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All Journal International Journal of Renewable Energy Development BERKALA FISIKA SAINS DAN MATEMATIKA Jurnal Ilmu Lingkungan Jurnal Perikanan dan Kelautan YOUNGSTER PHYSICS JOURNAL Jurnal Teknik Sipil Scientific Journal of Informatics Jurnal Manajemen Pendidikan (JMP) International Journal of Artificial Intelligence Research Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis Solidaritas Jurnal Akuatiklestari Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan e-Jurnal Rekayasa dan Teknologi Budidaya Perairan Journal of Physics and Its Applications JSiI (Jurnal Sistem Informasi) Jurnal Pengembangan Riset dan Observasi Teknik Informatika Dialogia: Jurnal Studi Islam dan Sosial Jurnal Sains Teknologi Akuakultur Journal of Machine Learning and Soft Computing Journal of Tropical Marine Science Jurnal Fisika Indonesia Jurnal Ners Jurnal Abdi Insani Jurnal Ilmiah Abdi Mas TPB Unram Jurnal Kesehatan Tambusai Arwana: Jurnal Ilmiah Program Studi Perairan JOURNAL LA MEDIHEALTICO Journal of Islamic Philanthropy and Disaster Journal of Community Development and Disaster Management Journal of Communication Studies Jurnal Al-Qayyimah Academic Physiotherapy Conference Proceeding Mandala of Health : A Scientific Journal Jurnal Keperawatan Jurnal Riset Rumpun Ilmu Sosial, Politik dan Humaniora (JURRISH) Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Social Science Academic Journal of Community Service and Society Empowerment Proceeding of International Conference of Islamic Education Global Forest Journal Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Oftalmologi: Jurnal Kesehatan Mata Indonesia Economic, Accounting Scientific Journal (CASH) Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Community Services and Engagement: Voice of Community (VOC) Jurnal Perikanan dan Kelautan Jurnal Perikanan JLTLL
Agus Setyawan
Department Of Physics, Faculty Of Science And Mathematics, Diponegoro University, Semarang
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INTERPRETASI POLA ALIRAN FLUIDA PANASBUMI MENGGUNAKAN METODE SPONTANEOUS-POTENTIAL (SP) DAN SUHU PERMUKAAN DANGKAL PADA SISTEM PANASBUMI PAGUYANGAN KABUPATEN BREBES Yayan Yuliananto; Agus Setyawan
Youngster Physics Journal Vol 4, No 1 (2015): Youngster Physics Journal Januari 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Fluid flow and temperature researchs has been done in Paguyangan geothermal manifestation based on spontaneous-potential and shallow surface temperature methods. An aims of research is to determine the pattern of fluid flow and shallow surface temperature distribution in the Paguyangan area, Brebes.Data acquisition for spontaneous potential measurement used fixed electrode configuration with 15 meters interval distance divided into 3 lines. Shallow surface temperature measurement which taken in 75 cm depth in around of Paguyangan manifestation area. Spontaneous potential anomaly and shallow surface temperature anomaly analyzed by correlated spontaneous potential, shallow surface temperature and rocks lithology in Paguyangan manifestation.  The Result shows that spontaneous potential values obtained has range between -11 to 11 mV and temperature range between 24° to 70° C. Fluid flow has a depth range between 13,42 to 28,75 meters and range between 8,21 to 30,33 meters with a tilt range between 46,06° to 12,60°. The pattern of fluid flow leads to the northwest.Keywords: Spontaneous-Potential, shallow surface temperature, Pattern of fluid flow, Paguyangan
Identifikasi geological strike dan dimensionalitas berdasarkan analisis phase tensor untuk pemodelan 2D magnetotelurik di lapangan panas bumi “GYF” Ganap Y. Febrika; Agus Setyawan; Muhammad Irham Nurwidiyanto; Imam B. Raharjo
