Abstract:The cross-section data of sea water pH, sea water temperature and rainfall in August in Dalian station of the Bohai Sea were collected over the years from 1978 to 2010. Results showed interannual variability in ocean pH of Bohai Sea in summer was in range of 7.86~8.30. It was suitable for the growth of aquatic organisms. According to results of EOF and maximum entropy spectral analysis, ocean pH interannual temporal-spatial variability of Bohai Sea in summer was in two major modes. The first mode was a cross-section of north-south sea area spatial components with phase change, and temporal component period was 5.3a.The spatial component of the second mode was anti-phase cross-section of north-south sea area change, with temporal component period 3.2~10.7a. It was the main factor that the five years sea water temperature changes around the Bohai Sea in summer affected the interannual cycle of summer interannual variability of sea water pH. It was the secondary factors that precipitation in August (acid rain) and the average monthly flow of the Yellow River impacted inerannual variability of sea water pH in summer.The cross-section of interannual variability in ocean pH in the Bohai Sea in summer was not the disciplinary cycle, other factors could also affect the summer interannual variation in ocean pH.
石强, 杨东方. 渤海夏季海水pH值年际时空变化[J]. 中国环境科学, 2011, 31(增刊): 58-68.
SHI Qiang, YANG Dong-Fang. The interannual temporal-spatial variability of sea water pH in summer, Bohai Sea. CHINA ENVIRONMENTAL SCIENCECE, 2011, 31(增刊): 58-68.