Initial Time-Distance Helioseismology Results from SDO/HMI. I.

The Helioseismic and Magnetic Imager on Solar Dynamics Observatory provides uninterrupted high-resolution observations of solar oscillations over the entire disk. This gives a unique opportunity for mapping subsurface flows and wave-speed structures and investigating their role in the Sun's dynamics and magnetic activity on various scales by methods of local helioseismology. A data analysis pipeline for the time-distance helioseismology analysis has been developed and implemented at the SDO Joint Science Operation Center (JSOC) at Stanford. It provides near-real time processing of the helioseismology data. We present the basic characteristics and capabilities of the pipeline, initial time-distance measurement results, and compare these with the simultaneous SOHO/MDI measurements.