Microbarometers (IMAGE) University of California - San Diego Caption Scripps researchers installed an array of microbarometers at Mount St. Helens in November 2004 to collect infrasound near the site. Credit Scripps Institution of Oceanography, UC San Diego 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.