MULVFS Investigations of Particle Dynamics in the EquatorialPacific Ocean: JGOFS

多单元大体积原位过滤系统（MULVFS）将用于研究2000 m以上的颗粒动力学和化学。MULVFS采样提供了关于水柱中存在的大颗粒的丰度、化学和形态的急需信息。此外，它还提供了一套关于小颗粒种群的全面信息。这种方法已经在理解上层水柱的颗粒行为和通量方面取得了重大进展。1992年春季和秋季将在北纬12度至南纬12度、西经140度的空间横断面巡航中部署16个多视距系统。将使用既定的方法分析640个样品，每个样品分为53,1 -53和1 μ m粒度的组分，以分析完整的主要和次要生物元素（C（有机），C（无机），N，P，S, Mg， K, Ca, Si, Sr）以及Na， A1, Fe, Mn, Cu， Ba和Pb。显微分析包括确定粪便颗粒和无定形团粒的大小分布和形态。从漂浮的“反游泳者”陷阱中分离出来的颗粒物质将受到许多相同的分析。

The Multiple Unit Large Volume in situ Filtration System (MULVFS) will be used to study the particle dynamics and chemistry within the upper 2000 m. MULVFS sampling provides critically needed information on the abundances, chemistry and morphology of the large particles present in the water column. It provides, in addition, a comprehensive suite of information on populations of small particles. This approach has already resulted in major advances in the understanding of particle behavior and fluxes in the upper water column. Sixteen MULVFS deployments will be made on spatial transect cruises from 12N to 12S at 140 W during the spring and fall of 1992. The 640 samples each divided into 53, 1-53, and 1 um particle size fractions will be analyzed for the complete suite of major and minor biogenic elements (C(organic), C(inorganic), N,P,S, Mg, K, Ca, Si, Sr) as well as for Na, A1, Fe, Mn, Cu, Ba and Pb using established methodology. Microscopic analyses include determination of fecal pellet and amorphous aggregate size distributions and morphology. Splits of particulate matter from drifting 'anti-swimmer' traps will be subjected to many of the same analyses.