Investigations on the Impacts of Global Mass Density Model to Geoid Models in Java, Indonesia Quinoza Guvil, Dudy Darmawan Wijaya, Brian Bramanto, Kosasih Prijatna, Irwan Meilano, Cheinway Hwang, Rahayu Lestari, Arisauna Maulidyan Pahlevi, Bagas Triarahmadhana, Raa Ina Sidrotul Muntaha, Agustina Nur Syafarianty, Muhamad Irfan Geomatics, 2025 This study evaluates the impact of incorporating lateral mass density variations into geoid models for Java, Indonesia, aiming to enhance the accuracy of regional geoid determinations. Geoid models have traditionally used a constant density assumption; however, Java’s varied topography and geological complexity suggest that density variability may significantly influence geoid accuracy. Employing the Stokes–Helmert method combined with the remove–compute–restore (RCR) technique, we calculated geoid models using both constant density and laterally variable density from the UNB TopoDens model. The models were validated against GNSS/leveling data, showing that while lateral density variations had limited effects along flat topographic profiles, they introduced notable discrepancies in regions with considerable elevation changes. Specifically, variable density models exhibited discrepancies of up to 30 cm in regions with complex terrain, underscoring the importance of selecting appropriate density models for precise geoid computations in heterogeneous landscapes. Nonetheless, a comprehensive validation using geometric geoid models is required to confirm the accuracy improvements across the entire region.
Land cover identification using Pleiades satellite imagery by comparison of NDVI and BI method in Jatinangor, West Java Dwi Arini, Quinoza Guvil, Nur Wahidah Iop Conference Series Earth and Environmental Science, 2020 Land cover monitoring is important to maintaining human needs and ecological function balance that will be able to observe, analyse, and present land use form. Some methods that can be implemented to this case are Normalized Difference Vegetation Index (NDVI) and Bare soil Index (BI). Land cover identification is using Pleiades images in 2018 for Jatinangor area, with land cover classes were built in five class, divided by producer's and user's accuracy and validated with field survey results. Accuracy of NDVI method is 69.56% with kappa 0.57 also producer's accuracy is 73.94% water bodies, 84.88% built land, 67.37% open field, 98.79% crops field, and 98.79% vegetation. User's accuracy in a row for each class are 26.86% 82.78%, 20.01%, 76.15%, and 75.37%. The Accuracy of BI method is 69.17% with kappa 0.52. Producer's accuracy for each class is 73.28% water bodies, 70.71% land build, 52.83% open filed, 63,04% crop field, and vegetation with 81.29%. User's accuracy in a row for each class is 17.05%, 81.29%, 21.44%, 65.13%, and 88.54%. Validation of NDVI more fit in the field than BI that can be concluded NDVI has a good result than BI.
RECENT SCHOLAR PUBLICATIONS
Investigations on the Impacts of Global Mass Density Model to Geoid Models in Java, Indonesia ANSMI Quinoza Guvil, Dudy Darmawan Wijaya, Brian Bramanto ,Kosasih Prijatna ... Geomatics 5, 45 , 2025 2025 Citations: 2
Pemetaan Rute Trans Padang Berbasis Webgis D Arini, MN Bani, I Armi, Q Guvil, A Fernando Innovative: Journal Of Social Science Research 3 (3), 5490-5502 , 2023 2023
Monitoring of Land Surface Change in Padang City Using Dinsar Sentinel-1a Method QG Desi Syafriani, Saiyidinal Fikri JOURNAL OF APPLIED GEOSPATIAL INFORMATION 6 (Vol 6 No 2 2022), https … , 2022 2022 Citations: 5
Pemetaan Sebaran Lahan Terbangun di Kawasan Sempadan Pantai Kota Padang Menggunakan Citra Resolusi Tinggi DM Driptufany, A Kusuma, Q Guvil EL-JUGHRAFIYAH 2 (2), 87-92 , 2022 2022 Citations: 2
Flood management based on the potential urban catchments case study Padang city DM Driptufany, Q Guvil, D Syafriani, D Arini Sumatra Journal of Disaster, Geography and Geography Education 5 (1), 49-54 , 2021 2021 Citations: 5
Land cover identification using Pleiades satellite imagery by comparison of NDVI and BI method in Jatinangor, West Java D Arini, Q Guvil, N Wahidah IOP Conference Series: Earth and Environmental Science 500 (1), 012007 , 2020 2020 Citations: 11
Ekstraksi Normalized Difference Vegetation Index (NDVI) pada Citra Landsat 8 Untuk Identifikasi Ruang Terbuka Hijau di Kawasan Resapan Air Kota Padang MS Dwi Marsiska Driptufany, Quinoza Guvil SEMINAR NASIONAL PENGINDERAAN JAUH 2019 6 (1), 48 , 2019 2019
