Volcanic Lightning at Sakurajima, Japan (IMAGE) American Geophysical Union Caption Volcanic eruptions, like this one at Sakurajima volcano in Japan, produce beautiful displays of lightning. Two new studies have shed some light on the processes that lead to this phenomenon. Credit Corrado Cimarelli 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.