MULVFS Investigations of Particle Dynamics in the EquatorialPacific Ocean: JGOFS

赤道太平洋粒子动力学的 MULVFS 研究：JGOFS

• 批准号: 9022308
• 负责人: James Bishop
• 金额: $ 51.33万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-08-01 至 1995-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9022308&HistoricalAwards=false
• 关键词: MULVFS; Investigations; Particle; Dynamics; EquatorialPacific

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.

多单元大体积原位过滤系统(MULVFS)将被用来研究2000m以上的颗粒动力学和化学。MULVFS采样提供了关于水柱中大颗粒的丰度、化学和形态的迫切需要的信息。此外，它还提供了一套关于小颗粒种群的综合信息。这种方法已经在理解上层水柱中的颗粒行为和通量方面取得了重大进展。在1992年春秋两季，将在北纬12度至南纬12度、功率140 W的空间横断面上进行16次MULVFS部署。640个样品分为53、1-53和1微米粒度组分，将使用既定的方法分析主要和次要生物成因元素(C(有机)、C(无机)、N、P、S、镁、K、钙、硅、锶)的全套以及Na、A1、Fe、Mn、Cu、BA和Pb。显微镜分析包括测定粪便颗粒和无定形聚集体的大小分布和形态。从漂流的“反游泳者”陷阱中分离出来的颗粒物将进行许多同样的分析。