cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
delta.conference@unissula.ac.id
Editorial Address
Jl. Raya Kaligawe Km. 4 Semarang
Location
Kota semarang,
Jawa tengah
INDONESIA
International Conference on Coastal and Delta Areas
Published by Universitas Islam Sultan Agung
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Education,
Earth & Planetary Sciences Other
Arjuna Subject : Psikologi - Psikologi (Lain-Lain)
Articles 121 Documents
 9   10   11   12   13 
SEDIMENT TRANSPORT ANALYSIS FOR SECURING WATER (CASE STUDY: UPPER JENEBERANG RIVER) M. Lukman; S. Pallu; F. Maricar; A. Thaha
International Conference on Coastal and Delta Areas Vol 1, No 2 (2015): the 2th International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Jeneberang River Basin, upstream of Bili-Bili Dam Reservoir is divided into five (5) major sub-basins, named upper and middle main Jeneberang (Bili-Bili Dam Basin : 384.40 km2) , Salo Malino (85.89 km2), Salo Kausisi (37.50 km2), Jene Rakikang (42.2 km2) and Binanga Jajang (22.7 km2). Salo Malino is divided into more two (2) tributaries, named Salo Bulang (23.8km2) and Salo Ahuwa (37.1 km2). Bili-Bili dam is a multipurpose dam for irrigation, electricity, flood mitigation, and raw water. Bili-Bili Irrigation system covering 23,660 Ha of paddy field (Bissua system and Kampili system) of 270 bil.m3, Capacity for flood control 41 bil.m3, capacity for water supply 35 bil.m3, and the total storagevcapacity is 375 bill. M3, ofwhich the effective storage capacity is 346 bi.m3.Bili-Bili dam has been operated since 1999 year, serious sediment issues have been occurred in the Jeneberang river basin. Especially, after gigantic caldera collapse at March,2004, the sediment inflow volume in the reservoir have been reaches totally 49 million m3 as of May 2007. The objective of this study is to analyse the sediment transport at Upper Jeneberang river using HEC-RAS.. Which can be used to perform mobile bed computation. This study covering 32814.80 m length, consist of 80 reach (cross section). Large amount of sediment flowing to the dam could be reduce the capacity of the dam. Consequently the amount of water will reduced.The result is a continuous simulation of the change in cross section as sedimentation processes adjust to the hydraulic condition imposed by the water-sediment hydrograph and the base level control boundary conditions. Based on the analysis which show the erosion area and the sediment accumulated area, the decision maker can make the right choice to construct specific river structures at certain places to prevent sediment flowing to the dam for securing water.Keywords: Sedimentation, Sediment Transport, Securing Water
IMPACT OF EL NINO, IOD, AND MONSOON IN DETERMINING THE POSSIBILITY OF EXTREME RAINFALL OVER SEVERAL REGION AT WEST JAVA Eddy Hermawan; Atje Setiawan Abdullah; Budi Nurani Ruchjana; I Gede Nyoman Mindra; Shailla Rustiana
International Conference on Coastal and Delta Areas Vol 1, No 2 (2015): the 2th International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study is mainly concerned an application of SST Niño 3.4, IOD and Monsoon index in determining the upcoming of the extreme rainfall over the Indonesian Maritime Continent (IMC). As one of the most important region located along the belt equator, the meteorological surface parameter over the IMC suspected is effecting mostly by the Monsoon system. This is a unique country, since located between two great continent (Asia and Australia) and two great ocean (Indian and Pacific). It indicates that the Sea Surface Temperature (SST) should become one of the most important parameter. Although, this region is affected by the Monsoon system, but another event called as the Indian Ocean Dipole (IOD) and El Niño suspected has a great effects also in determining the rainfall anomalies, especially for the extreme conditions. By this reason, we investigated the IOD and El-Niño index signal, especially the SST Niño 3.4 index. By assuming the drought and wet extreme condition is mostly affected by both parameter, we analysed the IOD and SST Niño 3.4 index for period of 1976 to 2000. For study cases, we concentrated to analyse the monthly rainfall data over Java Island, especially when the strongest El Niño and Dipole Mode event comes simultaneously. By applying the Multiple Linear Regression, we found the suitable formula of rainfall prediction over several region at West Java Province. Then, we applied the CPT (Climate Predictability Tools) technique, we found that drought extreme season is mostly affected by El-Niño event, while wet extreme season is mostly affected by the Dipole Mode event. Although, the recent value of SST Niño 3.4 gradually increase more than 2.4oC, however, if the IOD index still going on to the normal (neutral) condition, we suspect that until the end of this year, the drought extreme condition almost never attack to IMC, especially over Java Island. On the other hand, the Dipole Mode looks more responsible in determining the behaviour of rainfall anomalies over Java Island than El Niño event. In the end of ths study, we found that interaction between Monsoon, IOD and El-Niño will give more powerful to determine the rainfall anomalies for next year.
