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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Sains dan Teknologi GRADIEN Jurnal Fisika Unand SEMIRATA 2015 WARTA Jurnal Kelautan Tropis Jurnal Fisika FLUX BERITA BIOLOGI Jurnal Penelitian Sains Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pengabdian Pada Masyarakat Spektra: Jurnal Fisika dan Aplikasinya Marine Research in Indonesia Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Jambura Journal of Mathematics Jurnal Pendidikan Fisika dan Teknologi Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Al-Khidmat : Jurnal Ilmiah Pengabdian Kepada Masyarakat Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Pamulang Law Review Academia Open Jurnal Inovasi Pengabdian Masyarakat Pendidikan PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Maritime Park: Journal Of Maritime Technology and Socienty Jurnal Ilmiah Profesi Guru (JIPG) Makara Journal of Technology Formosa Journal of Computer and Information Science Newton-Maxwell Journal of Physics Indonesian Journal of Community Empowerment and Service
Supiyati .
Universitas Bengkulu
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Impact of Longshore Currents and Wave Energy on Estuary Morphodynamics: A Case Study of Selagan Jaya Beach Elmiati, Elmiati; Supiyati, Supiyati; Suwarsono, Suwarsono
Academia Open Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.7219

Abstract

Estuarine morphology is profoundly influenced by dynamic coastal processes, particularly the interplay of longshore currents and wave energy. This study delves into the evolving Selagan Jaya River estuary, characterized by changing mouth morphology attributed to siltation. Longshore currents and wave energy, stemming from coastal waters, play a pivotal role in this transformation. Employing field measurements encompassing current direction, speed, wave height, period, and drone-aided visualizations at five strategic points, a comprehensive analysis was conducted. Quantitative findings reveal wave heights ranging from 0.01 to 1.74 m, wave periods spanning 3 to 11 s, and current speeds oscillating between 0.1 to 1.1 m/s in a westerly direction. The outcomes unequivocally underscore the significant influence of longshore currents and wave energy on estuarine evolution, specifically in shaping the Selagan Jaya Estuary through sedimentation-induced siltation. These findings bear implications for coastal management and morphological preservation in estuarine environments worldwide. Highlight: Dynamic Influence: This study emphasizes the substantial impact of longshore currents and wave energy on the morphology of evolving estuarine systems. Changing Estuary Shape: The research focuses on the Selagan Jaya River estuary, illustrating how dynamic coastal processes, particularly sedimentation-driven siltation, contribute to alterations in mouth morphology. Comprehensive Analysis: Through field measurements and drone-assisted visualizations, the study provides quantitative insights into wave characteristics and current dynamics, revealing the intricate interplay driving estuarine transformation. Keyword: Estuarine Morphology, Longshore Currents, Wave Energy, Coastal Processes, Sedimentation
Wind Influence on Air Rami Estuary Morphology: A Vector Analysis Safitri, Oktari Elha; Supiyati, Supiyati; Suwarsono, Suwarsono
Academia Open Vol 8 No 1 (2023): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.8.2023.7221

Abstract

Investigating the dynamic Air Rami Estuary in Mukomuko Regency, Bengkulu Province, this study explores the role of wind movement in shaping estuarine morphology. The research aims to discern wind speed and vector direction associated with estuarine changes. Employing field measurements, wind parameters, and estuary imagery from USGS, the investigation reveals wind speeds ranging from 1.630 to 5,210 m/s, averaging 3.153 m/s, predominantly oriented south and southwest. These findings underscore the profound impact of wind dynamics on Air Rami Estuary's shape alterations, advancing our understanding of coastal morphological evolution and resilience. Highlight: Estuarine Wind Dynamics: This study investigates how wind movement influences the morphological evolution of the Air Rami Estuary, shedding light on a crucial coastal process. Wind Speed and Direction: By analyzing wind parameters and vector direction, the research uncovers a range of wind speeds and prevailing orientations, revealing significant insights into estuarine changes. Resilience and Evolution: The findings emphasize the substantial impact of wind dynamics on shaping estuarine morphology, contributing to our broader understanding of coastal resilience and evolution. Keyword: Air Rami Estuary, Wind Movement, Estuarine Morphology, Wind Speed, Coastal Evolution
Microzonasi Perubahan Garis pantai Akibat Pengaruh Rip Current di Pantai Kota Bani Bengkulu Supiyati, Supiyati; Johan, Septi; Suwarsono, Suwarsono; Putri, Hestyna Eka
Jurnal Kelautan Tropis Vol 27, No 2 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i2.22262

