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All Journal Jurnal Fisika Unand Jurnal Geosaintek JOURNAL ONLINE OF PHYSICS Journal of Applied Geospatial Information Journal of Appropriate Technology for Community Services Jurnal Riset Fisika Indonesia Dharma Pengabdian Perguruan Tinggi (DEPATI) Wahana Fisika : Jurnal Fisika dan Terapannya Jurnal Geosaintek
Tri Kusmita
Universitas Bangka Belitung
Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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Analisis Uji Chemical Oxygen Demand (COD) pada Air Limbah Sawit di Dinas Lingkungan Hidup dan Kehutanan Provinsi Bangka Belitung Rusdianto Rusdianto; Susanti Susanti; Tri Kusmita; Liyana Aryanto; Talitha Talitha; Mursid Mursid
Jurnal Riset Fisika Indonesia Vol 3 No 2 (2023): Juni 2023
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v3i2.3553

Abstract

Indonesia is the largest natural resource producing country in the world, the management of these natural resources requires assistance from various industries. In addition to providing an increase in the regional economy, industry can also cause an increase in waste which can cause environmental damage. Waste that is directly discharged into a water will cause a decrease in water quality, especially for palm oil liquid waste that has not met the specified wastewater quality standards. Chemical Oxygen Demand (COD) is one of the most important parameters in measuring water quality or water contamination load derived from dissolved oxygen in water or waste. Therefore, on this occasion, COD testing will be carried out to determine the level of dissolved oxygen in palm oil liquid waste. From the implementation of the calibration curve of COD testing in wastewater, it was declared accepted because the value of the test correlation coefficient was greater, namely r = 0.9994 than the value of the correlation coefficient set by SNI, namely r = 0.995. While precision data can be accepted if the value of % RPD is not greater than 10% of the test results.
Identifikasi Pola Aliran Air Tanah di Lapangan Panas Bumi Non-Vulkanik Desa Nyelanding Kabupaten Bangka Selatan Berdasarkan Anomali Self-Potential Yekti Widyaningrum; Anisa Indriawati; Githa Nurvilia Afni; Eri Gusnia; Tri Kusmita
Jurnal Riset Fisika Indonesia Vol 3 No 2 (2023): Juni 2023
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v3i2.4311

Abstract

As one of unique non-volcanic geothermal field in Indonesia, mapping the groundwater flow in Nyelanding Village, South Bangka is essential as preliminary study for further exploration activity if the geothermal manifestation. In order to achieve this goal, we conduct a research using natural electrical properties of subsurface, Self-Potentials (SP) method. In this study, fixed-based technique was used where the spacing between measurement stations is the multiplication of 10 m along three lines at the study area. Raw field data (potential value) was corrected to diurnal and closure corrections. Further, SP anomaly was plotted and combined with topography data to be analyzed. The result shows potential value raging from -25mV to 100mV which in agreement with the lowest and highest elevation in topography map, respectively. This means, these values are controlled by topographic feature in the study area. Thus, in conclusion, the groundwater flows from the West to North East and South East part of the study area
IDENTIFIKASI BATUAN PENYUSUN SISTEM PANAS BUMI NON-VULKANIK BANGKA TENGAH BERDASARKAN PENAMPANG 2D ANOMALI GAYA BERAT Eri Gusnia; Tri Kusmita
JOURNAL ONLINE OF PHYSICS Vol. 8 No. 3 (2023): JOP (Journal Online of Physics) Vol 8 No 3
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v8i3.27080

