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All Journal Agromet BULETIN OSEANOGRAFI MARINA Jurnal Ilmiah Desain & Konstruksi Jurnal Ilmu Sosial dan Humaniora Jurnal Sosioteknologi GEA, Jurnal Pendidikan Geografi JOIV : International Journal on Informatics Visualization GUIDENA: Jurnal Ilmu Pendidikan, Psikologi, Bimbingan dan Konseling Jurnal Tecnoscienza Jurnal Sains dan Edukasi Sains Urecol Journal. Part E: Engineering
Dasapta Erwin Irawan
Institut Teknologi Bandung, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Chemical Characteristics of Surface Water of Sumpil River and Groundwater on its Surroundings Mukhlis Arief Irvandi; Hari Siswoyo; Dasapta Erwin Irawan
Urecol Journal. Part E: Engineering Vol. 2 No. 1 (2022): January-June
Publisher : Konsorsium LPPM Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.233 KB) | DOI: 10.53017/uje.137

Abstract

The objective of this study was to know the chemical characteristics of surface water in a segment of Sumpil River and the groundwater on its surrounding. The location of this study was in 3 cross sections, consisting of 1 well on the right of the Sumpil River, 1 well on the left of the Sumpil River flow, and 1 point on the Sumpil River flow. The chemical characteristics of the water were determined by the concentrations of cations and anions in the water sample using the Piper Trilinear Diagram with the GW Chart 1.30 computer program. Based on the results of the study, it was shown that the chemical characteristics of the Sumpil River water and the groundwater at the location of this study were the same, where all water samples had an alkaline earth metals content over the alkali content (zone 1), had a strong acidic content exceeding the weak acidic content (zone 4), have a balanced cation and anion pairs, none of which exceed 50% (zone 9), and shown that all of the water in the location of this study were fresh water.
Chemical Characteristics of Surface Water of Sumpil River and Groundwater on its Surroundings Mukhlis Arief Irvandi; Hari Siswoyo; Dasapta Erwin Irawan
Urecol Journal. Part E: Engineering Vol. 2 No. 1 (2022): January-June
Publisher : Konsorsium LPPM Perguruan Tinggi Muhammadiyah 'Aisyiyah (PTMA) Koordinator Wilayah Jawa Tengah - DIY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53017/uje.137

Abstract

The objective of this study was to know the chemical characteristics of surface water in a segment of Sumpil River and the groundwater on its surrounding. The location of this study was in 3 cross sections, consisting of 1 well on the right of the Sumpil River, 1 well on the left of the Sumpil River flow, and 1 point on the Sumpil River flow. The chemical characteristics of the water were determined by the concentrations of cations and anions in the water sample using the Piper Trilinear Diagram with the GW Chart 1.30 computer program. Based on the results of the study, it was shown that the chemical characteristics of the Sumpil River water and the groundwater at the location of this study were the same, where all water samples had an alkaline earth metals content over the alkali content (zone 1), had a strong acidic content exceeding the weak acidic content (zone 4), have a balanced cation and anion pairs, none of which exceed 50% (zone 9), and shown that all of the water in the location of this study were fresh water.
Propagation Characteristics of Madden Julian Oscillation in the Indonesian Maritime Continent: Case Studies for 2020-2022 Istiqomah, Fadhilatul; Yulihastin, Erma; Wiratmo, Joko; Hermawan, Eddy; Trilaksono, Nurjanna Joko; Irawan, Dasapta Erwin; Yohanes, Kristy Natasha; Ayunina, Amalia Qurrotu
Agromet Vol. 38 No. 1 (2024): JUNE 2024
Publisher : PERHIMPI (Indonesian Association of Agricultural Meteorology)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j.agromet.38.1.1-12

Abstract

Madden-Julian Oscillation (MJO) can affect weather and climate variability in the Indonesian Maritime Continent. MJO propagation is not always the same, previous research has classified MJO into 4 categories: slow, fast, stand, and jump. The objective of this study is to investigate the differences in MJO propagation and the factors that impact it. Daily data for variables such as Outgoing Longwave Radiation (OLR), zonal wind, and sea surface temperature are utilized in this research. The collected data is processed using composite methods based on the 8 MJO phases, with a specific focus on the years 2020, 2021, and 2022. The research findings suggest that warm sea surface temperatures in the Pacific Ocean and zonal winds dominated by Kelvin waves are favorable for MJO propagation. Conversely, cooling sea surface temperatures in the Pacific Ocean and zonal winds dominated by equatorial Rossby waves can hinder MJO propagation. Future researchers are expected to examine the impact of MJO propagation during extreme rainfall occurrences in several regions of Indonesia, as well as the application of machine learning and deep learning methods to predict MJO propagation in the future.
Co-Authors Ahmad Darul Argo, Teti Armiati Arno Adi Kuntoro Ayunina, Amalia Qurrotu Darul, Achmad Darul, Ahmad Deny Juanda Puradimaja Eddy Hermawan Edi Riawan Frida Rani Yuniar Hari Siswoyo hari siswoyo Hendy Sumadi Hendy Sumadi, Hendy Istiqomah, Fadhilatul JOKO NUGROHO Juneman Abraham Muhamad Ratodi Muhammad Aswan Syahputra Mukhlis Arief Irvandi Mukhlis Arief Irvandi Nurhayati, Yunie Oktavia, Putu Prana Ugi Roekmi, Raden Ajeng Koesoemo Rusmawan Suwarman Selvi Marcellia Teti Armiati Argo Trilaksono, Nurjanna Joko Wiratmo, Joko Yogi Sahat Maruli Simanjuntak Yohanes, Kristy Natasha Yulihastin, Erma Yunie Nurhayati