Iranian National Institute for Oceanography and Atmospheric Science, No. 3, Etemadzadeh St., Fatemi Ave., Tehran 1411813389, Iran.
Iranian National Institute for Oceanography and Atmospheric Science, No. 3, Etemadzadeh St., Fatemi Ave., Tehran 1411813389, Iran.
Mar Pollut Bull. 2018 Feb;127:406-411. doi: 10.1016/j.marpolbul.2017.12.013. Epub 2017 Dec 21.
In this work, the results of hydrochemical studies aboard the R/V Iran Behshahr in southern Caspian Sea in late-winter 2014 were presented. Salinity, temperature, dissolved oxygen, pH, total dissolved inorganic carbon, total alkalinity, nitrate, phosphate and silicate concentrations in water column of Neka-Amir Kabir oil platform section in the southern Caspian Sea were measured to study the status of hydrochemistry of this area. Results showed that the hypoxia continues to intensify in the deep-water basin of the South Caspian Sea. Near-zero concentration of dissolved oxygen and accumulation of phosphate, silicate and total dissolved inorganic carbon in near-bottom layers in the study area showed that vertical winter mixing of water column did not reach the near-bottom layers at the time of this survey. Nitrate showed its maximum concentration at the intermediate maximum depth of 300m.
本工作介绍了 2014 年末伊朗“Behshahr”号在里海南部考察时的水化学研究结果。在里海南部 Nekaa mir Kabir 石油平台附近测量了盐度、温度、溶解氧、pH 值、总溶解无机碳、总碱度、硝酸盐、磷酸盐和硅酸盐在水柱中的浓度，以研究该地区的水化学状况。结果表明，里海深海盆地的缺氧现象仍在加剧。研究区域近底层的溶解氧近于零，磷酸盐、硅酸盐和总溶解无机碳的积累表明，冬季水团的垂直混合在调查时并未到达近底层。硝酸盐在 300 米的中间最大深度处达到最大浓度。
