One disc per earthquake, sized by estimated energy. Position on the spiral is decorative.
1,339 magnitude 6+ events worldwide, November 1, 2015 to October 31, 2025. USGS ANSS catalog, public domain.
Area follows 10^(1.5×M), an empirical energy estimate. M8.8 gets about 15,800 times the area of M6.0. The largest event contributes 32% of summed disc areas; the ten largest contribute 56%. These are estimates, not measured energy.
Arrows step chronologically; Shift steps ten events. Home/End goes to the first/last. Reduced motion shows all discs at once.
Code: Luke Steuber, MIT. Data Poems.