There was a workshop on the Big Island in March this year about the
impact on the observatories and some of the presentations are available
here:
http://www.gemini.edu/index.php?option=content&task=view&id=227
If that doesn't work, just go to
www.gemini.edu and look under the general
announcements section, about halfway down the page.
I don't know if there's useful information there for anyone but it does
show the impact of the EQ on the sites (unfortunately I wasn't an
attendee as I was away at the time, but was involved in the recovery of
one of the telescopes after the event).