Continuation of Time-Series Particle Flux Measurements in the Sargasso Sea

马尾藻海中时间序列粒子通量测量的延续

• 批准号: 8716589
• 负责人: Werner Deuser
• 金额: $ 69.75万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-03-01 至 1991-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8716589&HistoricalAwards=false
• 关键词: Continuation; Time; Series; Particle; Flux

A time-series sediment trapping program in the Sargasso Sea southeast of Bermuda will be continued for three years. The existing series extends over nine years. It is by far the longest such series and has attracted a number of other projects to the site. Together with the hydrographic time series at nearby Station "S", it provides a background of temporal variability which is likely to be utilized and extended by the Global Ocean Flux Study (GOFS). The value of time-series measurements is now widely appreciated. The series have demonstrated the transfer of temporal variability from the surface to the deep ocean and its effects on deep-sea chemistry and biology. Continuation of the Bermuda series will be an efficient route towards assessing decade-scale trends in the transport of anthropogenic components to the deep ocean. It is anticipated that the transition from the present bimonthly sampling mode to the expected GOFS sampling mode be facilitated by changing to a higher-frequency (weekly or biweekly) sampling schedule using sequential-collector traps. Besides continuing present studies on the samples, proposed studies include examination of simultaneous time-depth changes in constituent ratios and in ontogenetic stages of planktonic foraminifera; trends in the deep fluxes of lead and PCB's since 1978; the role of pteropods in calcium carbonate cycling in the water column; and testing for relationships among hydrography, particle fluxes and CZCS color data.//

百慕大东南部马尾藻海的一项时间序列沉积物捕获方案将持续三年。现有的系列超过九年。这是迄今为止时间最长的此类系列活动，并吸引了许多其他项目来到该网站。与附近“S”站的水文时间序列一起，它提供了一个时间变异性的背景，有可能被全球海洋通量研究利用和推广。时间序列测量的价值现在得到了广泛的认可。该系列展示了时间变异性从表层向深海的转移及其对深海化学和生物学的影响。百慕大系列报告的继续将是评估人类活动组成部分向深海运输的十年规模趋势的有效途径。预计从目前的双月抽样模式过渡到预期的GOFS抽样模式，可以通过使用顺序收集陷阱改为更高频率(每周或每两周)的抽样时间表来促进。除了继续目前对样本的研究外，拟议的研究还包括检查浮游有孔虫组成比和个体发育阶段的同时时间深度变化；1978年以来铅和多氯联苯深层通量的趋势；翼足类在水柱中碳酸钙循环中的作用；并测试水文、颗粒通量和CZCS颜色数据之间的关系。//