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All Journal Journal of Marine and Aquatic Sciences International Journal of Renewable Energy Development POSITRON PRISMA FISIKA BERKALA SAINSTEK Jurnal Sains dan Teknologi Jurnal Pendidikan Fisika Indonesia JURNAL FISIKA Journal of Degraded and Mining Lands Management Jurnal Fisika Unand Jurnal Perikanan dan Kelautan JGE (Jurnal Geofisika Eksplorasi) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Geosaintek JOURNAL ONLINE OF PHYSICS Jurnal Fisika FLUX Jurnal Geocelebes Jurnal Teknologi Mineral dan Batubara JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) Jurnal Geomine JIPF (Jurnal Ilmu Pendidikan Fisika) Acta Aquatica: Aquatic Sciences Journal INDONESIAN JOURNAL OF APPLIED PHYSICS BULLETIN OF THE MARINE GEOLOGY Buletin Sumber Daya Geologi Jurnal Laut Khatulistiwa JMM (Jurnal Masyarakat Mandiri) Jurnal Geosains dan Teknologi Martabe : Jurnal Pengabdian Kepada Masyarakat BULETIN AL-RIBAATH GERVASI: Jurnal Pengabdian kepada Masyarakat Jurnal Geologi Kelautan: Media Hasil Penelitian Geologi Kelautan Jurnal Teori dan Aplikasi Fisika Indonesian Review of Physics (IRiP) Jurnal Fisika dan Terapannya Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Bubungan Tinggi: Jurnal Pengabdian Masyarakat Marine Kreatif Jurnal Geosains dan Remote Sensing (JGRS) Community Empowerment Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Manfish Journal Jurnal Ilmu dan Inovasi Fisika Bina Bahari : Jurnal Pengabdian Kepada Masyarakat Wahana Fisika : Jurnal Fisika dan Terapannya Bulletin of Geology Geo-Image Journal
Muhardi
Program Studi Geofisika, Fakultas MIPA, Universitas Tanjungpura
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Other

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Journal : positron

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Identifikasi Ketebalan Tanah Gambut Berdasarkan Nilai Resistivitas 3D: Studi Kasus Daerah Tempat Pembuangan Akhir Batu Layang Kota Pontianak Muliadi, Muliadi; Zulfian, Zulfian; Muhardi, Muhardi
POSITRON Vol 9, No 2 (2019): November Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1480.644 KB) | DOI: 10.26418/positron.v9i2.34821

Abstract

Tempat Pembuangan Akhir (TPA) Batu Layang yang terletak di Kelurahan Batu Layang Kecamatan Pontianak Utara berada pada lahan gambut. Tanah ini bersifat  sangat labil dan mempunyai daya dukung sangat rendah. Identifikasi ketebalan tanah gambut dilakukan menggunakan metode geolistrik resisitivitas. Ketebalan tanah gambut ini selanjutnya diverifikasi menggunakan data bor tanah yang mana tanah gambut berada hingga kedalaman 4 m. Berdasarkan penampang ressitivitas 2D selanjutnya dibuat penampang resistivitas 3D. Berdasarkan interpretasi nilai resisitivitas 3D, tanah gambut teridintifikasi dari tanah (0 m) hingga kedalaman 7,46 m dengan nilai resisitivitas 40 Ωm hingga 548,3 Ωm. Ketebalan lapisan tanah gambut pada dearah TPA Batu Layang bervariasi dari 4 m hingga 7,46 m.
Monitoring the Urban Heat Island Phenomenon in Pontianak City, West Kalimantan, using Google Earth Engine Sari, Kartika; Sanjaya, Hartanto; Muhardi, Muhardi
POSITRON Vol 14, No 2 (2024): Vol. 14 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v14i2.71475

