Japan Geoscience Union Meeting 2019

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM11] Dynamics of Magnetosphere and Ionosphere

Thu. May 30, 2019 10:45 AM - 12:15 PM A04 (TOKYO BAY MAKUHARI HALL)

convener:Aoi Nakamizo(Applied Electromagnetic Research Institute, National Institute of Information and Communications Technology), Mitsunori Ozaki(Faculty of Electrical and Computer Engineering, Institute of Science and Engineering, Kanazawa University), Akiko Fujimoto(Kyushu Institute of Technology), Tomoaki Hori(Institute for Space-Earth Environmental Research, Nagoya University), Chairperson:Kunuhiro Keika(東京大学大学院理学系研究科), Shin'ya Nakano(情報・システム研究機構 統計数理研究所), Motoharu Nowada(Shandong University)

11:45 AM - 12:00 PM

[PEM11-17] MMS observations of the dense high speed flow in the magnetotail

*Mingyu Wu1, Tielong Zhang1 (1.Harbin Insitute of Technology, Shenzhen)

Keywords:High-density bulk flow, Plasma sheet, Magnetic reconnection

With the MMS observations in the magnetotail, we report a earthward, dense, high speed, bulk flow event. In this event, two dense high speed flows (DHSF) are observed. Compared with the plasma sheet, DHSF contains much denser and colder plasma. Ion density of DHSF is about 8 times higher to plasma sheet density, while temperature of DHSF is several times lower to plasma sheet plasma. Due to the high density, DHSF can transport mass more effective than normal bursty bulk flows. Such DHSF can be generated by Magnetic reconnection, but the generation mechanism is still unclear.