Article Per Year (5 Year)
p-Index From 2020 - 2025
1.953
P-Index
This Author published in this journals
All Journal JOURNAL ONLINE OF PHYSICS Jurnal Riset Fisika Indonesia Jurnal Geosaintek
Widyaningrum, Yekti
Unknown Affiliation
Astronomy Computer Science & IT Earth & Planetary Sciences Materials Science & Nanotechnology Physics

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
Identifikasi Zona Lemah Tanggul Daerah Aliran Sungai (DAS) Bumang Desa Kemuja Menggunakan Metode Geolistrik Resistivitas Konfigurasi Wenner Amelia, Dea; Widyaningrum, Yekti; Indriawati, Anisa
Jurnal Riset Fisika Indonesia Vol 5 No 1 (2024): Desember 2024
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v5i1.4940

Abstract

The Bumang Watershed is a stream of water originating from the Bumang Reservoir in Kemuja Village, Bangka Regency to hold back water from flooding the surrounding rice fields. Since the Bumang watershed embankment was built, the embankment has been damaged in the upper part of the Bumang watershed. The main cause is underground erosion. The erosion caused the embankment foundation to become weak, which was identified as a weak zone. The method used to identify weak zones in the embankment is the Wenner configuration resistivity geoelectric method. The Wenner configuration has good sensitivity to lateral changes compared to other configurations. Field data acquisition consisted of four passes with different electrode lengths and spacings. Based on the 2D cross-section of the subsurface of the Bumang watershed embankment, the weak zone is located on tracks 1, 2, and 3. On track 1 it is at a depth of 2.50 m - 3.19 m and 1.30 m - 3.19 m; on track 2 it is at a depth of 0 m - 2 m; and on track 3 it is at a depth of 0 m - 7 m, 2 m - 4.50 m, and 0 m - 4 m respectively.
Identifikasi Kestabilan Tanggul Waduk Desa Kemuja Menggunakan Metode Geolistrik Resistivitas Konfigurasi Wenner Asisah, Tina; Widyaningrum, Yekti; Indriawati, Anisa
Jurnal Riset Fisika Indonesia Vol 5 No 1 (2024): Desember 2024
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v5i1.4942

Abstract

Kemuja Village Reservoir is one of the reservoirs located in Kemuja Village, West Mendo District, Bangka Regency, which was built in 2015. On the sides of the Kemuja Village Reservoir, there are embankments that are used to prevent flooding of rice fields. Based on the initial survey, the height of the embankment from the ground is ±2.6 m and the water level is ±1 m above the surface. This study aims to identify the stability of the Kemuja Village reservoir embankment based on 2D modeling using the Wenner configuration resistivity geoelectric method with a spacing of 8 m between electrodes. Based on 2D modeling, the Kemuja Village reservoir embankment has good stability on all tracks, except on track 1 at a depth of 0 m - 1 m with a measurement distance of 10 m - 14 m, track 2 at a depth of 0 m - 1 m with a measurement distance of 36 m - 40 m, track 3 at a depth of 0.5 m - 2 m with a measurement distance of 6 m - 8 m; 0 m - 1.5 m with a measurement distance of 12 m - 16 m and 0 m - 2 m with a measurement distance of 28 m - 30 m, traverse 4 at a depth of 0 m - 1 m with a measurement distance of 8 m - 10 m and 0 m - 2 m with a measurement distance of 44 m - 48 m.
Aplikasi Filter EEMD Untuk Meningkatkan Kualitas Data VLF-EM Studi Kasus: Estimasi Lokasi Gorong-Gorong Di Kampus ITS Surabaya Widyaningrum, Yekti; Huda, 2A.M. Miftahul; Sungkono, Sungkono
Jurnal Geosaintek Vol. 4 No. 3 (2018)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Eksplorasi bawah permukaan menggunakan Very Low Frequency Electromagnetics (VLF-EM) telah dilakukan untuk menentukan rongga bawah tanah (gorong-gorong). Untuk mempertajam hasil eksplorasi dan mereduksi gangguan diaplikasikan filter EEMD. Data hasil filter diinterpretasikan secara kualitatif menggunakan filter Karous-Hjelt. Hasil Interpretasi filter Karous-Hjelt menunjukkan bahwa anomali bawah permukaan terdapat pada 25-35 meter dari titik mengukuran awal dan kedalaman 3-6 meter. Anomali tersebut menyatakan lokasi gorong-gorong di lokasi pengukuran
IDENTIFIKASI KETIDAKSTABILAN TANGGUL WADUK DESA KEMUJA KABUPATEN BANGKA MENGGUNAKAN METODE SELF-POTENTIAL (SP) Amelia, Dea; Asisah, Tina; Santya, Indah; Kusmita, Tri; widyaningrum, yekti
JOURNAL ONLINE OF PHYSICS Vol. 9 No. 2 (2024): JOP (Journal Online of Physics) Vol 9 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v9i2.8266

