Trace Element Input and Cycling in the Western South Atlantic

小行星9531848 西大西洋是研究多重输入、生物地球化学过程和环流对微量元素浓度影响的良好地点。本研究将探讨输入，循环和运输的Al，Be，Fe，As，Se，Sb和其他微量元素在西大西洋之间的相互作用。 巡航跟踪提供了从大西洋几乎所有主要的中层和深层水团收集样本的机会，以及横跨南大西洋西部边界流、赤道大西洋/ITCZ（接收大量撒哈拉尘埃）和亚马逊羽流（提供陆地有机配体、悬浮沉积物和胶体物质）的详细表面断面。这条巡航路线还将实现第二个研究目标，即协调和执行政府间海洋学委员会第三次南西大西洋和赤道大西洋痕量金属和有机污染物基线考察。按照海委会的设想，这些考察的既定目标是尽可能多地确定世界各大洋主要水团的污染物特征，以便查明人类活动造成的变化。

9531848 Landing 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.