piston corer

tool

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Last updated

July 2, 2026

Quick Summary

A piston corer is a specialized tool used in core sampling, particularly for undersea exploration. It's designed to collect long, cylindrical samples of seafloor sediment. Unlike simpler corers, the piston corer uses a piston inside the tube. As the tube is driven into the sediment, the piston creates a vacuum, effectively sucking the sediment sample into the tube. This method minimizes friction and disturbance, allowing for the recovery of longer and more intact cores, sometimes up to 20 meters. These detailed samples are crucial for studying past oceanic conditions and geological history.1

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undersea exploration
Exploration of the seafloor and the Earth’s crust
…cores are taken by the piston corer. In this device, a closely fitted piston attached to the end of the lowering cable is installed inside the coring tube. When the coring tube is driven into the ocean floor, friction exerts a downward pull on the core sample. The hydrostatic pressure…
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…cores are taken by the piston corer. In this device, a closely fitted piston attached to the end of the lowering cable is installed inside the coring tube. When the coring tube is driven into the ocean floor, friction exerts a downward pull on the core sample. The hydrostatic pressure…
Read More