Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, M. Mehrain, Dames and Moore. |
The presence of a reinforced concrete bond beam (a concrete beam poured on the top of walls) prevented a roof collapse in this building. This construction practice was generally effective in reducing the total collapse of structures. Image Credit: M. Mehrain. Dames and Moore June 20, 1990 Northern Iran earthquake A magnitude 7.7 earthquake occurred in the Gilan Province between the towns of Rudbar and Manjil in northern Iran on Thursday, June 21, 1990 (June 20 at 21:00 GMT). The event, the largest ever to be recorded in that part of the Caspian Sea region, may have been composed of two or more closely-spaced earthquakes occurring in rapid succession. These quakes, exceptionally close to the surface for this region, were also unusually destructive. Event Data:
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