bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of irrigation aspect in the interconnection system of Telaga Tanjung and Singin Ponds in Tabanan Regency
Authors: Nuraga I K , Ariana I K A 
Published: March 2024

Abstract
Interconnection is a channel that links multiple water channel systems with those downstream of a river area. The proposed system will utilize existing canals in Gadungan, Matan, and Unun Irrigation Areas, extending to the Lambuk Reservoir dam system. The problem is that irrigation areas downstream of the Lambuk Reservoir are Lambuk (726 ha), Babakan Anyar (42 ha), and Lanyah (281 ha) experience water shortages (planting intensity of 170% to 200%) during the dry season. The study utilized water balance methods in rice fields, the basic year method for main discharge at weirs, and interconnection channel analysis for water needs calculation. From the water balance analysis, the Singin System cannot make a new interconnection channel to the Lambuk Reservoir because the available water in each reservoir can only irrigate the Matan and Unun Irrigation Areas. From the Telaga Tunjung System, there is still a lot of water available, especially during the rainy season, so that it can supply the reservoir for the Lambuk Reservoir. This means that the interconnection system from this reservoir still needs to be created from the primary channel of the Gadungan Irrigation Area.
Water conflict analysis in the Balangan Irrigation Area: causes, impacts, and management strategies
Authors: Eryani I G A P , Jayantari M W 
Published: March 2024

Abstract
The Balangan irrigation area has grappled with a 20-year water shortage due to disorganized canal systems, causing water scarcity in droughts and floods during the rainy season. Conflicts between upstream and downstream users compound these challenges. This study analyzes water conflicts, their causes, impacts, and resolution strategies. Employing descriptive approaches, it identifies factors triggering conflicts, their societal and agricultural effects, and sustainable solutions. Findings reveal that the narrowing of water channels, exacerbated by concrete structures, has caused an imbalance in water distribution between Subak Balangan and Subak Palean. Sedimentation and irregular channel regulation exacerbate water loss and prolonged scarcity. The study underscores the necessity of comprehensive management strategies, prioritizing Water Rights and Allocation Policies, Community Participation, and Rainwater Harvesting and Conservation. These strategies promise practical, feasible, sustainable, and impactful solutions. Regulating water rights and allocations provides a framework, and community engagement ensures local perspectives are considered, while rainwater harvesting and conservation techniques reduce water stress and foster agricultural resilience. Integrating these strategies can achieve a comprehensive approach to sustainable water management in the Balangan Irrigation area.
The study of water salinity distribution for supporting agriculture in Katingan I lowland irrigation area, Central Kalimantan
Authors: Rahardjo A P , Rivanto A P , Jayadi R 
Published: March 2024

Abstract
The Katingan I tidal lowland irrigation area (DIR Katingan I) is a sensitive area to salinity changes. This study aims to identify and estimate the spatial distribution of salinity in DIR Katingan I. The method used in this study is field measurement for collecting tidal and salinity data in the Katingan River as well as in several locations of primary and secondary canals. The measured data at the upstream canal, Katingan River, and primary canal as boundary conditions and calibration for hydraulic and water quality simulations. The simulations used HEC-RAS software to estimate salinity spatial distribution under tidal conditions at primary and secondary canals. The results showed that the distribution of water salinity can reach lower primary canals. It is necessary to take anticipatory actions to reduce the salinity intrusion. To overcome the problem, alternative recommended solutions that can be done are sluice gates installation on the lower primary canal, right primary canal, and left primary canal about 1 to 3 km from the mouth of the primary canal. The prediction of salinity spatial distribution is expected to be a useful recommendation for water management in DIR Katingan I, and it is expected to increase agricultural productivity.
Determination of groundwater conservation zones study by considering groundwater recharge changes
Authors: Utomo H , Siswoyo H 
Published: March 2024