Abstract

The coastal of Kota Bani in Bengkulu is directly connected to the Indian Ocean, which has strong waves and currents that have the potential for rip currents. Recently, Kota Bani coast has experienced rapid shoreline changes caused by abrasion. Therefore, the purpose of this study is to identify rip current generating parameters, microzonation mapping of shoreline changes and its relationship with the potential zone of rip current occurrence at Kota Bani Coast, Bengkulu. The methods used in this study were in situ measurement of rip current generating parameters and identification of rip current using drone photos and USGS data to see shoreline changes. Analysis was done descriptively and quantitatively. Based on the research results, the type of breaking wave found at Kota Bani Coast is the plunging type with an irribaren value of 0.3 - 2.3. The potential for rip current occurs more in the west season than in the first transitional season. Rip current speeds of 3 m/s in the west season and 2.2 m/s in the first transitional season. Based on photo data of the coastline from the USGS for 10 years, the abrasion zone experienced a total coastline setback of 149.9 meters and in the non-abrasion zone experienced a total coastline increase (sedimentation) of 113.3 meters, with an average per year.  Pantai Kota Bani Bengkulu Utara berhubungan langsung dengan Samudera Hindia yang memiliki gelombang dan arus kuat yang memiliki potensi kemunculan rip current. Akhir-akhir ini Pantai kota Bani mengalami perubahan garis pantai yang sangat cepat yang disebabkan abrasi. Oleh sebab itu tujuan penelitian ini adalah mengidentifikasi parameter pembangkit rip current, pemetaan microzonasi perubahan garis pantai dan  hubungannya dengan zona potensi rip current di Pantai Kota Bani Bengkulu. Metode yang digunakan dalam penelitian ini adalah pengukuran in situ parameter pembangkit rip current dan identifikasi rip current menggunakan foto drone serta data USGS utuk melihat perubahan garis pantai. Analisis dilakukan secara diskriptif dan kuantitatif. Berdasarkan hasil penelitian diperoleh tipe gelombang pecah yang terdapat di Pantai Kota Bani yaitu tipe plunging dengan nilai irribaren 0,3 - 2,3. Potensi kemunculan rip current lebih banyak terjadi pada musim barat dibandingkan musim peralihan I. Kecepatan rip current pada musim barat 3 m/s dan pada musim peralihan I 2,2 m/s. Berdasarkan data foto garis pantai dari USGS selama 10 tahun zona terabrasi terjadi total kemunduran garis pantai 149,9 meter dan pada zona tidak terabrasi mengalami total kemajuan garis pantai (sedimentasi) 113,3 meter, dengan rata-rata perubahan garis pantai per tahun 3,7 m. Zona abrasi dan tidak terabrasi sama-sama berpotensi munculnya rip current, akan tetapi kemunculan rip current lebih banyak pada zona terabrasi, hasil yang didapat menunjukkan bahwa rip current menjadi salah satu faktor mempercepat terjadinya abrasi di Pantai Kota Bani.  
Distribusi Target Strength Ikan Demersal Melalui Pengukuran Akustik Secara In-Situ Di Perairan Kahyapu Pulau Enggano Kabupaten Bengkulu Utara Bakhtiar, Deddy; Ompusunggu, Yordan A; Anggoro, Ari; Supiyati, Supiyati
Jurnal Kelautan Tropis Vol 27, No 1 (2024): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v27i1.19793

