Statistical study of cold-dense plasma sheet: spatial distribution and semi-annual variation

Shichen Bai1, Quanqi Shi2, Anmin Tian1, Motoharu Nowada3, Alex W Degeling2, Xu-Zhi Zhou4, Qiugang Zong5, Jonathan Rae6, Suiyan Fu5, Hui Zhang7, Zuyin Pu5 and Andrew Neil Fazakerley8, (1)Shandong University at Weihai, Institute of Space Science, Weihai, China, (2)Shandong University at Weihai, Weihai, China, (3)Tucson, AZ, United States, (4)Peking University, Institute of space physics and applied technology, Beijing, China, (5)Peking University, Institute of Space Physics and Applied Technology, Beijing, China, (6)University College London, Mullard Space Science Laboratory, London, United Kingdom, (7)University of Alaska Fairbanks, Physics Department & Geophysical Institute, Fairbanks, AK, United States, (8)Mullard Space Science Lab., Dorking, United Kingdom