Image Courtesy of Justin Kane
I recently flew as a passenger on a A330-200 similar to the one in the image. I used a Slam Stick X Vibration Data Logger to measure the landing shock, with the sensor mounted on the cabin floor. The acceleration time histories for two axes are shown in the following figures.
The vertical axis response has several spectra between 0.5 and 2.0 Hz.
See also: Landing Shock
– Tom Irvine