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

在百慕大东南马尾藻海进行的一项时间序列沉积物捕获计划将持续三年。现有的系列将延续9年。这是迄今为止最长的此类系列，并吸引了许多其他项目。与附近“S”站的水文时间序列一起，它提供了一个可能被全球海洋通量研究（GOFS）利用和扩展的时间变率背景。时间序列测量的价值现在已得到广泛的认识。该系列资料显示了从表层到深海的时间变率的转移及其对深海化学和生物学的影响。继续进行百慕大系列将是评估人为成分向深海输送的十年趋势的有效途径。预计使用顺序收集器陷阱的更高频率（每周一次或两周一次）采样计划将有助于从目前的双月采样模式过渡到预期的GOFS采样模式。除了继续目前对样品的研究外，拟议的研究包括检查浮游有孔虫组成比率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变化趋势；翼足类动物在水柱中碳酸钙循环中的作用；以及测试水文、颗粒通量和CZCS颜色数据之间的关系。//

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.//