This page shows a simulation of the B-83 (largest bomb in current US arsenal) (1.2 Mt) nuclear bomb (1200 kt) detonated over Beijing, China. The map displays the estimated fireball, the zones of heavy, moderate and light blast damage, thermal radiation and ionizing radiation. Click «What does that mean?» for a detailed legend, or run your own detonation on the main page.
A B83 over Beijing
This map places the 1.2-megaton B83, the largest bomb in the current US arsenal, as an airburst over central Beijing. Beijing is laid out in rings, which makes the scale easy to read: the 3 km zone of total destruction covers the Forbidden City, Tiananmen Square, Zhongnanhai and essentially everything inside the Second Ring Road. The 5 psi ring at about 7.4 km, where most residential buildings collapse, runs out to the Third Ring Road and in places to the Fourth.
Third-degree burns reach about 13.5 km in clear weather — past the Olympic Park in the north, the CBD and Guomao in the east, Zhongguancun and Beijing West railway station — and the 1 psi ring of broken windows, about 23 km in radius, extends beyond the Sixth Ring Road into Tongzhou, Changping and Daxing. Well over fifteen million people live inside that outer circle, and the flat North China Plain offers almost no terrain shadow.
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