A Neutrally Buoyant, Upper Ocean Sediment Trap
A Neutrally Buoyant, Upper Ocean Sediment Trap
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中性浮力的上层海洋沉积物陷阱
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
J. Price
中科院分区：
文献类型：
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作者：
J. Valdes;J. Price
摘要作者设计并部署了一种用于上层海洋的中性浮力沉积物捕集器（NBST）。其目的是通过制作一个随环境水流自由漂移的沉积物捕集器来尽量减少流体动力学流动的干扰。主要的设计问题是使NBST下降到并保持在规定的深度附近。由于各种原因，最成功的是通过微处理器控制的音量变换器自动压载的NBST。自动压载NBST已经证明了将规定深度保持在10 m以内的能力。在百慕大大西洋时报系列站点，成功地同时部署了两个NBST和常规的表面系留沉积物捕集器。在这两个时期内，观测到的通过STST的流量都很低，约为0.05 m s-1，因此对STST的水动力影响将被最小化。陷阱结果的比较（在Buesseler等人的配套论文中描述）表明收集的总质量
Abstract The authors have designed and deployed a neutrally buoyant sediment trap (NBST) intended for use in the upper ocean. The aim was to minimize hydrodynamic flow interference by making a sediment trap that drifted freely with the ambient current. The principal design problem was to make the NBST descend to and stay near a prescribed depth. For a variety of reasons, the most success has been with NBSTs that were autoballasted by means of a microprocessor-controlled volume changer. Autoballasting NBSTs has demonstrated an ability to hold a prescribed depth to within 10 m. There have been two successful, concurrent deployments of NBSTs and conventional surface-tethered sediment traps (STSTs) at the Bermuda Atlantic Times Series site. During both periods the observed flow past the STSTs was low, about 0.05 m s−1, so that hydrodynamic effects on the STSTs would have been minimized. Comparisons of the trap results (described in a companion paper by Buesseler et al.) indicate that the total mass of collect...