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All Journal BULETIN OSEANOGRAFI MARINA POSITRON Jurnal Kelautan : Indonesian Journal of Marine Science and Technology GRADIEN Jurnal Fisika Unand JURNAL ENGGANO Jurnal Sumberdaya Akuatik Indopasifik INDONESIAN JOURNAL OF APPLIED PHYSICS Spektra: Jurnal Fisika dan Aplikasinya Jurnal Akuatiklestari Jurnal Pengelolaan Laboratorium Pendidikan Jurnal Pendidikan Fisika dan Teknologi Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Newton-Maxwell Journal of Physics Indonesian Journal of Community Empowerment and Service
Lizalidiawati Lizalidiawati
Jurusan Fisika, FMIPA, Universitas Bengkulu Jl. WR. Supratman Kandang Limun, Bengkulu, 38371
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Penerapan Mesin Pemipil Jagung Sebagai Upaya Meningkatkan Kapasitas Produksi Kelompok Petani Jagung Di Kecamatan Kerkap Bengkulu Utara Irkhos; Liza Lidiawati
Indonesian Journal of Community Empowerment and Service (ICOMES) Vol. 3 No. 1: June 2023
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/icomes.v3i1.27909

Abstract

Kegiatan pelatihan penggunaan mesin pemipil jagung sebagai upaya meningkatkan produktifitas kelompok petani jagung di kecamatan Kerkap Bengkulu Utara telah dilaksanakan. Kegiatan ini bertujuan untuk Menyediakan 1 unit mesin pemipil jagung bagi kelompok tani di desa Tanjung Agung Palik kecamatan Kerkap untuk meningkatkan kapasitas produksi beras jagung. Metode yang digunakan dalam kegiatan ini yaitu metode pelatihan dan pendampingan. Kegiatan ini telah menghasilkan 1 unit mesin pemipil jagung daya 300 watt dengan kapasitas 15 kg/jam serta 6 orang peserta yang memiliki keterampilan dalam merancang, menggunakan serta memperbaiki kerusakan mesin pemipil jagung.
Variasi Musiman Sea Level Anomaly di Wilayah Perairan Indonesia Haryo, Julis Dani; Lizalidiawati, Lizalidiawati; Irkhos, Irkhos; Suhendra, Suhendra
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.200-207

Abstract

Indonesia's territory is located between two vast oceans, namely the Pacific and Indian Oceans as well as the two continents of Australia and the continent of Asia. As a result, Indonesia's regional climate is directly influenced by these geographical conditions. As is known, Indonesia experiences the Northwest Monsoon and Southeast Monsoon. The seasonal variations that occur include part of the aim of this research, namely to identify seasonal variations in sea surface anomalies (SLA) in three regions of Indonesia representing western, central and eastern waters using altimetry satellite image data. The coordinates of these three areas, namely, represent parts of the West Sumatra Sea (1°S – 3°S, 95°E – 100°E), Makassar Strait (5°S- 8°S, 119°E- 25°E), and the Banda Sea (5°S – 8°S, 125°E – 109°E). The data used for 30 years (1993-2022) is in the form of monthly average SLA data and processed using Panoply software to display the SLA distribution in each area as well as the SLA Time Series in the three regions. The research results show that the highest sea level rise occurred in area A (Western waters of Sumatra) with an SLA of 1.4 m with a rate of increase ranging from 0.5-1.4 m/year. In area B (Banda Sea), the SLA obtained is 1.2 m with an increase rate ranging from 0.7-1.2 m/year. Meanwhile in Area C (Makassar Strait) it is 1.3 m with an increase rate ranging from 0.7-1.3 m/year. Keywords: Sea Surfalce Height, Season variation, west, east, and middle region.
Reduksi Kadar Tembaga (Cu) pada Limbah Cair Proses Etching PCB di Laboratorium Fisika Menggunakan Metode Elektrolisis Suwardi, Suwardi; Lidiawati, Liza; Haidul, Haidul
Jurnal Pengelolaan Laboratorium Pendidikan Vol.7, No.1, Januari 2025
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.7.1.32-40

