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All Journal Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Jurnal Penelitian dan Pembelajaran Fisika J-PAI: Jurnal Pendidikan Agama Islam Jurnal Deformasi Jurnal IUS (Kajian Hukum dan Keadilan) Jurnal Pendidikan Agama Islam Al-Thariqah Nyimak: Journal of Communication JURNAL PENDIDIKAN JASMANI DAN OLAHRAGA Jurnal Penelitian Pendidikan IPA (JPPIPA) EDUFORTECH Spektra: Jurnal Fisika dan Aplikasinya JCES (Journal of Character Education Society) Kamaya: Jurnal Ilmu Agama NUR EL-ISLAM : Jurnal Pendidikan dan Sosial Keagamaan JURNAL EKSAKTA PENDIDIKAN (JEP) JURNAL PENDIDIKAN TAMBUSAI JMM UNRAM (Jurnal Magister Manajemen Universitas Mataram) Jurnal Ilmu Fisika Jurnal Menara Ekonomi : Penelitian dan Kajian Ilmiah Bidang Ekonomi Islamika: Jurnal Keislaman dan Ilmu Pendidikan SCAFFOLDING: Jurnal Pendidikan Islam dan Multikulturalisme Prosiding Seminar Nasional Teknik Mesin Jurnal Sains Riset Jurnal Ilmiah Manajemen Kesatuan AS-SABIQUN: Jurnal Pendidikan Islam Anak Usia Dini Optika : Jurnal Pendidikan Fisika JOURNAL OF BUSINESS AND ECONOMICS RESEARCH (JBE) Jurnal Inovasi Pendidikan dan Sains Jurnal Mu'allim Jurnal Pengabdian kepada Masyarakat Nusantara BAKTI BANUA : JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Real Riset Jurnal Cahaya Mandalika Al-Mashrof: Islamic Banking and Finance International Journal of Health, Economics, and Social Sciences (IJHESS) Jurnal Pengabdian kepada Masyarakat Jurnal Media Informatika Jurnal Energi Baru dan Terbarukan Education Enthusiast : Jurnal Pendidikan dan Keguruan Journal of Renewable Energy, Electrical, and Computer Engineering Journal Of Human And Education (JAHE) BAHTRA: Jurnal Pendidikan Bahasan dan Sastra Jurnal Pengabdian Ruang Hukum Journal of Language and Literature Studies El-Rusyd Journal of Applied Mechanical Engineering and Renewable Energy (JAMERE) eProceedings of Art & Design Jurnal Ilmia Widya Pustaka Pendidikan Gunung Djati Conference Series Innovative: Journal Of Social Science Research AL ULYA: JURNAL PENDIDIKAN ISLAM Al Ghafur : Jurnal Ilmiah Pengabdian Kepada Masyarakat Physics Learning and Education ISLAMIC PEDAGOGY: Journal of Islamic Education Journal of Community Empowerment Masyarakat: Jurnal Sosiologi J-CEKI FORUM EKONOMI: Jurnal Ekonomi, Manajemen dan Akuntansi Journal of Experimental and Applied Physics Varied Knowledge Journal Journal of Social, Education and Religious Studies
Hamdi Hamdi
Politeknik Negeri Sriwijaya
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Journal : Journal of Experimental and Applied Physics

 1 
Seismic Vulnerability Index Analysis In The Sub-District Of Lake Kembar, Solok Regency, As An Effort To Determine The Potential Aslided Area Using HVSR Method Percindira, Ella Dwi; Syafriani, Syafriani; Hamdi, Hamdi; Dwiridal, Letmi
Journal of Experimental and Applied Physics Vol 1 No 1 (2023): June Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v1i1.6

Abstract

Nagari Kampung Batu Dalam, Danau Kembar District, experienced a landslide caused by high rainfall and steep topography (slope). However, there needs to be more information regarding the classification of landslide potential levels that will occur. So it is essential to carry out this study to determine the soil type, sediment depth, and seismic vulnerability index. Ten microtremor data are scattered in this area. Measurements are carried out using an MAE Sysmatrack and 3D Seismic Surface Sensor, and this is done because these measurements are not difficult to carry out and do not require a large amount of money. However, there is an abundance of information that can be analyzed. Microtremor signal data were processed using Geopsy software with the Horizontal to Vertical Spatial Ratio (HVSR) method and soil profiles which stated the parameters of the shear wave velocity (Vs) and the depth of the sediment layer (H) using the ellipticity curve method. The results obtained show that the f0 value ranges from 0.6-4.37 Hz, the Amplification Factor ranges from 1.4-17.1, the sediment thickness (H) ranges from 24.5-240.8 m, and the seismic susceptibility index ranges from 1.72E-04 - 3.21E-02 cm/s2. Based on the mapping and modeling, it shows that alluvial rocks dominate the locations that have the potential for landslides.
Earthquake Intensity Determination Based on Maximum Land Acceleration in Padang City Area Using Atkinson Boore Method (2003) Linda Susanti; Syafriani, Syafriani; Hamdi, Hamdi; Dwiridal, Letmi
Journal of Experimental and Applied Physics Vol 2 No 1 (2024): March Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i1.40

