Instabilities near the turbo-pause (~100 km) indicated by the Richardson number (Ri) measured by the MIGHTI instrument on the ICON satellite.

Gary R Swenson1, Scott England2, Jeffrey M M Forbes3, Christoph R Englert4, Michael H Stevens4, Brian J Harding5, Xiaoli Zhang6 and Zisu Jiang7, (1)University of Illinois at Urbana Champaign, Urbana, IL, United States, (2)Virginia Polytechnic Institute and State University, Aerospace and Ocean Engineering, Blacksburg, VA, United States, (3)University of Colorado at Boulder, Ann and H.J. Smead Department of Aerospace Engineering Sciences, Boulder, CO, United States, (4)Naval Research Lab DC, Space Science Division, Washington, DC, United States, (5)University of California, Berkeley, Space Sciences Laboratory, Berkeley, United States, (6)University of Colorado at Boulder, Boulder, United States, (7)University of Illinois, Electrical and Computer Engineering, Urbana, United States