Abstract

Limbah cair di Laboratorium Fisika FMIPA Universitas Bengkulu berasal dari proses pelarutan PCB dalam Praktikum Elektronika Dasar II yang mengandung tembaga dan bersifat asam. Bila limbah ini langsung dilepas ke lingkungan, akan mengakibatkan pencemaran lingkungan. Untuk mereduksi kadar tembaga dalam limbah, perlu dilakukan pengolahan limbah dalam skala laboratorium yang dapat mengurangi bahaya di atas. Penelitian ini menawarkan metode elektrolisis untuk pengolahan limbah cair secara sederhana, mudah, dan murah. Metode elektrolisis adalah metode yang mengubah energi listrik menjadi energi kimia. Penelitian ini dilaksanakan pada Mei – Oktober 2022 di Laboratorium Fisika FMIPA Universitas Bengkulu dengan lima tahapan, yaitu preparasi sampel, merangkai peralatan elektrolisis, proses elektrolisis, analisis spektrofotometer, dan interpretasi data. Tujuan penelitian ini adalah untuk mereduksi kadar tembaga pada limbah cair proses pelarutan PCB dan menentukan parameter elektrolisis (waktu, jarak elektroda, dan tegangan listrik) yang optimum dalam mereduksi kadar tembaga limbah cair. Manfaat penelitian adalah untuk memahami mekanisme metode elektrolisis dalam mereduksi kadar tembaga pada limbah cair proses pelarutan PCB dan mengurangi tingkat bahayanya. Hasil penelitian menunjukkan bahwa elektrolisis berhasil menurunkan kadar tembaga dalam limbah cair dari 3,49 mg/l menjadi 2,87 mg/l dengan efisiensi sebesar 17,76%. Proses elektrolisis juga berhasil mengurangi tingkat keasaman (pH) limbah cair dari 1,21 menjadi 2,53. Kata kunci: limbah cair laboratorium, metode elektrolisis, proses pelarutan PCB
Variasi Musiman Tinggi Gelombang Laut di Perairan Pulau Enggano Provinsi Bengkulu Chinci, Jeniu; Lizalidiawati, Lizalidiawati; Suhendra, Suhendra; Anjasman, Anjasman
JURNAL ENGGANO Vol. 9 No. 2 (2024)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.9.2.233-246

Abstract

Enggano Island is one of Indonesia's outermost islands located in the waters west of Sumatra. Enggano Island is directly adjacent to the vast and deep Indian Ocean so that the waters are very dynamic. One of them is known that the sea waves in these waters are very volatile. This study aims to find out the seasonal variation of sea wave height in the waters of Enggano Island, Bengkulu Province. This study uses primary data in the form of sea wave height measured at Kaana Beach and secondary data for 3 years (2021-2023) in the form of monthly average wind direction and speed, temperature and density data obtained from https://data.marine. copernicus.eu/viewer/expert?view=layers&dataset=GLOBAL_ANALYSISFORECAST_PHY_001_024, sea wave height data obtained from https://data.marine.copernicus. eu/viewer/expert?view=layers&dataset=GLOBAL_ANALYSISFORECAST_WAV_001_027. Data processing uses Python Anaconda 3 software for 2D display and Microsoft Excel for time series display. The methods used in this study are descriptive and quantitative methods. The results of the study show that the sea wave height in the waters of Enggano Island varies seasonally, it can be seen that the maximum sea wave height occurs in the eastern season in August with a value of 1.5-3 m with a wind direction and speed of 5-6 m/s and 7 m/s in the southern area of the island, while the minimum wave height occurs in the western season in December with a value of 1-2 m with a wind direction and speed of 1-2 m/s blowing towards the North and West of the island. Keywords : Enggano Island, seasonal variation, high sea waves, wind speed
Perubahan Garis Pantai Rawan Gempabumi di Lokasi Terabrasi Menggunakan Data Geofisika Priscilla, Viona Azhari; Farid, Muchammad; Lidiawati, Liza; Al Ansory, Andre Rahmat
Buletin Oseanografi Marina Vol 14, No 1 (2025): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v14i1.64643

