scholarly journals TUTORIAL PENGGUNAAN SOFTWARE SMS 11.1 MODUL RMA2 UNTUK MENGANALISA POLA PERGERAKAN ARUS DI PELABUHAN BELAWAN

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Rizky Franchitika
Keyword(s):  
Surface Water ◽  
Flow Velocity ◽  
Flow Pattern ◽  
Neap Tide ◽  
Spring Tide ◽  
Dry Season ◽  
Wind Pressure ◽  
Wet Season ◽  
Water Modeling ◽  
Surface Water Modeling

ABSTRAKPelabuhan Belawan merupakan pelabuhan terbesar di Sumatera dan ketiga terbesar di Indonesia setelah Tanjung Priok dan Tanjung Perak. Pelabuhan Belawan berada didaratan semenanjung diantara Sungai Belawan dan Sungai Deli. Modelisasi pada pola arus di Pelabuhan Belawan akan menemui masalah yang sangat kompleks, karena geometri daerah pantai yang tidak beraturan adalah bagian sungai yang berhubungan langsung dengan laut. Pengaruh pasang surut terhadap sirkulasi kecepatan pola arus dan debit sungai yang masuk ke Pelabuhan Belawan sangat besar.  Salah satu model matematik untuk pemecahan masalah diatas adalah melakukan kajian dengan menggunakan software SMS (Surface-Water Modeling System) versi 11.1 pada modul RMA2, untuk mengetahui elevasi muka air pada titik di hulu dan hilir pelabuhan pada saat spring tide dan neap tide di musim basah (November) dan musim kering (Juli). Berdasarkan hasil yang didapatkan, kecepatan arus saat pasang tertinggi di musim basah adalah 0,04367 m/s - 0,4608 m/s, kecepatan arus saat pasang terendah di musim tersebut adalah berkisar antara 0,00028 m/s – 0,00287 m/s. Sedangkan kecepatan arus saat pasang tertinggi pada musim kering adalah 0,0229 m/s - 0,2744 m/s dan kecepatan arus saat pasang terendah adalah 0,0003 m/s – 0,0019 m/s. Kecepatan arus pada musim basah cenderung lebih besar daripada musim kering, disebabkan karena pengaruh pasang surut dan debit yang besar, meskipun pada simulasi angin dianggap konstan, tidak menutup kemungkinan bahwa pengaruh tekanan angin pada pelabuhan mempengaruhi kecepatan aliran.Kata Kunci : Eddy Viscosities, Pelabuhan Belawan, Pola Aliran, SMS v11.1 ABSTRACTBelawan Port is the largest port in Sumatra and the third largest in Indonesia's after the Tanjung Priok and Tanjung Perak. Belawan Port is located in mainland peninsula between Belawan and Deli river.The modeling of flow pattern in Belawan Port will encounter a very complex problem, because of the irregular geometry of coastal area which is directly connected to the sea. Tidal influence on flow circulation and the river discharge into Belawan Port is very significant. One of the mathematical models to solve the above problem is aimed to study the use of SMS software (Surface-Water Modeling System) version 11.1 on RMA2 module, to determine the water level at port including upstream and downstream during spring tide and neap tide on the wet season (November) and the dry season (July). Based on the obtained results, the flow velocity of the highest tide on the wet season is 0.04367 m/s - 0.4608 m/s, the flow velocity of the lowest tide on the dry season is between 0.00028 m/s  and 0.00287 m s. While the flow velocity of the highest tides on the dry season is 0.0229 m/s - 0.2744 m/s and low tide flow velocity is 0.0003 m/s - 0.0019 m/s. Flow velocity on the wet season tends to be larger than the dry season due to the influence of tide and large discharge. Although the wind is considered constant on this simulation, it is possible that the wind pressure against the port affects the flow velocity. Keywords: Belawan Port, Eddy Viscosities, Flow Pattern, SMS v11.1

scholarly journals ANALISIS HASIL SURVEI BATIMETRI DAN ARUS DI PELABUHAN JAMPEA KABUPATEN SELAYAR

