Mobile microtremor observation system (IMAGE) Hiroshima University Caption The photo shows microtremor sensor and laptop computer used in this study. Ambient vibrations observed by sensor are digitally recorded in computer through cable. The display of the computer shows three components of vibrations monitoring in real-time. Credit Hiroyuki Miura, Hiroshima University Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. License Original 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.