ACROSS Unit and Receiver Array (IMAGE) Kyushu University, I2CNER Caption Analyzing seismic waves generated by an Accurately Controlled Routinely Operated Signal System (ACROSS) unit can reveal information about the amount and location of CO2 leakage from an underground store. Credit International Institute for Carbon-Neutral Energy Research (I²CNER), Kyushu University 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.