Sedimentation Handling Model Of Sediment Reservoir On Darma Reservoir Das Cimanuk – Cisanggarung Kuningan Regency Abdul Khamid
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Reservoir is a water reservoir in a watershed which is used to irrigate agricultural land, fisheries, water regulator (flood controller), watershed catchmentdams channeled by outlet (river) to the reservoir so as not to flow and stagnant in places beneath it and used for drinking water, as well as tourism. As one of the efforts to overcome the flood, it is necessary to revitalize the water structures as a shelter for rainfall runoff and sediment storage building.This research took a case study at Darma Reservoir. In this study, the analysis was performed using Hydrologic Engineering Center-River Analysis System (HEC-RAS). Based on the simulation results of the existing conditionflow, there is a water runoff at River Station (RS) 10 and RS 9. Hence, the design of sediment reservoir building is performed by using Homogeneous Dam as a prevention of overflowing in Darma Reservoir leading to Cisanggarung watershed. The calculation of water potential is based on Rainfall data, while irrigation water demand is calculated based on irrigation total area, water requirement standard for rice plant and crops, industrial water requirement standard based on BWRP Guidelines, Dit.Jen SDA, drinking water requirement standards based on Dinas Cipta Karya and the standard of fishery needs based onDirectorate of Irrigation. One benefit from the calculation of water discharge is for flood control. Measure to be able to control the overflow of river water so it is not too abundant at certain times that can cause flood is to know how much value of the water discharge. The conditions of water that remain in control can be profitable for the fishing business there. The calculation of the discharge can also indicate a response due to changes in bio-geophysical characteristics that occur in a watershed (by watershed management activities) or changes (seasonal or yearly fluctuations) of the local climate. It can later be useful for the subsequent management of the watershed in accordance to the law of natural balance (ecology) which ultimately creates environmental sustainability. The maintenance of watershed ecology is very beneficial to keep the fishery business running in this water body because the ecosystems in it live with supportingconditionfactors (Asdak 1995). Keywords: Reservoir, DAS. Sedimentation, HEC- RAS
The Influence of Seismic Load to Deformation of Dam Undayani Cita Sari; Abdul Rochim; Windu Partono
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Disaster mitigation due to seismic load (earthquake) needs to be considered. This is especially for dam structure used as a reservoir and water resource. Because of the main function, and building dimension is too large, thus if the dam collapse it will cause a significant catastrophe for the surrounding community and environment. One of the seismic damages to the dam is deformation. This paper presents the effect of seismic load on deformation of dam model simulation. This study took place on the Sermo Dam, Yogyakarta which is located close to Opak Fault –as the suspicious cause of the earthquake in Yogyakarta. Seismic loads used in this study in terms of acceleration time histories. Therefore model can be carried out using PLAXIS simulation. This selected seismic load variations are on the range 5.0-7.0 Mw and epicentrum distance is also restricted in 15-31 Km based on the nearest epicentrum distance between Sermo Dam and Opak Fault. Keywords: seismic load, deformation, dam, modeling
Analysis on Soil Liquefaction Potential in Pangandaran Coastal Area West Java Anida Chaerunisa; Asriana Asriana
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pangandaran, West Java is well known as an earthquake prone area. The impact of an earthquake in a coastal area which contains saturated sand soil is liquefaction potential. This phenomenon occurs when earthquake hits, the water pore pressure increases and the effective stress becomes nil then the soil loss its shear strength. With the objective to study the liquefaction potential in Pangandaran coastal area, this analysis was conducted. Two kinds of analysis were performed by manually calculation method and using Quake Geostudio program. Seed’s method based on safety factor as a key control to determine the liquefaction potential was used. This method requires N-SPT data. The result of the analysis showed that based on Seed method with a value acceleration of earthquake is 0,5g, FS value is 1,55. This value means that Pangandaran coastal area is not susceptible to liquefaction. From the analysis using Quake, as ground acceleration increases, pore water pressure also increases. It means the higher of ground acceleration can have liquefaction potential. Keyword : Liquefaction, Seed method, ground acceleration, Pangandaran
