TY - JOUR A1 - Xiong, C. A1 - Lühr, H. A1 - Wang, H. A1 - Johnsen, M. G. T1 - Determining the boundaries of the auroral oval from CHAMP field-aligned current signatures – Part 1 JO - Ann. Geophys. J1 - ANGEO VL - 32 IS - 6 SP - 609 EP - 622 Y1 - 2014/06/04 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/32/609/2014/ L1 - https://angeo.copernicus.org/articles/32/609/2014/angeo-32-609-2014.pdf DO - 10.5194/angeo-32-609-2014 ER -