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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Litbang Kota Pekalongan
Bayu Dwi Apri Nugroho
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Computer Science & IT Engineering Public Health

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Mitigasi Dampak Banjir dan Rob Terhadap Lahan Pertanian di Kota Pekalongan Muhammad Wiji Nur Huda Huda; Murtiningrum Murtiningrum; Hanggar Ganara Mawanda; Muhammad Khoiru Zaki; Prieskarinda Lestari; Chandra Setyawan; Bayu Dwi Apri Nugroho; Ngadisih Ngadisih
JURNAL LITBANG KOTA PEKALONGAN Vol. 21 No. 1 (2023)
Publisher : Badan Perencanaan Pembangunan, Penelitian dan Pengembangan Daerah (Bappeda) Kota Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54911/litbang.v21i1.235

Abstract

Pekalongan City has an area of 46,42 km2. Based on land use, 19% of the area, which is 886 ha, is agricultural land. The current flood and tidal disasters have an impact on various sectors, including agriculture. Efforts to deal with this problem have been made by the central, provincial and city governments. However, these efforts have not provided a real solution because floods and tidal disasters continue to expand. Therefore, research is needed which aims to identify the impact of flooding and tidal on agricultural land and provide recommendations for mitigating the impacts of flooding and tidal on agricultural land in Pekalongan City. The research was conducted through data collection methods, data quality testing and analysis, disaster mitigation scenarios, and research outputs. Based on the parameters of class III water quality standards, the BOD values at S1, S3, and S6 were 12.5; 27.6; 7.6 mg/L and the COD values at S2, S3, S6 were 53.7; 88.7; 46 mg/L which exceeds/does not meet the requirements. Therefore, it is recommended that good water governance management, water regulation with the mini polder concept, carry out reclamation of affected agricultural land, manufacture of household domestic sewage sanitation channels, and manufacture of purifier ponds.
Rainfall Thresholds Analysis for Early Warning of Landslides in The Bompon Watershed Milya Aflah Ulul Albab; Bayu Dwi Apri Nugroho
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.628-636

Abstract

The transitional zone between the central and southern morphologies of Java is characterized by steep slopes and thick soil. On the other hand, high rainfall in the area poses a potential threat of landslide hazards. This research is conducted in the Bompon Watershed, located in the transitional zone between Mount Sumbing and the Menoreh Mountains. This study aims to examine the rainfall dynamics leading to landslides in the Bompon Watershed using rainfall threshold analysis. Intensity and duration are selected as parameters to establish the rainfall threshold model. The research findings indicate that long-duration rainfall is the dominant cause of landslides in the Bompon Watershed. High-intensity rainfall can trigger landslides when lasting for more than one day. The established rainfall threshold equation in the Bompon Watershed is I = , where I is intensity and D is duration. The effects of long-duration rainfall include raising the groundwater level, thereby increasing the slope load. The presence of clay in the Bompon Watershed can hinder proper rainwater infiltration. Poorly infiltrated water adds to the slope load and induces slope instability. The calculated rainfall threshold can serve as the basis for early landslide warning systems. Keywords: Landslide, Rainfall threshold, Bompon watershed, Rrainfall intensity, Rainfall duration
Co-Authors Chandra Setyawan Hanggar Ganara Mawanda Milya Aflah Ulul Albab Muhammad Khoiru Zaki Muhammad Wiji Nur Huda Huda Murtiningrum Murtiningrum Ngadisih Ngadisih Prieskarinda Lestari