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All Journal Journal of Food and Pharmaceutical Science Indonesian Journal of Geography Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Journal of Geoscience, Engineering, Environment, and Technology JURNAL ILMIAH GEOMATIKA AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Elipsoida : Jurnal Geodesi dan Geomatika BHUMI: Jurnal Agraria dan Pertanahan JGISE-Journal of Geospatial Information Science and Engineering Jurnal Pengabdian dan Pengembangan Masyarakat Journal of Food and Pharmaceutical Sciences Geoid - Journal of Geodesy and Geomatics Jurnal Pertanahan
Heliani, Leni Sophia
Departemen Teknik Geodesi, Fakultas Teknik, Universitas Gadjah Mada
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Perbandingan Pergerakan Titik Pantau Deformasi Kepulauan Sangihe Menggunakan Metode Perhitungan Periodik dan Simultan Berdasarkan Data GNSS Tahun 2014, 2015, dan 2016 Fauzi, Muhammad Arsyad; Heliani, Leni Sophia
Jurnal Geospasial Indonesia Vol 3, No 1 (2020): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.53068

Abstract

The study of deformation monitoring point movement of Sangihe Islands was conducted using the GNSS measurement methods. One of the factor that determines the accuracy of the deformation monitoring is the utilized data processing methods. Therefore, this research analyze the comparison of deformation monitoring point movement of Sangihe Islands using periodic and simultaneous GNSS data processing methods. This research used three observations epochs of GNSS, i.e. 2014, 2015 and 2016. The observational data were processed using GAMIT/GLOBK software that tied to ITRF 2014 to produce coordinates and their accuracy. Based on the coordinate data and its accuracy, the velocity of movements calculation and their accuracy was done using the periodic and simultaneous methods. Based on the periodic method, the velocity of the SGH1 point on the N component is -1,11 ± 2,72 mm/year, on the E component is 9,21 ± 4,17 mm/year, and on the U component is -15,02 ± 50,64 mm/year, while the velocity of the SGH3 point on the N component is -4,93 ± 1,56 mm/year, on the E component is 16,50 ± 2,47 mm/year, and on the U component is -6,69 ± 19,42 mm/year. Based on the simultaneous method, the velocity of the SGH1 point on the N component is -1,56 ± 1,25 mm/year, on the E component is 9,40 ± 1,55 mm/year, and on the U component is -11,54 ± 5,83 mm/year, while the velocity of the SGH3 point on the N component is -5,18 ± 0,88 mm/year, on the E component is 16,91 ± 1,10 mm/year, and on the U component is -2,84 ± 3,49 mm/year. This research proves the hypothesis that the simultaneous GNSS data calculation results in higher accuracy than the periodic method.
GPS-DERIVED SECULAR VELOCITY FIELD AROUND SANGIHE ISLAND AND ITS IMPLICATION TO THE MOLUCCA SEA SEISMICITY Heliani, Leni Sophia; Pratama, Cecep; Parseno, Parseno; Widjajanti, Nurrohmat; Lestari, Dwi
GEOMATIKA Vol 26, No 2 (2020)
Publisher : Badan Informasi Geospasial in Partnership with MAPIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24895/JIG.2020.26-2.1199

