HR: 11:05h
AN: SH32A-04    [Abstracts]
TI: Transport in the Interplanetary Medium of Coronal Mass Ejections
AU: * Lara, A
EM: alara@geofisica.unam.mx
AF: Instituto de Geofisica UNAM, Instituto de Geofisica UNAM, C.U. Mexico D.F., 04510, Mexico
AU: Ontiveros, V
EM: v.ontiveros@gmail.com
AF: Instituto de Geofisica UNAM, Instituto de Geofisica UNAM, C.U. Mexico D.F., 04510, Mexico
AU: Borgazzi, A
EM: andrea@dge.inpe.br
AF: Divisao de Geofisica Espacial, Instituto Nacional de Pesquisas Espaciais, Av. Dos Astronautas 1758, Sao Jose dos Campos, 12227, Brazil
AB: We present preliminary results of the transport study of 52 Geo-effective Interplanetary Coronal Mass Ejections (ICMEs). We analyze different CME, ICME and ambient solar wind parameters of 52 events from the Coordinated Data Analysis Workshop (CDAW) data base. We found a linear relatioship between CME and Shock speeds, which may be used to identify the related (CME and in situ) pair events. The major finding of this study is a relationship between the ambient density and the ICME driven shock speed, which apply only to low ambient densities and can be used to quantify the moment exchange between the ICME and the ambient solar wind. We discuss the implications of this finding in terms of the ICME transport in general and the Sun-Earth ICME travel time, in particular.
DE: 7500 SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY
DE: 7513 Coronal mass ejections (2101)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Joint Assembly