Youngster Physics Journal Vol 6, No 2 (2017): Youngster Physics Journal April 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Magnetotellurics method is frequently used in exploration of geothermal resources for determining the subsurface resistivity distribution of the Earth. An accurate representation of the Earth’s resistivity structure can be obtained by knowing the direction of geoelectrical strike and dimensionality structure prior to modelling. Besides those both cases, distortion in the data magnetotelluric can lead to errors of interpretation. Therefore, this study was conducted to identify the geoelectrical strike direction and dimensionality structure in the “GYF” geothermal field using phase tensor analysis prior to 2D modelling. Three invariant parameters of phase tensor i.e ellipticity, phase tensor skew angle (β) and Azimuth of phase tensor maximum (α-β) are used to get the information about the dimensionality and geoelectrical strike direction on 65 magnetotelluric data in “GYF” geothermal field. Results of the phase tensor analysis show that the direction of geoelectrical strike is N60°W or 300° at frequency (10-0,2 Hz) and dimensionality of subsurface structure consists of a structure 1D, 2D and 3D. Structure of 1D and 2D is in the frequency range 320 to 0,2 Hz, while the 3D structure is at a low frequency, ie f < 0,2 Hz. Identification of geoelectrical strike and dimensionality in 2D magnetotelluric modelling can minimize misinterpretation.Keywords: Dimensionality, geoelectrical strike, distortion, phase tensor
INVERSI AMPLITUDE VERSUS OFFSET UNTUK MENGETAHUI PENYEBARAN HIDROKARBON Di LAPANGAN “X” Muhammad Nur Handoyo; Agus Setyawan; Mualimin Mualimin
Youngster Physics Journal Vol 2, No 2 (2013): Youngster Physics Journal April 2013
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Inversion of AVO (Amplitude Versus Offset) can be used to identify and maping the spread of hydrocarbons on seismic data. The research was conducted on the field "X" TAF layer Talang Akar’s  formation’s  North West Java basin. AVO inversion performed to obtain angle stack, intercept, gradient and fluid factor attribute. The results of the angle stack analysis indicate AVO anomaly in TAF layer’s. Based on the crossplot between the intercept with the gradient, TAFlayer’s included in Class III AVO anomaly. The results of fluid factor analysis showed TAF layer’s has a negative value, that is estimated to have hydrocarbon potential Key words: Amplitude Versus Offset (AVO),angle stack, intercept, gradient, fluid factor.
INTERPRETASI STRUKTUR BAWAH PERMUKAAN MENGGUNAKAN METODE GEOLISTRIK KONFIGURASI SCHLUMBERGER DI AREA MANIFESTASI PANAS BUMI KALIULO, GUNUNG UNGARAN Dewi Mariyaningsih; Agus Setyawan
Youngster Physics Journal Vol 3, No 1 (2014): Youngster Physics Journal Januari 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Geoelectric method is one of the geophysical methods that used in the exploration of natural resources below the surface. The research has finished by using geoelectric method schlumberger configuration in Kaliulo geothermal manifest area. Kaliulo is one of geothermal manifest which exist in geothermal system of Ungaran Mountain. The purpose of researching is to know layer of subsurface structure which control Kaliulo geothermal manifest.Field measurement data in the field are potential differences and currents which can be used to calculate apparent resistivity value. After apparent resistivity value is created then processed using IPI2WIN program to know resistivity value in each layer with geology information validation. Geoelectric resulting indicates normal faults which weak zones where fluid discharge to surface.Keyword: geoelectric, geothermal, Kaliulo, Ungaran Volcano
INTERPRETASI BAWAH PERMUKAAN GUNUNG MERAPI DENGAN ANALISA GRADIENT DAN PEMODELAN 2D DATA GAYABERAT Wisnu Agung Permadi; Agus Setyawan; Ilham Nurdien
Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Gravity method research has been done in Merapi Volcano area. The data has been measured by BPPTKG Yogyakarta team with the number of point as much as 164 points. The aim of this research are to identify the subsurface structure and locate the position of Merapi Volcano magma chamber, so that a gradient analysis and 2D modelling based on Bouguer anomaly has been done. Gradient analysis apply first horizontal and second vertical gradient that is used to know the location and the type of structure on the research area. The result from this research show Bouguer anomaly with range value around -8.79 mGal to 305.46 mGal. The 2D modelling show Merapi volcano subsurface model that consist of 5 layers with the position of magma chamber is located in the third layer about 3300 m below the Merapi summit or 700 m below the mean sea level. Based on gradient analysis, there is a normal dipfault structure. This faults is indicated to be formed a basin on the Merapi summit toward westward leading directly to the Patuk Alap Alap Mountain and Kali Krasak.
