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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Geosaintek Jurnal Teknik Jurnal Kridatama Sains dan Teknologi
Niswah Selmi Kaffa
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Ground motion vulnerability analysis on road geometric based on remote sensing Kaffa, Niswah Selmi; Sukojo, Bangun Muljo
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 19, No 3: June 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v19i3.14796

Abstract

Based on spatial plans document of South Sumatera in 2005 – 2019, the study area (South Ogan Komering Ulu, South Sumatera) was categorized as middle–high ground motion vulnerability. This analysis was aimed to determine ground motion vulnerable points along the Sukabumi Sub-district, South Ogan Komering Ulu District, South Sumatera to Tigadihaji Damsite road geometric plan based on remote sensing. The contribution of this research is to determine the location on road geometry that needs slope reinforcement as a mitigation effort. The method used in this analysis was the deterministic method based on ground motion parameters issued by Center for Volcanology and Geological Disaster Mitigation (PVMBG) in 2015 stated in the National Disaster Management Agency (BNPB) Indonesian Disaster Risk (RBI) document in 2016. The eight parameters used were the justification of remote sensing–based processing methods. The data used in this analysis were Hydrology and Geology Final Reports issued by PT Virama Karya (Persero) consultant, Landsat 8 Satellite Imagery band 5 6 7, Digital Elevation Model (DEM), and Geographic Information System (GIS) of South Sumatera. Based on the analysis, it was proven that the study area was categorized as middle–high ground motion vulnerability with the points classified having high ground motion were station 1+225, 1+250, 1+325, 1+350, 1+375, 1+425, 1+450, 1+700, 1+750, 1+775, 1+800, 1+950, and 1+975.
Perbandingan Nilai Kedalaman Relatif Sungai Brantas Kabupaten Jombang dengan Perhitungan Algoritma Van Hengel and Spitzer Citra Sentinel-2 dan Digital Elevation Model (DEM) Niswah Selmi Kaffa; Muchammad Masykur; Yoga Kencana Nugraha
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 21 No 2 (2022): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol21no2.475

Abstract

Shallow water relative depth can be gained from the Digital Elevation Model (DEM). As science develops, methods are developed to gain the relative depth one is by processing the Sentinel-2 image using Van Hengel and Spitzer algorithm. The authors aim to compare the relative depth gained from the Sentinel-2 image using the Van Hengel and Spitzer algorithm to the relative depth gained from DEM. The data needed are orthorectified Sentinel-2 level 1C images downloaded from the Earth Explorer page and DEM downloaded from the Tanah Air page. Sentinel-2 image is then corrected atmospherically and radiometrically to get its radian value then processed using the Van Hengel and Spitzer algorithm. The sample points are spread at 25 meters intervals along the Jombang regency Brantas River. This study only compares the computational calculation therefore no field validation is carried out. Sentinel-2 Van Hengel and Spitzer provides an average relative depth of 16.35 m and DEM provides an average relative depth of 17.98 m with the determination coefficient (correlation value) of the two data is 6.52%. The low correlation is due to the high sediment content in the water column of Brantas River, causing the bias in the image.
UTILIZING POST PROCESSING KINEMATIC (PPK) UNMANNED AERIAL VEHICLE (UAV) TO ACCELERATE DETAILED LAND MAPPING Regita Faridatunisa Wijayanti; Niswah Selmi Kaffa; Taufik Kusetiyohadi; Hesekiel Sijabat; Angga Pratama Putra; Septa Erik Prabawa; Yunus Susilo
Jurnal Geosaintek Vol 9, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v9i3.18657

Abstract

The accelerate of land registration is important to solve the land disputes. Start from 2022, BPN utilize UAV to make base maps quickly. One of photo map criteria is high horizontal accuracy of <0.5 meter by using Circular Error 90% (CE90). This research analyzes the effectiveness of PPK method on UAV survey to accelerate detailed land mapping in Indonesia. UAV fixed wing Vertical Takeoff and Landing (VTOL) model with Sony ILCE-6000 camera flown on 9.46 km2 areas, flying on 244 meters, and using 8 Ground Control Points (GCP) in Muktisari Village, Ciamis. First, UAV camera coordinates processed to obtain photo mosaic. Furthermore, geometric correction processed with GCP to obtain orthophoto for each mosaic photo. The UAV without PPK produced CE90: 0.02 meter (RMSE: 0.013 meter), whereas the UAV using PPK produced CE90: 0.008 meter (RMSE: 0.005 meter). According to the CE90 value on UAV showed resulting photo map included in 1:1000 scale aerial photo map in class 1. However, this research showed the UAV using PPK is 2.5 times more accurate. In conclusion, PPK can improve the performance of UAV to increase the photo map geometry accuracy. Hence, UAV using PPK are recommended to accelerate detailed land mapping in Indonesia.
The Analysis of GCP Correction Toward GNSS-PPK for LandRegistration Base-map in Muktisari Village, Cipaku District, Ciamis Regency Niswah Selmi Kaffa; Regita Faridatunisa Wijayanti; Taufik Kusetiyohadi; Hesekiel Sijabat; Tedy Pranadiarso; Hilma Wasilah Robbani; Gholiqul Amrodh Alawy
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 23 No 2 (2024): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol23no2.571

