caa a22 4500 445345896 CHVBK 20180317142828.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s11207-011-9742-5 doi (NATIONALLICENCE)springer-10.1007/s11207-011-9742-5 The Correlation between the Magnetic and Velocity Fields on the Full Solar Disk [Elektronische Daten] [M. Zhao, X. Wang, H. Zhang] A possible correlation between the magnetic and velocity fields has been analyzed based on the SOHO/MDI magnetograms and Dopplergrams. It is found that the observed large-scale weak magnetic field (weaker than 50 G (gauss)) is correlated with the velocity statistically. The curves of u⋅b with latitude, where u and b are the velocity and magnetic fields in a rectangular region (±15○ in longitude, ±45○ in latitude) on the Sun, show the same patterns in the years 2000, 2004, and 2007. The patterns indicate that u and b are positively correlated near the equator but are anti-correlated at the middle latitudes. For a strong magnetic field between 50 G and 3000 G, the curves of u⋅b with latitude show the same tendencies at the middle latitudes. Near the equator, however, the slope of the curve is positive in 2000 and is negative in 2004 and 2007. In addition, we give an estimation for the amplitude of the cross helicity h χ ( $h_{\chi}=\overline{\mathbf{u}\cdot\mathbf{b}}$ ) inferred from the MDI data, which is of the order of 103G m s−1 near the center of the solar disk. Springer Science+Business Media B.V., 2011 Activity nationallicence Magnetic topology nationallicence Photosphere nationallicence Zhao M. Key Laboratory of Solar Activity, National Astronomical Observatory, Chinese Academy of Sciences, Beijing, China aut Wang X. Key Laboratory of Solar Activity, National Astronomical Observatory, Chinese Academy of Sciences, Beijing, China aut Zhang H. Key Laboratory of Solar Activity, National Astronomical Observatory, Chinese Academy of Sciences, Beijing, China aut Solar Physics Springer Netherlands 270/1(2011-05-01), 23-33 0038-0938 270:1<23 2011 270 11207 https://doi.org/10.1007/s11207-011-9742-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9742-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhao M. Key Laboratory of Solar Activity, National Astronomical Observatory, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 700 1- Wang X. Key Laboratory of Solar Activity, National Astronomical Observatory, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 700 1- Zhang H. Key Laboratory of Solar Activity, National Astronomical Observatory, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 270/1(2011-05-01), 23-33 0038-0938 270:1<23 2011 270 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer