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All Journal HAYATI Journal of Biosciences Indonesian Journal of Geography Jurnal Pembangunan Wilayah dan Kota LaGeografiA Media Komunikasi Geografi Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Majalah Geografi Indonesia JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Tataloka Jurnal Geosaintek MAJALAH ILMIAH GLOBE Jurnal Environmental Science Jurnal Geografi, Edukasi dan Lingkungan Jurnal Epidemiologi Kesehatan Komunitas International Journal of Remote Sensing and Earth Sciences (IJReSES) Jurnal Geografi LIngkungan Tropik (Journal of Geography of Tropical Environments) Jurnal Geosaintek The International Journal of Remote Sensing and Earth Sciences (IJReSES)
Tambunan, Mangapul Parlindungan
Department Of Geography, Faculty Of Mathematics And Natural Sciences (FMIPA), Universitas Indonesia, Depok 16424, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Astronomy Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Environmental Science Health Professions Physics Public Health Social Sciences Other

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ENVIRONMENT QUALITY IDENTIFICATION USING LANDSAT-8 IN THE PERIOD OF COVID-19 LOCKDOWN IN JAKARTA Khalifah Insan Nur Rahmi; Mangapul Parlindungan Tambunan; Rudy P. Tambunan
International Journal of Remote Sensing and Earth Sciences Vol. 20 No. 2 (2023)
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.ijreses.2023.v20.a3850

Abstract

The quality of the urban environment during the Covid-19 lockdown became a concern because it was reported that it had improved but the spatial studies were still limited. Spatial information at regional scale can be extracted from Landsat-8 imagery. This study aims to spatially and temporally analyze environmental quality variables from Landsat-8 Imagery and compare environmental quality indices before, during and after the Covid-19 lockdown in Jakarta. Environmental quality variables extracted from Landsat-8 imagery are PM10, LST, NDVI, NDWI, NDMI. Radiometric correction and masking were applied to obtain Landsat-8 reflectance and radian values. PM10 concentrations were estimated using linear regression between station data and visible-near infrared (VNIR) reflectance band values. The variable land surface temperature (LST) is obtained from the brightness temperature band 10 extraction. NDVI, NDWI, and NDMI are extracted from the transformation of the reflectance band index. The environmental quality index is extracted from a weighted linear combination method where each variable has a weighted value of 50% PM10, 31% LST, 11% NDVI, 5% NDWI, and 3% NDMI. The results of the distribution of the environmental quality index before, during and after the Covid-19 lockdown show changes. Before the lockdown, some areas in Jakarta had a poor environmental quality index, while during the lockdown, only a few areas were still of poor quality, including the reclamation island and the Cilincing industrial area, North Jakarta. After the lockdown, the environmental quality index decreased again i.e. good, medium and bad categories but the distribution was not as wide as before the lockdown.
Study of the Spatial Effect of Geothermal on Surface Water Quality (Case Study of Ci Pamatutan Watershed, Parakansalak Sub-District) Masykur, Fauzan Abdurrahman; Pras, Prasetiawan; Rianputra, M. Rafli Ariq; Umaya, Nesya Desfarivana; Gabriela, Vanesa Kelly; Tambunan, Mangapul Parlindungan; Supriatna, Supriatna
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments)
Publisher : UI Scholars Hub

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Abstract

Geothermal plays an important role in affecting surface water quality with both positive and negative effects. It becomes an efficient renewable energy source in generating electricity without producing harmful gases. However, the presence of geothermal affects the quality of surface water in a watershed. This research is focused on the Mount Salak geothermal area which has volcanic and tectonic activity. Parameters such as electrical conductivity (measured in millisiemens/cm) were used to measure the content of minerals and dissolved compounds in the water. Total Dissolved Solids (TDS) measured in ppt is used to quantify dissolved solids, while water acidity (pH) indicates the acidity or basicity of the water. There are three main locations of geothermal manifestations in the Ci Pamatutan Watershed, Parakansalak District, namely Anjing Crater (Ci Pamatutan Crater), Citaman Crater (Pulasari Taman Crater), and Hot Spring Pool (Ci Seupan). The spatial pattern of hot earth manifestation refers to the reservoir point below the earth's surface 300 meters from the fault and on observation above the earth's surface is marked by a basin pattern in each crater. Spatial patterns of surface water quality were observed with reference to river segmentation and the confluence of river orders from each spring. The research conclusion found that impact of surface water quality on the community occurs when there is a flash flood event, and clean water for the community is taken from the surface flow of the Perbakti slope sub-watershed, which is not affected by the presence of geothermal manifestations.
Co-Authors Aditya Ramadhan Agita Devi Prastiwi Agung Syetiawan, Agung Andri A. Wibowo Annisa Putri Bayu Prasetyo Pambudi Benedict Diah Ardiani Dwi Hastuti Elok Lestari Paramita Elok Lestari Paramita, Elok Lestari Firdaus, Pramudhian Fitriani, Sarah Putri Gabriela, Vanesa Kelly Heinrich Rakuasa Heinrich Rakuasa Isranto Handoyo Putra Jaelani, Lalu Muhamad Khairullah, Muhammad Qabus Abid Khalifah Insan Nur Rahmi Khalifah Insan Nur Rahmi Kuswantoro Marko Lukman, Eva Nurrahmi Mannesa, Masita Dwi Mandini Maryanto Maryanto Masita Dwi Mandini Manessa MASITA DWI MANDINI MANESSA, MASITA DWI MANDINI Masita Dwi Mandini Mannesa Masykur, Fauzan Abdurrahman Melianus Salakory Mochamad Indrawan Muhammad Dimyat Muhammad Sufwandika Wijaya Nur Aliyah Nurina Rachmita Nurwita Mustika Sari Pambudi, Bayu Prasetyo Permatasari, Ni Ketut Feny Pinoa, W S Pras, Prasetiawan Prastiwi, Agita Devi Rakuasa, Heinrich Raldi Hendro Toro Seputro Koestoer Ratna Saraswati Revi Hernina Rezky Yunita Rianputra, M. Rafli Ariq Ristiantri, Yusniar Rah Ayu Ristiantri, Yusniar Rah Ayu Rokhmatuloh Rokhmatuloh Rudy P. Tambunan Rudy P. Tambunan Rudy P. Tambunan Rudy P. Tambunan Rudy Parluhutan Tambunan Rudy Parluhutan Tambunan Rudy Parluhutan Tambunan Rudy Parluhutan Tambunan Rudy Parluhutan Tambunan Rudy Tambunan S Supriatna Suliyanti Pakpahan Supriatna Supriatna Supriatna Supriatna Tambunan, Rudy Tambunan, Rudy Parlindungan Tambunan, Rudy Parluhutan Tambunan, Rudy Parluhutan Taqyuddin, Taqyuddin Umaya, Nesya Desfarivana Wayan Gede Krisna Arimjaya Widiastuti, Rastika Widyastuti, Ratri