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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
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Physics Social Sciences

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A Comparison of Geologic Structure Detection of Sumatera Island Using Goce Satellite Gravity Data and Sgg-Ugm-2 Data Al Shida Natul; Leni Sophia Heliani
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 3 (2022): JGEET Vol 07 No 03 : September (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.3.8863

Abstract

GOCE gravity satellite data can be used for regional fault detection because the observation area is wide and not limited by area. In this study, GOCE satellite data is used to detect geological structures on the island of Sumatra, the results of which are used as the basis for disaster mitigation. GOCE data and SGG-UGM-2 were processed using the GOCE User Toolbox (GUT) software to produce a gravity disturbance map and a complete bouguer anomaly map. The GOCE obtained results were validated using the SGG-UGM-2 high-resolution gravity model data. The calculation results obtained that the gravity disturbance value from the GOCE data was around -140 to 200 mGal, while the value of the gravity disturbance from the SGG-UGM-2 data was around -180-300 mGal. The GOCE gravity disturbance map and the SGG-UGM-2 can detect the Subduction Trench, Mentawai Fault, and West Andaman Fault on Sumatra Island with negative values, while the Sumatran Fault Zone (SFZ) along Sumatra Island with positive values ​​in line with the presence of mountain ranges. The results of the SGG-UGM-2 data processing for the gravity disturbance are more detailed than GOCE because the SGG-UGM-2 data degree is higher than that of GOCE. GOCE complete bouguer anomaly value is around 40-560 mGal, while the value of complete bouguer anomaly SGG-UGM-2 is around 60-560 mGal. The complete bouguer anomaly maps from GOCE and SGG-UGM-2 can detect patterns from the Subduction Trench, Mentawai Fault, and West Andaman Fault but cannot clearly detect SFZ. The complete bouguer anomaly can also detect differences between oceanic and continental crust. The GOCE and the SGG-UGM-2 complete bouguer anomaly map show almost similar patterns and the ability to detect geological structures for sub and regional Sumatra Island. In addition, GOCE data detect geological structures more clearly than GRACE data.
Importance of Tropospheric Correction to C-band InSAR Measurements: Application in the 2018 Palu Earthquake Hidayat Panuntun; Leni Sophia Heliani; Wiwit Suryanto; Cecep Pratama
Indonesian Journal of Geography Vol 54, No 3 (2022): 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.68984

Abstract

Long-term InSAR-based observations are prone to atmospheric delay interference. The active-phase signals emitted and recorded back by sensors during imaging are easily disturbed by the electron content in the ionospheric layer and the water vapor content in the tropospheric layer. Given that the short wavelength of the C-band used by Sentinel-1 is more sensitive to tropospheric delay than to ionospheric delay, in this work, we utilized InSAR Sentinel-1 data to observe the postseismic deformation that occurred following the 2018 Palu earthquake and to evaluate the effect of tropospheric delay on the estimated interferogram time series. The cloud computation of Looking into Continent from Space with Synthetic Aperture Radar (LiCSAR) and LiCSBAS was used to generate interferograms and analyze the time series. Here the atmospheric delay was modeled by using Generic Atmospheric Correction Online Service (GACOS) and removed from the generated interferograms. Results showed that the annual velocity and cumulative line-of-sight (LOS) displacement were refined by correcting the atmospheric delay. Specifically, by applying GACOS, the standard deviation of the generated interferograms decreased by up to 76.6%. GNSS observations were utilized to verify the improvement due to the removal of tropospheric noise. We found that LOS displacement with GACOS correction better fitted the GNSS observation than LOS displacement without GACOS correction. Therefore, atmospheric correction plays an important role in long-term InSAR-based observations, especially in avoiding any bias in the interpretation of the estimated time series.
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%).
Peningkatan Jumlah dan Kompetensi Nelayan Melalui Program Sosialisasi dan Magang, di Kalurahan Poncosari, Srandakan Bantul di Yogyakarta Leni Sophia Heliani; Suwarman Partosuwiryo1; Juswono Budi Setiawan; Widya Nayati; Ahmad Sarwadi; Suyanta Suyanta
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 7 No 4 (2023): November
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v7i4.10550

