MMS and the Heliophysics Geospace System Observatory: A Substorm Case Study
Presentation Type
Talk
Presenter Format
Virtual Meeting Talk
Topic
System Science
Start Date
11-5-2022 9:55 AM
Abstract
In August 2021, MMS serendipitously had its apogee in the magnetotail the same time as three THEMIS satellites. Additionally, the two missions’ ionospheric footpoints mapped to Canada, where many ground-based observatories such as magnetometers and riometers are in place. GOES-16 and GOES-17 were also nearby, similarly mapping to Canada. We utilize this fortunate conjunction of Heliophysics Geospace System Observatory to study a substorm from both ground and space. Fast plasma flows that transported magnetic flux and particles earthward were observed on the ground via spherical elementary currents. Injections were also observed by two riometers on the ground. In its inclined orbit, MMS was off of the neutral sheet, and likely slipped into the lobes.
MMS and the Heliophysics Geospace System Observatory: A Substorm Case Study
In August 2021, MMS serendipitously had its apogee in the magnetotail the same time as three THEMIS satellites. Additionally, the two missions’ ionospheric footpoints mapped to Canada, where many ground-based observatories such as magnetometers and riometers are in place. GOES-16 and GOES-17 were also nearby, similarly mapping to Canada. We utilize this fortunate conjunction of Heliophysics Geospace System Observatory to study a substorm from both ground and space. Fast plasma flows that transported magnetic flux and particles earthward were observed on the ground via spherical elementary currents. Injections were also observed by two riometers on the ground. In its inclined orbit, MMS was off of the neutral sheet, and likely slipped into the lobes.