APLIKASI METODE COMMON REFLECTION SURFACE (CRS) UNTUK MENINGKATKAN HASIL STACK DATA SEISMIK LAUT 2D WILAYAH PERAIRAN “Y” Hirafiany Daruartati; Agus Setyawan; Istiqomah Ari Kusuma
Youngster Physics Journal Vol 4, No 4 (2015): Youngster Physics Journal Oktober 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Stacking is an important phase in the seismic data processing, it’s a tool or quick look before subsurface section resulted. Common Reflection Surface is the developing of the conventional processing that has been generally done. CRS method has more benefits than conventional stack method, specially on the complex structure and do not rely on from velocity model that’s really useful for seismic data processing. The main difference between CRS and conventional stacking mode is on stack parameter decision or the attribute connected to subsurface reflector. CRS application has been applied in the area “Y” using software ProMAX 2D. In this research by using marine seismic data has done five times using different apperture values, they are 150 m, 100 m, 67 m, 33 m, and 20 m for getting the best stack result. Based on the research can be concluded that CRS method has applicated successly on the 2D marine seismic data having a better result than by using conventional method, proved by CRS method stack result can show the better reflector continuity and it increases the signal to noise ratio qualitative.
ANALISA MODEL KECEPATAN DENGAN PRE STACK DEPTH MIGRATION PADA LAPANGAN ‘X’ Dimas Sidiq Baskoro; Agus Setyawan; Bambang Mujihardi
Youngster Physics Journal Vol 5, No 2 (2016): Youngster Physics Journal April 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Analysis on Pre - Stack Depth Migration ( PSDM ) has been applied in the data field " X " on line 11 and 48.  Pre - Stack Time Migration ( PSTM ) often get  discontinuity of reflector caused by lateral velocity variations and complex geological structure . It can be overcome by processing the data using an accurate velocity model . Pre- Stack Depth Migration has done by using the velocity model obtained from a tomography velocity models that reflect the actual state of the earth . PSDM able to show better results compared with the results of PSTM , which is able to confirm the continuity of reflectors and more coherent resolution. Keyword:  PSDM, PSTM, lateral velocity variation
IDENTIFIKASI BIDANG GELINCIR DENGAN METODE TAHANAN JENIS KONFIGURASI DIPOLE-DIPOLE DAERAH BAMBANKEREP NGALIYAN SEMARANG Aliyatarrafiah Aliyatarrafiah; Agus Setyawan; Sugeng Widada
Youngster Physics Journal Vol 3, No 4 (2014): Youngster Physics Journal Oktober 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Shallow exploration of subsurface commonly use resistivity method which the electricity principles in the earth. The aims of this research are identify slip surface and slope safety factor at Pucung Bambankerep Ngaliyan Semarang using dipole-dipole configuration. The results of measurements are voltage and electric current to calculate the apparent resistivity value then processed by RES2DIV software for determine the lithology and the slip surface area. The value of slope safety factor was 1,332 from modelling by Rockscience software. The results present that lithology in the study area consist of clay, sand, sand gravel, and breccia. There is a slip surface at a depth of between 1,20 to 6,10 m.  Keywords: slip surface, Rockscience, resistivity, dipole-dipolee
IDENTIFIKASI LITOLOGI RESERVOIR BATUPASIR MENGGUNAKAN INVERSI IMPEDANSI ELASTIK DI LAPANGAN “D” PADA FORMASI TALANG AKAR DENGAN KEDALAMAN 2780 – 2805 METER, CEKUNGAN JAWA BARAT UTARA Dita Aprilina; Agus Setyawan; Mualimin Mualimin