Abstract

Pesisir DI Yogyakarta, Kalurahan Poncosari memiliki potensi sumberdaya perikanan dan kelautan  yang belum dioptimalkan, yang disebakan oleh kurangnya jumlah   dan   keterampilan nelayan.  Kegiatan Pengabdian masyarakat Desa Binaan melaksanakan pengembangan profesi nelayan bertujuan meningkatkan pengetahuan dan kemampuan masyarakat, terutama generasi muda, terkait profesi nelayan. Kegiatan yang dilakukan berupa sosialisasi profesi nelayan dan magang nelayan untuk menambah jumlah (regenerasi atau pengkaderan nelayan). Hasil kegiatan sosialisasi diikuti oleh sekiat 40 orang pemuda, yang terdiri dari nelayan muda, petani, penambang pasir dan karang taruna. Hasil kuisioner sosialisasi menunjukan pengetahuan dan ketertarikan peserta terhadap profesi nelayan meningkat. Sosialisasi dilanjutkan kegiatan magang nelayang yang diikuti oleh 7 peserta dan dilaksanakan selama 4 hari, dengan hasil peningkatan kemampuan sangat baik, dimana peserta magang telah memiliki 90% kemampuan yang ditargetkan, sehingga dapat di klasifikasi pada nelayan pemula, berupa adaptasi dengan pelayaran, peningkatan keberanian dan keterampilan  procedural pengoprasian dan penangkapan ikan dengan pendampingan
Pengaruh Densitas Topografi Terhadap Ketelitian Model Geoid: Studi kasus Pulau Sulawesi Heliani, Leni Sophia; Noviantara, Hendra
Jurnal Geospasial Indonesia Vol 7, No 2 (2024): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jgise.102122

Abstract

Penentuan model geoid teliti penting untuk mendapatkan tinggi ortometrik dari tinggi Global Navigation Satellite System (GNSS).   Salah satu faktor yang mempengaruhi ketelitian model geoid adalah densitas topografi. Umumnya, penentuan model geoid pada formula Stokes menggunakan densitas massa standar sebesar 2670 kg/m3. Namun, densitas topografi sesungguhnya  bervariasi. Saat ini, tersedia model densitas global, salah satunya yang dibuat University of New Brunswick (UNB) dengan resolusi 30”. Penelitian ini bertujuan untuk menganalisis pengaruh penggunaan densitas topografi dari densitas standar dan model global UNB terhadap ketelitian model geoid yang dihasilkan. Pemodelan geoid  menggunakan metode Kungliga Tekniska Högskolan (KTH), dengan studi kasus Pulau Sulawesi, salah satu pulau yang memiliki variasi topografi yang sangat tinggi. Hasil validasi menggunakan data co-site GNSS-levelling menunjukan perubahan ketelitian yang tidak signifikan pada level milimeter, untuk geoid menggunakan densitas standar (NStandar) dan model global UNB (NUNB). Nilai standar deviasi dan RMS dari model NStandar sebesar 12,65 cm. Sedangkan nilai standar deviasi dan RMS dari model NUNB sebesar 12,58 cm dan 12,59 cm. Hal ini dikarenakan titik-titik validasi terletak pada lokasi dengan topografi yang tidak terlalu bervariasi. Selanjutnya, dilakukan pendetailan hitung perbedaan nilai geoid NStandar dan NUNB, diperoleh selisih antara -20 s.d. 30 cm di wilayah pegunungan. Perbedaan dalam level desimeter ini menunjukan efek yang signifikan dari densitas topografi terhadap ketelitian geoid, sehingga tidak bisa diabaikan, terutama untuk wilayah dengan variasi topografi yang tinggi.
Institutionalizing Climate Change Adaptation and Mitigation Through Education in a Small Island Context: A Case Study of South Tabukan, Sangihe Islands Heliani, Leni Sophia; Hadianti, Atrida; Nayati, Widya; Dewanto, Bondan Galih; Putri, Citra Kumala; Aqso, Muhammad Raihan; Pratama, Rizki Febri; Listyana, Deswita; Sanjaya, Darmawan Dwi
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 11, No 2 (2025): June
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpkm.90903