Abstract

Kahyapu Waters is one of the potential waters for demersal fishing in Enggano Island. Demersal fish resources in Kahyapu Waters if exploited optimally can provide sustainable benefits for local fishermen. Target strength is one of the most important parameters in estimating fish stocks because this value is a scale in estimating the potential of fish resources. This study aims to analyze the average value of target strength (TS) of demersal fish through in-situ acoustic measurements, and describe the distribution of TS of demersal fish in Kahyapu.  Data were collected using Simrad EK15 echosounder by following the cruise track in the form of 8 zigzag transects and divided into 32 ESDU (Elementary Sampling Distance Unit). The results showed that the TS value of demersal fish had an average value of -48.93 dB with a range of values ranging from -67.34 dB to -38.77 dB with an estimated fish body length ranging from 1.08 to 28.91 cm. Spatial distribution of demersal fish target strength with the lowest depth of 6.4-16.9 m is located in ESDU 12 and ESDU 11 and the highest depth is 25.9-32.4 m located in transect 3 distribution of desmersal fish with the highest TS dominated scattered at a depth of 19.4-25.9 m.  Perairan Kahyapu merupakan salah satu perairan yang potensial untuk penangkapan ikan demersal di Pulau Enggano. Sumber daya ikan demersal di Perairan Kahyapu apabila dieksploitasi secara optimal dapat memberikan manfaat yang berkelanjutan bagi nelayan lokal. Target strength merupakan salah satu parameter yang sangat penting dalam pendugaan stok ikan karena nilai ini merupakan skala dalam pendugaan potensi sumberdaya ikan. Penelitian ini bertujuan untuk menganalisis nilai rata-rata target strength (TS) ikan demersal melalui pengukuran akustik secara in-situ, dan menggambarkan distribusi TS ikan demersal di Kahyapu.  Pengambilan data menggunakan echosounder Simrad EK15 dengan mengikuti jalur pelayaran berbentuk transek zig-zag sebanyak 8 transek dan dibagi menjadi 32 ESDU (Elementary Sampling Distance Unit). Hasil penelitian menunjukkan bahwa nilai TS ikan demersal memiliki nilai rata-rata -48.93  dB dengan rentang nilai berkisar -67.34 dB sampai -38.77 dB dengan dugaaan panjang tubuh ikan berkisar 1.08 sampai 28.91 cm. Distribusi Target strength ikan demersal secara spasial dengan kedalaman terendah 6,4-16,9 m terletak di ESDU 12 dan ESDU 11 dan kedalaman tertinggi adalah 25,9-32,4 m terletak di transek 3 sebaran ikan desmersal dengan TS tertinggi didominansi tersebar di kedalaman 19,4-25,9 m.
Utilization of Measurement Technology in Analyzing Tidal Flooding Run Up Along Semidang Alas Maras Coast Supiyati; Suwarsono; Harlianto, Budi; Baringin, Rolando
Formosa Journal of Computer and Information Science Vol. 4 No. 1 (2025): March 2025
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/fjcis.v4i1.12307

Abstract

Tidal floods in the Semidang Alas Maras coast often occur and disrupt community activities. The height and area affected by tidal flood run-up is not the same every time. This research are to identify the factors that influence tidal floods and determine the effect of seasonal changes on tidal flooding run-up along Semidang Alas Maras coast by utilising measurement technology using drones. The method in this research is direct measurements of tides, visual photos topographic using drones, and also secondary data including tidal data from TMD model, rainfall, and wind data during tidal flooding. Based on the results of the study, it was found that tidal flooding run-up along Semidang Alas Maras coast was influenced by tides, high rainfall and wind. The mixed tide type of Semidang Alas Maras is Mixed Tide Prevailing Semidiurnal with a Formzhal number of 0.76. The area affected by the tidal flood run-up for the criteria of no danger and less danger every season is the same. Meanwhile, the criteria for moderately dangerous, dangerous and very dangerous vary every season. The highest area value occurring in the western season, the criteria for moderately dangerous 20% with an area of 83.06 Ha, 21% hazard with an area of 85.78 Ha, and very dangerous 23% with area of 93.95 Ha
Analisis Perubahan Garis Pantai Pulau Enggano Bengkulu Utara Menggunakan Aplikasi Digital Shoreline Analysis System (DSAS) Gunawan, Nur Aini; Ekawita, Riska; Supiyati, Supiyati; Anjasman, Anjasman
Jurnal Fisika Unand Vol 13 No 6 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.6.756-761.2024

