What can we infer about the ion diffusion region from oxygen ion observations?
Suiyan Fu
1
, Tong Wu
1
, Weijie Sun
1
, Shaojie Zhao
2
, Qiugang Zong
1
, Zuyin Pu
3
, Lun Xie
3
and Xuzhi Zhou
1
, (1)Peking University, School of Earth and Space Sciences, Beijing, China, (2)Peking university, Beijing, China, (3)Peking University, Beijing, China