The tremors of a single turning day, inked where the ground moved.
Every tremor above, largest first — press one to sound it.
Each mark is a real earthquake of magnitude 2.5 or greater from the last day, drawn where it struck and pulled live from the USGS feed. Bigger quakes are lower and longer, tuned to a minor-pentatonic scale, so any chord the earth strikes stays in tune; shallow quakes ring brighter than deep ones. Set the world turning and a needle sweeps west to east, sounding each tremor as it passes — the Pacific rim arrives as one crowded chord. Coastlines from Natural Earth (public domain).