piston corer

(redirected from piston corers)

piston corer

[′pis·tən ¦kȯr·ər]
(mechanical engineering)
A steel tube which is driven into the sediment by a free fall and by lead attached to the upper end, and which is capable of recovering undistorted vertical sections of sediment.
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To efficiently conduct survey research of ocean floor resources, it will be capable of operating such state-of-the-art equipment as a seismic research system for investigating crustal structure, large piston corers and a seafloor-mounted excavator for collecting seabed samples, a remotely operated vehicle (ROV) and an autonomous underwater vehicle (AUV).
Through the use of shallow piston corers, we have successfully collected 12 sediment cores up to 4 m in length from Weeks Bay, a small estuary located in Baldwin County, Alabama.