The chemistry, fluxes, and sources of carbon dioxide in the estuarine waters of the Satilla and Altamaha Rivers, Georgia
The chemistry, fluxes, and sources of carbon dioxide in the estuarine waters of the Satilla and Altamaha Rivers, Georgia
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DOI：
10.4319/lo.1998.43.4.0657
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发表时间：
1998-06-01
影响因子：
4.5
通讯作者：
Wang, Y
中科院分区：
文献类型：
--
作者：
Cai, WJ;Wang, Y
报道了美国东南部格鲁吉亚几条河流河口沃茨的pH、碱度和溶解无机碳的含量。虽然它们排放到南大西洋八个狭窄的地区，沿着格鲁吉亚海岸的河流在其流域面积（皮埃蒙特河流与沿海平原河流），化学成分（碳酸盐和腐殖酸含量）和排放率方面存在显着差异。这些河流之间pH值、DIG和Alk的巨大差异清楚地反映了河流物质输入的差异。在混合的早期阶段，pH值急剧增加（在沿海平原河流中更为明显）反映了河流沃茨的低缓冲能力，尽管腐殖物质的含量很高。流入南大西洋8号的DIC通量估计为52.5 × 10 ~（-9）mol·yr ~（-1）。我们认为，目前可用的世界总河流DIC通量的海洋可能有很大的不确定性，如果小河流通量是重要的。根据pH值和DIC测量值计算的pCO（2）值在低盐度地区（1，000至> 6，000 mu atm，盐度250 mol m（-2）yr（-1），盐度
The pH, alkalinity (Alk), and dissolved inorganic carbon (DIC) in estuarine waters of several rivers of Georgia in the southeastern United States are reported. Although they discharge into a narrow area in the South Atlantic Eight, the rivers along the coast of Georgia differ significantly in their drainage area (piedmont rivers vs. coastal plain rivers), chemical composition (contents of carbonate and humics), and discharge rates. Large differences in pH, DIG, and Alk between these rivers clearly reflect the differences of material inputs to the rivers. Dramatic pH increases in the early stage of mixing (more obvious for the coastal plain rivers) reflect the low buffering capacity of the river waters despite the high content of humic substances. Flux of riverine DIC to the South Atlantic Eight is estimated to be 52.5 X 10(9) mol yr(-1). We suggest that the presently available world total riverine DIC flux to the ocean could have much uncertainty if the small river fluxes are important. Calculated pCO(2) values from the pH and DIC measurements are extremely high in low-salinity areas (1,000 to >6,000 mu atm at salinity 250 mol m(-2) yr(-1) at salinity