TEKNIK HIDRO ◽  
2019 ◽  
Vol 12 (2) ◽  
pp. 25-31
Author(s):  
Syatir Suaib ◽  
Ahmad Alieffathur Rusvan ◽  
A. Imran Anshari
Keyword(s):  
Surface Water ◽  
Neap Tide ◽  
Spring Tide ◽  
Water Modeling ◽  
Surface Water Modeling

Survei Batimetri dan Arus dilakukan untuk  mengetahui peta batimetri dan pola arus disekitar pelabuhan Jampea. Hasil penelitian ini diharapkan dapat memberikan gambaran hasil pengujian di lapangan dengan hasil uji numerik pada data yang akan diolah.  Penelitian dilaksanakan pada bulan Juni hingga bulan Agustus 2019 di perairan pelabuhan Jampea Kabupaten Selayar. Metode yang digunakan adalah kuantitatif. Pengambilan data pemeruman  dengan Echosounder  Singlebeam Garmin  GPS MAP 178C.  Sedangkan pengukuran arus dilaksanakan 2 kali, yaitu pada saat pasang tertinggi (spring tide) dan terendah (neap tide).  Penyajian  data  ditampilkan  dengan software SMS 10.0 (Surface water modeling system).  Dari hasil pengukuran dilapangan bahwa arus menjelang pasang memiliki kecepatan rata-rata adalah 0,044 m/s, pada saat pasang inilah arus laut mengarah ke arah tenggara. Sementara itu, pada saat menjelang surut, kecepatan arus rerata adalah 0,08 m/s dan mengarah ke barat laut. Sedangkan pada hasil analisa software SMS.10 dimana pada saat surut, arus di sekitar lokasi studi dominan bergerak dari tenggara ke barat laut dengan kecepatan rerata 0,009 m/detik dan pada saat pasang di sekitar daerah studi arus bergerak dari barat laut menuju ke tenggara dengan kecepatan  rerata yaitu  0,0084 m/detik.  Kondisi batimetri pada areal sekitar pelabuhan Jampea termasuk kategori pantai yang landai dimana pesisir atau tepi laut yang daratannya menurun sedikit demi sedikit ke arah laut yang mengakibatkan pengaruh pasang surut sangat jauh keluar menuju ke laut. 

scholarly journals Water and Salt Transports in the Hengsha Channel of Changjiang Estuary

2022 ◽  
Vol 10 (1) ◽  
pp. 72
Author(s):  
Rui Ma ◽  
Jianrong Zhu
Keyword(s):  
Water Transport ◽  
Neap Tide ◽  
Spring Tide ◽  
Dry Season ◽  
Changjiang Estuary ◽  
Dynamic Mechanism ◽  
Gradient Force ◽  
Residual Water ◽  
Wet Season ◽  
The North

In a multilevel bifurcated estuary, the channels between the bifurcated branches play important roles in the exchanges of water and salt. In the Changjiang Estuary, the Hengsha Channel (HC) connects the North Channel (NC) and the North Passage (NP). In this paper, based on a two-way nesting unstructured quadrilateral grid, finite-differencing, three-dimensional estuarine and coastal ocean model, the tidal and seasonal variations in the water and salt transports in the HC were simulated, and their dynamic mechanism was analyzed. The residual water and salt transports in the HC both flow southward from the NC to the NP. In wet season, the residual water transport in the HC is 677 m3/s during neap tide and 245 m3/s during spring tide, and the residual salt transport is 0. In dry season, the residual water and salt transports in the HC are 1278 m3/s and 0.38 t/s during neap tide, respectively, and 1328 m3/s and 12.61 t/s during spring tide. Affected by the northerly wind and the southeastward baroclinic gradient force, the water and salt fluxes in dry season are much larger than those in wet season. The dynamic mechanism responsible for the water transport in the HC was numerically simulated and analyzed.

scholarly journals Hydrologic and Water Quality Modeling of the Pebble Mine Project Pit Lake and Downstream Environment after Mine Closure

Minerals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 727 ◽  
Author(s):  
Ann Maest ◽  
Robert Prucha ◽  
Cameron Wobus
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Failure Modes ◽  
Porphyry Copper ◽  
Water Quality Modeling ◽  
Open Pit ◽  
Mine Closure ◽  
Pit Lake ◽  
Water Modeling ◽  
Surface Water Modeling

