ACE Observations of the Bastille Day 2000 Interplanetary Disturbances |
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| Authors: | Smith CW Ness NF Burlaga LF Skoug RM McComas DJ Zurbuchen TH Gloeckler G Haggerty DK Gold RE Desai MI Mason GM Mazur JE Dwyer JR Popecki MA Möbius E Cohen CMS Leske RA |
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| Institution: | (1) Bartol Research Institute, University of Delaware, Newark, Delaware, 19716, U.S.A;(2) Code 692, NASA/Goddard Space Flight Center, Greenbelt, MD, 20771, U.S.A;(3) Los Alamos National Laboratory, Los Alamos, NM, 87545, U.S.A;(4) Space Science and Engineering Division, Southwest Research Institute, P.O. Drawer 28510;(5) Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, USA;(6) Applied Physics Laboratory, Johns Hopkins University, 11100, Johns Hopkins Road, Laurel;(7) Department of Physics, University of Maryland, College Park, MD, U.S.A;(8) Aerospace Corporation, El Segundo, CA, 90245-4691, U.S.A;(9) Florida Institute of Technology, Melbourne, FL, 32901, U.S.A;(10) Institute for the Study of Earth, Oceans and Space, University of New Hampshire, Durham;(11) California Institute of Technology, Pasadena, CA, 91125, U.S.A |
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| Abstract: | We present ACE observations for the six-day period encompassing the Bastille Day 2000 solar activity. A high level of transient
activity at 1 AU, including ICME-driven shocks, magnetic clouds, shock-accelerated energetic particle populations, and solar
energetic ions and electrons, are described. We present thermal ion composition signatures for ICMEs and magnetic clouds from
which we derive electron temperatures at the source of the disturbances and we describe additional enhancements in some ion
species that are clearly related to the transient source. We describe shock acceleration of 0.3–2.0 MeV nucl−1 protons and minor ions and the relative inability of some of the shocks to accelerate significant energetic ion populations
near 1 AU. We report the characteristics of < 20 MeV nucl−1 solar energetic ions and < 0.32 MeV electrons and attempt to relate the release of energetic electrons to particular source
regions. |
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