Abstract

The Sangihe Islands Regency, one of Indonesia’s small and outermost island regions, has been increasingly affected by the impacts of climate change. Extreme weather events and high waves have contributed to a decline in both the quantity and quality of fish catches and agricultural yields, which are the primary sources of livelihood for many residents. However, the community’s understanding of climate change, including its causes, impacts, mitigation strategies, and adaptation measures, remains limited. In response, a comprehensiveand community capacity-building program was initiated, focusing on education and institutionalization related to climate change mitigation and adaptation. The initiative was structured around four action clusters: medical, agricultural, science and technology, and socio-humanities. These efforts resulted in the development of environmentally friendly systems for waste disposal, agriculture, capture fisheries, and water resource management. The initiative is expected to strengthen the foundational capacities of residents in South Tabukan, Sangihe Islands Regency, enabling them to independently and sustainably mitigate and adapt to the impacts of climate change.
Estimasi Potensi Gempa Tektonik di Wilayah Sesar Opak Berdasarkan Data Pengamatan GPS Ulinnuha, Hilmiyati; Lestari, Dwi; Widjajanti , Nurrohmat; Parseno, Parseno; Pratama, Cecep; Heliani, Leni Sophia; Novianti, Suci Tresna
GEOID Vol. 18 No. 1 (2022)
Publisher : Departemen Teknik Geomatika ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/geoid.v18i1.1752

Abstract

Yogyakarta merupakan daerah ring of fire dengan adanya wilayah-wilayah subduksi lempeng tektonik. Kondisi ini mengakibatkan tingginya potensi gempa tektonik di daerah Yogyakarta. Seperti pada tahun 2006, telah terjadi gempa tektonik dengan skala 6,3 Mw di Yogyakarta dan menimbulkan dampak negatif. Gempa ini disebabkan oleh aktivitas Sesar Opak. Berdasarkan penelitian sebelumnya, segmen patahan Sesar Opak tidak semua melepaskan energi, sehingga dimungkinkan berpotensi menimbulkan gempa tektonik besar di masa yang akan datang. Oleh karena itu, penelitian ini bertujuan untuk mengenalisis dan mengestimasi potensi gempa tektonik di sekitar wilayah Sesar Opak berdasarkan data pengamatan GPS. Penelitian ini juga mengestimasi maximum magnitude dan periode perulangan maximum magnitude tersebut. Data yang digunakan dalam penelitian ini adalah data pengamatan GPS pada titik-titik pantau Sesar Opak sejumlah 11 buah dari tahun 2016, 2017, dan 2018. Data pengamatan GPS diolah dengan perangkat lunak GAMIT/GLOBK. Data diolah dengan membagi area menjadi sebelah Timur dan sebelah Barat Sesar Opak. Selanjutnya, dilakukan perhitungan estimasi maximum magnitude dan periode perulangan maximum magnitude. Hasil dari pengolahan data GPS menunjukkan bahwa resultan kecepatan pergeseran horizontal titik pantau Timur Sesar Opak lebih besar dari pada titik pantau Barat Sesar Opak. Hal ini dapat mengindikasikan Timur Sesar Opak lebih aktif dari pada Barat Sesar Opak. Adanya pergeseran aktif ini dapat menimbulkan potensi gempat tektonik dikemudian hari. Selain itu, hasil estimasi maximum magnitude yang dapat terjadi di wilayah Sesar Opak adalah 6,5 Mw dengan periode perulangan maximum magnitude selama ± 60 tahun pada Segmen Utara dan selama ± 130 tahun pada Segmen Selatan. Namun hasil perhitungan estimasi ini masih perlu disempurnakan dengan dengan menambahkan data lain seperti seismik multitemporal.
Peningkatan Jumlah dan Kompetensi Nelayan Melalui Program Sosialisasi dan Magang, di Kalurahan Poncosari, Srandakan Bantul di Yogyakarta Heliani, Leni Sophia; Partosuwiryo1, Suwarman; Setiawan, Juswono Budi; Nayati, Widya; Sarwadi, Ahmad; Suyanta, Suyanta
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 7 No 4 (2023): November
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v7i4.10550