Aplikasi sistem informasi geografis untuk estimasi sebaran daerah potensi resapan air kota padang DM Driptufany, Q Guvil, S Ramadhan Jurnal Momentum ISSN, 8-14 , 2019 2019 Citations: 3
S, M.(2019). Ekstraksi Normalized Difference Vegetation Indeks (NDVI) pada Citra Landsat 8 Untuk Identifikasi Ruang Terbuka Hijau di kawasann Resapan Air Kota Padang DM Driptufany, Q Guvil Seminar Nasional Penginderaan Jauh 6 (1), 48-53 , 2019 2019 Citations: 4
Analisis potensi daerah resapan air Kota Padang Q Guvil, DM Driptufany, S Ramadhan Seminar Nasional Geomatika 3 (671), 2018.3-0.1025 , 2019 2019 Citations: 9
Analisis Kinerja Ruas Jalan Akibat On–Street Parking System Pasca Pemasangan Alat Meter Parkir (Studi Kasus Ruas Jalan Permindo Kota Padang) A Roza, Q Guvil, RB Birman Jurnal Teknik Sipil Institut Teknologi Padang 5 (2), 62-76 , 2018 2018 Citations: 5
Deskriptif Karakteristik Ruang Parkir Pasca Penggunaan Mesin Meter Parkir (Studi Kasus: Ruas Jalan Permindo Kota Padang) Q Guvil, RB Birman, A Roza Jurnal Ilmiah Rekayasa Sipil 15 (1), 45-52 , 2018 2018 Citations: 2
Analisis Harmonik Pasang Surut untuk Menghitung Nilai Muka Surutan Peta (Chart Datum) Stasiun Pasut Sibolga I Khasanah, S Wirdinata, Q Guvil Seminar Nasional Strategi Pengembangan Infrastruktur 3, 243-249 , 2017 2017 Citations: 13
Kestabilan Model Epidemi Dengan Laju Insidensi Jenuh Stability of a Epidemic Model with Saturated Incidence RT Putra, Q Guvil 2015
PELABELAN 0-ANTI AJAIB 2-ANTI AJAIB UNTUK GRAF TANGGA Lmn G QUINOZA Universitas Andalas , 2011 2011
MOST CITED SCHOLAR PUBLICATIONS
Analisis Harmonik Pasang Surut untuk Menghitung Nilai Muka Surutan Peta (Chart Datum) Stasiun Pasut Sibolga I Khasanah, S Wirdinata, Q Guvil Seminar Nasional Strategi Pengembangan Infrastruktur 3, 243-249 , 2017 2017 Citations: 13
Land cover identification using Pleiades satellite imagery by comparison of NDVI and BI method in Jatinangor, West Java D Arini, Q Guvil, N Wahidah IOP Conference Series: Earth and Environmental Science 500 (1), 012007 , 2020 2020 Citations: 11
Analisis potensi daerah resapan air Kota Padang Q Guvil, DM Driptufany, S Ramadhan Seminar Nasional Geomatika 3 (671), 2018.3-0.1025 , 2019 2019 Citations: 9
Monitoring of Land Surface Change in Padang City Using Dinsar Sentinel-1a Method QG Desi Syafriani, Saiyidinal Fikri JOURNAL OF APPLIED GEOSPATIAL INFORMATION 6 (Vol 6 No 2 2022), https … , 2022 2022 Citations: 5
Flood management based on the potential urban catchments case study Padang city DM Driptufany, Q Guvil, D Syafriani, D Arini Sumatra Journal of Disaster, Geography and Geography Education 5 (1), 49-54 , 2021 2021 Citations: 5
Analisis Kinerja Ruas Jalan Akibat On–Street Parking System Pasca Pemasangan Alat Meter Parkir (Studi Kasus Ruas Jalan Permindo Kota Padang) A Roza, Q Guvil, RB Birman Jurnal Teknik Sipil Institut Teknologi Padang 5 (2), 62-76 , 2018 2018 Citations: 5
S, M.(2019). Ekstraksi Normalized Difference Vegetation Indeks (NDVI) pada Citra Landsat 8 Untuk Identifikasi Ruang Terbuka Hijau di kawasann Resapan Air Kota Padang DM Driptufany, Q Guvil Seminar Nasional Penginderaan Jauh 6 (1), 48-53 , 2019 2019 Citations: 4
Aplikasi sistem informasi geografis untuk estimasi sebaran daerah potensi resapan air kota padang DM Driptufany, Q Guvil, S Ramadhan Jurnal Momentum ISSN, 8-14 , 2019 2019 Citations: 3
Investigations on the Impacts of Global Mass Density Model to Geoid Models in Java, Indonesia ANSMI Quinoza Guvil, Dudy Darmawan Wijaya, Brian Bramanto ,Kosasih Prijatna ... Geomatics 5, 45 , 2025 2025 Citations: 2
Pemetaan Sebaran Lahan Terbangun di Kawasan Sempadan Pantai Kota Padang Menggunakan Citra Resolusi Tinggi DM Driptufany, A Kusuma, Q Guvil EL-JUGHRAFIYAH 2 (2), 87-92 , 2022 2022 Citations: 2
Deskriptif Karakteristik Ruang Parkir Pasca Penggunaan Mesin Meter Parkir (Studi Kasus: Ruas Jalan Permindo Kota Padang) Q Guvil, RB Birman, A Roza Jurnal Ilmiah Rekayasa Sipil 15 (1), 45-52 , 2018 2018 Citations: 2
Pemetaan Rute Trans Padang Berbasis Webgis D Arini, MN Bani, I Armi, Q Guvil, A Fernando Innovative: Journal Of Social Science Research 3 (3), 5490-5502 , 2023 2023
Ekstraksi Normalized Difference Vegetation Index (NDVI) pada Citra Landsat 8 Untuk Identifikasi Ruang Terbuka Hijau di Kawasan Resapan Air Kota Padang MS Dwi Marsiska Driptufany, Quinoza Guvil SEMINAR NASIONAL PENGINDERAAN JAUH 2019 6 (1), 48 , 2019 2019
Kestabilan Model Epidemi Dengan Laju Insidensi Jenuh Stability of a Epidemic Model with Saturated Incidence RT Putra, Q Guvil 2015
PELABELAN 0-ANTI AJAIB 2-ANTI AJAIB UNTUK GRAF TANGGA Lmn G QUINOZA Universitas Andalas , 2011 2011