Abstract
This paper aims to find a new groundwater conservation zone concept in Indonesia by improving groundwater zoning by considering groundwater recharge changes. The previous zoning criteria only used groundwater level decrease and selected groundwater quality parameters. The ideas of this new concept are related to actual conditions, in terms of groundwater recharge changes due to global climate changes that control the precipitation frequency and in terms of land use changes that control groundwater recharge quantity. The changes are dynamically altered due to anthropogenic interactions. Based on Decree No. 31 2018, the groundwater conservation zone is based on three criteria: the decline of the groundwater table, the groundwater’s physical quality, and the apparent effect on the environment. This research will improve the criteria by suggesting some improvements to that approach: firstly, the application of modeling in calculating the groundwater decline rate, secondly the investigation of the effect of recharge decline due to land use change, and lastly to include recommendations on each zone in the groundwater conservation zone. This new concept is expected will revise the previous Decree that according to the consensus approach is not a scientific approach
Enhancing adoption studies of LID-BMP’S for Storm Water Management Drainage (SWMD) national stadium in Jayapura, Indonesia
Authors: Lufira R D , Utami T , Marsudi S , Setyoningsih C A , Pratama R R 
Published: March 2024

Abstract
The essential of this paper is implementing Low Impact Development (LID) type stormwater Best Management Practices (BMP’s) to reduce stormwater run-off in urban areas. The case study taken is the development area of Jayapura National Stadium. The drainage system at the main stadium is divided into subsurface and surface drainage. Meanwhile, the development area will enhance the study of adopting several LID-BMP’s practices to manage and optimize the design to control stormwater run-off in the stadium before it is discharged into the urban drainage system. The methodology in this study is divided into data collection and planning. The data collected include daily maximum rainfall data, stadium master plan, soil investigation, macro drainage system, drainage master plan, and topography around the stadium. Meanwhile, planning includes calculating rainfall design, soil structure analysis, hydraulic planning, pipe dimensions, and planning for water storage. The rainfall design used is a 5-year return period with Log Person III, the best design from the suitability test analysis, which is 134.39 mm/day. The study examined drainage design effectiveness to control stormwater run-off on the drainage design at the main stadium and surrounding stadiums using the LID-BMP’s framework and compared them. The LID-BMP’s adoption study was to optimize the drainage design to obtain maximum run-off control that can reduce up to 7-10% of stormwater run-off due to design and soil structure. The results provided recommendations to the authorities to modify the current design to achieve the benefits.
A comparative study of SPI, PCI, PCD, and RAI methods for estimating drought in the Palu River Basin, Indonesia
Authors: Sutapa I W , Arafat Y , Lipu S , Rustiati N B 
Published: March 2024

Abstract
The Palu Watershed is vulnerable to extreme hydrological events, especially periods of heavy rains and prolonged dry seasons. This study aims to determine the drought index and the results of a comparison of the drought index between the Standardized Precipitation Index (SPI) and the Rainfall Anomaly Index (RAI), Rainfall Concentration Index (PCI), Rainfall Concentration Level (PCD), and Rainfall Concentration Period (PCP). The data used are monthly rainfall from Bora, Kalawara, Kulawi, Palolo, and Wuasa stations with observation periods from 1985 to 2021. The Pearson and Spearman correlation coefficients are used to determine the relationship between SPI and RAI, PCI, PCD, and PCP. RMSE and MAE are used to find out the absolute error in predictions. The results obtained show: PCI shows a uniform distribution of rainfall (76.57%) and moderately seasonal (32.43%) there is no distribution of seasonal and strongly seasonal rainfall, the dominant SPI is the normal category followed by mild and moderate drought, PCD and PCP show that rainfall is homogeneous and distributed throughout years and no rain is concentrated at any one time, Comparison of the relationship between SPI and RAI is very strong and significant compared to SPI versus PCI, SPI versus PCD and SPI versus PCP.
Reliability of reservoir inflow for supporting the operation simulation model of multi reservoir
Authors: Tantra A Y 
Published: March 2024

