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All Journal J@TI (TEKNIK INDUSTRI) Jurnal AGROTEKNOLOGI PRISMA FISIKA Jurnal Media Wahana Ekonomika Jurnal Fisika Unand Metode : Jurnal Teknik Industri Jurnal Keperawatan Respati Yogyakarta Forum Bisnis dan Kewirausahaan Jurnal PRIMED:Primary Education Journal atau Jurnal Ke-SD An Jurnal Oportunitas : Ekonomi Pembangunan Jurnal Murid JPT : Jurnal Pendidikan Tematik
Novia Anggraini
Program Studi Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Tanjungpura
Religion Agriculture, Biological Sciences & Forestry Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Nursing Physics Social Sciences Other

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Tomografi Kecepatan Seismik 3D Daerah Danau Toba Menggunakan SimulPS12 Anggraini, Novia; Pujiastuti, Dwi; Aulia, Atin Nur
Jurnal Fisika Unand Vol 9 No 4 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.9.4.457-464.2020

Abstract

Gunung Toba adalah salah satu gunung purba di Indonesia yang berada di Sumatera Utara. Terdapat dua aktivitas yang mempengaruhi gunung tersebut, yaitu aktivitas vulkanik yang berasal dari magma di bawahnya dan aktivitas tektonik yang berasal dari subduksi Lempang Indo-australia. Meskipun sudah lebih dari 70.000 tahun sejak terakhir kali erupsi dan menyebabkan terbentuknya kaldera vulkano-tektonik tersebar di dunia, yaitu Kaldera Toba, aktivitas-aktivitas tersebut masih ada. Salah satu hal yang dapat dilakukan untuk mengetahui keadaan di bawahnya adalah dengan melakukan tomografi kecepatan seismik 3D. Pada penelitian ini, program yang digunakan adalah SimulPS12 dan menghasilkan tomogram anomali Vp, Vs dan rasio Vp/Vs.  Berdasarkan hasil tomografi tersebut diketahui bahwa zona lemah terdapat pada kedalaman 30 km di bagian tengah Danau Toba dan kedalaman 50 km. Adapun proses partial melting terjadi pada kedalaman sekitar 130 km hingga 50 km yang berasal dari slab subduksi di bawah Danau Toba.  Pada kedalaman 30 km, selain anomali negatif, juga terlihat pola anomali Vp dan Vs positif yang mengindikasikan keberadaan bekas konduit dari intrusi magma yang membeku. Selain itu, aktivitas seismik juga terlihat tersebar pada beberapa titik di sekitar Kaldera Toba seperti di Gunung Pusuk Buhit dan Gunung Pardepur. Toba volcano is one of the ancient volcanoes in Indonesia located in Northern Sumatera.  There were two activities having an affect on the volcano, the volcanic activity from the magma chamber beneath the Toba caldera complex and the tectonic activity from the subduction of Indo-Australia Plate. Despite the last eruption of Toba was about 70.000 years ago, the activities were still exist.  The 3D seismic tomography could be carried out to understand the conditions beneath Toba Caldera.  In this research, the data was processed using the SimulPS12 program, and tomography images obtained were from Vp, Vs, and Vp/Vs ratio.  The results showed that the weak zones were found in the depth of 30 km in the middle part of Toba Caldera and the depth of 50 km. The partial melting process was in the depth of about 130 km to 50 km beneath Toba Caldera. The depth of 30 km was also found the high anomaly of Vp and Vs which indicated the existence of the remnant conduit of solidified magma.  In addition, the other seismic activities could also be found in its vicinity, i. e., in Pusuk Buhit Volcano and Pardepur Volcano.
Pengaruh Model Pembelajaran Problem Based Learning Terhadap Hasil Belajar Siswa Mapel PAI Kelas VIII SMP Empat Lima Karanggeneng anggraini, Novia; Nikmah, Khoirotun
Jurnal Murid Vol 3 No 1 (2026): Januari
Publisher : Fakultas Agama Islam

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Abstract

Currently, many teachers still apply conventional learning models, especially in Islamic Education subjects. In today’s modern era, a more effective and relevant learning model is required. One model considered capable of improving learning effectiveness is Problem Based Learning (PBL). This study aims to determine the application of the Problem Based Learning model in PAI subjects for eighth-grade students at SMP Empat Lima Karanggeneng and to examine the effect of PBL on students’ learning outcomes. This research employed a quantitative method with a quasi-experimental approach. The research design involved two classes: the experimental class using the PBL model and the control class using a conventional model. The research instruments consisted of pretests and posttests. Data analysis used the t-test and linear regression to identify differences in average learning outcomes between the two groups. The results showed that the Problem Based Learning model significantly influenced students’ learning outcomes in the PAI subject, proven by the t-test results (t-count 11.285 > t-table 2.037) with a significance level of 0.000 < 0.05. This means that Ha was accepted and H0 was rejected, indicating a significant effect of PBL on student achievement. Moreover, the gain score of the experimental class (1.81) was higher than that of the control class (0.52). Therefore, it can be concluded that the Problem Based Learning model is more effective to improve students’ learning outcomes in Islamic education.
Co-Authors Agustina, Nur Wulan Andi Ihwan Andika, Yanwar Surya Ardika, Yanwar Surya Aulia, Atin Nur Caswito, Ade Dwi Pujiastuti Dyah Ayu Pramoda Wardhani, Dyah Ayu Pramoda Erawati, Christina Mumpuni Iwan Harsono Moh. Anshori Aris Widya Muh. Ishak Jumarang Muslihah, Diah Nita Nani Suwarni NIKMAH, KHOIROTUN Ninin Non Ayu Salmah, Ninin Non Ayu OLIEVIA PRABANDINI MULYANA Putra, Sulistyo Emantoko Dwi Rahmadhani, Risa Rasyidi, Lili Reva Maria Valianti, Reva Maria Sepri Yunarman, Sepri Siti Sriningsih Suardi, Arief Sufaidah, Siti Sukarno Taufik Hidayat Utami Wahyuningsih Yusuf, Nanang Andri Zulkarnain Zulkarnain