Abstract

The geothermal system in the Central Bangka area is a radiogenic non-volcanic geothermal system. This geothermal system is not associated with the volcanism process. The purpose of this research is to identify the rock components of the Non-Volcanic geothermal system in the Central Bangka geothermal field based on the 2D cross section of the gravity anomaly. This research was conducted by performing spectral analysis using Fast Fourier Transform (FFT) on the complete Bouger anomaly to obtain the residual anomaly. 2D modeling of the residual anomaly was done using inverse modeling with the smoothness constraint equation. The results show that the subsurface structure of the non-volcanic geothermal system in the Central Bangka geothermal area consists of cover rock in the form of sandstone (2.38 - 2.42 gr/cm3) at a depth of 3,000 m, reservoir rock consists of granite. (2.65 - 2.66 gr/cm3) at a depth of 0 - 9,000 m and the bedrock consists of diorite (2.87 - 2.9 gr/cm3) at a depth of 2,000 - 10,000 m.
Prakiraan Jumlah Curah Hujan Berdasarkan Data Parameter Cuaca Tahun 2011-2021 di Kota Pangkalpinang Tri Kusmita; Dhea Andesfa Saputri; Julia Ambarwati; Al-Fariq Ismail Syam; Akhmad Fadholi
Wahana Fisika Vol 9, No 1 (2024): June
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v9i1.68506

Abstract

Tropical weather prevails in the Pangkalpinang city region, complemented with a changeable rainy season that experiences monthly variations. This phenomena results in a considerable amount of precipitation in the city of Pangkalpinang, making the area known for its extreme rainfall. Using multiple linear regression approaches to anticipate monthly precipitation is the aim of this work. Rainfall (RR), air temperature (T), air humidity (RH), and air pressure are all part of the dataset that was collected over an 11-year period (2011–2021). The information was obtained from the meteorological station in Depati Amir Pangkalpinang. This study uses the multiple linear regression method. The rainfall forecast results are compared to the observed actual rainfall amounts. Based on air temperature and air humidity as predictors, the results show that the estimation of cumulative monthly precipitation in the Pangkalpinang city region for the year 2021 produced an average root mean square error (RSME) value of 112.6 mm/month. Furthermore, the T-test analysis produced a 0.9 result. With air temperature, humidity, and pressure as predictors, the total monthly rainfall for 2021 was predicted with an average root mean square error (RMSE) value of 107.9 mm/month. A T-test was also performed, and the result was 0.4. The results of this study show that the monthly rainfall forecast model for the city of Pangkalpinang that includes factors related to temperature, humidity, and pressure produces better results than the model that only includes these variables. November and December are the months with the greatest variations.
Analisis Anomali Gravity Daerah Panas Bumi Non-Vulkanik Di Bangka Tengah (Studi Kasus Panas Bumi Terak dan Keretak) Eri Gusnia; Tri Kusmita; Anisa Indriawati
Jurnal Riset Fisika Indonesia Vol 2 No 2 (2022): Juni 2022
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1069.638 KB) | DOI: 10.33019/jrfi.v2i2.3233

Abstract

Central Bangka is one area that has geothermal potential such as the Terak and Keretak area. These area have hot spring manifestation. Geothermal manifestations in Bangka is the type of non-volcanic radiogenic geothermal. Origin sources of this manifestation suspected from rocks run into the crack, folds and faults. The purpose of this study was to identify rock speading in geothermal area and it’s correlation between geothermal manifestation in Terak and Keretak. The data obtained from the TOPEX/Poseidon satellite is in the form of FAA (Free Air Anomaly) data. The data is then corrected using Burger correction and field correction. Spectral analysis was performed by Fourier transform with moving average filter. The results showed that Complete Bouger Anomaly has 13 mGal-39 mGal. Regional anomaly has 5,4 mGal - 9.8 mGal. Residual anomaly has 7 mGal sampai 29 mGal. There area was consist of intrusive granite rock from the Granite Klabat formation, clas and sandstone from Tanjung Genting Formation. Gravity anomaly shown Geothermal Terak and Keretak are composed of the same distribution of rock.
Pengukuran Kualitas Air Limbah Sawit Berdasarkan Baku Mutu Air Limbah Menggunakan AAS Rusdianto Rusdianto; Syachrul Ivandi; Tri Kusmita; Ilhafurroihan Apriliazmi
Jurnal Riset Fisika Indonesia Vol 4 No 1 (2023): Desember 2023
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v4i1.3554

