MHD simulation of two successive interplanetary disturbances driven by cone-model parameters in IPS-based solar wind

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Abstract

[1] We present the measurement-based MHD simulation model of the interplanetary disturbances; the quiet solar wind is obtained with the MHD-based analysis method for the interplanetary radio scintillation (IPS) measurement data, and the interplanetary disturbance parameters, such as speed, direction and angular size of the expanding coronal mass ejection (CME), are determined from the SOHO LASCO/C3 data with the Cone-model. We chose the two successive interplanetary disturbances resulting from two flare-associated halo CMEs of April 2002. The simulated interplanetary shocks are compared with the nearby-Earth measurement, and the well produced shock arrivals to the Earth implied the ability of the cooperation of the Cone-model, the IPS-analysis and MHD simulation. It is found that the second interplanetary disturbance propagated faster in the rarefaction region of the first event, implying that the multi-event simulation is important to enhance the simulation model.

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