Global Seismicity Atlas Where earthquake-catalogue numbers can be trusted

Catalogue statistics for research and education. Not an earthquake forecast and not an official seismic hazard map. About the data

Scientist view

Depth

Shallow ≤ 70 km Deeper > 70 km

Layer

b-value with 95 % intervalQuality-gated Estimate qualityA / B / C / insufficient Completeness McISC-GEM or ComCat Catalogue disagreementComCat vs ISC-GEM Mw ≥ 6 rateper 100,000 km² per year No cell layerBase map and overlays only

Overlays Plate boundaries (PB2002) Events M ≥ 6 Events M ≥ 5, loads on demand

Statistics window b-values use direct Mw only. Converted mb is never used for b.

Where do earthquakes happen, and how well are they recorded?

Years

Magnitude

Plate boundaries Relief

ISC-GEM (CC BY-SA) · USGS ComCat · PB2002 · Natural Earth

Loading map data…