CD, ZN, NI AND CU IN THE INDIAN-OCEAN
CD, ZN, NI AND CU IN THE INDIAN-OCEAN
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DOI：
10.1016/0198-0149(92)90017-n
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发表时间：
1992-01-01
期刊：
影响因子：
--
通讯作者：
HOWLAND, RJ
中科院分区：
文献类型：
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作者：
SAAGER, PM;DEBAAR, HJW;HOWLAND, RJ
溶解镉，锌，镍和铜在西北印度洋（阿拉伯海）的垂直剖面表现出营养型分布也观察到在其他海洋。 该区域的特点是强烈的季节性上升流和中间沃茨的广泛的氧气最低区。 然而，无论是镉，锌，镍，铜似乎受到影响的还原条件下，与早期报道的观测锰，铁和稀土元素。低Cd/PO 4的斜率在表面沃茨约0.15纳米/μ-M是在良好的协议与典型的表面沃茨在其他海洋的斜率。 然而，深水斜率从0.5 nM/mu-M增加到0.85 nM/mu-M。 这些斜率比公布的北大西洋和北太平洋深海高得多，但与最近公布的南极海洋高Cd/PO 4斜率相当。 从大西洋、南极、印度洋到太平洋，深水镉-磷酸盐比值随着年龄的增加而增加。 Zn/Si的斜率（0.062 nM/μ-M）与太平洋中发现的大致相同，深水比率高出约30%。 斜率Ni/Si（0.054 nM/μ-M）与印度洋的先前报告一致。 铜剖面显示了地表水输入、中层和深层沃茨再生和底栖通量的证据，并进一步受到强烈清除的影响，特别是在地表沃茨。
Vertical profiles of dissolved Cd, Zn, Ni and Cu in the Northwest Indian Ocean (Arabian Sea) exhibit a nutrient type distribution also observed in other oceans. The area is characterized by strong seasonal upwelling and a broad oxygen minimum zone in intermediate waters. However, neither Cd, Zn, Ni nor Cu appear to be affected by the reducing conditions, in contrast with earlier reported observations of Mn, Fe and rare earth elements.Low Cd/PO4 slopes in surface waters of about 0.15 nM/mu-M are in good agreement with slopes typical of surface waters in other oceans. Deep water slopes, however, increase from 0.5 nM/mu-M to 0.85 nM/mu-M going inshore. These slopes are much higher than published for the deep North Atlantic and North Pacific Oceans, yet comparable to the high Cd/PO4 slope recently published for the Antarctic Ocean. Deep water cadmium-phosphate ratios increase with the age of the deep water from the Atlantic through the Antarctic and Indian to the Pacific Ocean. Slopes of Zn/Si (0.062 nM/mu-M) are about the same as found in the Pacific Ocean, deep water ratios are about 30% higher. The slopes Ni/Si (0.054 nM/mu-M) are in good agreement with previous reports from the Indian Ocean. The Cu profile shows evidence of surface water inputs, regeneration in intermediate and deep waters and benthic fluxes, and is further influenced by intensive scavenging, notably in surface waters.