Construction of a Time Series Lander: An Investigation of the Coupling Between Particle Rain and Sediment Diagenesis

[03:35 . 86]贝勒尔森为了了解海洋的化学性质，人们必须以某种方式测量物质在海洋边界进入和离开海洋的速率。在这项研究中，首席研究员将设计、建造和测试一个“测试系列着陆器”（TSL），这是一种直接测量溶解物质通过沉积物-水界面通量的设备，方法是按顺序采集一系列覆盖的水样。TSL将使用其八个“蜘蛛臂”中的每一个在预设时间将一个倒置的腔室放置在沉积物表面。通过在一段时间内对舱内的海水进行采样（最多可编程5次，采样周期从几分钟到几个月不等），人们可以收集数据来计算沉积物-水界面上感兴趣的溶质通量。在本研究中开发的TSL的一个重要的节省时间和金钱的特点是它能够作为一个无人值守的“自由车辆”运行，可以编程，从船上部署，并在几周或几个月后取回。

9633586 Berelson In order to understand the chemistry of the ocean one must somehow measure the rates that substances enter and leave the ocean at its boundaries. In this study the principal investigator will design, construct, and test a "test-series lander" (TSL) - a device that directly measures the flux of dissolved substances across the sediment-water interface by taking a series of overlying water samples in sequence. The TSL will use each of its eight 'spider arms' to implace an upside-down chamber on the sediment surface at preset times. By sampling the seawater inside the chambers over time (up to five programmable times, spaced over sampling periods of minutes to months) one can collect data to calculate the flux of solutes of interest across the sediment-water interface. An important time-and money-saving feature of the TSL to be developed in this study is its ability to operate as an unattended 'free vehicle' that can be programmed, deployed from shipboard, and retrieved weeks or months later.