Accession Number : ADD002862

Title :   Apparatus for Collecting Deep-Sea Sediment Pore Water.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Barnes,Ross O

Report Date : 26 Apr 1974

Pagination or Media Count : 18

Abstract : The patent application relates to oceanographic sediment-collecting instruments, and in particular, to means for collecting the pore water of deep-sea sedimentary deposits. The collector filters and encapsulates pore water, in-situ, from unconsolidated sediments. A pressure casing mounts a collection cylinder having a valved inlet opening for receiving the sediment pore water through a 1 micrometer filter. The valve is spring pressed to a closed position and opens in response to hydrostatic pressure. A second valve closes the inlet to the spring-pressed poppet valve. Trigger means initiate the opening of the second valve to expose the poppet valve to the hydrostatic pressure. Preferably, the exposure is accomplished in a delayed manner to assure proper positioning of the sampler before admission of the pore water to the cylinder.

Descriptors :   *Oceanographic equipment, *Samplers, *Deep oceans, *Sediments, *Ocean bottom sampling, Collection

Subject Categories : Physical and Dynamic Oceanography
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE