  Although the Blandford-Payne process, the standard model for the production
of AGN jet outflow, has been fully acknowledged and long-known in both the
theoretical Astrophysics and observational Astronomy communities, subsequent
research works to gain observational supports have been quite rare. In the
present work, therefore, we would like to suggest a likely event and encourage
its observation which demonstrates observational supports for the
Blandford-Payne process. That is, we propose the coupling of it to the
well-known Bardeen-Petterson effect. In order for this set-up to comply with
our objective stated above, however, the two coupled processes need to be
well-resolved. We, therefore, carefully study and present the condition for
this to take place. We also point out that this major concern of our present
work allows us to measure the strength of the intra-galactic magnetic field
which has been known to be uneasy and unclear even in the galaxy observation
Astronomy community for a long time.
