I believe the acceleration in the Northridge event was about 0.7 g
horizontally and 0.6 vertically.
Stan Scholl, P.E.
On Thu, 01 Mar 2001 15:32:03 -0800 "Gerard Madden" <GMadden(--nospam--at)mplusl.com>
> From the map, it looks like the maximum peak ground acceleration
> (PGA) was about 18%g or 0.18g.near the epicenter.
> Weren't Loma Prieta & Northridge PGA's much higher ? I thought some
> spots were about 0.6g in both quakes.
> When I heard 7.0 magnitude, I was expecting huge damage on the same
> order or worse than 89 & 94. Apparently the depth of the earthquake
> had a large effect on the shaking intensity compared to Loma Prieta
> which had a similar magnitude with a much shallower focus.