Abstract

Waduk merupakan suatu bangunan buatan yang berfungsi untuk menampung air. Penyebab utama yang dapat menyebabkan kerusakan pada badan tanggul biasanya adalah keruntuhan tanggul yang disebabkan oleh ketidakstabilan tanggul tersebut. Ketidakstabilan tanggul dapat terjadi karena adanya rembesan air yang menyebabkan tanah menjadi jenuh air. Tanggul Waduk Desa Kemuja hingga saat ini terdapat beberapa retakan pada badan tanggul yang kemungkinan dapat menyebabkan keruntuhan tanggul apabila tidak ditangani lebih lanjut. Penelitian ini mengidentifikasi kondisi lapisan tanah pada tanggul agar dapat mengetahui ketidakstabilan tanggul Waduk di Desa Kemuja menggunakan metode geolistrik self-potential (SP). Penelitian ini dilakukan dengan mengukur 3 lintasan penelitian. Berdasarkan hasil penelitian, pada lintasan 1 terdapat ketidakstabilan tanggul pada jarak 110 m dengan nilai potensial sebesar -11,1 mV dan pada jarak 125 m sebesar -10,8 mV, pada lintasan 2 terdapat pada jarak 155 m sebesar -1,3 mV, dan pada lintasan 3 terdapat pada jarak 55 m sebesar -4,1 mV. Ketidakstabilan tanggul menunjukan anomali negatif ketika rembesan air masuk ke tanggul. Zona ini dapat menyebabkan keruntuhan sehingga dapat mengganggu kestabilan tanggul. Berdasarkan hasil yang diperoleh, dapat disimpulkan bahwa metode self-potential (SP) dapat digunakan sebagai solusi tercepat untuk mencegah kerusakan tanggul berdasarkan identifikasi ketidakstabilan tanggul.
Penggunaan Automated Phase Picking pada Estimasi Hiposenter Gempa Lokal: Studi Kasus Lengan Atas Sulawesi Huda, A.M. Miftahul; Sahara, Ain; Widyaningrum, Yekti
Jurnal Riset Fisika Indonesia Vol 1 No 2 (2021): Juni 2021
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v1i2.2206

Abstract

Hypocenter estimation was carried out in several local earthquake events in the upper arm of Sulawesi Island. The process is carried out by utilizing P and S wave arrival time data obtained through automated phase picking. The Wadati diagram was used to test the feasibility of the data and HYPOINVERSE was used to estimate the hypocenter. Vp/Vs ratio shows varied results and RMS shows poor data picking. These results have an impact on RMS values which are quite high in the estimation of the hypocenter. There was an inverse comparison of the results when viewed through the RMS value between Wadati and HYPOINVERSE. Picking data improvements need to be done in order to get a better estimate.
Identification of Mineralization Zones Using Geoelectrical Methods Self-Potential (Sp) in Pemali Village Bangka Regency Angrainy, Renata; Hariyono, Muhammad Budi; Mariana, Susi; Widyaningrum, Yekti
Jurnal Riset Fisika Indonesia Vol 2 No 1 (2021): Desember 2021
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v2i1.3130

