MIXING IT UP IN GOTHAM—WHOI Senior Research Assistant Jay Sisson (left) and Engineer Craig Marquette maneuver a box corer after plucking a 30-centimeter-deep sample of sediment from the bottom of the Hudson River in June 2001. Within sight of Manhattan, the researchers measured the rate at which sediment accumulates along this intersection between salty ocean water and fresh river water. (Photo by Rocky Geyer, Woods Hole Oceanographic Institution)[back]
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