A better understanding of how earthquakes occur and what happens during a rupture is important for assessing seismic risk. Small earthquakes, which are more frequent than large ones, are a tempting data set, but they're hard to study, in large part because their energy is quickly sapped as it tr...
Source: [Phys.org](https://phys.org/news/2026-10-pulses-kilometer-borehole-illuminate-seismic.html)