Claim Missing Document
Check
Articles

Mapping the Peak Ground Acceleration Value and Seismic Intensity in Pesisir South District Area using The Empirical Formulation of SI and Midorikawa Fauzi, Muhammad Aulia; Syafriani, Syafriani
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.v2i1.47

Abstract

The South Pesisir is an area that is prone to earthquakes, because it is in a zone that is traversed by the Sumatran fault, subduction zone and Mentawai fault. The 3 earthquake zones are areas that have an active level of seismicity from which the maximum ground acceleration value and earthquake intensity can be calculated. This research aims to determine and map the peak ground acceleration and seismic intensity values ​​to support development planning and spatial planning in the South Pesisir District area.This type of research is descriptive research, namely by collecting earthquake catalog data sourced from the USGS (United States Geological Survey) in the period 1973-2023 with coordinates -2.35°S – -1.04°N and 99.32°E – 101.27°E . The magnitude used is M ≥ 5 SR and a maximum depth of 300 Km. The method used in processing the peak ground acceleration data is the empirical formulation of Si and Midorikawa attenuation, then the peak ground acceleration and seismic intensity data output is displayed with ArcGis 10.8 software.The results obtained from calculating the higgest peak ground acceleration were in Lengayang District, Air Pura District, Pancung Soal District, and Basa IV Balai Tapan District with a value of 225.53 – 526.57 gal, while the lowest ground acceleration value was in Koto XI Tarusan District , Bayang District, North Bayang District, and Silaut District with a value of 16.15 – 27.91 gal. Meanwhile, the highest seismic intensity is in Lengayang District VIII MMI and the smallest seismic intensity is in Bayang District, North Bayang District, and Silaut District, namely IV MMI.
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.
Analysis Of Normal Stress Distribution Of Earthquakes In The Fault Segment Of The West Sumatra Region Using The Stress Inversion Method: English Daya, Ellen Kurniawati; Syafriani, Syafriani; Hamdi , Hamdi; Amir, Harman
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.v2i4.88

Abstract

West Sumatra was one of the regions on the island of Sumatra that had a high level of earthquake proneness. There were five segments of the Sumatran fault in this region. Normal stress distribution analysis could be carried out to determine tectonic activity in earthquake-prone areas. This research used the stress inversion method to identify normal stresses, which could trigger or inhibit fractures. The data used involved 17 fault plane parameters (strike, dip, rake) from earthquakes with a magnitude of ≥4.7 that occurred in the West Sumatra region from 1967-2023. The type of fault analysed was strike-slip, and the earthquake's epicenter was located on land. The results of this research provided an overview of the position and direction of normal stress due to earthquakes in the West Sumatra region. The distribution of the normal stress position of the fault segment was shown through the pressure and tension axes (P/T), with respectively sigma1, sigma2, and sigma3 having azimuth/plunge values of 353.990/4.760, 247.260/73.860, and 85.310/15.380. The direction of maximum normal stress (sigma1) is spreading in the northern part of the fault segment. In contrast, intermediate normal stress (sigma1) is situated in the western sector of the fault segment, while minimum normal stress (sigma3) is in the eastern part of the fault segment in this region. Analysis of the normal stress distribution is showing that the Talamau segment is being dominated by maximum normal stress, indicating that the Pasaman area and its surroundings are being considered vulnerable to faults and earthquakes.
Pengaruh Self Esteem, Pergaulan Teman Sebaya Terhadap Perilaku Agresif Verbal Siswa SMA Fitri, Rahmi Pramulia; Syafriani, Syafriani; Putri, Nadya Annisa
World Health Digital Journal Vol. 1 No. 1 (2025)
Publisher : Institute of Advanced Knowledge and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/wolgitj.v1i1.5