Abstract

The coastline is the boundary between the land surface and the sea surface that can change every year. Enggano Island is one of the areas experiencing very rapid coastal changes. This research aims to identify changes in the coastline of Enggano Island over the past 5 years and determine the maximum and minimum changes in abrasion and accretion. The data processing results show that over the past 5 years, the coastline in three villages on Enggano Island has changed overall, with abrasion of 91.01 meters and accretion of 348.08 meters. Due to the wave height on Enggano Island, these three villages have experienced sedimentation (land addition) and changes in the coastline caused by accretion being greater than abrasion. For instance, in 2020-2021, the sea wave height peaked, causing abrasion. However, the wave height continued to decrease in the following years, causing land erosion each year. From the explanation above, it can be concluded that Enggano Island is experiencing changes in its coastline, which are predominantly caused by accretion events.
Introduction to Science Learning Tools Based on Waste for Elementary School Students Ekawita, Riska; Supiyati; Saputra, Rahmat; Yosia Pandu S; Melisa, Wery; Yuliza, Elfi
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 8 No. 2 (2025): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v8i2.6294

Abstract

Regulations and laws in Indonesia strongly support learning using teaching aids. Teaching media or aids are essential in the process of knowledge transfer for students. Students will find it easier to understand the lesson material if assisted by teaching aids, even if they are in a simple form. Teachers can introduce teaching aids made from recycled waste materials. Therefore, the aim of this community service activity is to introduce the development of teaching materials made from waste materials. A community service activity utilizing waste materials (cardboard, sticks, etc.) as classroom learning media will be conducted at SDIT Nurul Fikri, Bengkulu City. The target audience for this community service activity is teachers and some students. The method used consists of theory and practice. The service team will train teachers and students to create science teaching aids, particularly on the themes of pressure and energy. As a result of this activity, several examples of science teaching aids made from waste materials were produced. These teaching aids will certainly help enhance students' understanding and create their own appeal toward science subjects.
The Influence of Wind Direction and Speed on Rainfall in Bengkulu City (2019-2023) Based on the Schmidt-Fergusson and Wind Rose Models Agustin, Rika Amelia; Ekawita, Riska; Supiyati, Supiyati; Alfando, Andre
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 11 No 1 (2025): January-June
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v11i1.8749

Abstract

Increasingly extreme climate change has increased rainfall intensity and uncertainty of weather patterns in many parts of Indonesia, including Bengkulu City. This phenomenon affects rainfall patterns, the duration of the wet and dry seasons, and wind speed, all of which have an impact on various aspects of life. This study analyzes the effect of wind direction and speed on rainfall in Bengkulu City using the Schmidt-Fergusson, Wind Rose, and Multiple Linear Regression models, based on data from the Fatmawati Soekarno Bengkulu Meteorological Station in 2019-2023. The results of this study indicate that the dominant wind direction comes from the north, northeast, and southeast, with an average speed of 2.47 m/s, categorized as a weak wind according to the Beaufort scale. The highest annual rainfall was recorded in October 2022 at 600 mm. Based on the Schmidt-Fergusson classification, Bengkulu City is included in climate type A with a Q value = 0.1. Regression analysis shows that wind speed has a significant negative effect on rainfall indicating that wind speed has a negative effect, meaning that an increase in wind speed will cause a decrease in rainfall, while humidity has a positive effect, indicating that when air humidity increases, rainfall will also increase. The R² value of 32.7% indicates that the wind, temperature, pressure, and humidity variables explain some of the variation in rainfall. This finding emphasizes the importance of monitoring wind elements in the early warning system for extreme weather and supports hydrometeorological disaster risk mitigation planning in coastal areas vulnerable to climate change.
Pengaruh energi gelombang laut terhadap perubahan estuari Sungai Air Pino Bengkulu Selatan pada musim timur Permatasari, Deah; Berliani, Riska; Siregar, Anjeli Agustina; Supiyati, Supiyati
Jurnal Penelitian Sains Vol 26, No 1 (2024)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v26i1.911

