Download - C. May 12, 1997 Interplanetary Event
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C. May 12, 1997 Interplanetary Event
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Ambient Solar Wind Models
SAIC 3-D MHD steady state coronal model based on photospheric field maps
CU/CIRES-NOAA/SEC 3-D solar wind model based on potential
and current-sheet source surface empirical models
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CME Cone Model
Conceptual model:CME as a shell-like region
of enhanced densityGeometrical and kinematical fitting:
Dependence of predicted CME haloson the latitude, longitude, angular
width, and velocity[ Zhao et al., 2001 ]
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CME Cone Model
[ Zhao et al., 2001 ]
Best fitting for May 12, 1997 halo CME
• latitude: N3.0• longitude: W1.0• angular width: 50 deg
• velocity:650 km/s at 24 Rs
(14:15 UT)• acceleration: 18.5 m/s2
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Boundary Conditions
Ambient Solar WindAmbient Solar Wind
+ Plasma Cloud
CASE - 1 CASE - 2
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Evolution of Parameters at Earth
Ambient Solar WindAmbient Solar Wind
+ Plasma Cloud
CASE - 1 CASE - 2
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May 12, 1997 Interplanetary Event
ICME propagates into bi-modal solar wind
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May 12, 1997 Interplanetary Event
Fast stream follows the ICME
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May 12, 1997 Interplanetary Event
ICME propagates into enhanced density at CIR
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May 12, 1997 Interplanetary Event
IMF is distorted by shock compression and draping around ICME
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May 12, 1997 Interplanetary Event
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May 12, 1997 Interplanetary Event