Characteristics of vertical exchange process in the Pearl River estuary
文献类型：期刊论文
| 作者 | Xie, Qiang1 ; Xu, Hongzhou1; Li, Haobo3; Hong, Bo3; Gong, Wenping2; Peng, Shiqiu4; Wang, Dongxiao4
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| 刊名 | AQUATIC ECOSYSTEM HEALTH & MANAGEMENT
 |
| 出版日期 | 2016 |
| 卷号 | 19期号:3页码:286-295 |
| 关键词 | Transport Timescale Estuary Circulation Stratification |
| DOI | 10.1080/14634988.2016.1205438 |
| 文献子类 | Article |
| 英文摘要 | Being an estuary with the occasional appearance of hypoxia, the Pearl River estuary was selected to investigate its vertical exchange process by a validated 3-D numerical model. The concept of vertical exchange time was used to quantify the vertical exchange process and was calculated by adding a conservative tracer to the hydrodynamic model. The results revealed vertical exchange time has significant seasonal variation modulated by seasonally changed external forcing, and has similar structure with spatial variation in salinity. During the wet season, remarkably long vertical exchange times (>50 days) occurred at the lower estuary under 10 m depth, which was coincident with the frequently reported hypoxic zone. The entire Pearl River estuary was occupied by water mass with a vertical exchange time of <5 days during the dry season, which indicated the estuary's health condition during this period. Further analyses revealed the seasonal trend of vertical exchange time was closely related with salinity stratification and river runoff in which the lowest vertical exchange times can be estimated by linear regressions in certain stages. Tide modulated these exchange times in different time scales. Spring tide better mixed the water column and thus facilitated the vertical exchange process compared with neap tide. As a result, minimum vertical exchange time during spring tide was about 10 days shorter than that during neap tide. Flood-ebb tide also modulated vertical exchange time in the Pearl River estuary. Vertical exchange time varies with the tide and reached minimum and maximum values during valley and high tides, respectively. |
| WOS关键词 | ADJACENT COASTAL WATERS ; DISSOLVED-OXYGEN ; CHESAPEAKE BAY ; SHALLOW ESTUARY ; HYPOXIA ; MODEL ; AGE ; VARIABILITY ; CHINA ; STRATIFICATION |
| 语种 | 英语 |
| WOS记录号 | WOS:000383372800008 |
| 源URL | [http://ir.idsse.ac.cn/handle/183446/1648]  |
| 专题 | 深海科学研究部_海洋环流观测与数值模拟研究室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China 2.Sun Yat Sen Univ, Sch Marine Sci, Ctr Coastal Ocean Sci & Technol Res, Guangzhou 510275, Guangdong, Peoples R China 3.South China Univ Technol, Sch Civil & Transportat Engn, Guangzhou 510641, Guangdong, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Qiang,Xu, Hongzhou,Li, Haobo,et al. Characteristics of vertical exchange process in the Pearl River estuary[J]. AQUATIC ECOSYSTEM HEALTH & MANAGEMENT,2016,19(3):286-295. |
| APA | Xie, Qiang.,Xu, Hongzhou.,Li, Haobo.,Hong, Bo.,Gong, Wenping.,...&Wang, Dongxiao.(2016).Characteristics of vertical exchange process in the Pearl River estuary.AQUATIC ECOSYSTEM HEALTH & MANAGEMENT,19(3),286-295. |
| MLA | Xie, Qiang,et al."Characteristics of vertical exchange process in the Pearl River estuary".AQUATIC ECOSYSTEM HEALTH & MANAGEMENT 19.3(2016):286-295. |
入库方式： OAI收割
来源：深海科学与工程研究所
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