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首页> 外文期刊>Journal of oceanography >Factors controlling dissolved silica in coral reef surface water of Urasoko Bay, Ishigaki Island, Japan
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Factors controlling dissolved silica in coral reef surface water of Urasoko Bay, Ishigaki Island, Japan

机译：日本石垣岛浦子湾珊瑚礁地表水中溶解二氧化硅的控制因素

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摘要

From August 2006 to August 2007, the concentrations of dissolved silica (Si(OH)4) were monitored in the surface water of Urasoko Bay and the mouth of the stream that runs into the bay. Urasoko Bay is located on the northern coast of Ishigaki Island, Okinawa, Japan, which is in a subtropical area of the North Pacific Ocean and is surrounded by a relatively poorly developed fringing reef. Added to these samples were freshwater from the upstream area and brackish water that exudes at the beach site, which were collected from April to June 2007. Rainwater samples were also collected during the study period. The concentration of Si(OH)4 generally decreased from upstream to the bay site, and, on clear days, Si(OH)4 data from all study sites (the bay, beach, stream mouth, and upstream) plotted against salinity fell on a single straight line. When the influence of rainwater was, the results were scattered below the straight line, which suggests dilution by rainwater with a much lower Si(OH)4 concentration. These findings show that offshore seawater, rainwater, and upstream freshwater regulate the concentration of Si(OH)4 in the surface water of Urasoko Bay.
机译：从2006年8月到2007年8月，在浦添湾的地表水和流入该湾的溪流口中监测了溶解的二氧化硅（Si（OH）4）的浓度。浦子湾位于日本冲绳岛石垣岛的北海岸，它位于北太平洋的亚热带地区，周围是一个相对欠发达的边缘礁。从这些样本中还添加了上游地区的淡水和海滩现场散发出的微咸水，这些咸水于2007年4月至6月收集。在研究期间还收集了雨水样本。从上游到海湾地区，Si（OH）4的浓度通常会下降，并且在晴朗的日子里，针对盐度绘制的所有研究地点（海湾，海滩，溪流口和上游）的Si（OH）4数据都会下降一条直线。当受到雨水的影响时，结果分散在直线下方，这表明被Si（OH）4浓度低得多的雨水稀释了。这些发现表明，近海海水，雨水和上游淡水调节了浦添湾表层水中Si（OH）4的浓度。

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