The Pebble Project in Alaska is one of the world’s largest undeveloped copper deposits. The Environmental Impact Statement (EIS) proposes a 20-year open-pit extraction, sulfide flotation, and deposition of separated pyritic tailings and potentially acid-generating waste rock in the pit at closure. The pit will require perpetual pump and treat management. We conducted geochemical and integrated groundwater–surface water modeling and streamflow mixing calculations to examine alternative conceptual models and future mine abandonment leading to failure of the water management scheme 100 years after mine closure. Using EIS source water chemistry and volumes and assuming a well-mixed pit lake, PHREEQC modeling predicts an acidic (pH 3.5) pit lake with elevated copper concentrations (130 mg/L) under post-closure conditions. The results are similar to water quality in the Berkeley Pit in Montana, USA, another porphyry copper deposit pit lake in rocks with low neutralization potential. Integrated groundwater–surface water modeling using MIKE SHE examined the effects of the failure mode for the proposed 20-year and reasonably foreseeable 78-year expansion. Simulations predict that if pumping fails, the 20-year pit lake will irreversibly overtop within 3 to 4 years and mix with the South Fork Koktuli River, which contains salmon spawning and rearing habitat. The 78-year pit lake overtops more rapidly, within 1 year, and discharges into Upper Talarik Creek. Mixing calculations for the 20-year pit show that this spillover would lead to exceedances of Alaska’s copper surface water criteria in the river by a factor of 500–1000 times at 35 miles downstream. The combined modeling efforts show the importance of examining long-term failure modes, especially in areas with high potential impacts to stream ecological services.

Doppler Radar-Derived Rainfall Data Monitoring to Support Surface Water Modeling of TMDL

2008 ◽  
Vol 10052 ◽  
pp. 273-280 ◽  
Author(s):  
T. S. Wu ◽  
Doug Gilbert ◽  
Henry E. Fuelberg ◽  
Harry Cooper ◽  
Del Bottcher ◽  
...  
Keyword(s):  
Surface Water ◽  
Doppler Radar ◽  
Rainfall Data ◽  
Data Monitoring ◽  
Support Surface ◽  
Water Modeling ◽  
Surface Water Modeling

A Coupled Groundwater-Surface Water Modeling Framework for Simulating Transition Zone Processes

Ground Water ◽  
2016 ◽  
Vol 55 (3) ◽  
pp. 302-315 ◽  
Author(s):  
Pradeep Mugunthan ◽  
Kevin T. Russell ◽  
Binglei Gong ◽  
Michael J. Riley ◽  
Arthur Chin ◽  
...  
Keyword(s):  
Surface Water ◽  
Transition Zone ◽  
Water Modeling ◽  
Modeling Framework ◽  
Surface Water Modeling

Study on the Contamination of NH3-N and Total Phosphorus in the Seasonal River

2013 ◽  
Vol 864-867 ◽  
pp. 79-82
Author(s):  
Xue Ying Song ◽  
Xiao Jun Hu ◽  
Ru Jing Liang ◽  
Yu Shuang Liang ◽  
Wen Juan Sun
Keyword(s):  
Surface Water ◽  
Total Phosphorus ◽  
Industrial Wastewater ◽  
Quality Standards ◽  
Domestic Sewage ◽  
Dry Season ◽  
Main Stream ◽  
Wet Season ◽  
Permissible Levels ◽  
Taizi River

Water samples were collected from the upstream to the downstream of a seasonal river, the Taizi River, and its main tributaries in dry season, normal season, and wet season. The variations of NH3-N, and total phosphorus (TP) within a hydrological year were analyzed, aimed to study the pollution characteristics and sources of the water bodies. It was found that the tributaries of the Taizi River were heavily contaminated by NH3-N, with 83.8%, 100% and 100% of the sampling sites exceeding the fifth level in the dry season, wet season and normal season, respectively. The concentration of TP in the dry season fluctuated wildly, which was much higher than those in the wet and normal season. Compared with the permissible levels set by the environmental quality standards for surface water standard (GB3838-2002) of China, 57.1% of the sampling sites in the main stream and tributaries of the Taizi River belong to the fifth level or exceed the fifth level in the dry season, and only 7.1% of the sampling sites were belonging to the fifth level or exceed the fifth level in the wet and normal season. Overall, the waterbody of Taizi River was more seriously polluted by urban domestic sewage and point source of industrial wastewater.

