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Piston core attempt resulted in a bent core casing.

Piston core attempt resulted in a bent core casing.
Piston core attempt resulted in a bent core casing.
Piston core attempt resulted in a bent core casing.
Piston core attempt resulted in a bent core casing.
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65178
Carman, Mary
Piston core attempt resulted in a bent core casing.
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09/04/2002
Carman-BentJPC45_deg.JPG
Attempting to piston core the consolidated shelf sediments in the Chukchi Sea caused the core casing to bend. Healy crew members and members of PI Lloyd Keigwin's cruise, Mea Cook (WHOI post doc) and Neil Gielstra (Coastal Marine Univ. coring technician), discuss different possible methods for extracting the PVC core liner from the metal casing. The vibra-core was subsequently deployed, bent in the same fashion after the first attempt and stuck in the bottom on the second attempt. Cruise HLY02-04.
Image of the Day caption:
While attempting to drive a piston corer into the compacted shelf sediments beneath the Chukchi Sea during a 2002 expedition, ocean researchers found themselves coping with bent and mangled equipment. WHOI postdoctoral investigator Mea Cook (yellow hardhat), Coastal Carolina University coring technician Neal Gielstra (black sweatshirt), and crew members of the Coast Guard Cutter Healy (in red) considered different methods for extracting the PVC core liner from the metalcasing. Later in the day, a vibra-core was deployed instead of the piston core; that gear was bent in the same fashion by the stubborn seafloor sediments and eventually got stuck in the bottom.
Photo by Mary Carman
© Woods Hole Oceanographic Institution
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