Abstract

Perilaku agresif verbal adalah perilaku yang dilakukan untuk menyakiti, mengancam atau membahayakan individu-individu atau objek-objek yang menjadi sasaran tersebut secara verbal atau melalui kata-kata dan langsung ataupun tidak langsung. Tujuan dari penelitian ini untuk mengetahui pengaruh self esteem (harga diri) dan pergaulan teman sebaya terhadap perilaku agresif verbal siswa SMA Setia Dharma Kota Pekanbaru Tahun 2024. Dari hasil observasi, didapatkan kasus perilaku agresif verbal di SMA Setia Dharma Pekanbaru. Penelitian ini bersifat kualitatif yang melibatkan 7 Informan dari SMA Setia Dharma Kota Pekanbaru. Penelitian ini menggunakan teknik wawancara. Hasil penelitian menunjukkan Hasil penelitian ini adalah adanya pengaruh self esteem (harga diri) terhadap perilaku agresif verbal siswa yang disebabkan karena pelaku memiliki harga diri tinggi secara berlebihan, hal ini membuat pelaku memiliki rasa narsistik yang berlebihan, sehingga pelaku selalu ingin dianggap sempurna dari teman-temannya. Sedangkan pengaruh pergaulan teman sebaya terhadap perilaku agresif verbal siswa dikarenakan pergaulan teman sebaya mempunyai peranan penting bagi perkembangan kepribadian seorang siswa, salah satunya untuk mengembangkan identitas diri serta mengembangkan kemampuan komunikasi interpersonal dalam pergaulan dengan kelompok teman sebaya. Disarankan kepada SMA Setia Dharma lebih meningkatkan aturan yang ada, untuk siswa SMA Setia Dharma di harapkan memperhatikan pergaulan agar tidak terpengaruh oleh hal negative, dan IKes Payung Negeri Pekanbaru menjadikan penelitian sebagai referensi dan penelitian lanjut tentang perilaku agresif verbal.
ANALYSIS OF LANDSLIDE POTENTIAL IN GUNUNG OMEH SUB-DISTRICK LIMA PULUH KOTA REGENCY USING HVSR METHOD Nabilla, Agma; Syafriani, Syafriani
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.6, N
Publisher : Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v6i2.35996

Abstract

On BPBD Lima Puluh Kota designated Gunung Omeh Sub-district as a disaster-prone area due to the detected potential of moving soil. This mobile soil causes gaps in the soil with the potential to continue to move at any time and is exacerbated by unstable soil conditions that cause the risk of landslides. Therefore, there is a need for research in Gunung Omeh sub-district on landslide potential. This research aims to analyse the landslide potential in Gunung Omeh sub-district. Data collection is limited to 9 measurement points using a set of Sysmatrack MAE seismograph sensor type S3S. The data generated is in the form of seismic wave signals which are then processed with the HVSR method using Geopsy software to produce H/V curves with parameters A0 and f0. From these two parameters, the values of soil susceptibility index (Kg) and ground shear strain (γg) are obtained. The results showed that the susceptibility index ranged from 0.26 x 10-6 s2/cm to 16.34 x 10-6 s2/cm and ground shear strain ranged from 1.32 x 10-4 to 2.15 x 10-6. Thus, the highest landslide potential is found at point 6 with the highest susceptibility index of 16.34994479 and ground shear strain of 1.32x10¬4. 
SEISMIK VULNERABILITY INDEX ANALYSIS IN NAGARI MALALAK TIMUR AS AN EFFORT TO DETERMINE LANDSLIDE POTENTIAL AREAS THE HVSR METHOD Silitonga, Yese Angga Marito; Syafriani, Syafriani
Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics AL-FIZIYA JOURNAL OF MATERIALS SCIENCE, GEOPHYSICS, INSTRUMENTATION AND THEORETICAL PHYSICS VOL.7, N
Publisher : Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/fiziya.v7i1.41253

