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

时间序列测量对于理解自然过程、评估人类活动对环境的影响以及被称为“全球变化”的整个复杂问题的价值日益得到重视。该提案要求提供资金，继续在马尾藻海500米、1500米和3200米深度进行时间序列沉积物捕集，为期三年。此时，3200米系列的时间跨度为12年半。这是迄今为止存在的最长的时间序列，其采样点已被指定为北大西洋的JGOFS时间序列站点。它与附近“S”站的水文时间序列和联合全球海洋观测系统的测量数量不断增加一起，提供了一个无与伦比的关于公海物理、化学和生物变量的数据库。该系列展示了深海中存在的时间变异性，揭示了从表层海洋中清除物质的过程的效率，以及这些过程对深海化学和生物的影响。百慕大系列的继续将是确定碳通量对深海的强迫作用、评估“生物泵”功效的十年尺度趋势和监测原生成分向深海的运输的有效途径。

The value of time-series measurements for the understanding of natural processes, the assessment of anthropogenic effects on the environment, and the entire complex of issues referred to as "Global Change" is increasingly appreciated. This proposal requests funds to continue time-series sediment trapping at depths of 500, 1500, and 3200 m in the sargasso Sea for three years. At this time, the 3200 m series extends over twelve and a half years. It is by far the longest such series in existence, and its sampling site has been designated the JGOFS time-series site in the North Atlantic. Together with the hydrographic time series at nearby Station "S" and with the growing number of JGOFS measurements, it provides an unequaled data base on physical, chemical and biological variables in the open ocean. The series has demonstrated the existence of temporal variability in the deep ocean, revealed the efficiency of processes removing materials from the surface ocean, and the effects of those processes on the chemistry and biology of the deep ocean. Continuation of the Bermuda series will be an efficient route towards identifying the forcing functions of carbon flux to the deep ocean, assessing decade-scale trends in the efficacy of the "biological pump," and monitoring transport of antropogenic components to the deep ocean.//