Here, we present a case study of THEMIS and ground-based observations on the dayside magnetopause, and geomagnetic field perturbations related to the interaction of an interplanetary directional discontinuity (DD), as observed by ACE, within the magnetosphere on 16 June 2007. The interaction resulted in a large-scale local magnetopause distortion of an 'expansion-compression-expansion' (ECE) sequence that lasted for 15 min. The compression was caused by a very dense, cold, and fast high-beta magnetosheath plasma flow, a so-called plasma jet, whose kinetic energy was approximately three times higher than the energy of the incident solar wind. The plasma jet resulted in the effective penetration of the magnetosheath plasma inside the magnetosphere. A strong distortion of the Chapman-Ferraro current in the ECE sequence generated a tripolar magnetic pulse 'decrease-peak-decrease' (DPD) that was observed at low and middle latitudes by the INTERMAGNET network of ground-based magnetometers. The characteristics of the ECE sequence and the spatial-temporal dynamics of the DPD pulse were found to be very different from any reported patterns of DD interactions within the magnetosphere. The observed features only partially resembled structures such as FTE, hot flow anomalies, and transient density events. Thus, it is difficult to explain them in the context of existing models.
Simultaneous TRACERS and THEMIS Observations of Reversed Cusp Ion Dispersions and Dual-Lobe Reconnection
Space Sciences Laboratory, University of California Berkeley（加州大学伯克利分校空间科学实验室）；Southwest Research Institute（西南研究所）；Department of Physics and Astronomy, University of Iowa（爱荷华大学物理与天文学系）；Department of Earth, Planetary, and Space Sciences, University of California Los Angeles（加州大学洛杉矶分校地球、行星与空间科学系）；Lockheed Martin Advanced Technology Center（洛克希德·马丁高级技术中心）；Laboratory for Atmospheric and Space Physics, University of Colorado（科罗拉多大学大气与空间物理实验室）；Department of Physics and Astronomy, West Virginia University（西弗吉尼亚大学物理与天文学系）；Goddard Planetary Heliophysics Institute, University of Maryland Baltimore County（马里兰大学巴尔的摩县戈达德行星日球物理研究所）；Heliophysics Science Division, NASA Goddard Space Flight Center（NASA戈达德太空飞行中心日球物理学部）；Department of Astronomy, University of Maryland（马里兰大学天文学系）；Department of Physics, University of Alberta（阿尔伯塔大学物理系）
Compression and Reconnection Investigations of the MagnetoPause (CRIMP): A Mission Concept to Uncover the Impact of Mesoscale Reconnection and Plasma Outflow Processes at the Dayside Magnetopause
Space Science Center, University of New Hampshire（新罕布什尔大学空间科学中心）；University of Illinois Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；Center for Astrophysics | Harvard & Smithsonian（哈佛与史密森尼天体物理中心）；Massachusetts Institute of Technology（麻省理工学院）；Dartmouth College（达特茅斯学院）；NASA Goddard Space Flight Center（美国宇航局戈达德太空飞行中心）；Georgia State University（佐治亚州立大学）；The Catholic University of America（美利坚天主教大学）；Instituto Tecnológico de Aeronáutica（巴西航空技术研究所）；The Aerospace Corporation（航空航天公司）；Arizona State University（亚利桑那州立大学）；Remcom Inc.（Remcom公司）；NASA Jet Propulsion Laboratory, California Institute of Technology（美国宇航局喷气推进实验室，加州理工学院）；Space Sciences Laboratory, University of California, Berkeley（加州大学伯克利分校空间科学实验室）；University of California, Los Angeles（加州大学洛杉矶分校）；Southwest Research Institute（西南研究院）
Plasma Turbulence in the Lunar Environment Across Solar Wind and Magnetotail Conditions: Observations from Chandrayaan-2 Radio Science experiment
Indian Institute of Technology Indore（印度印多尔理工学院）；Indian Space Research Organization（印度空间研究组织）；ISRO Telemetry Tracking and Command Network（印度空间研究组织遥测跟踪与指挥网络）
