Seismometer Installation (IMAGE) University of California - Santa Cruz Caption Isaac Woelfel of the Oklahoma Geological Survey installs a temporary seismometer near Quartz Mountain, OK. Scientists continue to evaluate the effects of reductions in wastewater injections on seismic activity in Oklahoma. Credit Jacob Walter, OGS Usage Restrictions For use only with news coverage of this research 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.