Abstract
This research intends to analyze the inflow reliability of the Tugu-Bagong multi-reservoir. The utilization of Tugu Dam is as follows: for fulfilling the irrigation water need of Ngasinan Irrigation Area an area is 1,200 ha, supplying 12 l/s of raw water, controlling the yearly flood in Trenggalek Regency with the discharge is 76.21 m3/s, as the potency of mini-hydro electrical generation (PLTM) in the amount of 0.40 MW, and as the tourism means. However, Bagong Dam, besides being utilized for flood control, is also utilized for supplying raw water, irrigation, and domestic water; for water resources conservation; and recreation or tourism. The methodology consists of collecting the rainfall data and watershed parameters like watershed area, infiltration coefficient each for dry and rainy seasons, retention coefficient, SMC value, etc.; to analyze the dependable discharge due to the rainfall analysis input in 4 discharge conditions: dry season discharge, low water discharge, normal water discharge, and sufficient water discharge. The result of inflow reliability is hoped to be able to support the operation simulation modeling of the Tugu-Bagong multi-reservoir.
Performance of high-resolution satellite rainfall datasets in developing rainfall-duration threshold for landslide incidents over Badung Regency
Authors: Aryastana P , Dewi L , Wahyuni P I 
Published: March 2024

Abstract
Satellite-based rainfall datasets provide high-resolution worldwide rainfall information, which has potential used in identifying rainfall conditions that trigger landslides. Landslides can be forecasted by rainfall thresholds which is used as an early warning system. The threshold model used needs to be validated to know the accuracy in forecasting landslide occurrences provoked by rainfall events. The objective of the current study is to evaluate the ability of three high-resolution satellite-based rainfall datasets (IMERG, GSMaP, and PERSIANN) to develop a rainfall thresholds model for landslide occurrences in Badung Regency. The recent study used cumulative rainfall events (1, 3, 5, 7, 10, 15, 21, and 30 days) leading up to the incidents of landslides. The determination of rainfall threshold values used the statistical distribution namely: first (Q1), second (Q2), and third quartile (Q3). Validation of rainfall threshold results was conducted utilizing receiver operating characteristic (ROC) curves and the area under curve (AUC). The analysis results show that the first quartile (Q1) exhibited the finest accuracy and gives a good estimation of landslide occurrence. Moreover, among all cumulative rainfall events, the 15-day cumulative rainfall demonstrates the highest AUC value (> 0.75), implying a greater likelihood of triggering landslide events over Badung Regency.
The influence of groundwater use on land subsidence in Bandung City
Authors: Ramadhanty N A , Yusuf R , Mardiani  
Published: March 2024

Abstract
Bandung is a developing city with a high need for groundwater for various needs. Many research studies say groundwater usage is one of the causes of land subsidence but the results mostly just take one side either land subsidence or groundwater. If land subsidence can be estimated through the value of groundwater use, then this can help prevent calamity. Therefore, a correlation between groundwater usage and land subsidence is sought to see how much groundwater usage influences land subsidence. Land subsidence research was conducted using the Differential Interferometric Synthetic Aperture Radar (DInSAR) system with the SNAP application. The data used is the use of groundwater from 2017 to 2022 and Sentinel 1-A imagery of six images for annual research and sixty-six images for monthly research. The yield of the average settlement each year from January 2017 to May 2022 is approximately 5cm with a linear regression coefficient of determination of 21% while the groundwater use regression with subsidence per month is not linear but wavy. From this conclusion, another research can be developed regarding other factors causing land subsidence besides the factor of groundwater use which can then be seen how much influence these factors have on land subsidence that occurs.
Emergency action plan for flood disaster mitigation caused by dam failure (case study: Wadaslintang Dam, Indonesia)
Authors: Saputra A W W , Sundari N , Putra S M B 
Published: March 2024

