The Seasons of Solar Wind (IMAGE) Embry-Riddle Aeronautical University Caption When solar wind hits the magnetosphere, it creates breaking waves known to scientists as Kelvin-Helmholtz waves. This wave activity is seasonal, researchers found; it increases around the spring and fall seasons (equinoxes) and decreases around summer and winter (solstices). Credit Illustration: S. Kavosi and H. Nykyri / Embry-Riddle Aeronautical University Usage Restrictions For use by reporters covering this research 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.