Submarine sediment interstitial water in-situ acquisition system

A seabed sediment and collection system technology, applied in sampling devices and other directions, can solve problems such as pollution, inability to collect time-series samples, and inability to obtain time-series samples, and achieve the effects of high time resolution and improved sampling efficiency

Inactive Publication Date: 2011-10-19
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The operation process of centrifugation or pressing may cause pollution and changes in the sediment interstitial water itself due to changes in environmental conditions. Therefore, the interstitial water obtained by centrifugation or pressing methods often cannot reflect the original situation well, and Unable to get ti

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  • Submarine sediment interstitial water in-situ acquisition system
  • Submarine sediment interstitial water in-situ acquisition system

Examples

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Embodiment 1

[0014] Embodiment 1: Assemble the infiltration connector and the filter ring to form the interstitial water in-situ layered infiltration connector 7; the filter ring is installed between adjacent connectors, and the sampling ports corresponding to each filter ring layer are respectively passed through A PE pipe with an outer diameter of 3mm and an inner diameter of 1mm is connected to the fluid collector 5; the fluid collector 5, the releaser 4 and the floating ball 2 are installed on the bracket 3, and configured so that the buoyancy in seawater is greater than the gravity; the bracket 3 passes through the releaser and The layered permeable connectors are connected to each other, and the composition is as follows figure 1 The sampling system shown. In the working sea area, hoist the assembled sampling system into the water from the survey ship and insert it into the sediment; record the operation position, and the survey ship leaves. At this time, on the seabed, the interstit...

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Abstract

The invention relates to a submarine sediment interstitial water in-situ extraction system, which can realize the long-term continuous in-situ layered acquisition of sediment interstitial water samples. The system consists of a lifting joint, floating balls, a bracket, releasers, fluid acquirers, connecting parts and a layered penetration connecting elements, wherein the lifting joint is positioned above the bracket; the layered penetration connecting element is positioned below the bracket, and is formed by assembling penetration connecting elements and filtering rings; the filtering rings are arranged between the connecting parts; sampling ports of each filtering ring are connected with the fluid acquirers by pipelines respectively; and the fluid acquirers, the releasers and the floating balls are arranged on the bracket respectively. After sampling is finished, a releaser deck unit transmits a releasing instruction to the releasers on board to separate the fluid acquirers from an in-situ layered penetration part, and the fluid acquirers float up to the sea surface for recycling. The system realizes the long-term continuous in-situ layered acquisition of sediment interstitial water, and can continuously acquire time sequence samples of a year by once deployment and recycling operation.

Description

technical field [0001] The invention belongs to the technical field of detection of substances or objects, and in particular relates to an in-situ collection system for interstitial water in seabed sediments. Background technique [0002] In the ocean, as the particulate matter in the water column settles to the seafloor to form sediments, part of the seawater will remain in the spaces between the sediment particles, forming sediment interstitial water. The physical and chemical characteristics of interstitial water in seabed sediments are a comprehensive reflection of various processes in sediments. The study of interstitial water can provide an important window for understanding the relevant processes of the seabed. Therefore, a large number of researches on interstitial water in sediments have been carried out at home and abroad. . A growing body of data indicates that processes occurring in seafloor sediments not only vary spatially but also have time-varying signatures...

Claims

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Application Information

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IPC IPC(8): G01N1/10
Inventor 周怀阳季福武杨群慧王虎吴正伟王存明李汶钊
Owner TONGJI UNIV
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