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All Journal Charm Sains : Jurnal Pendidikan Fisika Journal of Current Studies in SDGs

Donny Royke Wenas

Universitas Negeri Manado

Author-ID : 6118239

Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Physics Social Sciences Other

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MODEL KECEPATAN 1D GELOMBANG P DAN RELOKASI HIPOSENTER WILAYAH SULAWESI UTARA DAN SEKITARNYA MENGGUNAKAN METODE COUPLE VELOCITY-HYPOCENTER Christi Tumangkeng; Donny Royke Wenas; Sixtus Iwan Umboh
Charm Sains: Jurnal Pendidikan Fisika Vol 1 No 2 (2020): JUNI
Publisher : Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado

North Sulawesi is in a complex tectonic interaction which is the relative movement of three Eurasian macro plates, the Pacific plate, the Philippine plate, and the Maluku Sea microplate. The active tectonic movement results in high earthquake activity in the region of North Sulawesi and its surroundings. This results in the importance of accurate earthquake parameter information, one of which is by conducting research on local wave velocity. The purpose of this study is to determine the velocity of 1D P waves and relocate the earthquake hypocenter and determine the correction stations in North Sulawesi and surrounding areas with coordinate boundaries 0.17166°S- 2.742781°N and 119.5212°E- 125.5067°E using the Couple Velocity-Hypocenter method with Velest software. The results of simultaneous inversion processing are carried out until the 50th iteration which obtains the wave velocity fluctuates at several depths but in general, the denser layers of the earth's compilers will increase the wave velocity, the improvement of the RMS from an average of 1.71 to 0.49 and the correction of the stations obtained is at intervals of 0.39 to 20.91.

KAJIAN GUGUS FUNGSI DAN KOMPOSISI MINERAL BATUAN TERALTERASI MENGGUNAKAN SPEKTROSKOPI SEM-EDX DAN FTIR PADA DAERAH MANIFESTASI PANAS BUMI DI DESA TORAGET, LANGOAN, KABUPATEN MINAHASA Rizaldy Lasut; Donny Royke Wenas
Charm Sains: Jurnal Pendidikan Fisika Vol 1 No 2 (2020): JUNI
Publisher : Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado

North Sulawesi is one of the regions with a large potential of geothermal manifestations, wrongly located in Toraget Village, District of Langoan, Minahasa Regency, where there is a geothermal manifestasion . The purpose of this study was to study the mineral composition using SEM-EDX and FTIR in Toraget Village, Langoan District, Minahasa Regency. Based on the results of research conducted in Toraget Village, Langoan District, Minahasa Regency has a mineral composition in sample 1 namely Oxygen (O), Silica (Si) with percentages of weight are 61.32% and 38.68% and atomic percentages respectively 73.57% and in sample 2 hot springs have elemental content that is Oxygen (O) with percentage weight and percentage atomic 100%. For the functional cluster of rock sample 1 which contains C-O Ester, C-H Alkene, Aromatic C=C Alkene, and sample 2 contains C-O Esters, C-H Alkene, Aromatic C=C Alkene.

STUDI HANTARAN KONDUKSI PANAS DI SEKITAR MANIFESTASI PANAS BUMI DI BAGIAN SELATAN GUNUNG TAMPUSU Miranda Supriyadi; Donny Royke Wenas; Jeane Cornelda Rende
Charm Sains: Jurnal Pendidikan Fisika Vol 1 No 3 (2020): OKTOBER
Publisher : Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado

Indonesia is a country that has 40% of the world's geothermal potential, but only 3% was used.Research to determine the potential for geothermal distribution in the southern part of MountTampusu is by taking data directly using a thermometer, the purpose of this research was todetermine the temperature distribution at a depth of 0 cm, 30 cm, 60 cm, 90 cm by mapping. Thedata obtained is primary data, then entered into Microsoft Excel. In Microsoft Excel analyzed of themaximum, minimum and average temperatures. Then from the temperature data in the form oftemperature contours based on depth by using surfers 11. From the results of data processing usingsurfers, it was found that the temperature distribution in the southern part of Mount Tampusu variedin value, in the morning at depth 0 cm, 30 cm, 60 cm, 90 cm has value 23.5775°C, 22.67°C,23.315°C, 24.1025°C, daytime at depth 0 cm, 30 cm, 60 cm, 90 cm has value 27.5675°C,24.2525°C, 24.1825°C, 24.6925°C, in the evening at depth 0 cm, 30 cm, 60 cm, 90 cm has value24.5525°C, 24.3525°C, 24.2825°C, 24.605°C. The temperature pattern in the southern part ofMount Tampusu has a perpendicular pattern and slightly spreads to the northwest.

Temperature Profile at Shallow Subsurface Depth of Warm Ground Geothermal Manifestations in Bukit Kasih Minahasa, North Sulawesi: Implications for SDG 7 Cyrke Adfie Netty Bujung; Donny Royke Wenas
Journal of Current Studies in SDGs Vol. 3 No. 2 (2027): June
Publisher : Sekolah Tinggi Agama Islam Sabilul Muttaqin Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63230/jocsis.3.2.191

Objective: To investigate the shallow subsurface temperature profile of warm ground geothermal manifestations in the Bukit Kasih area, Minahasa, North Sulawesi, Indonesia. Specifically, this study examined the relationship between temperature variation and subsurface depth to develop a preliminary thermal model of geothermal manifestations. The study contributes to geothermal resource assessment and supports sustainable renewable energy development in line with Sustainable Development Goal 7 (Affordable and Clean Energy). Method: The study employed a field-based quantitative approach through direct temperature measurements at warm ground geothermal manifestation sites. Temperature data were collected from several randomly selected measurement points at shallow subsurface depths ranging from 0 to 200 cm. The research was conducted over six months, consisting of field surveys, preparation of measurement equipment, geothermal manifestation observations, temperature data acquisition, laboratory analysis, and data processing. The temperature gradient and depth-temperature relationship were analyzed to determine the subsurface thermal characteristics and develop temperature distribution models. Results: The results showed that the shallow subsurface temperature gradient of warm ground manifestations in the Bukit Kasih geothermal area varied from 13.61 to 71 °C/m. The temperature-depth relationship demonstrated a linear pattern at shallow subsurface depths, indicating a consistent increase in temperature with increasing depth. Meanwhile, the temperature model at greater depths followed a logarithmic function pattern, reflecting changes in heat transfer behavior within the subsurface environment. These findings provide important information regarding shallow geothermal characteristics and potential indicators for further geothermal exploration. Novelty: The study provides new insights into the shallow subsurface thermal characteristics of warm ground geothermal manifestations in Bukit Kasih, Minahasa, North Sulawesi, by developing a temperature-depth model based on direct field measurements. The findings contribute to geothermal exploration strategies and the advancement of renewable energy utilization in accordance with SDG 7 (Affordable and Clean Energy).

Co-Authors Christi Tumangkeng Cyrke Adfie Netty Bujung Iwan Sixtus Umboh Miranda Supriyadi Rende, Jeane Cornelda Rizaldy Lasut

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