Received: 15 August 2000 JOP 126 Title: Active region non-thermal velocities and dynamics Author: L.K. Harra, S.A. Matthews, K. Ichimoto, H. Hara and T Watanabe Participating SOHO instruments: EIT/TRACE/SXT/Norikura Observatory Scientific Objective: To observe the line broadening and flows in an active region with Norikura Observatory in coronal lines. We intend to use the coronal red and green line. The excess line broadening in active regions is not fully understood. Various attempts have been made to determine whether it is due to waves or flows. We wish to use the high spectral and time resolution of Norikura to obtain spectral information alongwith high spatial and time resolution imaging data from EIT/SXT and TRACE to obtain information on dynamics. Combining the information will provide information on flows along the line of sight and perpendicular to the line of sight simultaneously. Scientific Justification: We have attempted this observation previously but had problems with bad weather at Norikura. Proposed dates:6-20 Sep (22:00-06:00 UT) Operational Considerations: observing an active region, preferably on the west limb. I will chose the target. I won't be at GSFC at that time since we are holding a summerschool at MSSL during this time period. Observing sequences: Using EIT (CME watch) - whatever is available TRACE predominantly Fe IX/X with other lines interleaved - time cadence faster than 4 mins, and FOV 6 arcmins. We are interested in small details. Target to be chosen before 18:00 UT on the previous day. CDS - study FL_AR2 will be run from 22:00 to ~01:00 UT (SYNOP to be moved by an hour or so during this study) with a time cadence of ~3.5 mins. The location should be at the top of the loop system in the active region. Need to know the target by 14:30 UT the day before the observation. Norikura - predominantly the Fe X line - FOV 500 x 200 " and time cadence ranging between 10-30 mins. EIT, TRACE, Norikura, SXT and CDS have agreed for this time period. EIT may be switched off for several days during this. I will send the target to everyone by 09:00 UT the day before the observing during the observing period. ***************************************************************** Louise Harra Email: lkh@mssl.ucl.ac.uk Solar Physics Group Mullard Space Science Laboratory Phone: 44 (0) 1483 204141 University College London Fax: 44 (0) 1483 278312 Dorking, Surrey, RH5 6NT, UK *****************************************************************