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.
Simulated temperature distribution after 300 s freezing. Black isotherms denote 10°C steps. 0°C, -10°C and -20°C isotherms are highlighted in white, cyan and green, respectively. Crosses at -10°C and -20°C isotherms depict the maximal depth of the corresponding isotherm.