Abstract

The urban heat island (UHI) phenomenon can cause the land surface temperature (LST) in the city center to be higher than in the surrounding area. The population of Pontianak City increases yearly, resulting in land cover changes and LST distribution. This research aims to monitor the UHI phenomenon by identifying the temporal distribution of LST in Pontianak City. This research analyses the Landsat 8 thermal band, which is converted into LST value based on the normalised difference vegetation index (NDVI). The land cover classification was conducted using a random forest algorithm and acquisition of confusion matrix classification accuracy value. This research utilizes the Google Earth Engine (GEE) platform because of its ability to process satellite data continuously and has data with a sizeable spatiotemporal dimension. The results show a strong relationship between urban development and LST distribution. Based on the land cover classification in 2014 and 2019, there is a significant change in the composition of the surface, namely, built-up land has increased, while open space and vegetation land have decreased. Time series analysis also shows that the average LST of built-up land, open space, and vegetation are 28.10℃, 22.80℃, and 21.56℃, respectively. The results of monitoring the UHI phenomenon can help in better urban spatial planning, especially in increasing green space, because it is proven effective in reducing land surface temperature.
Co-Authors . Apriansyah A.A. Ketut Agung Cahyawan W Adi Susilo Adiltha, Fatina Adiningsih, Nadia Adriati Adriati Agus Naba Ajeng Candra Indrawati Alexsianus Malujung Alfin Wahyudi Andi Hairil Alimuddin Andi Ihwan Angga Irfandi Yudistira Antika, Cory Anwar, M Aprilina Aprilina Athanasius Cipta, Athanasius Azrul Azwar Desi Saputri Sri REZEKI Devi, Marsiana Dilnalsyah, Felas Dita Puswari Doni, Doni Eldoni, Andika Elsa Kurnia Esau Cornelius Evi Noviani Fadjryan Fadjryan Faisal Faisal Farahdiba Helwa Latifah Faurizal Faurizal Febriyanto, Ferdy Felas Dilnalsyah Firman Saputra Fitriani Fitriani Halasan Sihombing Harsita, Sri Hasanuddin Hasanuddin Hendra Perdana Heni Susiati Heni Susiati Heni Susiati Heni Susiati Ibnur Rusi Idmi, Mohammad Habibiy Ilham Ilham Indra Sanjaya Purba Indra Sanjaya Purba, Indra Sanjaya Irawan, Muhamad Fajar Irfana Diah Faryuni Irvan Nur Prasetya Ja'a Khairuni Jannati Jannati Jasmita Jasmita Jayawarsa, A.A. Ketut Jihan Rahmah Ramdlaniyah Joko Sampurno Joko Sampurno Joko Sampurno Jumarang, Muh Ishak Juwono, Alamsyah M. Kaharudin Kaharudin Kaharudin Kaharudin, K Kanti Rahayu Kurniawati, Nur Laily Listiawati Masudi Masudi Mathali'ul Anwar Mathaliul Anwar Maulia, Nasya Putri Mauludi Ariesto Pamungkas Maya Tiara Ayu Medi Rosno Mega Sari Juane Sofiana Mitranikasih Laia Muh. Ishak Jumarang Muhamad Fajar Irawan Muhammad Ghaza Eka Putra Muhammad Haykal Hafiz Azwan Muhammad Reza July Utama Muhammad Soleh Muhardi Muhardi Muliadi Muliadi Muliadi Muliadi Muliadi Muliadi Murti, Tiffany Budi Muslim Muslim Nasharuddin Nazza Kharisma Nur Hayati Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nursiani, Tuti Oktavia Wulandari Oktaviana Tantri Okto Ivansyah Perdana, Radhitya Perdhana, Radhitya Pirdaus, Risky Marolop Pratiwi, Tasya Mahardika Purnama, Desi Indah Putra, Yoga Abdul Malik Putri, Tiara Nusa Radhitya PERDHANA Radhitya Perdhana Rahmawati Rahmawati Rais, Riska Rama Destrealdi Saputra Ramat, Muhammad Farhan Randha Ayu Nurwulandari Rantika, Ika Ria Dhanisa Rifki Rionda Arsyandi Risko, Risko Riza Adriat Rizki Fajania Rosno, Medi Roso Subarkah Safrilia, Putri Salawati Salawati Samueli Windovado Fau Sanjaya, Hartanto Saputra, Sepbriyan Rizky Satria Putra, Yoga Shaska Ramadhan Zulivandama Sihombing, Halasan Siregar, Hans Elmaury Andreas Sugianto Sugianto Suhardi Suhardi Irawan Suteja, Aji Suwiryo, Karto Syaripudin Syaripudin Tia Amanda Tisar Dewi Pratiwi Tomi Tomi Tomi, Tomi Triwerdhana, Afriadhi Tuti Nursiani Ulfa, Marsita Urai Suci Yulies Vitri Indrawati Wahyu Nur Aqni Wahyudi Wahyudi Wahyudi Wahyudi Widodo Widodo Yoga Satria Putra Yoga Satria Putra Yoga Satria PUTRA Yudha Arman Yudhi Yudianto, Didik Yundari, Yundari Yupensius Febi Ariputra Yuris Sutanto Yuris Sutanto Yusanneya Geulis Yusuf Arief Nurrahman Zibar, Zan Zulfian Zulfian Zulian, Zulian Zulkifli, Reynaldi