Reference for the July 15, 16, 2000 Magnetic Clouds

R.P. Lepping, D. B. Berdichevsky, L.F. Burlaga, A. J. Lazarus, J. Kasper, M. D. Desch, C. -C. Wu, D. V. Reames, H. J. Singer, C. W. Smith and K. L. Ackerson, The Bastille Day Magnetic Clouds And Upstream Shocks: Near Earth Interplanetary Observations, Solar Physics, vol. etc. "submitted" 2002.

A three-day overview of the complex of events in terms of (from top to bottom): the energetic particle flux (in units of [cm2 sr s MeV]-1 from WIND/LEMT), magnetic field (magnitude, |B|; latitude, 0B; and longitude, FB, respectively, from WIND/MFI, and plasma quantities (bulk speed, V; proton density, NP; and proton thermal speed, VTh). (All are 15 minute averages). The three species of energetic particles are shown by the key where a closed dot represents 7.4-9.64 MeV/nucleon (n) of He4, a cross is 9.2-13.4 MeV/n of O, and a triangle is 9.3-12.5 MeV/n of Fe. When 0B is negative the region between the curve and the zero line is shaded. H-CME (big dashed vertical line) indicates the time of a halo coronal mass ejection, S1 and S2 (solid vertical lines) designate interplanetary shocks, MC2 indicates a magnetic cloud, and MC1 is a likely magnetic cloud; the boundaries of these clouds are indicated by dashed lines. The speeds (as are all plasma quantities) are from WIND/SWE investigation, except for those in a region of about 8 hours just before S2, which are from GEOTAIL/CPI and shown by open circles.

Comparisons of various quantities (in GSM coordinates) associated with the solar wind-magnetosphere interaction. These are (from top to bottom): The interplanetary magnetic field magnitude (|B|), north-south component of the IMF (BZ), solar wind ram pressure (PRAM), estimated stagnation point standoff distance [RMP, from Choe et al., 1973 (solid-curve), and from Shue et al., 1997 (dotted-curve)], BZ component of the magnetic field from geosynchronous satellite GOES [called BZ (GEO)], Akasofu (1981) e, induced electric field (VBZ), and the geomagnetic storm index Dst, for the three days of interest. (All are 15 minute averages, except Dst). In panel 2, when BZ is negative the regions between the curve and the zero-line are shaded.