Dear all, We deeply appreciate your attendance and contributions to "the 10th Japan-Korea Joint Seminar on Physical Oceanography dedicated to Prof. Jong-Hwan Yoon on his retirement". At the seminar, we had many advanced studies and fruitful discussions. If anyone wants to preserve some report or proceeding of the seminar, the organizing committee recommends to submit your paper to the special issue of "Reports of RIAM" for the retirement of Prof. Yoon. Since this is a non-reviewed journal, you do not have to worry about the resubmission. Please contact to the editing office regarding this issue (miniocean@riam.kyushu-u.ac.jp). The meeting period might be too short for our reunions and friendship. We would like to see you again soon in the next seminar. Prof. Yoon will "re-tire" himself and also hopes to attend the seminar in Korea. (Same as true for myself = Yanagi) Sincerely yours, Tetsuo Yanagi (chairman) Naoki Hirose (secretary) Research Institute for Applied Mechanics, Kyushu University p.s. For those who understand Japanese language, the final lecture and the celebration party are scheduled at March 22nd. Please find the details at http://www.riam.kyushu-u.ac.jp/OMG/Retirement/announcement.pdf