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All Journal Jurnal Teknik ITS Jurnal Sains dan Seni ITS Jurnal Penelitian Fisika dan Aplikasinya (JPFA) IPTEK Journal of Proceedings Series JFA (Jurnal Fisika dan Aplikasinya) Jurnal Geosaintek Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Fisika Indonesia Sewagati BULLET : Jurnal Multidisiplin Ilmu
Bahri, Ayi Syaeful
Institut Teknologi Sepuluh Nopember
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Social Sciences

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A Analisis Fosil Foraminifera Formasi Wonosari dan Formasi Oyo Pembentuk Morfologi Karst Gunung Sewu Bagian Timur Silmi Afina Aliyan; Vera Christanti Agusta; Ayi Syaeful Bahri
BULLET : Jurnal Multidisiplin Ilmu Vol. 2 No. 1 (2023): BULLET : Jurnal Multidisiplin Ilmu
Publisher : CV. Multi Kreasi Media

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Gunungsewu is one of the areas that has the second largest karst landscape in Indonesia. The diversity of morphology in the karst hill area makes this area interesting for research, especially by researchers in the field of geology. In the western region towards Gunung Kidul the formation of karst produces a morphology in the form of conical hills and in the eastern region towards Pacitan produces a morphology dominated by the formation of vertical caves. The Pacitan area is still limited in terms of information on the characteristics of the limestones that make it up, including the fossils that make up the limestones in this area. This paper describes the diversity of foraminifera fossils that make up the Wonosari and Oyo formations. Comparison of samples from the two formations, both planktonic and benthic fossils, shows the age and depositional environment of these two formations. The diversity of foraminifera fossils found in these two formations provides a new perspective on the age order in the Gunungsewu karst area. The presence of abundant Groborotalia mayeri fossils in both formations, which are well preserved, indicates that the Pacitan karst area was formed in the Middle Miocene. Meanwhile, the presence of benthic fossils indicates a deep littoral to neritic depositional environment from the Wonosari Formation and the Oyo Formation
Analysis of Formation Ronggojalu Spring and Probolinggo Active Fault Continuity with Satellite Data Gravity Method M. Erfand Dzulfiqar Rafi; M. Haris Miftakhul Fajar; M. Singgih Purwanto; Anik Hilyah; Ayi Syaeful Bahri; Helda Kusuma Rahayu
Jurnal Penelitian Pendidikan IPA Vol 9 No 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.3399

Abstract

The Ronggojalu spring, with a discharge intensity of more than 3,000L/second, makes it one of the spring with the most significant discharge in Indonesia and is the main supplier of clean water for the City of Probolinggo. From the observation of topographic maps, the existence of this spring forms a lineament with Paras Spring and Sumber Kramat with a direction of Northeast to Southwest. The presence of this lineament can indicate the existence of geological structures that play a role in the formation of spring. In addition, this lineament is in the same direction as the active Probolinggo fault identified by PUSGEN (Pusat Studi Gempa Nasional). This study aims to identify the presence of geological structures in the lineament using satellite gravity data GGMplus (Global Gravity Model) and Remote Sensing. This data is quite efficient and effective in identifying subsurface geological structures. With the SVD (Second Vertical Derivative) analysis, the residual anomaly results from the second derivative value of the Bouger anomaly so that it can show the density contrast value as an indication of the geological structure. From the results of the interpolation of satellite gravity data in the study area, the CBA (Complete Bouguer Anomaly) value range is -16.8 – 4.8 mGal. The analysis of SVD and FHD shows a significant contrast different values along the fault line that passes through the spring. The lineament density processing also shows a weak zone around the fault zone, indicating the continuity in that zone. The existence of a fault under this spring indicates the influence of the fault on the formation of Ronggojalu Spring, Paras Spring, and Keramat Spring. In addition, it is estimated that this fault is a continuation of the active Probolinggo fault.
Analysis of Formation Ronggojalu Spring and Probolinggo Active Fault Continuity with Satellite Data Gravity Method M. Erfand Dzulfiqar Rafi; M. Haris Miftakhul Fajar; M. Singgih Purwanto; Anik Hilyah; Ayi Syaeful Bahri; Helda Kusuma Rahayu
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 10 (2023): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i10.3399