scholarly journals Hydrogeological, hydrochemical, and natural isotopes evaluation of groundwater and surface water interactions in the alluvial plain, tropical region of southeastern Brazil

2021 ◽  
Author(s):  
Waldilene Correa ◽  
Sueli Pereira ◽  
Joaquim Ernesto Bernardes ◽  
Paulo Ricardo Pereira
Keyword(s):  
Surface Water ◽  
Groundwater Flow ◽  
Rainy Season ◽  
Dry Season ◽  
Alluvial Plain ◽  
Morphological Features ◽  
Southeastern Brazil ◽  
Wet Season ◽  
Natural Isotopes ◽  
Abandoned Meanders

Groundwater-Surface water interactions in alluvial plains facing morphological features are the subject of the study. Considered transitions zones, alluvial plains have different morphological features interfering with groundwater flow and hydrochemistry. The alluvial plain of Mogi Guaçu river (southeastern Brazil) presented topography-controlled groundwater flow, nevertheless, natural levees, wet fields, oxbow lakes, and abandoned meanders can control local flow and interfere in discharges points of the main river. Two sampling water campaigns were done in the dry and wet season for physicochemical and natural isotopes analysis, collecting in total 44 groundwaters samples from monitoring wells and eight water samples from the river, creek, and lake. The groundwaters in wet fields and terraces, and surface waters from creek and lake presented low mineralization (EC from 8 to 37 μS.cm), pH acidic (4.98 to 5.8), and essentially Ca and Na-HCO composition. River waters samples presented pH between 5.92 e 7.69 (acidic in the rainy season and basic in the dry season), and EC from 24.2 and 181.1 μS/cm (lower values in the wet season), Na-HCO and Na-HCO-SO (dry season) and Ca-HCO and Na-HCO (rainy season) compositions. In dry season groundwaters composition showed evolution from sodium mixed (SO – HCO) to bicarbonate waters and higher mineralization; in wet season waters varied from Ca to Na-HCO composition and low mineralization, denoting dilution due to rainwater infiltration. Closer to the river margins, in abandoned meanders and oxbows, the groundwaters have increased values of EC and major ions indicating GW-SW mixtures, and effluent-influent changes (descendent and ascendent flux) in wet and dry seasons, respectively. Natural isotopes in groundwaters imply meteoric origin, without evaporation during recharge and high d-excess can be influenced by continental air masses and Amazonia Basin low-level jet. Shallow water table, permeable silty-sand material of vadose zone, flat terrain, and pristine conditions can contribute to direct infiltration of rainwaters, recharging the shallow aquifer.

Seasonal Variations of the Regular Indices of the Surface Water in the Taizi River

2014 ◽  
Vol 513-517 ◽  
pp. 4486-4489
Author(s):  
Xiao Jun Hu ◽  
Li Qi Sun ◽  
Xue Ying Song ◽  
Wen Juan Sun ◽  
Ru Jing Liang
Keyword(s):  
Surface Water ◽  
Seasonal Variations ◽  
Dry Season ◽  
Liaoning Province ◽  
Wet Season ◽  
Ph Values ◽  
Northeast Of China ◽  
Taizi River

The regular indices of the surface water of the Taizi River, Liaoning Province, northeast of China, were investigated. Samples were collected from upstream to downstream locations of the mainstream, and also from the tributaries of the Taizi River in dry season, wet season, and normal season, respectively. The DO values of the surface water ranged from 3.35 mg/L to 18.73 mg/L, 0.09 mg/L to 13.44mg/L, and 3.49 mg/L to 16.9 mg/L, respectively, in the dry season, wet season, and normal season, respectively. The seasonal variations of the pH values of the surface water were in the order of dry season >wet season >normal season.

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