印度尼西亚雅加达湾河流流量、营养物质通量和营养物质扩散的数值模拟。
Numerical simulations of river discharges, nutrient flux and nutrient dispersal in Jakarta Bay, Indonesia.
作者信息
van der Wulp Simon A, Damar Ario, Ladwig Norbert, Hesse Karl-J
机构信息
Forschungs- und Technologiezentrum Westküste, Christian-Albrechts-Universität zu Kiel, Hafentörn 1, D-25761 Büsum, Germany.
Centre for Coastal and Marine Resources Studies, Bogor Agricultural University, Indonesia; Department of Living Aquatic Resources Management, Fac. of Fisheries and Marine Sciences, Bogor Agricultural University, Indonesia.
出版信息
Mar Pollut Bull. 2016 Sep 30;110(2):675-85. doi: 10.1016/j.marpolbul.2016.05.015. Epub 2016 Jun 7.
The present application of numerical modelling techniques provides an overview of river discharges, nutrient flux and nutrient dispersal in Jakarta Bay. A hydrological model simulated river discharges with a total of 90 to 377m(3)s(-1) entering Jakarta Bay. Daily total nitrogen and total phosphorus loads ranged from 40 to 174tons and 14 to 60tons, respectively. Flow model results indicate that nutrient gradients are subject to turbulent mixing by tides and advective transport through circulation driven by wind, barotropic and baroclinic pressure gradients. The bulk of nutrient loads originate from the Citarum and Cisadane rivers flowing through predominantly rural areas. Despite lower nutrient loads, river discharges from the urban area of Jakarta exhibit the highest impact of nutrient concentrations in the near shore area of Jakarta Bay and show that nutrient concentrations were not only regulated by nutrient loads but were strongly regulated by initial river concentrations and local flow characteristics.
数值模拟技术的当前应用概述了雅加达湾的河流流量、营养物质通量和营养物质扩散情况。一个水文模型模拟了进入雅加达湾的河流流量，总量为90至377立方米每秒。每日总氮和总磷负荷分别在40至174吨和14至60吨之间。水流模型结果表明，营养物质梯度受到潮汐的湍流混合以及由风、正压和斜压压力梯度驱动的环流的平流输送的影响。大部分营养物质负荷来自流经主要农村地区的芝塔龙河和芝萨丹河。尽管营养物质负荷较低，但雅加达市区的河流排放对雅加达湾近岸地区的营养物质浓度影响最大，表明营养物质浓度不仅受营养物质负荷的调节，还受到初始河流浓度和当地水流特征的强烈调节。
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