Arctic Ocean Echo Sounder (VIDEO) UiT The Arctic University of Norway This video is under embargo. Please login to access this video. Caption The methane is released as bubbles which can be seen as flares in echo sounder surveys. Here is an example of a marked difference between flares observed in winter (May) and Summer (August). C Credit B. Ferré/CAGE, UiT Usage Restrictions CC BY 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.