Abstract

Geologically, the city of Padang had the potential for large earthquake impacts due to its location within the Sumatran Fault, Mentawai Fault, and above the Subduction Zone. The magnitude of earthquake damage was determined by soil quality factors and earthquake intensity. To determine the extent of damage, the maximum ground acceleration value was used. This value represented the maximum ground vibration acceleration that occurred at a specific location within a particular area, resulting from all earthquakes that occurred during a specific time period. The maximum ground acceleration value and earthquake intensity in the Padang City area could be calculated using the Atkhinson Boore (2003) method. This study was a quantitative research that commenced by examining relevant theories related to the issue at hand. The research then proceeded with the collection of secondary data obtained from the United States Geological Survey (USGS) website. Specifically, earthquake data for the period between 2000 - 2020 in the Padang City area with coordinates LS- LS and BT- BT, and a magnitude M ≥ 5.0 SR depth < 100 km were utilized. Historical earthquake data was employed to determine earthquake intensity values, which were then used to assess the earthquake risk in the Padang City area. Based on the calculation results, the maximum acceleration value of soil was found between 0.519001 g- 0.603847 g. The highest value of maximum acceleration of soil was located in Bungus Teluk Kabung area, while the lowest value was found in Koto Tangah area. The distribution of earthquake intensity (MMI) in Kota Padang area has a value of VIII MMI.
Seismotectonic Analysis and Seismic Potensial of The Sumatra Region Using The Guttenberg-Richter Method Yusrila, Yoga; Syafriani, Syafriani; Hamdi, Hamdi; Dwiridal, Letmi
Journal of Experimental and Applied Physics Vol 2 No 1 (2024): March Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i1.46

Abstract

Sumatera is one of the most seismically active regions in Indonesia. This is due to the presence of subduction zones and active faults that influence the plate tectonic activity of the region, resulting in many earthquake events that cause damage and loss. One of the efforts to mitigate earthquake disasters is the analysis of seismotectonic parameters, which are indicated by the a-value and b-value of the Gutenberg-Richter equation in the earthquake frequency-magnitude relationship. Low seismotectonic parameters (a-value) and (b-value) can be interpreted as low seismic activity and high local rock stress conditions, and vice versa high (a-value) and (b- value). In this study, the analysis was performed spatially and temporally from the National Earthquake Information Center United States Geological Survey (NEISUSGS) earthquake catalogue. The data obtained in the form of longitude, latitude, depth, magnitude, time and location of the earthquake event, the data are limited to M ≥ 4.0Mw and Depth ≤ 350KM in the Sumatera region with the boundaries of 6030'LU-6°30'LS and 94BT-106°BT for the period 1990-2022. Based on the estimation results of the Guttenberg-Richter method in ZMAP v6 software, the b-value is 0.92-1.04 and the a-value is 7.42-7.97, with a return period of 6.5 Mw earthquakes generally ranging from 5-25 years.
Consistency of Magnetic Susceptibility Values in Raw Mix 2 using Bartington Magnetic Susceptibility Meter Sensor Type B Kolotosa, Julio Fadjar; Hamdi, Hamdi; Mufit, Fatni; Dwiridal, Letmi
Journal of Experimental and Applied Physics Vol 2 No 2 (2024): June Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i2.52