Abstract

Kabupaten Bengkulu Utara mempunyai garis pantai yang panjangnya sekitar 262,63 km dan berada di wilayah rawan Gempabumi yang ditunjukkan dengan besarnya nilai Peak Ground Acceleration (PGA > 300). Salah satu sumber daya pesisir di Kabupaten Bengkulu Utara yang memberikan manfaat bagi masyarakat setempat adalah kawasan di sepanjang pantai. Namun, manfaat bagi masyarakat sekitar terancam akibat fenomena abrasi di wilayah pesisir. Kabupaten Bengkulu Utara merupakan kabupaten ke-70 di indonesia yang rentan terhadap bencana abrasi pantai, sehingga masuk dalam kategori kabupaten yang sangat rentan terhadap bencana jenis tersebut. Desa Urai merupakan salah satu wilayah yang rentan terhadap abrasi pantai di Kabupaten Bengkulu Utara. Berdasarkan keadaan yang terjadi di Desa Urai, maka perlu dilakukan penelitian untuk mengetahui kecepatan perubahan garis pantai menggunakan data Citra Satelit dan data Seismik Pasif dalam bentuk kecepatan gelombang geser ( ) dengan menggunakan metode HVSR (Horizontal to Vertical Spectral Ratio). Hasil penelitian menunjukkan daerah yang mengalami abrasi memiliki kecepatan perubahan garis pantai pada rentang antara 1,41-5,04 m/tahun, dengan kecepatan gelombang geser ( ) antara 176,30-237,12 m/s. Daerah yang mengalami abrasi memiliki nilai kecepatan perubahan garis pantai yang tinggi yang didukung dengan nilai  rendah yang mengindikasikan klasifikasi tanah berada pada jenis tanah lunak sampai sedang. 
Climate Change Impact on Temperature, Rainfall, and Humidity in Batang Toru, South Tapanuli Siregar, Anjeli Agustina; Berliani, Riska; Abrar, Camelia Batun; Suhendra, Suhendra; Lizalidiawati, Lizalidiawati
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 69 No 1 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v69i1.526

Abstract

Batang Toru is a sub-district in South Tapanuli Regency that is vulnerable to climate change due to forest conversion to gold mining. This is thought to be the cause of climate change in Batang Toru. This study aims to determine climate variability due to the influence of gold mining in Batang Toru. This research can provide useful information for designing policies, reducing risks, and improving operational sustainability at the Batang Toru mine. The data used are monthly mean temperature, rainfall, and humidity data for 5 years before and after mining operations (1992-1996 and 2018-2022) obtained from BMKG FL Tobing Meteorological Station and NASA. The methods used are descriptive, quantitative, and correlation analysis of temperature, rainfall, and humidity data. Data processing uses Panoply software to create 2D distribution maps and Microsoft Excel to see the time series of each data. The results showed that temperature variability increased by 0.53°C. Batang Toru's rainfall variability is of the equatorial type, with peaks occurring in October and April. The average humidity value for the last 5 years was 84.88% and previously it was 82.88%. Based on the results of the study, it is known that the impact of gold mining operations has greatly affected climate variability in Batang Toru.
Penerapan Metode Geolistrik Tahanan Jenis Sebagai Upaya Mengatasi Kekeringan Di Areal Persawahan Sebagai Solusi Untuk Menentukan Posisi Dan Kedalaman Akuifer Di Desa Sumber Makmur Kecamatan Sukaraja Seluma Suhendra; Halauddin; Lidiawati, Liza; Lubis, Ashar Muda
Indonesian Journal of Community Empowerment and Service (ICOMES) Vol. 4 No. 2 (2024): December 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/icomes.v4i2.39862

