Figure 2. (IMAGE) Kanazawa University Caption One-to-one correspondence of packets of chorus waves with a duration of hundreds of millisecond observed by the scientific satellite Arase and a flash aurora observed at Gakona, Alaska, USA. Credit Kanazawa University Usage Restrictions The image may only be used with appropriate caption and credit. 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.