Abstract
The Wadaslintang Dam in Central Java Province is a crucial water storage structure with benefits like irrigation, hydropower, and flood control, which is densely populated downstream. However, the risk of dam failure requires an Emergency Action Plan (EAP) to mitigate flood disasters. The implementation and effectiveness of an Emergency Action Plan protects human lives, help safeguard critical infrastructure, supports economic stability, and fosters community resilience in the face of various emergencies and disasters. This study aims to identify potential risks and consequences associated with the failure of the Wadaslintang dam and its correlation with the EAP. The plan outlines specific steps and procedures to be taken in the event of a dam failure, considering the potential risks and impacts of such an incident and collecting topographic and population data to create evacuation route maps. In conclusion, the EAP for Wadaslintang Dam is essential to minimize risks and protect the affected population during flood disasters. By implementing the plan, coordinating agencies, and ensuring regular updates, the safety and well-being of the population can be safeguarded.
The potential of Monstera sp. phytoremediation in various lead-contaminated water samples
Authors: Darmawan A A , Suryani C L , Aiman U , Alikasturi A S , Anuar M R , Mildaryani W , Maulida Z U , Kurniasari W R , Sambodo R , Sriwijaya B , Nugroho B 
Published: March 2024

Abstract
Ornamental plants have a variety of commodities which have high economic value, expected to improve the community’s economy. In parts of Southeast Asia today there is a booming of ornamental plants type Pokok (Malaysia) or Janda Bolong (Indonesia), However, data related to its ability to absorb heavy metals does not yet exist. Ornamental plants of the type Monstera sp. has potential in phytoremediation technology, based on this, this study was investigate the potential absorption of leads by monstera sp. This study used the RCBD method. The first factor used of water samples including mineral water (W1), distilled water (W2), and surface water (W3). The second factor used in the form of Monstera types includes Monstera obliqua (M1), Monstera tetrasperma (M2), Monstera sp. Peru (M3), then 9 treatment combinations were 3 replication, so that a total of 27 units were obtained. The results of this research indicate that various of Monstera sp. have different absorption capacities of lead. This is also influenced by several factors such as light intensity, leaf area, and the type of water used as a medium. The results of this study proving that the plant Monstera sp. can reduce heavy metals in fields
Direct greenhouse gases from domestic wastewater treatment plant in Bandung Regency, West Java, Indonesia
Authors: Novia F , Febrion C , Erlindra D 
Published: March 2024

Abstract
Wastewater treatment contributes direct greenhouse gas (GHG) emissions in the atmosphere. The study aims to estimate the amount of methane (CH4) and carbon dioxide (CO2) emitted from domestic wastewater treatment plants (WWTP) in Bandung Regency throughout the years 2019-2022. Wastewater treatment processes in the WWTP consist of anaerobic, facultative, and maturation ponds. Data series of water quality from each process were collected on a monthly basis from years 2019 to 2022 to estimate direct emissions. Emission factors used in this study were derived from IPCC Guidelines and using the Tier 1 method. The highest GHG emission from WWTP Bojongsoang was about 513.44 tonCO2e in December 2021. The monthly average CO2e emissions from year to year increased about 40.12%. The average GHG emission from WWTP Bojongsoang from the year 2019 to 2022 respectively was about 81.33 tonCO2e/month, 135.21 tonCO2e/month, 229.26 tonCO2e/month, and 193.89 tonCO2e/month. Overall, the percentage of CO2e emission from anaerobic pond was about 93.57%, from facultative pond was about 4.86%, and from maturation pond was about 1.57%. The highest CO2e emissions occurred in the anaerobic pond along with the highest COD reduction also took place in the anaerobic pond.
Evaluation of bias correction methods for multi-satellite rainfall estimation products
Authors: Andari R , Nurhamidah N , Daoed D , Marzuki  
Published: March 2024

