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Komang Ngurah Suarbawa
Program Studi Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana, Kampus Bukit Jimbaran, Badung, Bali, Indonesia 80361
Astronomy Energy Materials Science & Nanotechnology Medicine & Pharmacology Physics

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Analysis of the Influence of Meteorological Factors on Rainfall Patterns in South Kuta Rizal Afriadi Saragih; I Ketut Sukarasa; Pande Putu Hadi Wiguna; Komang Ngurah Suarbawa; Made Sumadiyasa; I Gusti Agung Widagda
BULETIN FISIKA Vol. 26 No. 1 (2025): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2025.v26.i01.p08

Abstract

Rainfall in an area can be influenced by several meteorological factors, including the geographical location of an area, temperature, air pressure, air humidity, wind direction and speed, and other factors. This study aimed to analyze meteorological factors such as temperature, humidity, and air pressure, as well as wind direction and speed, on rainfall in South Kuta. The effect of temperature, pressure, and air humidity variations on rainfall was analyzed using IBM SPSS Statistics 25.0 software with the multiple linear regression method. The impact of wind direction on the distribution of rainfall in South Kuta was analyzed using WRPLOT View software version 8.0.2 with the windrose method. From the study, the multiple linear regression equation was obtained, namely Y = -175.008 + (-0.451) X₁ + 1.212X₂ + 0.094X₃ + 0.093X₄ with an R2 value of 12.8%, which indicates that only 12.8% of these meteorological factors affect rainfall where air humidity has the most dominant influence with a significance value of p <0.05. Wind direction impact analysis produces a windrose showing that during the rainy season, the dominant wind blows from the West, bringing high humidity. In the dry season, the dominant wind blows from the East, Northeast, and Southeast, bringing low humidity.
Comparison of Geoelectric Method with Audio Magnetotelluric Method (ADMT) in Aquifer Position Testing at Udayana University Hospital Rani Junita Marbun; I Nengah Simpen; I Nengah Sandi; Komang Ngurah Suarbawa; Ni Nyoman Rupiasih; Wayan Gede Suharta
BULETIN FISIKA Vol. 26 No. 1 (2025): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2025.v26.i01.p10

Abstract

Groundwater is an important resource for supporting life, including at Udayana University Hospital, which requires a stable supply of clean water. This study aims to compare the Wenner configuration geoelectric method with the Audio Magnetotelluric (ADMT) method in identifying the position of aquifers. Measurements were conducted around the hospital borehole with a track length of 230 m for the geoelectric method and 50 m for the ADMT method. The results showed that with the geoelectric method, the aquifer position was detected at a depth of 30-37 m with a resistivity of 77.5-144 Ωm and with the ADMT method at a depth of 30-38 m with a resistivity of 1-3 Ωm. In terms of time, the ADMT method is superior, with a total time of 50 minutes and the geoelectric method with a total time of 3 hours 20 minutes. From the cost aspect, the geoelectric method is more economical, with a tool cost of around Rp 126,000,000, and the ADMT method with a tool cost of around Rp 205,000,000. The ADMT method is more accurate in detecting the position of aquifers with an accuracy of 96% with a depth range of 100 m, while the accuracy of the geoelectric method is 92% with a depth of 37 m. Based on these results, the ADMT method is recommended for more accurate and efficient groundwater exploration.
Co-Authors I Gusti Agung Widagda I Ketut Sukarasa I Nengah Sandi I Nengah Simpen Made Sumadiyasa Ni Nyoman Rupiasih Pande Putu Hadi Wiguna Rani Junita Marbun Rizal Afriadi Saragih Wayan Gede Suharta