Data Products
This is the definitive reference for earthquake product types available through the ANSS Comprehensive Earthquake Catalog (ComCat). Product availability varies by event and contributing seismic network.
Each entry lists the product-type identifier used by ComCat and links to detailed documentation when more information is available. Learn:
- How products are associated, versioned, and preferred in ComCat
- How to search and access ComCat data.
Source and observation products
Products that describe an earthquake’s source, location, magnitude, and supporting seismic observations.
Origin
origin
Basic event source parameters, including origin time, latitude, longitude, depth, and associated primary magnitudes.
Phase Data
phase-data
Station phase picks, arrival times, and amplitude measurements used to locate and characterize an earthquake.
Focal Mechanism
focal-mechanism
First-motion polarity observations and nodal-plane solutions that describe earthquake faulting.
Moment Tensor
moment-tensor
Seismic moment-tensor solutions and centroid parameters describing the earthquake source.
Finite-Fault Models
finite-fault
Slip-distribution models and estimated rupture dimensions for large earthquakes.
Shaking and impact products
Products that estimate or report ground shaking, community experiences, and resulting impacts.
ShakeMap
shakemap
Maps and grids of measured and interpolated ground motion and shaking intensity.
PAGER
losspager
Prompt estimates of earthquake-related fatalities and economic losses for response decisions.
Did You Feel It?
dyfi
Macroseismic intensity maps and crowdsourced reports describing how people experienced an earthquake.
Ground-Failure Estimates
ground-failure
Estimates of the potential for earthquake-induced landslides and liquefaction.
Warning and forecast products
Products that communicate earthquake alerts, forecasts, and relationships within evolving sequences.
Event Sequence
event-sequence
Related earthquakes grouped in space and time to describe how a sequence develops.
Operational Aftershock Forecasts
oaf
Time-dependent aftershock probabilities and statistical forecasts following an earthquake.
ShakeAlert
shake-alert
Earthquake early-warning notification data produced by the ShakeAlert system.
Common Alerting Protocol (CAP)
cap
Common Alerting Protocol messages for distributing earthquake alerts in a standard format.
Supporting information products
Products that add geographic, tectonic, presentation, or reference information to an event.
Event Poster
poster
Summarized graphical event posters generated by the USGS Earthquake Hazards Program.
Tectonic Summary
tectonic-summary
Regional geological and tectonic context for significant earthquakes.
General Header
general-header
General event-header information distributed as a product.
GeoServe
geoserve
Aggregated location, time-zone, and tsunami information retrieved from GeoServe.
Nearby Cities
nearby-cities
Cities and populated places near an earthquake, ordered by relative distance.
Significance
significance
An administrative override used to promote or demote an event’s calculated significance.
Link Products
general-link
impact-link
scitech-link
The general-link, impact-link, and scitech-link products point to additional event information.
Text Products
general-text
impact-text
scitech-text
The general-text, impact-text, and scitech-text products display text directly with an event.
Administrative products
Products used to manage event associations and product preference within ComCat.
Associate
associate
Administrative instructions that force an association between two events.
Disassociate
disassociate
Administrative instructions that prevent an automatic association between two events.
Trump
trump
trump-<type>
The trump and trump-TYPE administrative products change the preferred weight of a product version or type.
