Trace Element Input and Cycling in the Western South Atlantic

9531847测量西大西洋是研究多种输入、生物地球化学过程和环流对痕量元素浓度影响的好地方。这项研究将研究西大西洋Al、Be、Fe、As、Se、Sb和其他微量元素的输入、循环和运输之间的相互作用。邮轮航道提供了从大西洋几乎所有主要的中深层水团中采集样本的机会，以及跨越南大西洋西部边界流、赤道大西洋/ITCZ(接收大量撒哈拉沙尘)和亚马逊羽流(供应陆地有机配体、悬浮沉积物和胶体物质)的详细表层横断面。这条航道还将满足第二个研究目标，即协调和执行第三次政府间海洋学委员会对西南大西洋和赤道大西洋痕量金属和有机污染物的基线考察。根据国际奥委会的设想，这些考察的既定目标是为世界海洋的主要水团确定尽可能多的污染物的特征，以便能够确定人类活动造成的变化。

9531847 Measures The western Atlantic is a good location for examining the effects of multiple inputs, biogeochemical processes, and circulation on the concentrations of trace elements. This study will examine the interaction between inputs, cycling, and transport for Al, Be, Fe, As, Se, Sb, and other trace elements in the western Atlantic. The cruise track provides opportunities to collect samples from nearly all of the major intermediate and deep water masses in the Atlantic, as well as a detailed surface transect across the western boundary currents in the south Atlantic, the equatorial Atlantic/ITCZ (which receives large amounts of Saharan dust), and the Amazon plume, (supplying terrestrial organic ligands, suspended sediments, and colloidal matter). This cruise track will also meet the second research objective, to coordinate and execute the third Intergovernmental Oceanographic Commission Baseline Expedition for Trace Metals and Organic Contaminants in the western South and equatorial Atlantic. The stated goal of these expeditions, as envisioned by the IOC, is to characterize the major water masses of the world's oceans for as many contaminants as possible so that changes due to anthropogenic activity can be identified.