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All Journal Jurnal Ilmu Lingkungan Journal of Environment and Sustainability Journal of Research and Technology Prosiding Seminar Nasional Sains dan Teknologi Terapan Al-Ard: Jurnal Teknik Lingkungan Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN Journal of Earth and Marine Technology (JEMT) Lowland Technology International Journal of Applied Sciences, Management and Engineering Technology (JASMET) Tekstur (Jurnal Arsitektur) Jurnal Teknologi Lingkungan Lahan Basah
Yulfiah, Yulfiah
Institut Teknologi Aditama Surabaya
Agriculture, Biological Sciences & Forestry Arts Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Public Health Social Sciences Transportation

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Analisis Hubungan Pola Curah Hujan Akibat La Niña Dengan Kemampuan Drainase Dalam Mengantisipasi Banjir Di Kecamatan Waru, Sidoarjo Priyatmayanti, Swasti Ayudia; Yulfiah, Yulfiah
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2024: Menjembatani Energi Berkelanjutan dan Ekonomi Hijau melalui Transformasi Riset dan Teknologi T
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Fenomena La Niña telah mengakibatkan terjadinya hujan sepanjang tahun, termasuk pada musim kemarau dengan intensitas hujan ringan hingga lebat. Hujan dengan intensitas lebat dapat mengakibatkan banjir dan genangan air pada beberapa wilayah di Kabupaten Sidoarjo. Salah satunya di Kecamatan Waru yang merupakan lokasi dari penelitian ini. Tujuan dari penelitian adalah melakukan analisis variabilitas curah hujan dan keterkaitannya dengan kemampuan drainase dalam mengantisipasi banjir. Berdasarkan hasil analisis data curah hujan selama 15 tahun, diketahui bahwa telah terjadi peningkatan jumlah curah hujan bulanan. Pada tahun-tahun La Niña, terdapat penambahan jumlah curah hujan tahunan, yaitu sebesar 22,1% padaa tahun 2020 dan 30,4% pada tahun 2021. Jika dibandingkan dengan kondisi normal selama 30 tahun, jumlah hari hujan selama tahun-tahun La Niña juga mengalami peningkatan. Hasil analisis hidrologi dan hidrolika, memperlihatkan bahwa, debit banjir rencana (Qn) mencapai 23,7933 m3/det. Sementara itu, kapasitas saluran eksisting (Q) hanya sebesar 15,4185 m3/det. Dengan nilai Qn Q, maka drainase sungai Cantel, Kecamatan Waru, tidak lagi mampu menampung air yang mengakibatkan terjadinya banjir atau genangan air. Agar banjir atau genangan air tidak lagi terjadi, maka perlu desain drainase baru, yaitu dengan ketinggian saluran minimal 1,5 m dan lebar dasar saluran sama dengan data eksisting sebesar 10,2 m.
Analysis of the Relationship between Thermal Comfort Levels and Green Open Space in Semarang City, Using the Humidex Method Faridatussafura, Nurzaka; Yulfiah, Yulfiah
Journal of Earth and Marine Technology (JEMT) Vol 5, No 1 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v5i1.7005

Abstract

The rapid urban development has increased the density of buildings and decreased the Green Open Space (RTH), thereby affecting the thermal comfort of an area. The level of thermal comfort can be observed from the characteristics of temperature and humidity. The determination of thermal comfort levels, especially in Semarang City, is conducted using the Humidex method. The calculation results show Humidex values ranging from 38.83°C to 41.10°C, categorized as uncomfortable to very uncomfortable. The highest Humidex value was recorded at the Semarang Climatology Station in 2023, while the lowest was at the Ahmad Yani Semarang Meteorology Station in the same year. Meanwhile, Landsat 8 imagery analysis shows that from 2014 to 2023, the total land cover transition in Semarang reached 68.541 km² for buildings; 63.104 km² for tree vegetation; 1.353 km² for other vegetation; and 6.784 km² for water bodies. By the end of the research period in 2023, the area of tree vegetation in Semarang City was 91.187 km². The analysis of the relationship between Humidex values and the area of building cover shows a correlation coefficient of 0.87, indicating an increase in building cover area that has raised the Humidex value in Semarang City. Furthermore, the correlation of Humidex with the area of RTH is -0.83, meaning there is a strong negative linear relationship between the Humidex values and the RTH area, or the larger the RTH cover, the lower the Humidex value in Semarang City. To maintain or improve the level of thermal comfort in Semarang City, it is recommended to balance the distribution of RTH locations, especially in the northern and eastern parts of Semarang. The Semarang City government should enhance the quality of RTH by choosing appropriate vegetation, performing regular maintenance, improving facilities and services around RTH, and continuously educating the public.
Impacts of La Niña on Sea Surface Temperature, Chlorophyll-a, and Fishery Productivity in Northern East Java Ocean Bahtiar, Ahmad; Yulfiah, Yulfiah
Journal of Earth and Marine Technology (JEMT) Vol 5, No 2 (2025)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2025.v5i2.7905

