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Chief Marine Science Technician Karen Aquino launches an XBT (Expendable Bathythermograph) in the rough seas. XBTs give oceanographers a quick look at the water column by reporting temperature vs. depth back to the ship as they sink. They are not retrieved after they are used, thus the expendable part of their name. Aboard the USCGC Healy in the Chukchi Sea. 71.01°, -167.74°.

Credit to Read: 
Photo by Bill Schmoker (PolarTREC 2015), Courtesy of ARCUS
Photographer: Bill Schmoker
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Image icon Download Schmoker_L1050207.jpg (6.24 MB)
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