Youngster Physics Journal Vol 3, No 1 (2014): Youngster Physics Journal Januari 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Elastic Impedance (EI) inversion has been used to determine sandstone lithology distributions in “D” Field of Talang Akar Formation, North West Java Basin. The target zone was TAF-3-1 with depth 2780 m - 2805 m which located in Talang Akar Formation with litologies of sandstone and shale.            Sensitivity analysis is method to separation of sandstone and shale lithology between Elastic Impedance log and Gamma Ray log crossplot at the angle 0º-30º. Analysis at seismic data is inversion result analysis on vertical and to knowning the value of Elastic Impedance and inversion result analysis on horizontal to knowing the direction of sandstone reservoir lithology.            Result of Elastic Impedance inversion shows that sandstone reservoir lithology in target area TAF-3-1 layer have value of Elastic Impedance from 1314 g.m/cm3s - 1410 g.m/cm3s, which can be seen in the vertical cross section of Elastic Impedance. Lithology distribution in lateral showed that reservoir of sandstone in Northwest–Southeast of study area around of well TA-01.Keywords : Elastic impedance inversion, elastic impedance, sandstone, Talang Akar Formation
IDENTIFIKASI STRUKTUR BAWAH PERMUKAAN AREA MANIFESTASI PANAS BUMI AIR PANAS PAGUYANGAN BREBES MENGGUNAKAN METODE GEOLISTRIK DENGAN KONFIGURASI SCHLUMBERGER Agnis Triahadin; Agus Setyawan
Youngster Physics Journal Vol 3, No 4 (2014): Youngster Physics Journal Oktober 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Geothermal systems as the renewable energy can be indicated by the presence of surface manifestations, such as hot spring water in the Kedungoleng village, Paguyangan Brebes. The hot spring water temperature reaches 740 C is the outflow zone of Mount Slamet geothermal system. Resitivity method is one of the geophysical methods to study subsurface structures based on the electrical properties of rocks. The purpose of this study is to identify the subsurface geological structure in the area of geothermal manifestations Paguyangan based on resistivity method using Schlumberger configuration. Data acquisition process was performed by 5 sounding points with a length of 400 metre for each points. The field data consist of current, voltage and apparent resisitvity were processed using inversion method from IPI2Win software to determine the true resistivity values. Rock lithology and geological structure were analyzed by correlating resistivity and local geological information.The lithology of research area are topsoil with the resistivity is 9,91 to 114 ohm-metre then Sandstones with the resistivity is 0,756 to 6,91 ohm-metre. The next is Shale with the resistivity is 45,1 to 107 ohm-metre and Marl is 31 to 92,3 ohm-metre. The hot spring water is controlled by fault structure which a detected depht approximately 130 metre. Moreover, the Sandstone roles as permeable layer which contains the thermal fluid.Keywords: Fault, geothermal, lithology, Paguyangan, resistivity, and Schlumberger
Co-Authors A. Suhandi A.A. Ketut Agung Cahyawan W Achmad Samsudin Achmad Supriyadi, Achmad Adi Nugroho Agnis Triahadin Agnis Triahadini, Agnis Agung Prasetyo Agus Subagio Agus Susilo Agustina, Cynthia Ahwy Oktradiksa Akbar, Shofya Alfina, Ria Aliyatarrafiah Aliyatarrafiah Althafunnisa, Namyra Aisha Aman Damai, Abdullah Anik Fitrochaton Chasanah Ansori, Teguh Arif, Mas Achmad Syamsul Arlanda, Revilarita Asri Nurdiana, Asri Astuti, Andriani Mei Azis, Latif Saiful Azizah Azizah Azizi, Sandi Bambang Mujihardi Baroek, Marino Christiano Berta Putri Boko Nurdiyanto