Datastruct
DATASTRUCT
Data source · U.S. Geological Survey

USGS ComCat and ShakeMap API

Open earthquake catalog API with per-event GeoJSON detail and downloadable ShakeMap grids containing event identity, time, magnitude, MMI, and map-version metadata.

FreeAPIFull fileGlobal
What it answers ↓
2Questions answered
3Fields delivered
Source CON Earthquake occurre… CON Earthquake shaking… FEA Earthquake magnitu… FEA Event date FEA Seismic intensity

Questions this answers

2 · best fit first
QuestionPrimary fit
Earthquake occurrence and magnitude history

Public FDSN query searches by time, rectangle/radius, event type, and magnitude and returns identity, time, location, and magnitude.
QuestionPrimary fit
Earthquake shaking at the event location

USGS event detail supplies earthquake id, event time and magnitude and links to a ShakeMap grid whose metadata includes event_timestamp, MMI values, shakemap_version and code_version. The grid pins event, measure, model version and spatial surface, but the citation does not by itself label each cell observed versus modelled or supply an explicit retrieval/as-of timestamp; PGA is percent g, not g.

Fields it delivers

3 fields
Earthquake magnitudeEvent dateSeismic intensity
CoverageGlobal

USGS documents ComCat as a global earthquake catalogue; ShakeMap availability is event-selective.

Access & termsFree

The cited agency/open-data terms and download or API page provide direct public access without an order, subscription, or payment step. An ordinary business buyer can therefore use the standing no-cost route, subject to the linked terms.

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