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All Journal Jurnal Teknik Sipil RACIC : Rab Construction Research JURNAL TEKNIK HIDRAULIK Journal of Applied Agricultural Science and Technology
Arno Adi Kuntoro
Institut Teknologi Bandung
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Engineering

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ANALISIS INDEKS KEKERINGAN DI DAS ROKAN PROVINSI RIAU MENGGUNAKAN DATA CFSR Novreta Ersyi Harfia; M. Syahril Badri Kusuma; Arno Adi Kuntoro
Racic : Rab Construction Research Vol 1 No 02 (2016): Terbitan Kedua Desember 2016
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6911.457 KB)

Abstract

Salah satu komponen penting dari strategi kekeringan nasional adalah sistem pemantauan kekeringan secara komprehensif yang dapat memberi peringatan pada awal dan berakhirnya kekeringan, menentukan tingkat keparahan, dan menyebarluaskan informasi pada berbagai sektor. Dilatarbelakangi oleh hal tersebut, maka pada penelitian ini dilakukan analisis indeks kekeringan pada DAS Rokan Provinsi Riau. Indeks kekeringan dianalisis dengan menggunakan dua metode yaitu KBDI (Keetch-Byram Drought Index) dan SPI (Standardized Precipitation Index). Karena keterbatasan data dari stasiun observasi yang ada pada DAS Rokan, maka pada penelitian ini digunakan data dari Climate Forecast System Reanalysis (CFSR) dari The National Centers for Environmental Prediction (NCEP). Data hujan CFSR tersebut dikoreksi terlebih dahulu sebelum digunakan. Metode KBDI dan SPI dapat digunakan untuk menganalisis secara spasial dan temporal kekeringan yang terjadi pada DAS Rokan. Hubungan antara sebaran kekeringan dan sebaran hotspot diperlihatkan dengan lebih baik melalui metode KBDI dibandingkan dengan metode SPI.
Pemodelan Intrusi Air Asin Pada Akuifer Pantai (Studi Kasus: DKI Jakarta) Alan Wijaya; Arno Adi Kuntoro; Edy Anto Soentoro Gondodinoto
JURNAL TEKNIK HIDRAULIK Vol 10, No 1 (2019): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1508.061 KB) | DOI: 10.32679/jth.v10i1.583

Abstract

Main issues frequently faced by communities living in the city of Jakarta is salt water intrusion. This paper analyzes the extent of the distribution of saltwater contamination to coastal aquifers in Jakarta, the method used is the open source program FREEWAT. modeling is carried out in five scenarios, namely (1) reduction of 50% of groundwater use, (2) reduction of 25% of groundwater use, (3) existing groundwater use in 2012, (4) increase of 25% of groundwater use, and (5) increase of 50% of groundwater use. From the modeling results, the distribution of saltwater contamination on each layer of the aquifer of Jakarta. In unconfined aquifer the existing condition is scenario 3 intrusion as far as 1.604 m, on scenario 1 there is an intrusion decrease of 38%, in scenario 2 there is an intrusion decrease of 13%, in scenario 4 there is an increase in intrusion by 17% and on scenario 5 increase intrusion by 25%. In upper confined aquifer, the existing condition, namely scenario 3, has occurred as much as 1.809 m intrusion, in scenario 1 there is an intrusion decrease of 23%, in scenario 2 there is an intrusion decrease of 8%, in scenario 4 there is an increase in intrusion by 19% and in scenario 5 increase intrusion by 26%. In middle confined aquifer, the existing condition is scenario 3, 1.927 m intrusion occurs, on the scenario 1 there is an intrusion decrease of 23%, in scenario 2 there is an intrusion decrease of 9%, in scenario 4 there is an increase in intrusion by 16% and in the scenario 5 increase intrusion by 22%.
Pengaruh Perubahan Tutupan Lahan terhadap Debit Banjir di Daerah Aliran Sungai Ciliwung Hulu Mohammad Farid; Maryo Inri Pratama; Arno Adi Kuntoro; Mohammad Bagus Adityawan; Faizal Immaddudin Wira Rohmat; Idham Riyando Moe
Jurnal Teknik Sipil Vol 28 No 3 (2021): Jurnal Teknik Sipil
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2021.28.3.8

