Easter Microplate Expedition
March 27, 2005 Day 16
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Alvin at the surface during launch, from below. The science basket is at left, and a
viewport through the titanium sphere is just visible where the white fiberglass shell is absent, up and to the right from the basket. Photo by Mark Spear,
Alvin dive# 4092, 32°S
Cindy was the only science observer; Tony was the pilot and Greg the pilot-in-training. Their site was a vent that Bob visited in 1999: "Just like today, it was nice and the weather was good." Cindy, who used to be an Alvin pilot, declared it was her best dive ever! They found the line of Snow Ghost chimneys and the field of black-smokers shaped like saguaro cactus as before. The water temperature at a vent was 347°C. They also found multitudes of Oasisia tubeworms, scallops, and a carpet of small red worms. They also collected a glassy piece of lava and took a suction sample that was full of tiny copepods.
This was Greg's very first dive (he is an Alvin tech and is now a pilot-in-training), so he was treated to a traditional rite of passage by the
Alvin Group. Greg took it with a smile. The peanut gallery enjoyed the show from a distance.
All underwater photos were taken with the submersible Alvin, and are courtesy of Woods Hole Oceanographic Institution.