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All Journal SLUMP TeS : Jurnal Teknik Sipil Serambi Engineering
Munanjar, Muhammad Chairi
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Evaluasi dan Koreksi Data Hujan GPM di Kabupaten Tanah Laut Munanjar, Muhammad Chairi; Hidayat, Muya Ryan
SLUMP TeS : Jurnal Teknik Sipil Vol. 4 No. 1 (2025): SLUMP TeS : Jurnal Teknik Sipil
Publisher : Sekolah Tinggi Teknologi Dumai

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Abstract

Ketersediaan data curah hujan yang akurat dan berkelanjutan merupakan komponen penting dalam perencanaan dan pengelolaan sumber daya air. Namun, di banyak wilayah, termasuk Kabupaten Tanah Laut, data observasi sering kali tidak lengkap akibat keterbatasan stasiun hujan dan pencatatan manual. Penelitian ini bertujuan untuk mengevaluasi akurasi data curah hujan satelit Global Precipitation Measurement (GPM) dan mengembangkan model koreksi menggunakan regresi linier sederhana. Data curah hujan bulanan periode 2020–2024 digunakan, dengan tahun 2020–2023 sebagai data pelatihan dan 2024 sebagai data pengujian. Evaluasi dilakukan dengan membandingkan nilai GPM dengan data observasi menggunakan metrik statistik R², Mean Absolute Error (MAE), dan Nash-Sutcliffe Efficiency (NSE). Hasil sebelum koreksi menunjukkan R² sebesar 0,7904, MAE 50,74 mm, dan NSE 0,7904. Setelah koreksi, R² meningkat menjadi 0,8364, MAE menurun menjadi 39,98 mm, dan NSE naik menjadi 0,8364. Peningkatan ini menunjukkan bahwa regresi linier sederhana efektif dalam memperbaiki estimasi curah hujan GPM. Temuan ini penting untuk mendukung pengelolaan sumber daya air, pertanian, dan mitigasi bencana, khususnya untuk Kabupaten Tanah Laut yang memiliki keterbatasan dalam ketersediaan data observasi yang akurat.
Analisis dan Solusi Kemacetan Lalu Lintas di Simpang Bersinyal (Studi Kasus: Simpang Bersinyal Jl. Panglima Batur Kota Banjarbaru) Munanjar, Muhammad Chairi; Jihan Alya Nabillah; Hafsha Yanti Siregar
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Banjarbaru as one of the strategic cities is experiencing rapid development. This development has an impact on increasing vehicle volume. One of the intersections that often experiences congestion is the signalized intersection on Jalan Panglima Batur, which connects the North Approach (Jalan Pangeran Suriansyah Ujung), the South Approach (Jalan Pangeran Suriansyah), and the West Approach (Jalan Panglima Batur Timur) and the East Approach (Jalan Panglima Batur). This study aims to analyze the performance of the signalized intersection of Jalan Panglima Batur using the MKJI method, 1997. The parameters analyzed include traffic volume, approach capacity, degree of saturation (DS), and level of service (Level of Service/LOS). The results of the analysis show that the East Approach (Jalan Panglima Batur) which has the worst degree of saturation and LOS values ​​compared to the other 3 intersection approaches has the same Level of Service (LOS) value, namely type F. This condition indicates that the intersection capacity is no longer able to accommodate the existing traffic volume, causing congestion, large delays, and long queues at all approaches. To improve intersection performance, improvements are needed, such as adjusting signal cycle times, widening lanes on approaches with the highest traffic volumes, and restructuring activities around the intersection that cause high side traffic, particularly in shopping areas.
Co-Authors Jihan Alya Nabillah Muya Ryan Hidayat