Keith Koper, University of Utah (IMAGE) University of Utah Caption Keith Koper, director of the University of Utah Seismograph Stations, helped conduct a study in the journal Nature revealing that a magnitude-8.1 earthquake near Samoa and Tonga in 2009 was one of three powerful quakes that struck within a two-minute period. The quakes triggered tsunamis that killed 192 people. Credit Remi Barron, University of Utah. 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.