ocr: UVCS UVCS also has made the first measurements of ion outflows in CO- ronal streamers now believed to be the source of slow speed wind streams. It discovered that the oxygen velocity distribution becomes comparable to that of the hydrogen at 4 solar radii in certain streamers indicating the importance of waves in streamers. UVCS observations of coronal mass ejections (CME) have yielded the first measurements of velocities transverse to their primary direction of motion, the temperature distributions of ions present and the three dimensional structure of the CME material. UVCS determinations of ...
