Oral title: Probing the Nature of Turbulence in Protoplanetary Disks with ALMA

Oral abstract: I present the first set of predictions for observational signatures of 
magnetically driven turbulence in protoplanetary disks. We predict that molecular lines 
observed with ALMA will reveal significant non-thermal broadening associated with 
turbulence.  However, preliminary observations suggest that such turbulence is extremely 
weak, bringing into question our understanding of accretion processes.