Abstract

Sangihe-Moluccas region is the most active seismicity in Indonesia. Between 2015 to 2018 there is four M6 class earthquake occurred close to the Sangihe-Moluccas region. These seismic active regions representing active deformation which is recorded on installed GPS for both campaign and continuous station. However, the origin of those frequent earthquakes has not been well understood especially related to GPS-derived secular motion. Therefore, we intend to estimate the secular motion inside and around Sangihe island. On the other hand, we also evaluate the effect of seismicity on GPS sites. Since our GPS data were conducted on yearly basis, we used an empirical global model of surface displacement due to coseismic activity. We calculate the offset that may be contained in the GPS site during its period. We remove the offset and estimate again the secular motion using linear least square. Hence, in comparison with the secular motion without considering the seismicity, we observe small change but systematically shifting the motion. We concluded the seismicity in the Molucca sea from 2015 to 2018 systematically change the secular motion around Sangihe Island at the sub-mm level. Finally, we obtained the secular motion toward each other between the east and west side within 1 to 5.5 cm/year displacement.
Increased Value Added of Tuna Flakes (By-Product) from Steak Processing Through Development of Halal Commercial Food Products (Tuna Topping Spaghetti) Latif Sahubawa; Ustadi; Leni Sophia Heliana; Rosdiana
Journal of Food and Pharmaceutical Sciences Vol 9, No 2 (2021): J.Food.Pharm.Sci
Publisher : Institute for Halal Industry and System (IHIS) Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfps.1911

Abstract

Yellowfin tuna is one of Indonesia's main export commodities, its meat contains high protein and can be processed into a variety of commercial food products. In the processing of loin, fillet and tuna steak, ± 10% of flaked meat is produced which can be used for processing commercial products. Spaghetti is one of the commercial products that is easily processed with raw materials and additives that are cheap and easy to obtain as well as halal and thoyib. The raw materials used are tuna flakes, spaghetti noodles and seasonings. The research objective was to analyze the chemical composition of tuna flakes and tuna topping spaghetti as well as the added value and level of consumer preference. This research uses laboratory methods, the percentage of additional selling value and consumer preferences. Proximate chemical composition of tuna flakes, namely: water content (74.80 - 75.25%); protein (16.35 - 17.00%); fat (1.43 - 1.50%); minerals (5.38 - 5.45%); carbohydrates (0.65 - 0.80%). Chemical composition of tuna topping spaghetti, namely: water content (62.73 - 69.13%); protein (7.08 - 8.34%); fat (0.42 - 0.76%); minerals/ash (0.93 - 1.16%) and carbohydrates (24.41 - 25.54%). The added value of tuna flakes in the processing of tuna topping spaghetti for two packages of spaghetti noodles (18 portions) is Rp. 147,355 (80.79%). The level of consumer preference (25 panelists) towards the visual value of tuna topping spaghetti is “very like” (76.0%) and “like” (24%); smell values, namely "really like" (72.0%) and "like" (28%); the value of taste, namely "really like" (80.0%) and "like" (20%); Texture values are “really like” (80.0%) and “like” (20%) and taste values are “really like” (76.0%) and “like” (24%).
Determination of a Local Hybrid Geoid as a Height Reference System for 3D Cadastre Margaretha Elya Lim Putraningtyas; Leni Sophia Heliani; Nurrohmat Widjajanti; Trias Aditya
Indonesian Journal of Geography Vol 53, No 2 (2021): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.55219

Abstract

Use and development of vertical building(s) on land parcel(s) have been a common progress to many urban landscapes around the world. 3D cadastre has been a research area that involves legal, technical and institutional assessments to the use and development of vertical buildings. Initial Land Registration of 3D cadastre objects require a representative geometry to determine the legal boundaries of 3D objects. For that purpose, a height reference that is used to define 3D geometries of registered 3D cadastre objects is important. This study focuses in determining a height reference system by developing a local hybrid geoid for the representation of 3D cadastre. The local hybrid geoid was developed by fitting the gravimetric to the geometric geoid.  Four strategies were utilized, based on the combination of GGM’s SGG-UGM-1 and GO_CONS_GCF_2_SPW_R5, Remove-Compute-Restore method and control point distribution for geoid fitting. Based on comparison with geometric geoid at six independent control points, the local hybrid geoid from strategy 3 produces mean difference of 0.354 m, accuracy of 0.137 m and increased level of closeness of 86%, which is further applied as an alternative reference surface in 3D cadastre.
SISTEM TINGGI DALAM REALISASI KADASTER 3D DI INDONESIA: TANTANGAN, PERMASALAHAN DAN ALTERNATIF SOLUSI Leni S Heliani; M. Ellya Putriningtias; Nurrohmat Widjajanti
BHUMI: Jurnal Agraria dan Pertanahan No. 38 (2013)
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat, Sekolah Tinggi Pertanahan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (600.869 KB) | DOI: 10.31292/jb.v1i38.170

