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All Journal Prosiding Seminar Nasional MIPA Indonesian Physical Review
Ishak S. Erari
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Education Physics

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A NUMERICAL MODEL STUDY OF FIELD WATER DYNAMICS IN THE TOP SOIL LAYER WHICH INVOLVE ROOT UPTAKE Erari, Ishak S.
Prosiding Seminar Nasional MIPA 2012: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2012
Publisher : Prosiding Seminar Nasional MIPA

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Abstract

AbstractTop soil is an important part of the soil to growing the crop because it is a medium to the root distribution and the available water. Vegetables as mustard greens, need water much more to their growing. The last years, long dry period has forced to using irrigation water efficiently. An experiment of the water dynamics to managing need crop water in the top soil was be conducted at clay loam from Bogor, West Java. This experiment of the water dynamics involved the water uptake rate by root of mustard greens (Brassica juncea). The root uptake rate was modeled as a fixed resistance network collaborating the macroscopic model and the microscopic model. The water dynamics equation was numerically solved by the control volume method. Simulation result of the root uptake model compared to the actual transpiration rate data revealed agreement until 18 days of age of the crop in the field. After 18 days, the model overestimates to the actual transpiration data. This was caused by the lisimeter used impermeable to the water. The numerical solution of the water dynamics derived by the control volume method revealed in agreement with the measured data. Distribution of the water in the top soil layer is influenced by the root length density
A NUMERICAL MODEL STUDY OF FIELD WATER DYNAMICS IN THE TOP SOIL LAYER WHICH INVOLVE ROOT UPTAKE Ishak S. Erari
Prosiding Seminar Nasional MIPA 2012: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2012
Publisher : Prosiding Seminar Nasional MIPA

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

Abstract

AbstractTop soil is an important part of the soil to growing the crop because it is a medium to the root distribution and the available water. Vegetables as mustard greens, need water much more to their growing. The last years, long dry period has forced to using irrigation water efficiently. An experiment of the water dynamics to managing need crop water in the top soil was be conducted at clay loam from Bogor, West Java. This experiment of the water dynamics involved the water uptake rate by root of mustard greens (Brassica juncea). The root uptake rate was modeled as a fixed resistance network collaborating the macroscopic model and the microscopic model. The water dynamics equation was numerically solved by the control volume method. Simulation result of the root uptake model compared to the actual transpiration rate data revealed agreement until 18 days of age of the crop in the field. After 18 days, the model overestimates to the actual transpiration data. This was caused by the lisimeter used impermeable to the water. The numerical solution of the water dynamics derived by the control volume method revealed in agreement with the measured data. Distribution of the water in the top soil layer is influenced by the root length density
IDENTIFICATION OF GROUNDWATER POTENTIAL IN MANOKWARI FORMATION IN AMBAN VILLAGE, MANOKWARI, WEST PAPUA USING VERTICAL ELECTRICAL SOUNDING 1-D Kurnia Sari, Ceni Febi; Hilyah, Anik; Erari, Ishak S.; Rohmala, Fajar K.; Anaperta, Yoszi Mingsi
Indonesian Physical Review Vol. 9 No. 2 (2026)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v9i2.576

Abstract

Amban Village (Manokwari, West Papua) has promising groundwater potential, but it is underutilized due to the complex hydrogeology of Quaternary karst limestone, which features rapid fracture conduit flow, low surface permeability, and seasonal water scarcity. This study mapped subsurface aquifers using 1-D Vertical Electrical Sounding (VES; Schlumberger) at nine stations (ST1–ST9) near high-demand areas. Data were collected with an MAE C313-SEV meter (AB/2 = 1–60 m; ~120 m depth) and inverted in IP2WIN, yielding 8–11-layer models with RMS errors of 4.82–24.80%. Conductive layers interpreted as aquifers (0.3–1059 Ω·m) occur at ST4–ST5 (26–30 m; 1–27 Ω·m), ST9 (23–47 m), shallow zones at ST6–ST8 (4–9 m), and deeper targets at ST1–ST2 (43–64 m), generally beneath a resistive cover that helps protect water quality and sustain yield. The observed resistivity-depth patterns indicate both free (unconfined) and confined aquifer systems typical of karst limestone environments. These findings provide a robust scientific foundation for identifying optimal well-drilling locations and developing sustainable groundwater management strategies in similar karst limestone regions. Pump testing and borehole drilling are strongly recommended to confirm aquifer productivity and hydraulic properties.
Co-Authors Hilyah, Anik Rohmala, Fajar K. Sari, Ceni Febi Kurnia Yoszi Mingsi Anaperta