Abstract

The process of making cement goes through quite long stages, one of the processes is grinding at the Raw Mill. Raw Mill is divided into two large groups, Horizontal Mill and Vertical Mill, in Horizontal Factory. The milling result at the Horizontal Mill is Raw Mix 2 and quality testing will be carried out. In quality testing, testing is usually carried out on chemical parameters and there is no testing based on physical parameters. By looking for the magnetic susceptibility score of raw cement samples in Raw Mix 2 using the Bartington Magnetic Susceptibility Meter Type B sensor, you can see the consistency of magnetic minerals in raw cement in Raw Mix 2. Samples were taken from the Padang Semen Factory every hour of every day from February 1 to February 10, 2022, the samples were then measured using the Bartington Magnetic Susceptibility Meter Type B Sensor. The measurement results showed that the magnetic susceptibility value of Raw Mix 2 ranged from 79.8 x/kg to 206.9 x/kg, and standard deviation calculations were used. The data is interpreted into a graph and it shown that the magnetic susceptibility value of Raw Mix 2 obtained can be said to be consistent and of good quality. The magnetic properties of Raw Mix 2 obtained according on the magnetic susceptibility score obtained are antiferromagnetic. The grain type in Raw Mix 2 was found to have almost no superparamagnetic grains or contained less than 10% superparamagnetic grains.
Microzonation of Seismic Vulnerability In Padang Panjang Timur Sub-District, Padang Panjang City Based on Microtremor Measurement Elizha, Zellvia; Syafriani, Syafriani; Hamdi, Hamdi; Dwiridal, Letmi
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.70

Abstract

Padang Panjang City is one of the cities in West Sumatra which has a high level of risk of the natural phenomenon of earthquakes. This is due to the fact that it is traversed by the active Sumatran fault which can cause earthquakes at any time. The purpose of this study was to determine the value of the seismic vulnerability index in Padang Panjang Timur District, Padang Panjang City using microtremor measurements. This type of research is descriptive research, namely research that describes the symptoms or phenomena studied. The location for data collection was Padang Panjang Timur District, Padang Panjang City, West Sumatra Province. There are 15 data collection points, and the distance between points is 500 m. The microtremor method of measuring this microtremor can determine the dominant frequency value (f0), amplification factor (A0), and susceptibility index value (Kg). Microtremor data processing was used to obtain the H/V curve at each point of data collection using Geopsy software. The results of the microzonation of the seismic susceptibility index (Kg) ranged from 1.05 × 10-6 s²/cm to 170.09 × 10-6 s²/cm. High seismic vulnerability index values ​​are found in the Koto Panjang Sub-District, Tanah Pak Lambik Sub-District, Guguk Malintang Sub-District, Ngalau Sub-District and Ganting Sub-District.
Evaluation of Pumice Source from Lubuk Basung Based on Magnetic Susceptibility Values Febriwanti, Mutiara Kusuma; Hamdi, Hamdi; Fauzi, Ahmad; Syafriani, Syafriani
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.80

Abstract

Lubuk Basung is one of the distribution areas of pyroclastic material from the Maninjau Caldera eruption that occurred 50,000 years ago and produced two different types of white pumice. The research purpose is to reveal whether the pumice samples taken from Lubuk Basung come from the same eruption or not based on susceptibility of magnetic scores. The susceptibility of magnetic scores can be measured by the Rock Magnetic Method using the Bartington Magnetic Susceptibility Meter Type B. From the magnetic susceptibility values obtained, normality test, homogeneity test, and mean similarity test of two different samples were conducted using IBM SPSS Statistics software. In the LBS 23-02 sample, a susceptibility of magnetic range of 41.9 x 10-8 m3/kg to 582.2 x 10-8 m3/kg was obtained, and the LBS 23-03 DB sample obtained a magnetic susceptibility value of 42.9 x 10-8 m3/kg to 535.5 x 10-8 m3/kg. From the normality, homogeneity, and mean similarity test, it is known that the LBS 23-02 and LBS 23-03 DB samples come from a population that is not distributed normally and not homogeneous, but an average comparison is obtained with a score of significance at 0.0426, which can be concluded that the two pumice samples found in Lubuk Basung come from the same eruption source, although each sample has different types and characteristics.
Determination of the structure and crystallite size of pumice magnetic minerals from Ngarai Sianok using X-Ray Diffraction (XRD) Azizah, Nur; Hamdi, Hamdi; Syafriani, Syafriani; Dwiridal, Letmi
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.86

Abstract

The structure and size of crystal are are important aspects of magnetic minerals pumice from Ngarai Sianok  to understand the geological processes of the area. Volcanic rocks in Ngarai Sianok contain magnetic minerals with unknown crystal structures. The crystal structure and size in pumice are analyzed using X-Ray Diffraction (XRD), where the type of magnetic mineral and crystal structure are determined by comparing the data measurement with the mineral database, while the crystal size can be determined using the Scherrer equation. Magnetic minerals in pumice from Ngarai Sianok are magnetite (Fe3O4) with a cubic mineral structure, ilmenite mineral (FeTiO3) with a hexagonal structure, and hematite mineral (Fe2O3) with a rhombohedral structure. The crystal size of magnetic minerals vary. The lowest is at an angle of 18.25 with a FWHM value of 0.1279 which results in a crystal size of 62.8995 nm. The highest crystal size is at an angle of 35.46 with a FWHM value of 0.0624, resulting in a crystal size of 133.6609 nm. FWHM value is inversely proportional to the size of the crystal, meaning that the size of the crystal formed is getting smaller with increasing FWHM. The average size of pumice crystals formed in Ngarai Sianok was calculated to be 102.6392 nm, the small crystal size indicates the rapid cooling of magma, usually occurring during explosive eruptions.
Magnetic Susceptibility of nanoparticles in the Lubuk Basung Region Janna, Anisa; Hamdi, Hamdi; Amir, Harman; Zulhendra, Zulhendra
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.87