Abstract

Kegiatan pengabdian kepada masyarakat di Desa Suka Makmur, Kecamatan Sukaraja, Kabupaten Seluma, Provinsi Bengkulu, mengungkap keberadaan lapisan akuifer yang potensial. Akuifer di desa ini terletak pada kedalaman relatif dangkal karena berada di dataran rendah dekat pesisir. Pembuatan sumur bor dapat dilakukan pada titik antara 240 m hingga 480 m dari titik awal pengukuran dengan kedalaman sekitar 75 m. Tujuan dilaksanakan dan dipilihnya des aini karena sawah tadah hujan yang terdapat di desa ini cukup luas dan merupakan salah satu desa yang menjadi lumbung pertanian utamanya persawahan. Pada saat terjadi kemarau Panjang biasanya areal sawah yang terdapat di des aini sering gagal panen dikarenakan kekurangan akan air yang berasal dari air hujan. Untuk mengatasi hal tersebut khususnya permasalahan akan air untuk mengairi sawah tadah hujan tersebut maka akan diupayakan dengan cara membuat sumur bor yang nantinya berfungsi untuk dapat mengairi areal persawahan terutama pada saat kemarau. Struktur bawah permukaan menunjukkan adanya tanah gambut hingga kedalaman 2 - 2,5 m. Kehadiran lahan gambut ini menyebabkan air tidak tersimpan optimal di lapisan top soil selama musim kemarau, yang berdampak pada gagal panen padi dan tanaman lainnya. Ini menjadi salah satu faktor penting yang perlu diperhatikan untuk mendukung keberlanjutan pertanian di desa tersebut.
Kajian Perubahan Garis Pantai Kabupaten Bengkulu Utara dengan Interpretasi Citra Penginderaan Jauh dan Digital Shoreline System Septianingsih, Dwi; Amalia, Isra; Johan, Septi; Lidiawati, Liza
Jurnal Fisika Unand Vol 14 No 3 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.3.218-227.2025

Abstract

The coastal area of ​​North Bengkulu often experiences abrasion and accretion processes, considering its location directly facing the vast waters of the Indian Ocean. This phenomenon can have an impact on changes in the coastline in the area. This study aims to identify changes in the coastline over time by utilizing multi-sensor satellite imagery from USGS. The focus is to measure changes in the distance of coastal areas in North Bengkulu Regency. Changes in the coastline in this area are calculated statistically using the Digital Shoreline Analysis System (DSAS). The results of the average calculation of the distance of changes in the coastline from 2014 to 2023 in North Bengkulu Regency are influenced by quite large abrasion and accretion of -20.31 meters and 21.6 meters. The impact of accretion shows a higher value than abrasion due to the addition of land (sedimentation) in a number of river estuaries in North Bengkulu Regency. Changes in the coastline are influenced by the dynamics of seasonal winds and sea waves due to the East and West Monsoons, impacting coastal settlements, infrastructure, and ecosystems such as coral reefs and mangrove forests
Analisis Data Satelit Altimetri Dalam Pemantauan Gelombang Laut di Perairan Provinsi Bengkulu Yarmanto, Risky Budi; Irkhos, Irkhos; Suhendra, Suhendra; Lizalidiawati, Lizalidiawati
Jurnal Sumberdaya Akuatik Indopasifik Vol 9 No 2 (2025): Mei
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46252/jsai-fpik-unipa.2025.Vol.9.No.2.516

