Sediment transport modelling: effect of the coastal reservoirs development plan in the Cisadane estuary-Indonesia

IF 2.8 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Environmental Earth Sciences Pub Date : 2024-09-24 DOI:10.1007/s12665-024-11864-z

Mardi Wibowo, Hanah Khoirunnisa, Reni Wijayanti, Dinar Catur Istiyanto, Aloysius Bagyo Widagdo

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Abstract

National Capital Integrated Coastal Development (NCICD) aims to protect Jakarta from flooding. This project includes a coastal reservoir (CR) development plan at the Cisadane Estuary, Tangerang Regency, Indonesia. CR planning must consider the sedimentation process. With numerical modelling of sediment transport, the sedimentation pattern of bed load and suspended load sediments will be known. This study used the MIKE21/3 Integrated Models software that is coupled with Flow Model (FM) and Mud Transport (MT) for one year (August 1, 2020 - July 31, 2021). The validation result of surface elevation shows that the modelling results are valid with NRMSD 93.35%. Based on the simulation results, suspended sediment concentration in the west monsoon is higher than in the east. The sediment concentration around the coastal reservoir at the bottom layer of the water is slightly higher than the surface layer. There is an increase in the maximum bed thickness of 1.2 m in the northeast corner of CR. There is a reduction in the bottom thickness of about 0.5 m on the west side of the CR embankment. The results of this study can be used to develop the most optimal CR design to minimise the environmental impacts.

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沉积物迁移模型：印度尼西亚西萨达纳河口沿海水库开发计划的影响

国家首都综合海岸开发项目（NCICD）旨在保护雅加达免受洪水侵袭。该项目包括印度尼西亚 Tangerang 地区 Cisadane 河口的沿海水库 (CR) 开发计划。沿海水库规划必须考虑沉积过程。通过沉积物输运数值模拟，可以了解床面负荷和悬浮负荷沉积物的沉积模式。本研究使用了 MIKE21/3 集成模型软件，该软件与水流模型 (FM) 和泥沙输运 (MT) 相结合，使用期限为一年（2020 年 8 月 1 日至 2021 年 7 月 31 日）。地表高程验证结果表明，模拟结果有效，NRMSD 为 93.35%。根据模拟结果，西季风区的悬浮泥沙浓度高于东季风区。沿岸水库周围水体底层的泥沙浓度略高于表层。中润东北角的最大底床厚度增加了 1.2 米。华润公司堤坝西侧的底层厚度减少了约 0.5 米。这项研究的结果可用于制定最理想的中环填海工程设计，以尽量减少对环境的影响。

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来源期刊

Environmental Earth Sciences 环境科学-地球科学综合

CiteScore

5.10

自引率

3.60%

发文量

494

审稿时长

8.3 months

期刊介绍： Environmental Earth Sciences is an international multidisciplinary journal concerned with all aspects of interaction between humans, natural resources, ecosystems, special climates or unique geographic zones, and the earth: Water and soil contamination caused by waste management and disposal practices Environmental problems associated with transportation by land, air, or water Geological processes that may impact biosystems or humans Man-made or naturally occurring geological or hydrological hazards Environmental problems associated with the recovery of materials from the earth Environmental problems caused by extraction of minerals, coal, and ores, as well as oil and gas, water and alternative energy sources Environmental impacts of exploration and recultivation – Environmental impacts of hazardous materials Management of environmental data and information in data banks and information systems Dissemination of knowledge on techniques, methods, approaches and experiences to improve and remediate the environment In pursuit of these topics, the geoscientific disciplines are invited to contribute their knowledge and experience. Major disciplines include: hydrogeology, hydrochemistry, geochemistry, geophysics, engineering geology, remediation science, natural resources management, environmental climatology and biota, environmental geography, soil science and geomicrobiology.