Abstract

Nanoparticles is particles that have size very small, generally in range from 1 to 100 nanometers. Nanoparticles have one​ uniqueness with exists characteristic superparamagnetic. Characteristic superparamagnetic is properties the material has magnetization tall if given external magnetic field, however when No There is external magnetic field mark the average magnetization is zero. On size certain, nanoparticles can show transition from superparamagnetic to ferromagnetic or antiferromagnetic. Influence size grain and structure crystal to characteristic magnetic is one​ method in determine susceptibility. Susceptibility magnetic is defining constant​ big small a material to magnetized. Study This aim to the analyze mark susceptibility magnetic from nanoparticles rock floating in the area Lubuk Basung. Method used​ is method magnetism rock with tool Bartington Magnetic Susceptibility Meter Type B. Research results shows in the area Lubuk Basung LBS 23-02 and LBS 23-03 are available concentration content high Fe element and concentration content element Ti more low. Magnetic susceptibility in the area Lubuk Basung have characteristic antiferromagnetic magnetism, and has type grain almost no There is details superparamagnetic and also has mixture superparamagnetic and granular rough or details superparamagnetic <0.05 μm equivalent with <50 nm. So that depicted that size nanoparticles contained in the sample rock floating LBS 23-02 and LBS 23-03 have size nanoparticles below 50 nanometers with characteristic antiferromagnetic magnetism.
Co-Authors Abdul Azis Abdul Kadir Abdullah Thaidi, Hussein 'Azeemi Addriani, Ranti Aditya Alqamal Alianta Aditya Pratama AHMAD HULAIMI, AHMAD Ahmad, Nisar Mohammad Ahzari, Serli Akhmad Supriadi, Akhmad Akob, Rezky Arianti Ali Iskandar Zulkarnain, Ali Iskandar Almauiza, Monica Ihksan Amalia, Fitriani Amil, Amil Amin, Gazali Aminwara, Rena AMRIZAL SALIDA Amrulloh, Rifqi Angelia Lionardi Aqmarina, Nur Ari Nuryadi Ariani, Zaenafi Arjuna, Arjuna Arrahman, Rudi Ash Shadiq Egim Asnafiyah, Asnafiyah Ayu Permata Sari Bahri Yamin Charina Sizi, Baiq Rara Cori Qamara Dafrimon Dafrimon Debineva, Ferena Dede Aprylasari Dewi Puspa Sari, Dewi Puspa Dewi, Anies Prima Edi Yanto, Edi Eka Putri, Syora Alya Elizha, Zellvia Emafri, Wenda Emiliannur Emiliannur Ervi, Tivani Shakilla Erwin Erwin Fadlina Fadlina Fadlina Fahmi, Ria Susyatul Fajri, Lalu Moh. Nazar Fata, Akramul Fatni Mufit Fauzi Ahmad Muda Febriwanti, Mutiara Kusuma Festiyed Fidan Safira, Fidan Fikri, Luthfi Rijalul Fiorini Mantika, Aesthetica Fitra, Aidil Fitri, Nisa Cantika Franklin Asido Rossevelt Ginting, Simson Gunardi, Setiyawan Habiburrahman Habiburrahman, Habiburrahman Hamdanah Hamdanah Hapsoro, Cahyo Aji Haq, Hilman Syahrial Harijadi, Soegeng Hariyanto, Yensi Harman Amir Hartati , Zainap Hasan, Israhadi Helmi, Gilang Firdaus Herlambang, Medhika Putra Hery Widijanto Hidayanti, Nur Fitria Hirahmah, Atifah Huda, Ali Anhar Syi'bul Huda, Ali Anhar Syi’bul Husna, Azmi Asmaul Husna, Zahratun I Putu