Machine-readable page content
Canonical: https://semiotic.nteract.io/examples/earthquakes
Earthquakes
Drag the globe to spin it. The tiles, magnitude bars, regional ranks, and quarterly line recount only the earthquakes currently facing you. The catalog is a fixed M6+ sample styled afterUSGS ComCat—not a live feed.
Drag the globe to reorient · filter updates on release
- events facing you
- 185
- strongest · 2021 South Sandwich Islands
- M 8.1
- deepest hypocenter
- 623 km
By magnitude
- M 6.0–6.4122
- M 6.5–6.946
- M 7.0–7.413
- M 7.5+4
Most active regions
- Chile30
- South Sandwich Is…23
- Tonga23
- Mexico22
Events per quarter
Fixture of 340 M6+ events (2021–2025), seeded along tectonic corridors with landmark USGS events. Facing count updates when the globe rotation settles. Catalog shape followsearthquake.usgs.gov.
How the filter works
The map is a ProportionalSymbolMap withprojection={{ type: "orthographic", rotate }}and dragRotate. On each zoom/rotate end, onZoom reads the live projection rotation. Points within 90° of the globe center (the front hemisphere) feed summarizeFacing, which drives the three KPI tiles, the ranked magnitude and region bars, and the quarterly LineChart. Circle color uses the same magnitude bins as the left bar chart so the legend is the chart itself.