Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Particle release heights and fraction of total 137Cs activity corresponding to each release height for the first test at the Semipalatinsk Nuclear Test Site.
| Release height (m AGL) |
Height increment (m AGL) |
Fraction of total 137Cs activity |
|---|---|---|
| 450 to 2700 | 450 | 0.12 |
| 2875 to 3750 | 175 | 0.10 |
| 3925 to 4800 | 175 | 0.32 |
| 5150 to 6900 | 350 | 0.46 |
| 7075 to 7950 | 175 | 0.32 |
| 8125 to 9000 | 175 | 0.10 |
