HR: 1400h
AN: SH23A-05    [Abstracts]
TI: Numerical Study of CME-like disturbances. 1-D simulations
AU: * Corona-Romero, P
EM: piter.cr@gmail.com
AU: Gonzalez-Esparza, A
EM: americo@geofisica.unam.mx
AU: Jeyakumar, S
EM: sjk@fisesp.igeofcu.unam.mx
AU: Casillas Perez, G
EM: gacp@geofisica.unam.mx
class='hr'> AB: We present a parametric study of ICME-like disturbances from close to the Sun (18 solar radii) to 1 AU. This is a 1-D HD model using the ZEUS 3D code (Stone and Norman, 1992). With this study we illuminate some basic aspects of the heliocentric evolution of these disturbances in the inner heliosphere. After their injection, the fast ICME-like disturbances present two deceleration steps: a slow deceleration propagation in the inner trajectory, and, after reaching a critical distance (at about .45 AU), an exponential deceleration propagation where the ICME- like velocity tends to equalize the ambient wind speed. This critical distance depends on the ICME initial parameters and the ambient wind characteristics.
DE: 0545 Modeling (4255)
DE: 2101 Coronal mass ejections (7513)
DE: 2111 Ejecta, driver gases, and magnetic clouds
DE: 2139 Interplanetary shocks
DE: 2164 Solar wind plasma
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Joint Assembly