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.
Vertical profiles of temperature and pH along a transect from the surrounding area to the vent center for June 1996. The profiles from September 1996 were nearly identical. Sediment depth is indicated by the following symbols: □, 0 cm; ○, 1 cm; ▴, 2 cm; ⧫, 3 cm; ■, 4 cm; ●, 5 cm.