Abstract

Palm oil industry waste is waste generated from the palm oil processing process. Palm oil liquid waste generally contains heavy metals, one of which is Cu and Zn. The presence of excessive Cu and Zn heavy metals can have a negative impact on living things and the surrounding environment. In this journal, the determination of the heavy metal content of Cu and Zn in palm oil wastewater was carried out using the AAS method with acetylene gas at a wavelength of 324.8 nm to determine the content of Cu metal content and at a wavelength of 213.9 nm to determine the Zn metal content. The results of determining the content of heavy metals Cu and Zn in sempel 1, 2 and 3 contained in palm oil wastewater which are still below the maximum limit of the quality standards obtained, namely less than 2 ppm for Cu metal and less than 5 ppm for Zn metal. utilized by living things and the surrounding environment.
Analisis b-value Gempabumi Menggunakan Metode Gutenberg-Richter Berdasarkan Estimasi Maximum Likelihood Di Daerah Sulawesi Utara Reski Maulinda; Tri Kusmita; Herman Aldila; Triani Triani
Jurnal Riset Fisika Indonesia Vol 4 No 2 (2024): Juni 2024
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v4i2.3804

Abstract

Sulawesi is an area prone to earthquakes. This is because the Sulawesi region is flanked by three main plates, namely the Pacific Ocean plate moving westward, the Australian Continental Plate moving northward, and the Eurasian Plate moving south-southeast. This situation causes a high level of seismicity in the Sulawesi region. The Sulawesi region has a fairly complex tectonic setting so that the activity of earthquakes in the Sulawesi region is also interesting to study. The level of seismicity depends on the degree of fragility of the rock (b-value) and the distribution of earthquakes in the region. This research was conducted to determine the b-value of earthquakes in the North Sulawesi region. The method used for this research is the Gutenberg-Richter method based on the Maximum Likelihood estimation. Maximum Likelihood Estimation is a method used to statistically calculate earthquake activity parameters. The software used are ArcGIS and Microsoft Excel. The research was conducted in North Sulawesi with coordinates 118° East - 125° East 1° North Latitude - 6° South Latitude. The data used is earthquake catalog data obtained from BMKG with earthquake data for a period of 10 years (2012-2021). Based on the results of the analysis of the distribution of seismicity based on magnitude, it is more towards the Sulawesi Sea and the distribution of seismicity based on depth is shallow. The result of calculating the b-value is 0.3537 and the a-value is 3.0932. It can be concluded that the North Sulawesi region has a fairly large chance of an earthquake occurring
Analisis Data Angin Permukaan di Bandara Udara Depati Amir Pangkalpinang Menggunakan Metode Windrose Dea Septika; Annisa Fatikasari; Tri Kusmita
Jurnal Riset Fisika Indonesia Vol 4 No 1 (2023): Desember 2023
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v4i1.4698

Abstract

Pangkalpinang is a city in the Bangka Belitung Islands that is close to the sea. This indicates that Pangkalpinang is influenced by land winds and sea breezes. The purpose of this study is to analyse the percentage of wind speed and maximum wind speed in Pangkalpinang City in each month. The data used were obtained from synoptic observations of the Depati Amir Class I Meteorological Station in Pangkalpinang from January to December from 2011 to 2020. The data obtained is processed using WRPLOT (Wind Rose Plots for Meteorological Data) software to determine the direction and magnitude of wind speed and produce wind pattern images in the form of wind rose diagrams. The results obtained show that the dominant wind blows from the Southeast (112 - 157°) with the highest wind speed of 1 - 4 knots with a percentage of 42.9%, while the maximum wind speed throughout 2011 - 2020 is 28 knots which occurred in the period January - December 2013. The results obtained show that the wind conditions at Depati Amir Airport Pangkalpinang are still safe for aircraft take-off and landing operations.
SUSEPTIBILITAS MAGNETIK SISTEM PANASBUMI NON VULKANIK DESA TERAK MENGGUNAKAN METODE GEOMAGNETIK Tri Kusmita; Yuant Tiandho; Yekti Widyaningrum; Umi Alawiyah
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.v9i3.15563