Brandan Tito Ramadhan Choirul Wahid, Imam Mustofa D Febrianty Dadan Dani Wardhana Damai, A Aman Dave Emmanuel Haning Dewi Mariyaningsih Dhana Hastuti Dimas Sidiq Baskoro Dita Aprilina Djalal Er Riyanto Dwi Purwantoro Sasongko Dwi Puspitasari Dwiki, Elba Dwiyanto JS Dzuelqarnain, Muhammad Essa eko efendi Elisdiana, Yeni Endriasmoro M Siagaan Esti Harpeni F M Arif Faizal Ahmad Fajar Waskito Fajrin, Fajrin fidhoh, kha Fidyandini, Hilma Putri Firdausi, Hilma Nahwa Fithria I D, Ni'matul Fitra Ramdhani Fitra Ramdhani Florentina Yuni Arini, Florentina Yuni Frysca Putti Muviana Fuad Tarmidzi Galang Virgiawan Ganap Y. Febrika Ganap Yuliana Febrika Ghufron Abdullah Gunawan, Riyan Habib, Farid Alif Harri Yudianto Hauzan, Noor Azmi Fachri Hauzan, Noor Azmi Fachri Hay's, Riyan Naufal Herbianto, Sheren Aurellya Hidayat, Muhammad Adil Hidayati, Ina Hilmi, Haidar Hirafiany Daruartati I Gusti Ngurah Antaryama I Nyoman Sujana Ibnu Rasid Ida Hayu Dwimawanti Ilham Nurdien Imam B. Raharjo Imam Baru Raharjo Imam Baru Raharjo Indah Asmoro Wulan Indra Gumay Febryano Irawan, Ady Isa Akhlis Isnain Gunadi Istikomah Istikomah Istiqomah Ari Kusuma Ita purnamasari, Ita Itasari, Andri Astuti Jatmiko Endro Suseno Jatmiko Endro Suseno Juliasih, Ni Luh Gede Ratna Kanthi Pamungkas Sari Kasanah, Nur Khafidhoh Khafidhoh, Khafidhoh Khairunissa, Hatifa Khasana, Devi Ardiyati Kholidin, Edy Barkat Kusno Adi Sambowo Kusumaningrum, Rahma Puspita Lendriadi A. Lestari, Kiki Indah Lestari, Sepnina Like Limin Santoso Linirin Widyastuti, Endang Listia, Octa Lutfiani, Ulfah M Wildan Firdaus Maharani, Ni Putu Diva Mahestri, Laras Mahmud Yusuf Malau, Victor Pandpotan Maya Riantini, Maya Maya Sekar Wangi Moch. Abdul Mukid Mohammed I. D. Matar, Mohammed Mualimin Mualimin Mualimin Mualimin Muchammad A Rofik Muchlis, Ibnu Mufita, Halimah Muhammad Irham Nurwidiyanto Muhammad Mualimin Muhammad Nur Muhammad Nur Handoyo Munti Sarida Murtiningtias Diah Ayu Martha Dewi Mustafid Mustafid Mutiatussholikah, Dita Muyasaroh, Evi Nafiisah, Nafiisah Naufal, Adnan Faris Ningsih, Setia Nisa Az Zuhdy, Afifah Nona Dili Maricci Noor Alis Setiyadi Noor, Huriyatul Fitriyah Noviana Fransiska Nuning Nurcahyani Nur Rachmaningtias Nurcahyo, Mugi Nurhadiyastuti, Ameilia Nuriyana Muthia Sani Nursamsiah Nursamsiah Nurul Khasanah, Nurul Nur`Ani Okta Trilia Octaviani Sarmauli Oki Hedriana Oky Irawan Sugiri Ophi Thio Rendy Parabi, Achmad Reza Parbuntian Sinaga Pitojo Budiono Prabowo, Muhammad Nur Priyo, Priyo Putra, Hisbicus Dwi Surya Qadar Hasani R. M. Tofan Sastranegara Rahayu, Wiji Rahaz, Muhammad Faiz Thoyib Rahmasari, Ikrima Rahmat Gernowo Ramadhan, Irvan Rara Diantari Ratih Rundri Utami Ratna Dewi Winesthi Redemtus Heru Tjahjana Rina Dwi Indriana Rina Hesti Utami Ririn Sulpiani Sakti, Doni Bilga Komara Sari, Azzahra Indah Satriyo Adhy Sela Ade Otaviana Setiawan, Aqshal Dwi Siti Fathonah Siti Hudaidah Siti Rohimah Sitompul, Hotlan Albert Adventus Subandoro, Agus Sudarno Sudarno Sugeng Widada Sugiharto, Sh Sumino, Sumino Supono Supono Supriyadi - Supriyadi - Susanti, Oktora Susanti, Susanto, Gregorius Nugroho Sutrisno, Ade TATI NURHAYATI Teguh Satya Bhakti Teguh Suroso Thessa Putri Aulia Tiara Qonita, Azhra Tiara Qonita Titik Haryati Tugiyono Tugiyono Udi Harmoko Wahyono, Catur Wahyu Eko Sulistiono Wardiyanto - Widiarso Dian Agus Widiastuti, Endang Linirin Winaldi, Iman Wisnu Agung Permadi Wiyatanto, M Toto Yasluh, Muhammad Sholukha Yatti Pratyas Katrinavia Yatti Pratyas Katrinavia Yayan Yuliananto Yayan Yuliananto Yeni Indriyani Yoga Aribowo Yudha T Adiputra Yudha Trinoegraha Adiputra Yundari, Yundari Yuniarti, Siti Yusup, Maulid Wahid Zainal Abidin Zaini, Syakila Zulfikar Zafeskan Ronapati