Abstract

One important componentin the3Dcadastral system isthe definition of height component. The height of a cadastralobjectis the height above a certain height reference field. Based on theconceptandits use, there aremany height reference fields.Each reference field will have a certain effect on the type of height system and on the corresponding precision. Theabsoluteheightisdefinedin reference to thenationalheight reference, which provides certaintyandcleargeometricandtopologicalrelationsfor3Dcadastralobjects. However, the ideal nationalheight reference field,in this case precisegeoidmodels has not been definedfor thewhole of Indonesia.An alternativesolution to the problem uses a definition ofalocalgeoidmodel or the use ofa high-resolutionglobalgeoidmodel, the EGM2008. In the implementation, the precision level ofthe available geoid model and the required precision level of cadastral objects height become the basis for the selection of ageoid model. The use ofthe geoid modelasthe height reference has also an impact on theoptimalization/development of theapplication of BPNCORSstationsthatcan beusedas ahorizontal as well as a verticalreferencepointin3Dcadastralmapping.Keywords: 3D cadastre, cadastral mapping, geoid.
EVALUASI MODEL DATA SATELIT GRACE UNTUK ESTIMASI TOTAL SIMPANAN AIR DI WILAYAH LAHAN GAMBUT PULAU KALIMANTAN Rendra Fauzi; Leni Sophia Heliani
Elipsoida : Jurnal Geodesi dan Geomatika Vol 2, No 01 (2019): Volume 02 Issue 01 Year 2019
Publisher : Department of Geodesy Engineering, Faculty of Engineering, Diponegoro University,Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (415.772 KB) | DOI: 10.14710/elipsoida.2019.4859

Abstract

Simpanan Air Tanah (TWS) merupakan salah satu komponen utama siklus hidrologi di permukaan bumi. Pada penelitian ini, nilai TWS diestimasi berdasarkan data gayaberat dari satelit GRACE, dengan studi kasus di wilayah lahan gambut pulau Kalimantan. Model data satelit GRACE yang digunakan ada 3 yakni CSR, GFZ, dan JPL dengan data akuisisi dari 2002 hinga 2017. Proses perhitungan menggunakan toolbox GRAMAT yang dikembangkan oleh Wei Feng dengan proses meliputi hitungan nilai Tinggi Air Rerata (EWH), reduksi efek ocean-leakage, serta analisis harmonik meliputi amplitudo, fase, dan perubahan tahunan. Dari hasil diperoleh informasi bahwa perubahan nilai EWH yang dihasilkan oleh tiap model data bernilai positif, dengan nilai berkisar antara 0.474 – 0.676 mm tiap tahunnya. Matrik korelasi antar model menunjukkan nilai korelasi di atas 0.81, hal ini berarti semua model memberikan hasil yang relatif sama. Berdasarkan nilai ketelitian dari simpangan baku maka model data  yang paling cocok untuk perhitungan simpanan air lahan gambut adalah model data JPL.
GPS Technology Implementation for Sangihe Islands' Movement Monitoring in 2017-2019 Hilmiyati Ulinnuha; Dwi Lestari; Leni Sophia Heliani; Nurrohmat Widjajanti; Cecep Pratama; Parseno Parseno; Krishna Fitranto Nugroho
Jurnal Geospasial Indonesia Vol 2, No 2 (2019): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.51033

