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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards)
Aziz, Muhammad Luthfi
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Environmental Science

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Identification of Volcanic Breccia Formation Distribution in Relation to Groundwater Aquifer Potential Using 3D Resistivity Data Modelling Fatahillah, Hilmi El Hafidz; Ratna, Putri Natari; Septiawan, Fardy; Pratama, Ridho Nanda; Al Ghiffari, Muhammad Razzaaq; Wicaksono, Noviarso; Hidayat, Wahyu; Noor, Mochamad Rifat; Widiaputra, Taufiq; Aziz, Muhammad Luthfi; Ramadhan, Rachmat
Jurnal Lingkungan dan Bencana Geologi Vol 14, No 3 (2023)
Publisher : Badan Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34126/jlbg.v14i3.484

Abstract

Electrical resistivity tomography (ERT) method has been widely used in environmental surveys including hydrogeology study to provide images of the subsurface resistivity distribution. In this study, ERT survey using Wenner - Schlumberger electrode configuration was conducted to investigate the distribution of groundwater aquifer potential in the area dominated by various weathered volcanic rocks that unconformably overlaid limestone formation. The resistivities were measured using ARES resistivity meter each with total of 48 electrodes. The resistivity data were then processed using the robust inversion method that is more optimal to characterize sharp lithological boundary transitions observed in the study area. The resistivity value of the inverted model is interpreted into three different lithologies, namely soil (1.82-5 Ωm), volcanic breccias (5-20 Ωm) and limestone (>20 Ωm). This lithological interpretation was confirmed by borehole cutting report from the nearby well, regional geological map, and direct geological observation. Further, the inverted ERT section along with geological observation indicated volcanic breccias as an aquifer potential in the study area. The 2D resistivity cross-section is then gridded to obtain a 3D model of the potential aquifer geometry. From the model, the volume of volcanic breccia which is suspected as an potential aquifer layer is estimated at 122,392,828 m3.
Surface Runoff Analysis Using SCS-CN Method in Summarecon Serpong Area Cantik, Bella Koes Paulina; Sapan, Elenora Gita Alamanda; Ghiffari, Muhammad Razzaaq Al; Yuvhendmindo, Muhammad Ravi; Aziz, Muhammad Luthfi
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 18 No. 2 (2022): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v18i2.53248

Abstract

The increasing population is definitely in line with the rising demand for housing. One area with many residents is Tangerang Regency, Banten with a population growth rate of 5,85% per year. PT. Summarecon Agung Tbk. becomes one of the developers of an integrated area in Tangerang Regency in fulfilling housing's need. However, the wider the development of an area, it is parallel with the changes in land cover that significantly impact surface runoff. Therefore, this study aims to determine the surface runoff in the Summarecon Serpong area. The research method used is the Secondary Data Analysis (SDA) approach which requires several data; rainfall, land cover, and soil type. These data were then processed using Frequency Analysis to obtain design rainfall and continued to the SCS-CN Method to obtain surface runoff with the return period at 2 years, 5 years, 10 years, 20 years, and 100 years. The land cover in the Summarecon Serpong area was dominated by buildings, with the Hydrologic Soil Groups (KHT) in the form of Groups C and D. The calculation of the Composite Curve Number (CNk) value based on land cover and Hydrologic Soil Groups were 88,89, while the calculation of direct runoff using the SCS CN Method with a return period of 2 years, 5 years, 10 years, 20 years, and 100 years respectively were 77 mm, 121 mm, 154 mm, 188 mm, and 275 mm. The lowest surface runoff occurred on land cover in the form of green open land with Hydrologic Soil Group C, and the highest surface runoff occurred on land cover in the form of water bodies. This analysis indicates that focusing on the green open land in the Summarecon Serpong area can reduce surface runoff while increasing infiltration to maintain the sustainability hydrologic system.
Co-Authors Al Ghiffari, Muhammad Razzaaq Cantik, Bella Koes Paulina Fatahillah, Hilmi El Hafidz Ghiffari, Muhammad Razzaaq Al Noor, Mochamad Rifat Noviarso Wicaksono Pratama, Ridho Nanda Rachmat Ramadhan, Rachmat Ratna, Putri Natari Sapan, Elenora Gita Alamanda Septiawan, Fardy Taufiq Widiaputra, Taufiq Wahyu Hidayat Yuvhendmindo, Muhammad Ravi