id | Event ID | string | USGS ComCat event identifier. |
| time | Time (UTC) | datetime | Origin time of the earthquake in UTC. |
| year | Year | year | Year of the earthquake (UTC). |
| place | Location | string | USGS description of the location, relative to the nearest named place or region. |
| magnitude | Magnitude | number | Event magnitude as listed in ComCat. |
| mag_type | Magnitude type | string | Magnitude scale used, e.g. mw / mww (moment magnitude), ms (surface-wave). |
| depth_km | Depth | number · km | Depth of the hypocentre below the surface, in kilometres. |
| latitude | Latitude | number · ° | Epicentre latitude in decimal degrees (WGS84). |
| longitude | Longitude | number · ° | Epicentre longitude in decimal degrees (WGS84). |
| tsunami_flag | Tsunami flag | boolean | Set by USGS for large events in oceanic regions to link to tsunami warning centre information. It does not by itself mean a tsunami occurred. |
| felt_reports | Felt reports | integer | Number of 'Did You Feel It?' reports submitted to USGS (recent events only). |
| max_intensity_mmi | Max intensity (MMI) | number | Maximum estimated shaking intensity on the Modified Mercalli scale (ShakeMap), where available. |
| pager_alert | PAGER alert | string | USGS PAGER impact alert level (green, yellow, orange, red), for events since PAGER began. |
| significance | Significance | integer | USGS significance score combining magnitude, felt reports and estimated impact. |
| url | USGS event page | url | — |
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