Gede Didik Widiarta Iffah, Izzatul Ilyas Ilyas IMAWANTO, IMAWANTO indrayani, tri irfa Irma, Rima Iryanto, Febby Putri Jamalullail, Jamalullail Janna, Anisa Jasiah Jasiah Jayen, Fredi Junaidi Junaidi Junia, Retna Junianto Karsudjono, Anthonius Kastalani, Kabid Khairiyah, Habibatul Khairurrozi, Khairurrozi Khalifah, Yuliani Khosiah Khosiah, Khosiah Kolotosa, Julio Fadjar Kristiandi, Kiki Kumar, Prodib Kurniawan Wawan Hasanuddin Kurniawati Kurniawati Lathif, Nur Muhammad LELISARI, LELISARI Letmi Dwiridal Linda Susanti Luklu’il Maknun, Baiq Jannati M. Adib Zata Ilmam M. Mahbubi M. Syafii Mantika, Aesthetica Fiorini Mariam Saidona Tagoranao Mariati Mariati Maryam Maryam Maryani, Sri Mas'ad Saleh, Muhammad Aunurrochim Masyhuri Masyhuri Maulida, Shofi Mazrur, Mazrur Merni, Merni Mochammad Sahid, Mualimin Moh Nazar Fajri Mohamad Ali, Norfadhilah Mohammad Ahmad, Nisar Mohammed Hasan, Baidar Mohammed Mohd Salleh, Mohd Mahyeddin Mualimin Mualimin Muchsin Muchsin Muh. Syamsurriadi Muhammad Arifai Muhammad Nasir Muhammad, Saiful Muhippuddin, Muhippuddin Muhirdan Muhirdan Munir, Usman Mustaking, Mustaking Muztaza, Nordiana Mohd Nabila, Putri Nadhira, Rizka Nagari, Ukhti Paundria Naimah Naimah Najmiah, Najmiah Nandika, Reisa Siva Ni Made Novi Suryanti Nik Saleh, Nik Salida Suhaila Nofi Yendri Sudiar Noorazmah Hidayati, Noorazmah Nugroho, Muhammad Alif Aditya Nur Azizah Nur Fitriana Nur Rahmah Wahyuddin Nuradila, Nuradila Nurhuda, Abid Nurjanah Potaboga, Siti Nurjannah Nurjannah Nurmiwati, Nurmiwati Nurul Halimah Nurwijayanti Nuryutika, Nuryutika Pakhrur Razi Pambudi, Ndaru Rilo Pangestu, Kurniawan Aji Percindira, Ella Dwi Prihatin Lumbanraja Putra, Nafiza Samditya Qurani Putri, Dinda Mutiara Rachman, M. Taufik Rahmadhani, Annisa Rahman, Bayu Kurnia Rahmi, Mulia Revias, Revias Riche Fermayani Ridani, Muhammad Noor Ririn Febrina Riska Arnas Riyan, Lalu Riyasni, Selma Rizal, Setria Utama Rizki, Sarah Rohani Inta Dewi Rustam Effendi Sadraini, Aini Saffinee, Siti Syahirah Safitri, Delvia Saful , Muhammad Sahrul, Sahrul Salleh, Ahmad Zaki Sam Hermansyah Santiani Santiani Saputri, Deby Yeriza Sarudi, Sarudi Selvia Nelis, Selvia Septiani, Fadilla Setria Utama Rizal Shalihah, Ni’matush Sigiro, Oktavia Nurmawaty Siti Zulaikah Sofya, Rani Sri Aulia Noprianti, Nadia Suadi, Daeng Achmad Suherman Slamet Sukamto, Ika Sumiyarsi Sulaiman, Muhammad Sulistyowati Sulistyowati Supardi Supardi Supryadi, Ady Surono Surono Syabrina, Muhammad Syafii, M. Syafriani Syafriani, Syafriani Syafril Syafril Syarifudin Syarifudin Syi'bul Huda, Ali Anhar Tajudinnur, Tajudinnur Tanjung, Ridho Aulia Taufik Warman Mahfuzh, Taufik Warman Teguh, Priya Tina Lestari Tri Wijayanti Trimurni, Februati Trisma, Elsi Tritisari, Angga Wahidah, Ananda Wasrika, Rifi Wook, Izawati Yasar, Muhamad Yendri Sudiar, Nofi Yulhendri Yulhendri Yuliani, Tin Yunita, Rika Arni Yusrila, Yoga Zaenafi, Zaenafi Zaenul Wahyudi Zainal Abidin Pakpahan Zainap Hartati, Zainap Zaini Ramdhan Zakiah Zakiah Zakly, Hanif 'Izzudin Zuhdiyyah, Halimah Zulhendra Zulhendra