Bringing up the days’ catch—mud from the bottom of a frozen lake
near the town of Inuvik in the Canadian Arctic—Joint Program student Camilo
Ponton holds the 2.5-meter piston corer used for sampling, flanked by
WHOI researchers Liviu Giosan (right) and Daniel Montlucon. The
lakefloor sediment layers hold clues to past climate and river flows in
the Mackenzie River Delta.
(Photo courtesy of Liviu Giosan, Woods Hole Oceanographic Institution)