HR: 16:00h
AN: SH14A-01    [Abstracts]
TI: Automatic CME Detection from Coronagraph Image Pairs
AU: * Liewer, P C
EM: pliewer@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, MS 169-506, Pasadena, CA 91109 United States
AU: DeJong, E M
EM: eric.dejong@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, MS 169-506, Pasadena, CA 91109 United States
AU: Hall, J R
EM: jeffrey.r.hall@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, MS 169-506, Pasadena, CA 91109 United States
AU: Lorre, J J
EM: Jean.J.Lorre@jpl.nasa.gov
AF: Jet Propulsion Laboratory, California Institute of Technology, MS 169-506, Pasadena, CA 91109 United States
AB: We have developed a technique for the automatic detection of coronal mass ejections using two sequential coronagraph images. The technique is based on tracking arc-like features from one image to the next; the feature's velocity is also determined. The method has been developed and tested using LASCO C2 and C3 data. The goal of this work is to develop an automatic CME detection algorithm that can be used on board the STEREO spacecraft to preferentially downlink data containing CMEs from an onboard "rotating" data buffer. Results for this detection technique compare very favorably with CMEs identified in the LASCO CME catalog (http://cdaw.gsfc.nasa.gov/CME_list/). For the periods when results were compared, no time periods with significant CMEs were missed using the automatic technique.
DE: 7509 Corona
DE: 7513 Coronal mass ejections (2101)
DE: 7594 Instruments and techniques
SC: SPA-Solar and Heliospheric Physics [SH]
MN: Fall Meeting 2005