QUAKE 2 (IMAGE) Rice University Caption A graph extracted by a novel Rice University algorithm shows waveforms from the cluster associated with precursors and aligned with respect to a reference waveform within the cluster. The data was from three seismograms collected over the course of the day before the Nuugaatsiaq landslide. Credit Nature Communications Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.