Abstract

The La Nina phenomenon occurs when the sea surface temperature in the Northeast Pacific Ocean becomes colder. Meanwhile, temperatures in the Western Pacific Ocean are warmer than usual. Such conditions affect the oceanographic conditions of Indonesia's waters, including the Northern Waters of East Java. Therefore, it is necessary to conduct research aimed at analyzing the impact of the La Nina phenomenon on the fertility of the Northern Waters of East Java, through observations of sea surface temperature (SST) distribution, chlorophyll-a concentration, and fish catch data. SST data and chlorophyll-a concentration were obtained from Aqua-MODIS satellite images and analyzed using quantitative methods. Meanwhile, fish catch data were obtained from seven fishing ports on the North Coast of East Java. The results showed that the SST cycle in East Munson was not affected by the La Nina phenomenon. However, La Nina affects the ever-increasing SST anomaly value. The SST cycle in West Munson decreased in the La Niña period. Chlorophyll-a anomaly values also decreased during the La Nina period, especially from October 2017 to April 2018.  Chlorophyll-a anomaly values tend to increase in the La Nina period from August 2020 to December 2022. This is influenced by the IOD (-) period. There was a time lag in the effect of SST and chlorophyll-a on fish catches. During La Nina, fertility rates in the Northern Waters of East Java tend to be low, marked by warming sea surface temperatures, uneven distribution of chlorophyll-a, and reduced fish catches. Such conditions can be taken into consideration in the planning of mitigation measures for the impacts of La Niña in the maritime and fisheries sectors in the upcoming period.
PENENTUAN HASIL EVALUASI PEMILIHAN SPESIES POHON DALAM PENGENDALIAN POLUSI UDARA PABRIK SEMEN BERDASARKAN KARAKTERISTIK MORFOLOGI Fiona Azzahro; Yulfiah; Anjarwati
Journal of Research and Technology Vol. 5 No. 2 (2019): JRT Volume 5 No 2 Des 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i2.201

Abstract

The rapid development of the country in Indonesia, especially in the fields of industry and technology, is inseparable from the problem of air pollution, especially in the environment, namely pollutant gas and dust. Air pollution needs to be environmentallyfriendly by increasing the amount of vegetation or reforestation by planting tree species that have the ability to grow and absorb pollutant gases and absorb dust particles in polluted environmental conditions. The study uses descriptive analysis by assessing tree elements macroscopically to select the appropriate tree species and can be recommended as an absorber of gas pollutants and dust absorbers based on tree suitability scoring. The results showed that of 7 (seven) dominant tree species identified, there were 3 (three) dominant tree species that were very suitable, 3 (three) dominant tree species were suitable, and only 1 (one) dominant tree species were not suitable for air pollutant gas. Whereas the evaluation of the function of dust particle absorptionshows that all dominant tree species studied have the appropriate criteria in absorbing dust with the acquisition of 65% -75% evaluation value. Keywords: Dust, Pollutant, Tree.
PENGUKURAN TINGKAT IMPLEMENTASI REKOMENDASI HASIL KAJIAN KINERJA LINGKUNGAN PADA LIMA UKM DI SURABAYA Yulfiah, Yulfiah
Al-Ard: Jurnal Teknik Lingkungan Vol. 4 No. 2 (2019): March
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v4i2.483

Abstract

Actually Small Medium Enterprises (SMEs) in the city of Surabaya give negative contributions to the environment. Related to this, two studies have been conducted to help overcome the negative impact. The first stage of the study was analyzed environmental performance of SMEs in Surabaya. As a result of the study, recommendations for activities for SMEs have been formulated to be more pro-environment. The next phase of the second phase of the research, which consists of the level of implementation of the assessment that has been given, the results that can be done regarding the discussion carried out. The results of the second phase of research that discusses the level of implementation of the assessment given to SMEs varies from 50-90%. Thus, SME awareness to make its company a Pro Environment company still has to improve. The formulation of an educational model for SMEs is needed, so that the environmental performance carried out is not limited to passing legislation. Moreover, the performance of the environment implemented by the company is approved, because it provides a larger company and environmental sustainability.
Formulation of an Eruption Mitigation Plan for Mount Merapi Based on Settlement Land Suitability in Umbulharjo, Yogyakarta Putri, F.J.R.; Yulfiah, Yulfiah
Journal of Applied Sciences, Management and Engineering Technology Vol 7, No 1 (2026)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2026.v7i1.8595

Abstract

Umbulharjo sub-district, Kapanewon Cangkringan has experienced an increase in population every year, thereby intensifying the demand for residential land. The area of Umbulharjo sub-district is located within the Mount Merapi Disaster-Prone Area (DPA). Land suitability is an important instrument in mitigation efforts, as it provides an overview of the physical characteristics of the area that influence the level of disaster risk. This study aims to formulate an eruption mitigation plan for Mount Merapi from technical and social perspectives. Residential land suitability analysis was conducted using a quantitative method, namely an overlay technique employing ArcGIS software. The results show that 78.24% of the land is marginally suitable, 21.04% is unsuitable, and less than 1% is suitable for residential use. Relocation emerges as one of the main mitigation strategies to eliminate risk, especially for communities living within disaster-prone zones. However, relocation presents its own implementation challenges, as residents in the study area are unwilling to be relocated, despite the existence of local government policies regulating relocation. Therefore, in addition to focusing on spatial planning, the mitigation plan is also formulated from technical and social aspects, such as enhancing building resilience to earthquakes and volcanic ash, planning evacuation routes, and providing community education, particularly regarding disaster preparedness.
Co-Authors Agatha Mayasari Ahmad Bahtiar, Ahmad Anjarwati Budisantoso Wirjodirdjo Esty Poedjioetami Faridatussafura, Nurzaka Fiona Azzahro Hanik, Siti Umi Jihan Ainur Rohma Mardiana Musa Maritha Nilam Kusuma Mayasari, Agatha Nikmah, Min Sai’in Pawane, Filia Feronika Pissera, Rosa Canina Priyatmayanti, Swasti Ayudia Putri, F.J.R. Solossa, Herce Farida Wahyono Hadi Wiwik Widyo Widjajanti