John E. Sanders, Gerald M. Friedman, Robert S. Bennin; Procedure for recovering bottom and interstitial waters from cores of sandy sediments from the continental shelf. Journal of Sedimentary Research ; 38 (2): 683–684. doi: https://doi.org/10.1306/74D71A46-2B21-11D7-8648000102C1865D
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Various coring techniques can be used to recover not only bottom sediment but also a sample of bottom water and the interstitial water below the water/sediment interface. Commercially available plugs inserted at the top of the core liner tube create a tight seal. From such sealed cores segments can be cut off one at a time from the bottom. Within each is a sample of undisturbed interstitial water, which can be recovered in a pressure-type squeezing vessel.