Abstract

Estuari merupakan daerah bagian hilir dari sungai yang berhubungan dengan laut. Estuari Sungai Air Pino mengalami perubahan bentuk akibat terjadinya pendangkalan di mulut estuari yang dipengaruhi gelombang laut Pantai Mengkudum. Tujuan penelitian ini untuk mengetahui pengaruh energi gelombang laut terhadap perubahan Estuari Muara Air Pino. Metode riset ini adalah pengukuran langsung di lapangan pada 3 titik pengukuran dengan menggunakan Tide Gauge dengan parameter yang ditinjau tinggi dan periode gelombang. Berdasarkan riset yang telah dilakukan diperoleh tinggi gelombang berkisar 0,02 m – 1,07 m dengan nilai gelombang signifikan 0,52 m dan tinggi gelombang signifikan peramalan 0,38 m, periode gelombang berkisar 3,01 s - 10,73 s dengan periode gelombang signifikan 6,9 s dan periode gelombang signifikan peramalan 2,40 s. Energi gelombang berkisar 0,501 J – 1573 J. Pendangkalan Estuari Sungai Air Pino diakibatkan karena energi gelombang yang mengaduk partikel sedimen secara beragsung angsur dalam waktu yang lama dan kemudian partikel sedimen tersebut akan terbawa arus dan mengendap ketika kecepatan arus semakin melemah, endapan sedimen tersebut kemudian membentuk daratan baru yang berdampak pada perubahan Estuari Sungai Air Pino. 
Microclimatic Temperature Variability and Trends in Bengkulu Province: ANOVA and Regression-Based Analysis Norfahmi, Siti Hairunnisa; Samdara, Rida; Supiyati, Supiyati; Lestari, Wina Ayu
Jambura Journal of Mathematics Vol 7, No 2: August 2025
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjom.v7i2.33376

Abstract

This study investigates the microclimatic variability and trends of air temperature across three meteorological stations—Fatmawati, Bengkulu, and Kepahiang—in Bengkulu Province, Indonesia. Using five years of daily data (June 2020 to May 2025), minimum (Tmin), maximum (Tmax), and average (Tavg) temperatures were analyzed to understand both spatial patterns and temporal changes in surface air temperature. One-way ANOVA was conducted to assess whether mean temperatures differed significantly across stations, followed by Tukey  post hoc test for pairwise comparisons. The analysis revealed a consistent and statistically significant difference in all temperature variables (p 0.05), particularly between the inland highland station (Kepahiang) and the two coastal stations. In addition, monthly averages of Tavg were analyzed using simple linear regression, with significance tested via regression-based ANOVA. All three stations exhibited statistically significant warming trends (p 0.005), with slopes ranging from +0.0152 to +0.0213 °C/month (~0.18–0.26 °C/year), despite relatively modest coefficients of determination (R² = 0.14–0.24). These results highlight a dual climatic dynamic in the region: strong seasonal and spatial variability, overlaid with emerging baseline warming. The study underscores the importance of localized climate analysis for adaptation planning, particularly in topographically diverse tropical regions facing increased exposure to climate variability and change.
Co-Authors Agustin, Rika Amelia Alfan Sukmana Praja Alfando, Andre anjasman, anjasman Anwar, Anang Ari Anggoro Ashar Muda Lubis Asteriqa, Mica Astuti, Nissa Azhari, M Fikri Bambang Sulistyo Baringin, Rolando Berliani, Riska Chandra Kurniawan, Chandra Dari, Evita Sri Wulan Deddy Bakhtiar Deddy Bakhtiar, Deddy Desrina Saragih, Rika Devi Permata Sari Elfi Yuliza Elisa, Imania Elmiati Elmiati Erdi, Iwan Erwina, Yuyun Gita Rahma Sari Gunawan, Nur Aini Hairunnisa Norfahmi, Siti Halauddin Halauddin Halauddin Halauddin Halauddin Harlianto, Budi Helfi Eka Saputra Henny Johan Hestyna Eka Putri Ichsan Setiawan Ima Maisaroh Irkhos Irkhos Iwan Erdi Johan, Septi Lestari, Wina Ayu Lizalidiawati M Syarifuddin Mehmed, Muhammad Umar Melisa, Wery Mhd Ikhwanuddin Abdullah Mihardja, D. K. Mihardja, D. K. Nanang Sugianto Nasya, Angel Pauline Nissa Astuti Norfahmi, Siti Hairunnisa Ompusunggu, Yordan A Permatasari, Deah Putri, Hestyna Eka Ratmo, Edy Rida Samdara Riska Ekawita Risky Oktami Safitri, Oktari Elha Saputra, Rahmat Setya Pagestu Siregar, Anjeli Agustina Siti Fatimah Soleh Hidayat, Soleh Sudirman Sudirman Suhendra - Suhendra Suhendra Sujanah, Nanah Suprijo, T. Suprijo, T. Suwardi Suwardi Suwardi Suwardi Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Suwarsono Syamsul Bahri Syamsul Bahri Syaputri, Adinda Hija XXX, SATURN Yosia Pandu S