Abstract

Sangihe Islands belong to a complex tectonic area at the subduction of the Eurasian plate and the Philippine Sea. Sangihe subduction zones are complex subduction zone, so that there is a need for continuous movement monitoring. Previous research had been carried out to monitor movement of the Sangihe subduction zone, but no monitoring has been done in 2019. Therefore, this study aims to monitor movement of Sangihe subduction zones with the latest observation data.This study aims to obtain velocity of Sangihe Islands plate movement during 2017 to 2019. Observation was performed using 3 monitoring control points for 7 days in 2019. While observation data from 2017 to 2018 were obtained from previous studies. Observations was carried out using GNSS differential method technology. Loosely constrained of weighted parameter was performed in least square adjustment of GNSS data daily processing, while Kalman Filtering algorithm applied for combining multiyear GNSS data to estimate the velocity refer to ITRF 2014 using GAMIT/GLOBK.This study indicates that Sangihe Islands has horizontal movement to the Southeast with velocity vector of 1 to 2.16 cm/year. This results confirm the previous studies in that area.
Analysis of Sangihe Islands Movements derived from Recent GPS Observation Krishna Fitranto Nugroho; Leni Sophia Heliani
Jurnal Geospasial Indonesia Vol 2, No 2 (2019): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.51146

Abstract

Sangihe Islands is one of the districts located in the border region of the Republic of Indonesia precisely located in North Sulawesi Province which borders with the Philippines. Sangihe subduction zone is a subduction between the Sangihe plate and the Maluku sea plate. (Di Leo, et al., 2012). This situation causes the Sangihe Islands region to be very prone to earthquake and others disasters, so mitigation efforts are needed to minimize casualties and losses in other material forms. One of these efforts is mapping the potential of earthquakes through Geodynamic studies which are represented at the point of deformation control. This study is using four times GNSS observations epoch 2015, 2016, 2017 and 2018 tied to ITRF 2014. The data used for 3D deformation analysis with the multiepoch method to calculate the movement speed of the Sangihe plate and simultaneous tectonic plate strain observation. The results of this study are the coordinates and accuracy values of monitoring point also the plate movement speed and annual tectonic plate strain values. The movement speed of the Sangihe plate is SGH1 point is having horizontal deformation of 9.88 mm / year to the southeast and vertical deformation descend by 58.66 mm/year. SGH3 point is having horizontal deformation of 12.74 mm/year to the southeast and vertical deformation descend by 18.51 mm/year. SGH4 point is having horizontal deformation of 19.04 mm/year to the southeast and vertical deformation descend by 5.27 mm/ year. This research also proves the hypothesis of a change in the volume of the Sangihe Islands tectonic plate based on the values of normal strain parameters and shear strain in the fraction of 10-6 to 10-4 strains.
Perbandingan Pergerakan Titik Pantau Deformasi Kepulauan Sangihe Menggunakan Metode Perhitungan Periodik dan Simultan Berdasarkan Data GNSS Tahun 2014, 2015, dan 2016 Muhammad Arsyad Fauzi; Leni Sophia Heliani
Jurnal Geospasial Indonesia Vol 3, No 1 (2020): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.53068