Abstract

Nagari Malalak Timur, Malalak Subdistrict, Agam Regency has experienced landslides caused by soil movement so that the soil conditions become unstable. Landslides are also influenced by external factors such as vibrations from earthquakes and vibrations from human activities. For this reason, a study was conducted to describe the distribution of seismic vulnerability index as an effort to determine the potential landslide area. The sampling was limited to 10 measurement points using a set of seismograph sysmatrack MAE sensor type S3S. The basic principle of HVSR method is to obtain the value of Dominant Frequency (f0) and Amplification Factor (A0) by comparing the value of horizontal component and vertical component of microtremor data. From the value of Dominant Frequency (f0) and Amplification Factor (A0), the calculation of Dominant Period (T0) and Seismic Susceptibility Index (Kg) can be done. The results of research in Nagari Malalak Timur show the value of Dominant Frequency (f0) is in the range of 2.676 - 7.22 Hz. The Amplification Factor (A0) value is in the range of 1.4 - 6.563. The Dominant Period (T0) value is in the range of 0.138 - 0.373 s. The Seismic Susceptibility Index (Kg) value is in the range of 0.365 - 14.62 cm/s2. Based on the distribution of Seismic Susceptibility Index (Kg) values in the 10 research points, the highest landslide potential is in point D with a Seismic Susceptibility Index (Kg) value of 14.62 cm/s2. This causes landslides to occur at any time.Keywords: Amplification Factor, Dominant Frequency, HVSR, Seismic Susceptibility Index
Servant Leadership In Improving Teacher Performance at MAN Bondowoso Khofi, Mohammad Bilutfikal; Syafriani, Syafriani
Indonesian Journal on Education (IJoEd) Vol. 1 No. 1 (2024)
Publisher : LPPI Yayasan Almahmudi bin Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70437/ijoed.v1i1.5

Abstract

Pendidikan merupakan landasan paling penting dalam mengembangkan sumber daya manusia yang berkualitas. Pendidikan diharapkan dapat menghasilkan manusia yang cerdas, kreatif, inovatif, berpikiran terbuka, dan berkarakter baik (Khofi, 2024). Penelitian ini bertujuan untuk menganalisis peran servant leadership dalam meningkatkan kinerja guru di Madrasah Aliyah Negeri (MAN) Bondowoso serta dampaknya terhadap lingkungan pembelajaran. Metode penelitian yang digunakan adalah pendekatan kualitatif deskriptif dengan metode studi kasus. Data diperoleh melalui wawancara mendalam, observasi, dan dokumentasi. Hasil penelitian menunjukkan bahwa kepemimpinan yang menekankan kemampuan mendengarkan, empati, pemberdayaan, serta pengambilan keputusan partisipatif mampu menciptakan lingkungan kerja yang lebih kolaboratif dan mendukung pertumbuhan profesional guru. Servant leadership terbukti meningkatkan motivasi, inovasi, dan kualitas pengajaran di madrasah. Kesimpulannya, penerapan servant leadership di MAN Bondowoso efektif dalam meningkatkan kinerja guru dan kualitas pendidikan secara keseluruhan.
Strategi Humas dalam Meningkatkan Citra Positif di Sekolah Dasar Negeri Kalitapen 1 Bondowoso Khofi, Mohammad Bilutfikal; Syarifah, Zulfa Lailatus; Syafriani, Syafriani
Indonesian Journal on Education (IJoEd) Vol. 1 No. 1 (2024)
Publisher : LPPI Yayasan Almahmudi bin Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70437/ijoed.v1i1.6

