Labyrinth of doom: A device to minimize the “swimmer” component in sediment trap collections
Labyrinth of doom: A device to minimize the “swimmer” component in sediment trap collections
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厄运迷宫：一种最大限度减少沉积物收集器中“游泳者”成分的装置
DOI：
10.4319/lo.1990.35.6.1376
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发表时间：
1990
影响因子：
4.5
通讯作者：
K. Coale
中科院分区：
文献类型：
--
作者：
K. Coale
已经开发出一种简单的装置，用于区分沉积物收集中的“游泳者”和“非游泳者”。它由一系列漏斗组成，将被动下沉的物质集中到中央收集管中，而游泳者则随机分布在内收集管和外收集管之间。游泳者/非游泳者分级的实现程度取决于漏斗的数量和间距以及内收集管面积与外收集管面积的比率。尽管内部收集管样本中含有一些游泳者，但其数量比没有该装置时在鳕鱼末端收集到的要少得多。此外，外管内容物不含被动下沉材料，提供了可与内部收集管内容物进行比较的“纯游泳者”部分。作为东北太平洋 VERTEX 计划的一部分，该设备已在 Soutar（圆锥形）和 Knauer（圆柱形）型疏水阀中多次成功部署。
A simple device used to discriminate between “swimmers” and “nonswimmers” in sediment trap collections has been developed. It consists of a series of funnels which concentrate passively sinking material into a central collection tube, whereas swimmers are distributed randomly between the inner and outer collection tubes. The degree to which swimmer/nonswimmer fractionation is achieved depends on the number and spacing of funnels and the ratio of inner to outer collection tube areas. Although inner collection tube samples contain a few swimmers, there are considerably fewer than are collected in cod ends without this device. Furthermore, outer tube contents are devoid of passively sinking material providing a “pure swimmer” fraction which can be compared to inner collection tube contents. This device has been successfully deployed on many occasions in traps of the Soutar (conical) and Knauer (cylindrical) type as part of the VERTEX program in the NE Pacific.