The Value Engineering Analisys Of Drainage Job (Study Case at Cluster Naraya Project of Bukit Semarang Baru) Muhammad Afif Ridwan; Henny Pratiwi Adi; Djoko Susilo Adhy
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Value engineering is a decision-making process based systematic and structured multi disclipinary. Drainage is a disposal water mass media in natural or artificial from the surface or subsurface of a place. In the housing scope, drainage is enabled to accomodate the flow of used water and rain water from the house which then flowed into the downstream or river as the final disposal place. The purpose of this study is to assess the initial design of the stream viewed from the cost budget plan. Find out whether the alternative design are required, find out the ideal alternative design, and get a comparison between the initial design and the alternative design. The result of this research is the analysis of budget plan, the production cost of initial design with u-ditch and buis concrete material is inefficient with budget of cost Rp. 1.781.350.200,- and then made alternative design buis concrete precast with budget of cost Rp. 1.104.667.700,- . After comparison between initial design and some alternative design, it is known that alternative design that can be recomended to be done is the alternative design with buis concrete precast material because it has lower price, by the difference of profit Rp. 676.672.500,-. Keywords : Value Engineering, Drainage
TAMBAK LOROK AS "FISHERMAN VILLAGE" Etika Sukma Adiyanti
International Conference on Coastal and Delta Areas Vol 1, No 2 (2015): the 2th International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Global warming causes climate change and sea level rise. This is a threat for coastalregions, especially for coastal settlements with activities that are influenced by this natural phenomenon. Consequences are damage of houses, humid house environment, sustainability of the houses, obstructed economic activities and domestic works, disruption of sanitation facilities, lack of electricity, failure of transport system, psychological issues and other. Icons Tambak Lorok as " Fisherman Village " is not something familiar to residents of the city of Semarang . Especially for the housewife who every day have to buy the ingredients high in protein and omega fish auction which is adjacent to the main street market in the village ofTambak Lorok. However, there are major problems that are being experienced by this small neighborhood . In fact, this issue includes seven infrastructure that should spoil the fishermen in activity with marine life . With this research we will investigate water urbanism and climate change resiliency in Semarang, specifically the traditional fishercommunity of Tambak Lorok. We intend to find out how the local people in the fisher settlement Tambak Lorok deal with water urbanism, proverty and living with floods.Keywords: Fishercommunity, Environment, Climate Change, Settlement
A Proper Implementation of Water Resources Development, in Integrated and Sustainable Aspects (Two points of Critics on Disregard Implementation of The Act No.7 /2004) Tri Hardhono; Bondan Wismandanikung
International Conference on Coastal and Delta Areas Vol 1, No 1 (2015): Management and Engineering in the Sustainable Development on Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Due to the Act No.7/2004, there are two main purposes in Water ResourcesDevelopment (WRD), that are effectiveness and efficiently in usefulness of water, means integrated and sustainable WRD multipurposes and fight against water destroying behaviors by flood control proper implementations. Planing and Programming involving all the stake holder needs on WRD should be provided to accomplish the optimum development on related physical resources. The needsof water for irrigation, domestic and municipal purposes, industrial use, power etc, would be analysed corespond to the consumptions related to the present and future needs for populations useness in the integrated and sustainable frames. A good stake holders coordination in all aspects of quantities and qualities for all the water needs a proper execution to achieve the most important priority in WRD and strike supervision in managing project all will be the keys of success of the WRD project.In flood control planning and programming should be used the right philosophies of floods, that means based on hydrological cyclus in a river system. River systems which are consists of collecting-transporting and dispersal sub-systems, the hydrology cyclus water running through the three sub-systems from the sea, precipitated in the cathment area, erosed top soil (as in the collecting sub-system), transporting water and sediment, sedimented along the river