Abstract

The Comprehensive Systematic Land Registration Program (PTSL) main requirement is land registration map in a scale of 1:1000 and horizontal accuracy (CE90) class 1 of 0,3 meters. Global Navigation Satellite System–Post Processing Kinematic (GNSS-PPK) provides good accuracy without Ground Control Point (GCP) correction, thus reducing cost and data acquisition time. GNSS-PPK without GCP correction is considered accurate in areas <500 meters elevation. This research aims to determine the GCP correction importance for photo accuracy in PPK process. This study analyzes aerial photo accuracy with and without GCP correction in areas with elevations from 200 to 430 meters. The data required are aerial photos, coordinates in RINEX files, Digital Terrain Model (DTM), and 8 GCP points. Coordinate files are calculated using the PPK method then used for photo correction. Photos are processed with and without GCP correction. Photo without GCP correction has a significant deviation than photo with GCP correction and does not meet the CE90 requirements. The accuracy has a negative correlation with an elevation of -0,041 without GCP and -0,76 with GCP. This study proves that GNSS-PPK method still requires GCP and it is not proven deviation in data without the GCP correction is directly proportional to elevation.
Analisis Potensi Bahaya Alkalinitas dan Salinitas pada Mata Air untuk Kebutuhan Air Irigasi di Kota Batu Pranantya, Vanadani; Kartikasari, Adelia Nur Isna; Ardiansyah, Ahmad Farid; Kaffa, Niswah Selmi
JURNAL KRIDATAMA SAINS DAN TEKNOLOGI Vol 6 No 02 (2024): JURNAL KRIDATAMA SAINS DAN TEKNOLOGI
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/kst.v6i02.1359

Abstract

Batu City is an area with abundant water spring potential. Springs are an essential part of the air supply for human domestic needs, industrial activities, and agricultural irrigation activities. Springs in Batu City are mostly used as irrigation water sources, where 15 springs spread across three sub-districts that cover Bumiaji District, Batu District, Junrejo District in Batu City use springs as irrigation water sources. The use of springs as a source of irrigation water, in addition to being considered based on quantity, also needs to be considered for its quality. The quality of water irrigation can be reviewed based on the potential alkalinity hazard (SAR) and potential salinity hazard (EC) values. The values of SAR and EC are explained using the Wilcox Graph. There are 15 springs in Batu City that have EC values in the range of 297.2 µS/cm – 748.3 µS/cm and are classified into Class C2 or moderate salinity hazard potential and SAR in the range of 0.0068 – 0.0294 included in the Class S1 classification or low alkalinity hazard potential. The results of the Wilcox Graph analysis show that the water quality of the 15 springs is in Class C2 – S1 with low alkalinity hazard potential and moderate salinity hazard potential. The results of the Wilcox Graph show that the 15 springs in Batu City that are used as irrigation sources are suitable for use as sources of water irrigation
Pengaruh Mobilitas Masyarakat terhadap Tingkat Penambahan Jumlah Kasus COVID-19 di Surabaya Alawy, Gholiqul Amrodh; Achmad Wicaksono; Syaripin; Adelia Nur Isna Kartikasari; Niswah Selmi Kaffa
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 24 No 1 (2025): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol24no1.684

Abstract

Penelitian ini bertujuan untuk mengkaji dampak mobilitas penduduk dan kendaraan terhadap jumlah kasus COVID-19 di Surabaya serta menentukan jeda waktu (time lag) optimal antara pola mobilitas dan peningkatan kasus baru. Analisis regresi linier digunakan dengan variabel dependen (Yi) berupa jumlah harian kasus positif COVID-19 dan variabel independen (Xi) berupa data mobilitas. Data mobilitas ini dikumpulkan dari titik-titik transportasi utama di Surabaya, yaitu Stasiun Kereta Api Gubeng, Terminal Bus Purabaya, dan Gerbang Tol Waru Utama. Hasil penelitian menunjukkan bahwa terdapat pola peningkatan jumlah kasus COVID-19 yang sejalan dengan perubahan tingkat mobilitas masyarakat. Pada jeda waktu (lag) 0 hari, korelasi antara mobilitas dan kasus COVID-19 memiliki nilai koefisien determinasi (R²) sebesar 0,719, namun meningkat menjadi 0,753 ketika menggunakan jeda waktu 15 hari (lag = 15). Hal ini menunjukkan bahwa fluktuasi mobilitas masyarakat di Surabaya memiliki pengaruh yang lebih kuat terhadap jumlah kasus COVID-19 dalam rentang waktu 15 hari setelahnya. Model regresi linier yang dibangun melalui proses seleksi stepwise memperlihatkan bahwa tingkat mobilitas di Gerbang Tol Waru Utama menjadi variabel prediktor paling signifikan, menjadikannya faktor penting dalam memahami dinamika penyebaran COVID-19 di wilayah ini.
Co-Authors Achmad Wicaksono Adelia Nur Isna Kartikasari Angga Pratama Putra Ardiansyah, Ahmad Farid Bangun Muljo Sukojo, Bangun Muljo Gholiqul Amrodh Alawy Gholiqul Amrodh Alawy Hesekiel Sijabat Hesekiel Sijabat Hilma Wasilah Robbani Kartikasari, Adelia Nur Isna Muchammad Masykur Regita Faridatunisa Wijayanti Regita Faridatunisa Wijayanti Septa Erik Prabawa Syaripin Taufik Kusetiyohadi Taufik Kusetiyohadi Tedy Pranadiarso Vanadani Pranantya Yoga Kencana Nugraha Yunus Susilo