Abstract

Pesisir DI Yogyakarta, Kalurahan Poncosari memiliki potensi sumberdaya perikanan dan kelautan  yang belum dioptimalkan, yang disebakan oleh kurangnya jumlah   dan   keterampilan nelayan.  Kegiatan Pengabdian masyarakat Desa Binaan melaksanakan pengembangan profesi nelayan bertujuan meningkatkan pengetahuan dan kemampuan masyarakat, terutama generasi muda, terkait profesi nelayan. Kegiatan yang dilakukan berupa sosialisasi profesi nelayan dan magang nelayan untuk menambah jumlah (regenerasi atau pengkaderan nelayan). Hasil kegiatan sosialisasi diikuti oleh sekiat 40 orang pemuda, yang terdiri dari nelayan muda, petani, penambang pasir dan karang taruna. Hasil kuisioner sosialisasi menunjukan pengetahuan dan ketertarikan peserta terhadap profesi nelayan meningkat. Sosialisasi dilanjutkan kegiatan magang nelayang yang diikuti oleh 7 peserta dan dilaksanakan selama 4 hari, dengan hasil peningkatan kemampuan sangat baik, dimana peserta magang telah memiliki 90% kemampuan yang ditargetkan, sehingga dapat di klasifikasi pada nelayan pemula, berupa adaptasi dengan pelayaran, peningkatan keberanian dan keterampilan  procedural pengoprasian dan penangkapan ikan dengan pendampingan
Implementasi Data Tinggi Global Navigation Satellite System (GNSS) Continuously Operating Reference Stations (CORS) dalam Pengembangan Kadaster 3 Dimensi (3D) di Indonesia Putraningtyas, Margaretha Elya Lim; Heliani, Leni Sophia; Widjajanti , Nurrohmat
Jurnal Pertanahan Vol 12 No 1 (2022): Jurnal Pertanahan
Publisher : Sekolah Tinggi Pertanahan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53686/jp.v12i1.128

Abstract

Abstrak Representasi sistem kadaster 3D membutuhkan kerangka teknis dalam hal ketelitian posisi dan syarat-syarat teknis. Sistem tinggi yang mempunyai georeferensi pada sistem koordinat horizontal dan vertikal tertentu dapat menentukan lokasi properti dan hubungan geometrik model kadaster 3D. Salah satu solusi alternatif penentuan sistem koordinat vertikal adalah menggunakan tinggi ortometrik yang diikatkan pada sistem tinggi nasional. Seiring dengan perkembangan kadaster 3D dalam beberapa dekade terakhir, berkembang juga teknologi termasuk akuisisi data kadaster 3D, validasi data, dan visualisasi data untuk memenuhi kebutuhan dasar kadaster 3D. Pengukuran objek kadaster 3D secara teliti, baik secara horizontal dan vertikal didukung oleh teknologi pengukuran yang berkembang sangat pesat, seperti GNSS CORS dan laser scanner. Tujuan penyusunan makalah ini adalah menyediakan data kadaster 3D dalam membangun sistem kadaster digital, validasi, dan pemodelan kadaster 3D. Kadaster 3D direpresentasikan menggunakan sistem tinggi ortometrik yang dihasilkan oleh teknologi GNSS CORS dalam tinggi elipsoid. Objek kadaster penelitian adalah Rusunawa Gemawang 2 dan Apartemen Student Park yang mewakili objek rumah susun. Proses georeferensi Rusunawa Gemawang 2 menghasilkan RMSE georeferensi minimum 0,008 m dan maksimum 0,017 m, sementara Apartement Student Park menghasilkan RMSE minimum 0,007 m dan maksimum 0,020 m. Model kadaster 3D divisualisasikan dalam bentuk ruang di tiap-tiap level dan memberikan gambaran geometrik 3D. Konversi tinggi dari tinggi elipsoid menjadi ortometrik merupakan salah satu tantangan dalam representasi kadaster 3D di Indonesia. ABSTRACT The representation of the 3D cadastral system requires a technical framework in terms of positional precision and technical requirements. Height systems that have georeference in certain horizontal and vertical coordinate systems can determine the location of properties and geometric relationships cadastre model. One alternative solution for determining the vertical coordinate system is to use an orthometric height tied to the national height system. Along with the development of the 3D cadastre in the last few decades, technology has also evolved including 3D cadastral data acquisition, data validation, and data visualization to meet the basic needs of the 3D cadastre. The meticulous measurement of 3D cadastral objects, both horizontally and vertically, is supported by rapidly developing measurement technologies, such as GNSS CORS and laser scanners. The purpose of this paper is to provide 3D cadastral data in building a digital cadastral system, validation, and 3D cadastral modeling. The 3D cadastre is represented using the orthometric height system generated by GNSS CORS technology using the elipsoid height. The object of the research cadastre is Rusunawa Gemawang 2 and Student Park Apartment which represent the apartment object. The georeferenced process of Rusunawa Gemawang 2 produces a minimum RMSE of 0.008 m and a maximum of 0.017 m, while the Student Park Apartment produces a minimum RMSE of 0.007 m and a maximum of 0.020 m. The 3D cadastral model is visualized in the form of a space at each level and provides a 3D geometric picture. Converting height from ellipsoid height to orthometric is a challenge in 3D cadastral representation in Indonesia.
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