course (as in the transporting sub-system) and water disperse to the sea include sediment which dominantly sedimented in the estuaries (as in the dispersal sub-system) are the causes in flooding. From that’s points flood control should be taken into account to have the right solutions for each sub-systems by Watershed Management, Flood Control Engineering and River & Coastal Engineering correspondly. Mapping of the needs of society means purposes of water uses such as for agricultures, domestics, industrials, waste, recreation, power etc, sources of water (rain, surface water, groundwater) availabilities, methods of development, allocation and distribution system, future developing and programming will be kept as integrated and sustaianable programme. Many interests or understandingless of WRD that may be as constraints that affected in the implementation of WRD, therefore coordination in management of water suplly on keeping water resources availability, serving-distributing, funding, planning and programming for the now and future needs will be the key of success indeed. But unfortunately there are two points in usefullness of water and flood control concepts of solutions still ought of proceeds. By these paper hopes as for critics on disregarded implementation of the Act No.7/2004, and would be improving in planning and programming in WRD and mainly as the input for the Directorate General of Water Resources Development - Department Public Works and Public Housing.
Manning Roughness Coefficient Study on Bed Materials Non-Cohesive with Parameters Using Entropy to Open Channel Flow Hari Wibowo
International Conference on Coastal and Delta Areas Vol 1, No 1 (2015): Management and Engineering in the Sustainable Development on Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Application of entropy in open channel models presenting relevant aspects oftheoretical issues and practical useful for cross-sectional velocity distribution. The ratio between the average velocity and the maximum depends on the local morphology. Recent research has suggested formulation Manning roughness, n, based on the ratio and the ratio between the position where the velocity is zero and the maximum, y0/ymax, the flow depth of the flow regime. Based on the experience of stable flow, analysis entropy dependence on n parameters, and M for flow depth,proposes an equation y0/ymax to know the bed channel roughness coefficient. The results showed a good linear relationship between estimate n and n entropy calculation and n with the bedform. Obtained from linear regression analysis of the data relationships flume ncalculate= 0,5803netropi + 0,010 with good correlation (R2 = 0.864) using the entropy parameter (M) = 0.8197, while for the data in a natural channel ncalculate = 0.754 netropy+ 0.006 with good correlation (R2 = 0.877) with (M) = 0.914. It also has a fault tolerance (0.005 to 0.293)%, which is still below the tolerance.
Repairs Of Expansive Land For Sub Grade Roads Pratikso Pratikso; Rachmat Mudiyono; Faizal Mahmud
International Conference on Coastal and Delta Areas Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas
Publisher : International Conference on Coastal and Delta Areas

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Subgrade is the most important part in laying the building structure, especially for road construction. The improvement of the quality of road facilities is carried out with initial planning on good pavement layers and should consider the type and strength of subgrade. Road conditions are often damaged in the structure of the road surface layer because it is caused because the structure of the soil in the area often experience shrinkage causing the road becomes cracked and even waving. It is therefore necessary to experiment to stabilize the soil by improving the gradation of mixing the original soil with a larger graded material of rice husk ash, in several experiments with several samples and aggregate mixture to find out the free press value on soil tested both before and after stabilized. The test results showed free press value of comparison between mixing using inorganic salts and lime has increased soil bearing capacity. From the results of this study can be concluded that the addition of the right stabilizer material on expansive soil is good enough to be used to improve the physical and mechanical properties of expansive soil. Keywords: Subgrade, expansive soil, soil stabilization, stabilizer material, soil bearing capacity

Page 11 of 13 | Total Record : 121

 9   10   11   12   13 

Filter by Year

2015 2017


Reset
Filter By Issues
All Issue Vol 3 (2017): The 3rd International Conference on Coastal and Delta Areas Vol 1, No 2 (2015): the 2th International Conference on Coastal and Delta Areas Vol 1, No 1 (2015): Management and Engineering in the Sustainable Development on Delta Areas