AbstractRainfall data from satellites provides hydrological studies with special temporal and spatial advantages. However, recognising the biases in satellite data is critical, so robust validation and correction methods using ground-based observational data are necessary. This research seeks to correct and validate multi-satellite rainfall data (TRMM, GPM-IMERG, and GSMaP) in order to enable hydrological applications. The corrective methods include linear scaling (LS), empirical quantile mapping (EQM), and local intensity scaling (LOCI). In validation, three statistical metrics are employed: Correlation Coefficient (R), Root Mean Squared Error (RMSE), and Relative Bias (RB). Assessing ten years of monthly data from the Kuranji watershed, LS and EQM emerged as optimal bias correction algorithms for all satellites, with LOCI outperforming TRMM and GSMaP. Corrected monthly rainfall patterns using LS and EQM closely correlate with observed data, substantially reducing discrepancies between field records and satellite-derived rainfall data. This enhances the usability of satellite data for in-depth hydrological studies.
A policy analysis on the inclusion of disabilities in natural disaster management in Indonesia
Authors: Pamungkas D B , Wahyunengseh R D , Haryanti R H 
Published: March 2024

Abstract
Climate change increases the occurrence of natural disasters. From 1909-2023, Indonesia experienced 613 natural disasters. The flood, which had 268 incidents, was the most significant natural disaster. Indonesia is known for being one of the world’s flood-prone areas. This is due to tidal water inundation, sea level rise, river overflows due to high rainfall, and land subsidence and urbanization. In facing climate change and dealing with natural disasters, no one must be left behind. Indonesia has had a policy for managing natural disasters since 1961, but Indonesia only had natural disaster management related to involving people with disabilities in 2007. This research aims to analyses the process of involving people with disabilities in managing natural disasters. The research uses qualitative methods with content analysis policy. The study finds Indonesia already has a national legal basis for involving disabilities from the planning, implementation, monitoring and evaluation stages as well as in the Disaster Risk Reduction Forum. This study concludes that there is a need for integrity between the central government and regional governments in managing natural disasters with the involvement of disabilities.
COD’s Level Reduction of Tofu Industrial Wastewater by Using Activated Coal Fly Ash as Adsorbent
Authors: Purba O G H F , Yanda R , Munandar A , Alam F C , Taher T 
Published: March 2024

Abstract
Tofu wastewater contained a high concentration of COD and will be dangerous if directly discharged into the environment without any pre-processing. In this research, tofu wastewater is processed using an adsorption process to determine the amount of COD reduction in tofu wastewater using coal fly ash. To maximize the adsorption process by enlarging the fly ash’s pores and removing the impurities, fly ash is activated first by using 2 M of H2SO4 100 mL. Fly ash was tested with XRD (X-Ray Diffraction) to know its crystal structure and tested with XRF (X-Ray Fluorescence) to determine the difference in the elemental composition of fly ash before and after the activation process. The research on the effect of time on the adsorption process was carried out with time variations of 15, 30, 45, 60, 75, 90, 105, and 120 minutes. The results showed that the intensity of silica in the fly ash after the activation process was more significant than before the activation process. The optimum time for fly ash to adsorb tofu wastewater was 105 minutes with eficiency of 79,71%.
Fatty Acid Profile of Pometia pinnata J.R.Forst. & G.Forst Seeds Oil as a Potentially Biodiesel Raw Material
Authors: Sholiha F U , Yuniastuti E , Nurrahma A O 
Published: March 2024

Abstract

Pometia pinnata J.R.Forst. & G.Forst was a tropical native to the Pacific region, it was widely found and cultivated in Indonesia and has gained attention for the yield of the seeds oil. The seed oil of Pometia pinnata was investigated for biodiesel raw material. This study explores the promising potential of Pometia pinnata seed oil as a sustainable source for biodiesel production based on the chemical composition of the fatty acid. The seeds were collected from around Central Java Province, Indonesia, and extracted by the soxhlet method. The profile of fatty acid was characterized by Gas Chromatography. The yield of Pometia pinnata seeds oil was 22.37%. Based on the GC Result, the fatty acid concentration was 48,86% of saturated fatty acid and 51,14% of unsaturated fatty acid. The main content of fatty acid was Arachidate (20:00) and Oleate (18:02). The result verified that Pometia pinnata potentially as a biodiesel raw material. These results can be the basis study for further studies about Pometia pinnata used as biodiesel.