Constantinos Papadimitriou
(Department of Physics, National and Kapodistrian University of Athens, Greece; National Observatory of Athens, Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, Penteli, Greece; Space Applications Research and Consultancy (SPARC), Athens, Greece)
Radial diffusion, driven by ultra-low frequency (ULF) waves, is a key process contributing to the acceleration and loss of electrons in the outer radiation belt by contributing to their inner or outer transport. Ground magnetometers give us continuous observations of such ULF waves but their usefulness is limited by the models used to transform ground measurements into their progenitor fields in space. A typical assumption is that of a dipole field, and so measurements can only be reliably performed during the day. We have chosen a series of magnetometer stations at different sets of geomagnetic latitudes, with stations in each set separated by several hours in longitude, and compared their Pc5 ULF power measurements, and the resulting calculated radial diffusion coefficients, from 11 years of their data. By comparing the mismatch of their results when they were in different time sectors, and for different values of Kp, we were able to assess the median deviation of measurements conducted before dawn or after dusk with those on the day side. This will be useful for projects requiring a longitudinally limited array of magnetometers or for parts of the world where such coverage is limited, such as FARBES (Forecast of Actionable Radiation Belt Scenarios).
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Dr
Adamantia Zoe Boutsi
(Department of Physics, National and Kapodistrian University of Athens, Greece; National Observatory of Athens, Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, Penteli, Greece)
Dr
Christos Katsavrias
(Department of Physics, National and Kapodistrian University of Athens, Greece)
Constantinos Papadimitriou
(Department of Physics, National and Kapodistrian University of Athens, Greece; National Observatory of Athens, Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, Penteli, Greece; Space Applications Research and Consultancy (SPARC), Athens, Greece)
Dr
Georgios Balasis
(National Observatory of Athens, Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, Penteli, Greece)
Prof.
Ioannis A. Daglis
(Department of Physics, National and Kapodistrian University of Athens, Greece; Hellenic Space Center, Athens, Greece)
Dr
Janos Lichtenberger
(Eötvös Loránd University, Hungary; ELKH-ELTE Space Research Group, Hungary)
Dr
Marina Georgiou
(Department of Physics, National and Kapodistrian University of Athens, Greece)
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