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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) International Journal of Science and Engineering (IJSE) Jurnal Teknik ITS Jurnal Sains dan Seni ITS Jurnal Penelitian Fisika dan Aplikasinya (JPFA) IPTEK The Journal of Engineering IPTEK Journal of Science IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Neutrino : jurnal fisika dan aplikasinya IJOG : Indonesian Journal on Geoscience Jurnal technoscientia Jurnal Matematika & Sains JFA (Jurnal Fisika dan Aplikasinya) Jurnal Spektra JURNAL TEKNOLOGI TECHNOSCIENTIA Indonesian Journal on Geoscience Indonesian Journal on Geoscience International Journal of Social Service and Research Makara Journal of Science
Irwan Setyowidodo, Bagus Jaya Santosa
Fisika, Institut Teknologi Sepuluh Nopember Surabaya
Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences

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Journal : IPTEK The Journal for Technology and Science

 1 
Coulomb Stress Analysis of Halmahera Earthquake on June 7th 2016, Mw=6.3 and Its Correlation with Aftershocks Fathony Akbar Pratikno; Gazali Rachman; Bagus Jaya Santosa
IPTEK The Journal for Technology and Science Vol 30, No 2 (2019)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (737.048 KB) | DOI: 10.12962/j20882033.v30i2.5006

Abstract

Main earthquake with magnitude Mw 6.3, has been occurred in the West of Halmahera Island, Northern Molucca on June 7th, 2016. The activity of the Pacific plate, Eurasia plate and Indo-Australia plates trigger some earthquake around Halmahera. The purpose of the current study was to determine the Coulomb stress change of the main earthquake and predict the aftershocks’ location around it. For understanding an interaction of the faults, this study used Coulomb stress change model. Three component seismic waveform data recorded by TNTI station within 132 km, SANI station within 381.2 km, LUWI station within 478.3 km, and TOLI2 station within 617.6 km of the epicenter. This study used software ISOLA-GUI to obtain the parameters of the earthquake source. The parameters of the earthquake source were then used to determine fracture orientation, length, width and slip displacement. It was also used to calculate the Coulomb stress changes around the main shock, using software Coulomb 33. The result shows that the orientation of the earthquake fault has a dip angle of 48° to the horizontal plane and has a strike of 210° against the North. The fault length is 19.49 km, the fault width is 11.59 km and slip displacement is 49.43 cm. Based on plotting result, the main earthquake in Northern Molucca on June 7th, 2016 has positive Coulomb stress change that spread across the Northeast to the Southwest. This change is likely triggered three aftershocks with a range of Mw 4.7 to 6.2.
Identification of Soil Contamination using VLF-EM and Resistivity Methods: A Case Study Rahmatun Inayah; Bagus Jaya Santosa; Dwa Desa Warnana; Firman Syaifuddin; Juan Pandu Gya Nur Rochman; Wien Lestari; Amien Widodo
IPTEK The Journal for Technology and Science Vol 30, No 1 (2019)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (652.116 KB) | DOI: 10.12962/j20882033.v30i1.5004

Abstract

Hazardous waste is a waste with properties which can pollute and damage the environment, human health, and other living things. Lakardowo is a village that is suspected of being contamination by hazardous waste derived from industrial activities. Measurements with the VLF-EM and Resistivity method were used in this study. In addition, ground water level mapping and soil sampling in locations around the industry were conducted for the XRF test. Groundwater mapping results show that groundwater flow lead to the Northeast-South and Southwest of the industrial site. The soil samples that have been tested by XRF show the presence of heavy metals, wherein hazardous wastes generally contain various types of heavy metals that are conductive or have low resistivity values. Quantitative interpretation of VLF-EM data shows the presence of low resistivity anomalies at several measurement sites, which are suspected to have been contaminated with soil by waste. Resistivity data processing results, showing a low resistivity anomaly (≤ 3 Ω.m) located to the north (near an industrial site) and spreading towards the southwest along the measurement path. The result of a combination of quantitative interpretations of both methods, obtained, the direction of anomalous flow of hazardous waste moves southeastward and towards deeper soil coating following the direction of rock coating.
Co-Authors A. M. Miftahul Huda Abdurahman Wafi Abdurrahman Wafi Ahmat Dafit Hasim Asrori Amien Widodo Arga Nuryanto Arif Haryono Arya Dwi Candra Asmaul Mufida Bahri, Ayi Syaeful Bambang Sunardi Bambang Sunardi Bambang Sunardi Bambang Sunardi Bintoro Anang Subagyo Chi Chi Novianti Deby Nur Sanjaya Dewi Fajriyyatul Maulidah Diah Ningrum, Susi Anggraini Dwa Desa Warnana Dwi Ayu Karlina Eden Lazuardi Eka Jaya Wifayanti Emanuel Destianus Banggut Fathony Akbar Pratikno Febry Rokhman Firdaus Hardiansyah Pratama Hetty Triastuty Hetty Triastuty Hisbulloh Huda Ibrahim Ibrahim Irwansyah Ramadhani Juan Pandu Gya Nur Rochman Kurnia Amelinda Sholikha Latifatul Cholifah Lilis Eka Rachmawati M Madlazim Madlazim Madlazim Mariyanto Mariyanto Mashuri Mashuri Mashuri Mashuri Moh Ikhyaul Ibad Muhammad Iqbal Muhammad Mifta Hasan Muhammad Mifta Hasan Muhammad Mifta Hasan Nisrina Ikbar Rahmawati Nurul Mufidah Pambayun Purbandini Patar Roy Fernandes Nainggolan Pebrian Tunggal Prakosa Pramudiana Pramudiana Rachman, Gazali Radhiyullah Armi Radhiyullah Armi Rahmatun Inayah Rayhan Syauqiya Haf Riski Salim Riski Salim Riski Salim Ryandi Bachrudin Yusuf Samsul Aprillianto Sando Crisiasa Rahmawan Yanuar Satya Hermansyah Putri Sayyidatul Khoiridah Sungkono, B.J. Santosa Syaifuddin, Firman Thariq Guntoro Totok Wijayanto, Totok Uswatun Chasanah Vidya Amalia Harnindra Wafi, Abdurrahman Wahyu Tri Sutrisno Wahyu Tri Sutrisno Wiko Setyonegoro Winda Hastari Yungi Yudiar Rahman