Dissolved oxygen and O-2 flux across the water-air interface of the Changjiang Estuary in May 2003
文献类型：期刊论文
| 作者 | Gao, Xuelu; Song, Jinming
|
| 刊名 | JOURNAL OF MARINE SYSTEMS
 |
| 出版日期 | 2008 |
| 卷号 | 74期号:40180页码:343-350 |
| ISSN号 | 0924-7963 |
| 关键词 | Pamlico River Estuary Carbon-dioxide European Estuaries Bottom Waters Wind-speed Sea Exchange Co2 Depletion Responses |
| 英文摘要 | The field observation of this study was carried out in the Changjiang Estuary from May 19 to 26,2003, just a few days before the Three Gorges Dam began to store water. A total of 29 stations, including 2 anchor stations, were distributed through almost the whole salinity gradient Based on the data gained from these stations, the biogeochemical characteristics of dissolved oxygen (DO) were examined. Spatial distribution of DO concentrations showed the pattern that it increased in a downriver direction. DO concentration generally varied within a narrow range of 733-8.10 mg l(-1) in the freshwater region and the west part of the mixed water region, and after that it increased rapidly. In vertical direction, the differences in DO concentrations between surface and 2 m above the bottom were big at the stations with water depths exceeding 20 m; DO concentration up to 14.88 mg l(-1) was recorded at the sea surface, while at 2 m above the bottom its concentration was only about 4 mg l(-1). The fluctuation in DO concentrations was small during a period of 48 h in the mixed water region and 2 m above the bottom of the seawater region; while it was large during the same period in the seawater region for surface and 5 m below the surface layer, and a maximum variation from 8.77 to 12.66 mg l(-1) in 4 h was recorded. Oxygen fluxes also showed a marked spatio-temporal variation. As a whole, the freshwater region and mixed water region were an oxygen sink while the seawater region was a source. Relationships between dissolved oxygen and some biogeochemical parameters which could markedly influence its spatio-temporal distribution were discussed in this paper. (C) 2008 Elsevier B.V. All rights reserved. |
| 学科主题 | Geosciences, Multidisciplinary ; Marine & Freshwater Biology ; Oceanography |
| URL标识 | 查看原文 |
| 公开日期 | 2010-12-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/5339]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 推荐引用方式 GB/T 7714 | Gao, Xuelu,Song, Jinming. Dissolved oxygen and O-2 flux across the water-air interface of the Changjiang Estuary in May 2003[J]. JOURNAL OF MARINE SYSTEMS,2008,74(40180):343-350. |
| APA | Gao, Xuelu,&Song, Jinming.(2008).Dissolved oxygen and O-2 flux across the water-air interface of the Changjiang Estuary in May 2003.JOURNAL OF MARINE SYSTEMS,74(40180),343-350. |
| MLA | Gao, Xuelu,et al."Dissolved oxygen and O-2 flux across the water-air interface of the Changjiang Estuary in May 2003".JOURNAL OF MARINE SYSTEMS 74.40180(2008):343-350. |
入库方式： OAI收割
来源：海洋研究所
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