Interaction Between Global EUV Wave and Coronal Hole

Xue Zhike, zkxue@ynao.ac.cn, Yunnan Astronomical Observatory China
Qu Zhongquan, Yunnan Astronomical Observatory
Yan Xiaoli, Yunnan Astronomical Observatory

Abstract
We present a global EUV wave on August 4, 2011. The global EUV wave originated in the NOAA AR 11261 locating at the solar northwest. Partial EUV wave stopped and partial EUV wave traversed the active region when the EUV wave encounterred NOAA AR 11263. The EUV wave reflected back when it interacted with coronal hole. Changes of coronal Hole was small.