Abstract

Bangka Belitung as an area that has a lot of potential natural mineral resources, especially tin minerals, this tin mineral potential can be utilized for industrial and non-industrial purposes. Utilization of these minerals can be done by way of exploration, exploration of mineral distribution can be done directly in the field using geophysical methods. In this study the method used is the geoelectric method of self-potential (Sp) fixed base configuration. Data acquisition was carried out in two research sample areas, namely, region 1 and region 2 with a distance between the porouspot electrodes as far as 5 m. Data retrieval on the rover was carried out at each point of the trajectory, three times the data was taken with an interval of 30 seconds, while the retrieval at the base in region 1 was carried out every 3 minutes while in region 2 it was carried out every 1 minute. The research is focused on identifying the distribution of mineral zones below the surface. The results of the study are in the form of a contour map that describes the distribution pattern of potential difference anomalies (Sp) and a topographical anomaly map at the research location, which will later be interpreted to determine the direction of the distribution of minerals below the surface of the study site.
Identifikasi Sebaran Air Lindi (Leachate) Menggunakan Metode Geolistrik Self-Potential (SP) Di Tempat Pembuangan Akhir (TPA) Parit Enam Kota Pangkalpinang Padilah, Hoirotul; Widyaningrum, Yekti; Kurniawan, Widodo Budi
Jurnal Riset Fisika Indonesia Vol 2 No 1 (2021): Desember 2021
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jrfi.v2i1.3208

Abstract

Garbage is a common pollutant that causes various negative impacts such as lack of aesthetic value to the environment, brings various types of diseases and clogs waterways. The waste is then transported and disposed of at the TPA. The Parit Six TPA in Pangkalpinang City accommodates around 150 tons of garbage every day. This will cause contamination of water, soil and ground water by leachate seeping from the pile of garbage exposed to rain. The leachate can be identified using the Geoelectric Self Potential (SP) method using a fixed base technique with a space between the electrodes of 5 m. Then obtained the results of data acquisition from 6 paths as many as 92 points. Furthermore, the resulting data will be corrected and processed to produce isopotential contours and topography. Based on isopotential contours and topography, the distribution of fluid in the area around the Parit Enam TPA Pangkalpinang City is spread in the northeast, southwest to the north of the study area. The fluid quality around the study site is known from the results of density and pH of the sample well water. These results show the distribution of leachate in the area around the Parit Enam TPA Pangkalpinang City is spread from the northeast to the southwest in the northern part of the research area and from the southwest to the southern part of the research area towards the northern part of the research area.
Pengaruh Penambahan Karbon Aktif Dari Kulit Lada dan Suhu Aktivasi Karbon terhadap Nilai Konduktivitas Anoda Berbasis LTO Akbar, Jefri; Kurniawan, Widodo Budi; Widyaningrum, Yekti; Indriawati, Anisa
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.v4i1.3823

Abstract

Pemodelan Anomali Self Potential (SP) Menggunakan Algoritma MVDE (Multi Variant Differential Evolution) Haryono, Muhammad Budi; Widyaningrum, Yekti; Aldila, Herman
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.v3i2.4162

Abstract

Self Potential (SP) is a practical and simple geophysical method. Interpretation of the data of these methods can be done qualitatively and quantitatively. Quantitative interpretation can be done through inversion modeling, but inversion modeling often has problems with the solution of model parameters that are stuck at local minima. Therefore, in this study the MVDE (Multi Variant Differential Evolution) algorithm is used which is able to solve model parameter problems, by finding global model parameter solutions. Inversion modeling of observation Self Potential (SP) anomaly data is carried out using an algorithm that has been tested and produces a misfit of ≤10%, the test aims so that the algorithm can be used further to model observation data. The observation Self Potential (SP) anomaly modeling produces model parameter values ​​K=609.3mV D=9.3 h=3.75m q=1.51 and x=1-16, with a subsurface anomaly model in the form of a spherical geometry at depth 3.75m.
Identifikasi Pola Aliran Air Tanah di Lapangan Panas Bumi Non-Vulkanik Desa Nyelanding Kabupaten Bangka Selatan Berdasarkan Anomali Self-Potential Widyaningrum, Yekti; Indriawati, Anisa; Afni, Githa Nurvilia; Gusnia, Eri; Kusmita, Tri
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
Co-Authors A.M. Miftahul Huda Afni, Githa Nurvilia Akbar, Jefri Angrainy, Renata Asisah, Tina Daus, Reza Firdaus Fir Dea Amelia, Dea Gusnia, Eri Hariyono, Muhammad Budi Haryono, Muhammad Budi Herman Aldila Huda, 2A.M. Miftahul Indriawati, Anisa Mariana, Susi Padilah, Hoirotul Sahara, Ain Santya, Indah Sungkono Sungkono Tri Kusmita Widodo Budi Kurniawan