Abstract

Geothermal in Bangka Belitung islands are classified as radiogenic type of non-volcanic geothermal. Geothermal in this area was formed due to granite rocks that have been fractured, folded or faulted. Geothemal Terak has a surface temperature of 550C - 61.80C with a water discharge of 0.2 liters/second. This research aims to identify the forming rocks of geothermal system at Terak village based on magnetic field anomalies. Data acquisition was measured using a Proton Precession Magnetometer (PPM) along 2.5 km with 100 m spacing and 500 m spacing between lines. Data processing was analyzed using diurnal correction, IGRF correction, RTE (Reduce to the Equator) correction, anomaly separation using Upward Continuation. Modeling performed by applying 2D Inverse Modeling. The results indicated that the reservoir rock in Terak area with non-volcanic geothermal system was granite with susceptibility 42 x 103 - 49 x 103. The depth of the reservoir rock was partially at a depth of 30 - 125 meters above sea level and some were exposed on the surface (0 - 80 meters above sea level). Reservoir rocks are scattered in the northwest area of the study.
PENGUATAN LITERASI AKADEMIK MELALUI PELATIHAN KARYA TULIS ILMIAH UNTUK MEMBANGUN GENERASI CENDIKIA DI MAN INSAN CENDIKIA BANGKA TENGAH Kusmita, Tri; Puspita, Indah; Indriawati, Anisa; Saputri, Riny
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 4 No 2 (2024): November 2024
Publisher : Fakultas Sains dan Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/depati.v4i2.5708

Abstract

The training on scientific writing (KTI) for teachers at MAN Insan Cendikia Bangka Tengah represents a strategic step to enhance scientific literacy, given that KTI is a requirement for graduation and class advancement. This training aims to improve teachers' understanding of scientific writing through a guided tutorial method that combines theory with practical application. This method is designed to assist teachers in grasping the stages of KTI writing, from topic selection to proper citation techniques. Results following the training indicate a significant improvement in teachers' comprehension of KTI writing. Therefore, this training not only strengthens the academic literacy skills of teachers but also prepares them to guide students more effectively, thereby creating a quality educational environment that supports the development of an intellectual generation.
Co-Authors Afni, Githa Nurvilia Akhmad Fadholi Al-Fariq Ismail Syam Alawiyah, Umi Andina Syafrina Anisa Indriawati Annisa Fatikasari Apriliazmi, Ilhafurroihan Aryanto, Liyana Asisah, Tina Dea Amelia, Dea Dea Septika Dhea Andesfa Saputri Dwi Puji Astuti Dwi Puji Astuti Eddy Hermawan Eddy Hermawan Eri Gusnia Eri Gusnia Fathia, Suci Fatikasari, Annisa Fitri Afriani Githa Nurvilia Afni Gusnia, Eri Herman Aldila Hetty Triastuty Hidayat, Rizki Ilhafurroihan Apriliazmi Ilham Pribadi Indah Puspita, Indah Indriawati, Anisa Ivandi, Syachrul Julia Ambarwati Kamur, Sudarwin Kirbani Brotopuspito Lestari, Diani Liyana Aryanto Mardani Mardani Mardiyanto Mardiyanto Maulinda, Reski Mursid Mursid Mursid Mursid Mutia, Rara Mz, Nasri Nasri MZ octavia, yoanda wanda Pribadi, Ilham Putri Hardianti Rara Mutia Reski Maulinda Reza Firdaus Rita Desiasni Rizki Hidayat Rusdianto Rusdianto Rusdianto Rusdianto, Rusdianto Santya, Indah Saputri, Riny Septika, Dea Siska Oktaviyani Suci Fathia Supriyanto Rohadi Surya Ningsih Susanti Susanti Syachrul Ivandi Talitha Talitha Talitha, Talitha Triani Triani Triani, Triani Umi Alawiyah Umi Alawiyah Widodo Budi Kurniawan Widyaningrum, Yekti Yekti Widyaningrum Yekti Widyaningrum Yuant Tiandho