Data Plots of HILDCAAs in 1998

HILDCAA stands for High-Intensity Long-Duration Continuous AE Activity, as defined by Tsurutani and Gonzalez (1987).

These plots were developed as one-day data plots for the HILDCAA events identified by the team. Data obtained by the ACE spacecraft, the ground magnetic field, and four LANL geosynchronous satellites are plotted.

From top, (1) interplanetary magnetic field (magnitude, and the x, y, z components), (2) proton density, bulk speed of the solar wind, (3) magnetic field activity (as described by the AU, AL, SYM, ASY indices), and (4) proton differential fluxes [particles/cm2/second/steradian/keV] are shown. In proton differential fluxes plots, six lines represent the variations in different energy bands (50 - 75, 75 - 113, 113 - 170, 170 - 250, 250 - 400, and 400 - 670 keV). is the time when the satellite was at 12 LT, whereas is the time when the satellite was at 0 LT.

Data Plots (gif file)