  The observed iron K-alpha fluorescence lines in Seyfert galaxies provide
strong evidence for an accretion disk near a supermassive black hole as a
source of the line emission. Previous studies of line emission have considered
only geometrically thin disks, where the gas moves along geodesics in the
equatorial plane of a black hole. Here we extend this work to include effects
on line profiles from finite disk thickness, radial accretion flow and
turbulence. We adopt the Novikov-Thorne solution, and find that within this
framework, turbulent broadening is the most significant effect. The most
prominent changes in the skewed, double-horned line profiles is a substantial
reduction in the maximum flux at both red and blue peaks. We show that at the
present level of signal-to-noise in X-ray spectra, proper treatment of the
actual structure of the accretion disk can change estimates of the inclination
angle of the disk. Thus these effects will be important for future detailed
modeling of high quality observational data.
