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A Slice of Science

October 12, 2017

The 2017 WHOI Ocean Science Journalism Fellows listen as physical oceanographer Magdalena Andres describes one of the many scientific instruments she uses in her research: a pressure sensor equipped inverted echo sounder, or PIES. The device is lowered from a ship to the seafloor, where it measures the pressure, temperature, and salinity of the water above it. This spring, Andres deployed several PIESs on a cruise near Cape Hatteras, N.C., as part of the multi-year PEACH project to study recent variations in the Gulf Stream. (Photo by Véronique LaCapra, Woods Hole Oceanographic Institution)