Abstract

The study of deformation monitoring point movement of Sangihe Islands was conducted using the GNSS measurement methods. One of the factor that determines the accuracy of the deformation monitoring is the utilized data processing methods. Therefore, this research analyze the comparison of deformation monitoring point movement of Sangihe Islands using periodic and simultaneous GNSS data processing methods. This research used three observations epochs of GNSS, i.e. 2014, 2015 and 2016. The observational data were processed using GAMIT/GLOBK software that tied to ITRF 2014 to produce coordinates and their accuracy. Based on the coordinate data and its accuracy, the velocity of movements calculation and their accuracy was done using the periodic and simultaneous methods. Based on the periodic method, the velocity of the SGH1 point on the N component is -1,11 ± 2,72 mm/year, on the E component is 9,21 ± 4,17 mm/year, and on the U component is -15,02 ± 50,64 mm/year, while the velocity of the SGH3 point on the N component is -4,93 ± 1,56 mm/year, on the E component is 16,50 ± 2,47 mm/year, and on the U component is -6,69 ± 19,42 mm/year. Based on the simultaneous method, the velocity of the SGH1 point on the N component is -1,56 ± 1,25 mm/year, on the E component is 9,40 ± 1,55 mm/year, and on the U component is -11,54 ± 5,83 mm/year, while the velocity of the SGH3 point on the N component is -5,18 ± 0,88 mm/year, on the E component is 16,91 ± 1,10 mm/year, and on the U component is -2,84 ± 3,49 mm/year. This research proves the hypothesis that the simultaneous GNSS data calculation results in higher accuracy than the periodic method.
Penentuan Posisi Titik-Titik Pemantauan Banjir Di Desa Segoroyoso, Kecamatan Pleret, Kabupaten Bantul, Provinsi DIY Hilmiyati Ulinnuha; Aris Sunantyo; Bilal Ma'ruf; Parseno Parseno; Nurrohmat Widjajanti; Leni Sophia Heliani; Dwi Lestari; Dedi Atunggal; Cecep Pratama
Jurnal Pengabdian dan Pengembangan Masyarakat Vol 4, No 2 (2021): NOVEMBER 2021
Publisher : Pengabdian dan Pengembangan Masyarakat Sekolah Vokasi UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jp2m.67933

Abstract

Desa Segoroyoso merupakan wilayah yang rawan terhadap adanya bencana alam seperti gempa bumi, banjir, dan tanah longsor. Bencana alam yang sering dialami di Desa Segoroyoso adalah banjir Sungai Opak yang berdampak menggenangi pemukiman warga di Dusun Karanggayam dan Dusun Dahromo I. Sering terjadinya banjir di Desa Segoroyoso membutuhkan penanganan dan mitigasi bencana. Sebagai langkah awal mitigasi banjir, diperlukan titik pantau berupa tanda dilapangan yang mudah diidentifikasi oleh warga tentang elevasi air yang mulai menggenang. Oleh karena itu kegiatan ini bertujuan untuk menentukan posisi horizontal dan vertikal titik pemantauan banjir di Desa Segoroyoso. Titik pemantauan banjir ini diharapkan akan menjadi panduan para warga tentang kemungkinan terjadinya banjir. Posisi horizontal titik pemantau banjir ini akan diukur menggunakan instrumen Global Navigation Satelite System (GNSS) dan posisi vertikal didapatkan melalui pengukuran sipat datar. Hasil dari kegiatan ini adalah koordinat horizontal titik pantau dalam SRGI 2013 serta tinggi orthometriknya.
Co-Authors Ahmad Sarwadi Ahmad Sarwadi, Ahmad Al Shida Natul Aqso, Muhammad Raihan Aris Sunantyo Bagas Triarahmadhana Bilal Ma'ruf Cecep Pratama Dedi Atunggal Dewanto, Bondan Galih Dwi Lestari Dwi Lestari Dwi Lestari Dwi Lestari Fauzi, Muhammad Arsyad Hadianti, Atrida Hidayat Panuntun Juswono Budi Setiawan Krishna Fitranto Nugroho Krishna Fitranto Nugroho Latif Sahubawa Listyana, Deswita M. Ellya Putriningtias Margaretha Elya Lim Putraningtyas Muhammad Arsyad Fauzi Noviantara, Hendra Novianti, Suci Tresna Nurrohmat Widjajanti Nurrohmat Widjajanti Parseno Parseno Parseno Parseno Parseno Parseno Parseno Parseno Partosuwiryo1, Suwarman Pratama, Cecep Pratama, Rizki Febri Putraningtyas, Margaretha Elya Lim Putri, Citra Kumala Rendra Fauzi Rosdiana Sanjaya, Darmawan Dwi Setiawan, Juswono Budi Suci Tresna Novianti Suwarman Partosuwiryo1 Suyanta Suyanta Trias Aditya Ulinnuha, Hilmiyati Ulinnuha, Hilmiyati Ustadi Widjajanti , Nurrohmat Widy Putra Widya Nayati Widya Nayati Wiwit Suryanto