Videos

The following videos are from our second experiment (RCK02). The first video is a side view of our clayey levee atop peat during an earthquake with a peak ground acceleration (PGA) of 0.6g. During our tests the centrifugal acceleration reached 57g meaning that an earthquake that would last 57s in "real life" would last 1s in our centrifuge tests.

In the previous videos the ground motion is barely noticeable due to the speed at which it occurs. The next video shows the same video 50 times slower.

In the second part of our experiment we substituted the clayey levee with a sandy levee, and create a reservoir on side of the levee to model the real field conditions. The following video shows a view of the levee crest during an earthquake at model scale with a PGA of 0.4g. You can see the levee fill liquefying, losing its shape and settling, allowing water from the reservoir to rush into the island.

The last video shows the same earthquake from the side, slowed down 10 times. Once again you can clearly see the levee fill liquefying, resulting in a loss of freeboard of the levee, resulting in water rushing in the island.