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. |
Typical damage to hollow-clay, unreinforced masonry infill walls which are common in buildings throughout Iran. The unreinforced masonry is usually not structural but is attached outside the load-bearing structure. This masonry tends to fall away from the wood or steel superstructure during earthquakes. These buildings had to be evacuated even though they did not fail structurally. 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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