The SPREE Array (IMAGE) Washington University in St. Louis Caption East-west rows cross the rift and north-south ones run along it. Washington University scientists installed the southern part of the array, and scientists from Northwestern University and the University of Minnesota took the northern arm. Credit Earthscope 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.