厦门大学学报（自然科学版）2011，Vol.50Issue(6)：1042-1046,5.
珠江口夏季底层缺氧现象的数值模拟
Numerical Simulation on Hypoxia Phenomenon at the Bottom of Pearl River Estuary During Summertime
张璇 1江毓武1
作者信息
- 1. 近海海洋环境科学国家重点实验室(厦门大学),福建厦门361005
- 折叠
摘要
Abstract
Hypoxia phenomenon at the bottom of waters has aroused wide attention since early times. It can severely affect the ecosystem balance of the water,resulting in the declination of water quality by easily leading to the death of aquatic life. Therefore,finding out the reasons of water hypoxia has important significance. In this study,a three-dimensional ecological model was used to study the hypoxia phenomenon in the Pearl River Estuary during summer. Its hydrodynamic model was based on ROMS (regional ocean modeling system) and ecological model was based on the FENNEL ecological module. The results show that the dominating reasons leading to this phenomenon are the salt-front and the oxygen-consumption materials at the bottom of the water. The former restrains the exchange of oxygen that being rich in the surface water and poor in the bottom water in the Pearl River Estuary. However,strong tidal processes can weaken and ruin the hypoxia formation by enhancing the vertical mixing. Hypoxia has a close relationship with oxygen-consumption organic materials from the rivers. Being shown from the simulation result,as one of the main nutrients that engages in the circulation of the ecosystem,phosphate doesn't have obvious impact on bottom oxygen concentration.关键词
珠江口/生态模型/溶解氧Key words
Pearl River Estuary/ecological model/ dissolved oxygen分类
海洋科学引用本文复制引用
张璇,江毓武..珠江口夏季底层缺氧现象的数值模拟[J].厦门大学学报（自然科学版）,2011,50(6):1042-1046,5.
