WHOI researchers and international colleagues return to a waiting helicopter after a long day near the North Pole in April 2011. In just eight hours the team installed four instruments in the ice, including an Ice-Tethered Profiler (ITP), whose yellow buoy is in the foreground. The ITP is the latest in a series of ITPs seeded in the Arctic over several years to continuously sample ocean properties under the ice as the ice floe it sits on, drifts with ocean currents. (Photo courtesy of Rick Krishfield, Woods Hole Oceanographic Institution)[back]
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