Abstract

Abstrak Jakarta yang berfungsi sebagai pusat pemerintahan dan bisnis Indonesia seringkali mengalami permasalahan bencana banjir. Kejadian banjir yang terjadi tidak hanya disebabkan oleh tingginya intensitas hujan yang terjadi namun juga dipengaruhi oleh faktor-faktor lain, khususnya perubahan tutupan lahan yang memperkecil daerah resapan air hujan.. Studi ini merupakan suatu upaya untuk memprediksi dampak perubahan tutupan lahan yang terjadi terhadap dinamika banjir yang melanda ibu kota Negara Indonesia ini. Penelitian ini terbagi dalam 3 bagian yaitu pengumpulan data, pemodelan hidrologi dan analisis sensitivitas banjir terhadap perubahan tutupan lahan. Hidrograf Sintetis SCS CN digunakan untuk analisis hidrologi untuk mendapatkan peningkatan debit dan volume limpasan. Analisis hidrologi menunjukkan perubahan tutupan lahan berdasarkan tren yang tercatat menyebabkan peningkatan debit puncak dan volume limpasan pada tahun 2030 masing-masing sebesar 26% dan 24%. Namun demikian, dengan mengikuti Rencana Tata Ruang Kabupaten Bogor dan sekitarnya, peningkatan pengaruh banjir terhadap debit puncak dan volume limpasan dapat diminimalisir  hingga berturut-turut sebesar 5.26% dan 4.94%. Setiap 13 km2 kawasan hutan atau pertanian yang diubah menjadi kawasan perkotaan atau tanah kosong, debit puncak banjir dan volume limpasan meningkat sebesar 4.63% dan 4.34%. Kata-kata Kunci: Ciliwung, banjir, SCS-CN. Abstract Jakarta, serves as the center of government and business in Indonesia, often experiences flood problems. The floodings that occur is not only caused by the high intensity of rain but is also influenced by other factors, especially changes in land cover that reduce the rainwater catchment area. This study is an attempt to predict the impact of land cover changes on the dynamics of floods that hit the capital city of Indonesia. This research is divided into 3 parts, namely data collection, hydrological modeling and analysis of flood sensitivity to land cover changes. SCS CN Synthetic Hydrograph was used for hydrological analysis to obtain increased discharge and runoff volume. Hydrological analysis shows that changes in land cover based on trends will cause an increase in peak discharge and runoff volume in 2030 by 26% and 24%, respectively. However, by following the Spatial Plan for Bogor Regency and its surroundings, the increase in the influence of flooding on peak discharge and runoff volume can be minimized to 5.26% and 4.94%, respectively. Every 13 km2 of forest or agricultural areas that are converted into urban areas or urban area, the peak flood discharge and runoff volume increase by 4.63% and 4.34%. Keywords: Ciliwung, flood, SCS-CN.  
Flood Modelling of Premulung River, Bengawan Solo Ferdi Pangestu; Arno Adi Kuntoro; Eko Winar Irianto
Journal of Applied Agricultural Science and Technology Vol. 8 No. 1 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i1.183

Abstract

Premulung River or commonly known as Kali Premulung is one of many branches of Bengawan Solo River in its upstream area. This river pass through one of the most historical cities in Central Java, Surakarta. The overcapacity of this river leads to flood event that has a negative impact on humans. The purpose of this research is to analyze the Premulung River capacity and simulate the flood caused by rainfall design. The hydrological matter was analyzed using Hydrognomon and HEC-HMS while flood modelling was analyzed using HEC-RAS software one- and two-dimension (1D & 2D) simulation. Model calibrations were carried out based on historical flood events (depth, duration, and area of inundation) and local interview due to data limitation. Based on the simulation, the flood modelling shows that the current capacity of Premulung River cannot accommodate its peak discharge for two (Q2) and twenty years (Q20) return period flood. There are two main spots identified flooded due to Q2 flood with depth varies from 40 to 80 cm and duration from 4 hour to 7 hour. For Q20 flood, there are also two same spots identified flooded with depth varies from 1.2 m to 1.8 m and duration from 6 hour to 9 hour. The result of this study can be a reference for flood dike design in the future which still require further detailed investigation.
Co-Authors Adityawan, Mohammad Bagus Alan Wijaya Edy Anto Soentoro Gondodinoto Eko Winar Irianto Faizal Immaddudin Wira Rohmat Ferdi Pangestu Idham Riyando Moe M. Syahril Badri Kusuma Mohammad Farid Novreta Ersyi Darfia Pratama, Maryo Inri