Distribution of Large and Small Particles in JGOFS Equatorial Pacific (EQPAC): Role in Carbon Cycling
Distribution of Large and Small Particles in JGOFS Equatorial Pacific (EQPAC): Role in Carbon Cycling
批准号:
9024371
负责人:
Vernon Asper
金额:
$18.39万
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
项目状态:
已结题
起止时间:
1991-06-01 至 1993-11-30
中文摘要
在本项目中,将在美国赤道中太平洋联合全球海洋通量研究(EQPAC)中测量大小颗粒的分布,以解决EQPAC正在解决的五个问题中的两个,即:物理强迫与上层海洋生物地球化学循环之间的关系是什么?问题四:哪些过程负责颗粒和溶解性营养物质的运输和再生?这项工作旨在通过使用透射仪绘制小颗粒的高分辨率剖面,以及使用大聚集体剖面系统(LAPS)绘制聚集体的高分辨率剖面,来填补这一知识空白。为了解决上述问题,提出了在两个样带巡航和EQPAC中的两个时间序列中进行LAPS分析。LAPS还具有透射仪和CTD,可同时获得光束衰减(与小颗粒浓度成正比)、温度和盐度剖面,以比较颗粒分布与水结构。
英文摘要
In this project the distribution of large and small particles will be measured in the U.S. Joint Global Ocean Flux Studies in the Central Equatorial Pacific (EQPAC) to address two of the five problems being addressed in EQPAC, namely: Problem I: What is the relationship between physical forcing and upper ocean biogeochemical cycles? Problem IV: Which processes are responsible for the transport and regeneration of particulate and dissolved nutrients? The work is designed to fill that gap in knowledge by making high resolution profiles of small particles using transmissometers and of aggregates using Large Aggregate Profiling Systems (LAPS). LAPS profiling is proposed during the two transect cruises and the two times-series in EQPAC to contribute to the solution of the above problems. LAPS also has a transmissometer and CTD to obtain simultaneous profiles of beam attenuation (proportional to small particle concentration), temperature and salinity to compare particle distributions with water structure.
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