摘要
基于采用不规则三角网格和有限体积方法的FVCOM模式,建立半封闭海湾-湛江湾附近海域的三维潮汐潮流数值模型,通过验证,结果与观测数据符合良好,并在此模型基础上对湛江湾的水交换状况进行了数值模拟,将湛江湾划分成3个区域,针对各区域进行了水交换能力研究,研究结果表明:由于湛江湾内不同区域的地形和地理位置变化较大,使得湛江湾内不同区域交换能力相差较大,其中,靠近湛江湾出口处交换能力最强,特呈岛以北海域交换能力最弱,交换时间与物质的初始浓度无关,与投放时刻和外源强迫密切相关,在治理湛江湾环境时,应分区进行,注意选择污染物排放时间和位置。
Based on an unstructured grid,finite-volume coastal ocean model（FVCOM）,a 3-dimensional numericaI simulation model of tide and tidal current in the semi-closed Zhanjiang Bay was built.By verification,the results of the model agreed well with the field observed data.And the water exchange status of the Zhanjiang Bay was numerical simulated based on the well validated model.The Zhanjiang Bay was divided into three areas,and water exchange ability of each area was studied.The results showed that,there were great differences in water change abilities of different areas because of large topography differences of different areas in the Zhanjiang bay,of which,the highest water exchange ability appeared in the area closed with the outlet,and the area north of Techeng Island had the lowest ability.Exchange time was independent from the initial concentration,but highly dependent on the initial time and extraneous sources forcing.During environmental management,the time and place for discharging the waste should be considered for different areas.
出处
《海洋通报》
CAS
CSCD
北大核心
2012年第3期248-254,共7页
Marine Science Bulletin
关键词
湛江湾
水交换
数值模拟
the Zhanjiang Bay
water exchange
numerical simulation
