Fig. 4
From: Unusual enhancement of ~ 30 MeV proton flux in an ICME sheath region
Enlarged view of the magnetic cavity embedded in the ICME sheath. a–c Variation of the magnitude (|B|), latitudinal direction (θB), and longitudinal direction (φB) of the magnetic field vector measured by ACE (black) and Wind (brown). d–f Same as a–c but measured by ACE (black) and ARTEMIS (blue). To account for the solar wind propagation, the ACE data are shifted in time by 5 and 40 min for a–c and d–f, respectively. In d and e, data from P1 (THB) of the twin spacecraft mission ARTEMIS are shown with the time resolution of ~ 0.25 s. Due to artificial noise in the φB component of this data product, data from P2 (THC) are used in f with the time resolution of ~ 3 s