Abstract

Perkembangan zaman telah mengubah berbagai bidang kehidupan, termasuk bidang kehumasan, dan perubahan sehari-hari sulit diprediksi. Situasi ini berdampak besar terhadap semua lembaga pendidikan, mulai dari sekolah dasar hingga universitas, namun juga terhadap institusi informal seperti pelatihan, kursus dan institusi lainnya. Penelitian ini bertujuan untuk menganalisis strategi humas dalam meningkatkan citra sekolah di SDN Kalitapen 1, Bondowoso, serta dampaknya terhadap hubungan dengan masyarakat. Metode penelitian yang digunakan adalah pendekatan kualitatif deskriptif dengan teknik observasi, wawancara, dan dokumentasi. Hasil penelitian menunjukkan bahwa humas sekolah memegang peran penting dalam membangun dan mempertahankan citra positif melalui beberapa strategi, seperti mendengarkan masukan masyarakat, membangun hubungan baik dengan orang tua dan masyarakat, melakukan kunjungan ke rumah siswa, serta mengadakan kegiatan yang melibatkan masyarakat seperti Achievement Day. Humas juga memanfaatkan media sosial secara efektif untuk memberikan informasi dan meningkatkan reputasi sekolah. Kesimpulannya, strategi humas di SDN Kalitapen 1 efektif dalam meningkatkan citra sekolah dan memperkuat hubungan dengan masyarakat.
Co-Authors Adzura, Nadilla Afiah Afiah Afrinis, Nur Agustina, Mia Dwi Alini, Alini Althaf, Muhammad Mahdy Alwa, MaqhviraHusna Amelia Wulandari Ananda, Lusi Septia Andi Irfan, Andi Anggraini Dhilon, Dhini Angraini, Dela Nofri Aprilla, Nia Ari Setiawan Arifianto, Nasruhan Astuti - Astuti, Haryati Astuti, Retnaning Ayu, Febri Az Zahra, Salwa Azilah, Fatimah Nur Azmi, Zul Budiman, Khoirul Cahyani, Yuyun Febri Cuyno Mellen, Renie Damanik, Haryana Darma, Wiga Aulia Darwis, Nurizah Binti Mohamed Daya, Ellen Kurniawati Defita, Ermi Dessyka Febria, Dessyka Deswari, Dini Eka Saputri, Eka Eka Setiawati Elizha, Zellvia Erlinawati Erlinawati, Erlinawati Fadhilaturrahmi Fadhilaturrahmi Faizah, Ni’ma Tri Fauzi Ahmad Muda Fauzi, Muhammad Aulia Fayzal, Muhammad Febriwanti, Mutiara Kusuma Felayati, Felayati Fitri Aulia Fitri S, Rahmi Pramulia Florentina Simalango, Nora Gunarmi Gunarmi, Gunarmi Hamdi , Hamdi Hamdi Hamdi Hamidi , M.Nizar Syarif HAMIDI, M. NIZAR SYARIF Handayani, Riska Harahap, Dhini Haryati Hardianti, Evi Harman Amir Husna, Azmi Asmaul Iis Siti Jahro Irinericy , Rani Isnaeni, Lira Mufti Azzahri Issabella, Chentia Misse khofi, Mohammad Bilutfikal Kusuma, Novy Oktaviandri Kusumawati, Nila Lasepa, Wanda Laxmi, Laxmi Leatari, Rizki Rahmawati Letmi Dwiridal Linda Susanti Linda Widyaningsih Lingga, Leny Julia lsmalinda, lsmalinda Mardhatillah, Dela Mesi, Mesi Miftahurrahmi, Miftahurrahmi Molly Wahyuni, Molly Mubasysyir Hasanbasri Muhammad Nizar Muhammad Nurman Nabilla, Agma Navelia, Zesika Intan Noorhayati, Ariyana Nur Azizah Nur Faizah, Ida Oktaviani, Yoneta Panjaitan, Nola Sari Parasandy , Ardila Parmin, Joria Percindira, Ella Dwi Prasetya, Danny Chandra Puji Hastuti Purnamasari, Yulia Puteri, Ade Dita Putri Andriani Putri, Minazri Eka Putri, Nadya Annisa Putri, Yura Chaniago Ramadhan, Syahwira Ramli Ramli Rejeki, Yunaji Sri Rizki Rahmawati Lestari Rizqi, Eka Roshifita Rusdial Marta S, Ayu Purnamasari Saibatul Aslamiah, Saibatul Sari, Rika Rosvita Septiani, Suci Setiawan, Dicko Silitonga, Yese Angga Marito Sinaga, Steven Siti Aisyah Siti Maimunah Siti Nurhayati Siwi Padmawati, Retna Sofiana Sofiana, Sofiana Sri Hardianti Sri Widiyati, Sri Sumangkut, Aprilia Meymey Suparmin Suparmin Syamsul Bachry SYARIFA SYARIFA, SYARIFA Syarifah Aini Syarifah, Zulfa Lailatus Syukrianti Syahda Taruna, Jhon Utari, Yola Vera Diane Tombokan Viora, Dwi Wahyu Ramadhan WIJOYO, HADION Williani, Shelly Yanri Wijayanti Subronto Yendri Sudiar, Nofi Yuliska, Rumi Yusrila, Yoga Z.R, Zurahmi Zulhendra Zulhendra Zulhendra, Harman Amir