Acid Volatile Sulfides in Sediments of South Yellow Sea
In coastal marine environment, acid volatile sulfide (AVS) is usually one of the most important or reactive phases. We report first set of data on AVS contents in sediments of south Yellow Sea. The AVS contents are less than 11.14 μmol/g (dry sediment weight), with most below 3 μmol/g in the sediment of south Yellow Sea. The average AVS contents of surface sediments (0~10 cm) range from 0.02 μmol/g to 2.30 μmol/g, with an average value of 0.94 μmol/g. There are three zones with high AVS content in sediments and they are dominated by the Yellow River sediments and the old Yellow River transported by coastal current and the Yellow Sea Cold Water Mass, respectively. The AVS content in sediments of these three zones increases initially with burial depth, reaching a maximum at about 13 cm (6cm for east section), then decreases. One core from the south section, however, shows an exceptionally high AVS content at the surface (4.96 μmol/g) and a minimum at around 7 cm burial depth. This AVS abnormal profile is located at the place where enrichment of methane at shallow layer reported. Except those three high value areas, the AVS content of sediment is very low and does not show significant variations. It is apparent that sediment AVS content is closely related to the organic matter in different sediment environment, since the content of Fe is quite high (average 3.13％) in the sediment of Yellow Sea.
South Yellow Sea Acid Volatile Sulfide Yellow Sea Cold Water Mass Yellow River Coastal Current
Xiaoqiang Pu Fangcheng Li Xiaoqiang Pu Shaojun Zhong Gang Liu
Guangdong Ocean University GOU Zhanjiang, China CAS Key Laboratory of Marginal Sea Geology KLMSG Guangzhou, China Qingdao Institute of Marine Geology QIMG Qingdao, China CAS Institute of Oceanology IOCAS Qingdao, China
国际会议
上海
英文
1058-1061
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）