Abstract

The Ronggojalu spring, with a discharge intensity of more than 3,000L/second, makes it one of the spring with the most significant discharge in Indonesia and is the main supplier of clean water for the City of Probolinggo. From the observation of topographic maps, the existence of this spring forms a lineament with Paras Spring and Sumber Kramat with a direction of Northeast to Southwest. The presence of this lineament can indicate the existence of geological structures that play a role in the formation of spring. In addition, this lineament is in the same direction as the active Probolinggo fault identified by PUSGEN (Pusat Studi Gempa Nasional). This study aims to identify the presence of geological structures in the lineament using satellite gravity data GGMplus (Global Gravity Model) and Remote Sensing. This data is quite efficient and effective in identifying subsurface geological structures. With the SVD (Second Vertical Derivative) analysis, the residual anomaly results from the second derivative value of the Bouger anomaly so that it can show the density contrast value as an indication of the geological structure. From the results of the interpolation of satellite gravity data in the study area, the CBA (Complete Bouguer Anomaly) value range is -16.8 – 4.8 mGal. The analysis of SVD and FHD shows a significant contrast different values along the fault line that passes through the spring. The lineament density processing also shows a weak zone around the fault zone, indicating the continuity in that zone. The existence of a fault under this spring indicates the influence of the fault on the formation of Ronggojalu Spring, Paras Spring, and Keramat Spring. In addition, it is estimated that this fault is a continuation of the active Probolinggo fault.
Co-Authors Adib Banuboro Ahmad Irfaan Hibatullah Alfaq Abdillah Robi Alifiansyah Faizal Amien Widodo Amir, Moh Faisal Anggi Arwin Pratama Anwar, Muhammad Khayrul Ariffiyanto, Wahyu Arwin Anggi Arya Nur Dewangga Putra B Harjo Agung Billy Dovan Yuspancana Christopher Salim Darmawan, Arif Darmawan Dewi Septanti Dihein Reksa Ikmaluhakim Dihein Reksa Ikmaluhakim Diptya Mas Nugraha Diptya Mas Nugraha Dwa Desa Warnana Dwiyanto Hadi P Eko Hadi Purwanto Fahmi Aulia Rahman Fahmi Aulia Rahman Faza Nabeel Fransiskha Wedha Prameswari Fuadur K Helda Kusuma Rahayu Hibatullah, Ahmad Irfaan Hilyah, Anik Irwan Setyowidodo, Bagus Jaya Santosa Jaka Rahadiansyah Juan Pandu G.N.R. Juan Pandu Gya Nur Rochman Lestari, Wien Lestyowati, Titis Linda Silvia, Linda M Haris Miftakhul Fajar M. Erfand Dzulfiqar Rafi M. Haris Miftakhul Fajar M. Singgih Purwanto M. Singgih Purwanto Mariyanto Mariyanto Moh Faisal Amir Moh. Singgih Purwanto Moh. Singgih Purwanto Muhammad Khayrul Anwar Muhazzib F Muthiul Padlilah Nizar Dwi Riyantiyo Paul Chemistra Paul Chemistra Pegri Aripin Pegri Rohmat Aripin Pegri Rohmat Aripin Purwanita Setijanti Putry Vibry Hardyani R Aldi Kurnia Wijaya Rika Kisnarini Rizal Taufiqurrohman Robi Alfaq Abdillah Robi Alfaq Abdillah Shofi Iqtina Hawan Shofi Iqtina Hawan Silmi Afina Aliyan Singgih Purwanto Syaifuddin, Firman Titis Lestyowati Tricahyo Agung Budi Harjo Vera Christanti Agusta Vivi Wulandari Wahyu Ariffiyanto Wahyu Setyawan Wahyudi Parnadi Widya Utama Widya Utama Wijaya, R. Aldi Kurnia