Abstract

Bengkulu Province, located on the west coast of Sumatra Island and facing directly onto the Indian Ocean, causes sea waves in Bengkulu Waters to be directly influenced by its geographical conditions. Sea waves in Bengkulu Waters vary due to the influence of monsoon winds and global climate. Seasonal variations in significant wave height (SWH) obtained from altimetry satellite imagery in five regions representing Bengkulu, namely Mukomuko Waters, North Bengkulu, Bengkulu City, Seluma, and Kaur can be used to monitor sea waves. The coordinates of the five regions representing Bengkulu Waters are as follows: Mukomuko is located at 2°40'20.82" S, 100°38'47.12" E; North Bengkulu at 3°20'6.55" S, 101°4'59.68" E; Bengkulu City is located at 4°0'7.57" S, 101°31'49.10" E; Seluma is located at 4°20'0.00"S, 102° 0'0.00"E; and Kaur is located at 5°0'59.65"S, 102°49'24.50"E. The data used for five years (2018-2022) is in the form of an average daily SWH every 3 hours and is processed using Panoply software to display the distribution of SWH and time series for each of the five regions in Bengkulu Waters. The results of the study show that the highest sea waves occurred in Kaur Waters, reaching 3.9 meters in August 2022 with an average wave height of 1.73 meters. Meanwhile, the lowest sea wave height occurred in Mukomuko Waters which reached 2.7 meters in January and February 2022, with an average wave height of 0.3 meters. Sea wave height in Mukomuko Waters, North Bengkulu Waters, Bengkulu City Waters, Seluma Waters, and Kaur Waters showed an increasing trend over the past five years. The relationship between significant wave height and season shows a consistent pattern.
Wind Pattern Analysis and Its Impact on Flight Safety at Fatmawati Soekarno Airport Using Wind Rose Method (2019-2023) Agustina, Tari; Rosyid, Muhammad Ilham; Johan, Septi; Norfahmi, Siti Hairunnisa; Lizalidiawati, Lizalidiawati
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.v11i1.8465

Abstract

A study of wind patterns was conducted to minimize aircraft accidents at Fatmawati Soekarno Airport, Bengkulu City. The data was then processed using the Wrplot application to show the direction and difference in wind speed and create a wind pattern image in the form of a wind rose diagram. This study aims to analyze wind patterns and speeds at Fatmawati Soekarno Airport, Bengkulu City for a period of 5 years (2019-2023) using the Wind Rose method. Data obtained from the Meteorology, Climatology, and Geophysics Agency, Fatmawati Bengkulu Meteorology Station shows that the dominant wind direction comes from the Southeast, Northeast, and North which are influenced by seasonal changes. The results of the analysis show extreme wind speeds ranging from 2.50 - 4.70 m / s which are classified as light winds and are still safe for flight operations. With a deep understanding of this wind pattern, it is hoped that airport managers can optimize the use of runways and improve flight safety by accommodating weather conditions. The results of this study also emphasize the importance of consistent wind pattern monitoring to support risk management related to extreme weather.
Co-Authors Abrar, Camelia Batun Agustina, Tari Al Ansory, Andre Rahmat Amalia, Isra anjasman, anjasman Anwar, Anang Arif Ismul Hadi Ashar Muda Lubis Banjarnahor, Samuel Kristian Alfredo Berliani, Riska Chinci, Jeniu Edkayasa, Mardho Tillah Elfi Yuliza Elfi Yuliza Erik Ayatullah Farid, Muchammad Gerry, Muamar Haidul, Haidul Halauddin Halauddin Halauddin Haryo, Julis Dani Irkhos Irkhos Irkhos Irkohs, Irkhos Johan, Septi Lestari, Widya Novia Limbong, Rospita Naomi Nanang Sugianto Norfahmi, Siti Hairunnisa Paisal Edo Priscilla, Viona Azhari Refrizon Refrizon Rida Samdara Riska Ekawita Rosyid, Muhammad Ilham S Suwardi Satriani, Bella Septianingsih, Dwi Silaban, Angeli Siregar, Anjeli Agustina Suhendra Suhendra Suhendra Suwardi Suwardi Suwarsono Suwarsono Tuti Herawati Ulandari, Tresi Pitria Vedina Delima Purba Verojenases, Fascal Wahyuni, Ani Sri Warahma, Ella Yarmanto, Risky Budi Yulisah Dwi Putri