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All Journal SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL Journal of Physics and Its Applications
Rr. Tony Yulianto
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
Astronomy Earth & Planetary Sciences Materials Science & Nanotechnology Mathematics Physics

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IDENTIFIKASI JENIS BATUAN CANDI DUKUH, CANDI NGEMPON DAN CANDI GEDONG SONGO MENGGUNAKAN SONIC VIEWER-SX 5251 Pertiwi Pertiwi; Tony Yulianto
Youngster Physics Journal Vol 3, No 2 (2014): Youngster Physics Journal April 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Rock identification with rock mechanics properties of rock samples to determine the type of  Dukuh temple , Ngempon temple and Gedong songo temple, with the ultrasonic wave method using Sonic Viewer SX - 5251. Travel time of ultrasonic waves on the sample is used to obtain S and P wave velocity. Data has processing using Excel software. Value of the S and P wave velocity, shear modulus , rock elasticity , and Poisson 's Ratio will be correlated with rock density tables, P and S wave velocity tables and rock mechanics properties table it can be seen kind of rock  from each of  the rock  physics properties. The research result shows that rock composite Ngempon temple, Dukuh temple , and Gedong Songo are Andesite. In addition to the density values which obtained, the level of rocks weathering can be defermind as well. Dukuh B rock sample  with a density of 2.66 gm /cm3 can be classified in level I, it show that those rocks are strong and good.  On the other samples of the Ngempon temple, gedong Songo or from another Dukuh the density values which obtained are from 2.33 to 2.49 can be classified at level II or it can be said to be strong enough .Key Word :               Ultrasonic Wave, Sonic Viewer, Ngempon Temple, Dukuh Temple, Gedong Songo Temple, Weathering, and Andesite Rocks.
INTERPRETASI GEOLOGI BAWAH PERMUKAAN DAERAH POTENSI MATA AIR PANAS KALIULO KABUPATEN SEMARANG BERDASARKAN DATA GEOMAGNET MENGGUNAKAN MODEL 2-D & 3-D Diny Agustina Rahayu; Udi Harmoko; Tony Yulianto; Sugeng Widada; Yusuf Dewantoro
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

The geothermal hot springs has been discovered in the Kaliulo area, Pringapus district of Semarang Regency. The research was conducted by 2-D and 3-D model geomagnetic for find the geological subsurface structure. Observation data such as magnetic field of 61 point used one set of PPM (Proton Precission Magnetometer) GSM geometrics 19 T and two units Geotron Magnetometer Model Unit G5. Data analysis of geomagnet was undertaken by diurnal correction and IGRF (International Geomagnetic Reference Field) correction to obtain the total of magnetic field anomalies. The total magnetic field anomaly data were utilized to create anomaly contour. That anomaly is used for doing reduction to plansurface process, upward continuation that produce anomalies local and regional, and reduction to pole. Modeling was done on the local magnetic anomalies to review subsurface using Mag2DC and UBC Mag3D. The results showed the + (positive) closure and – (negative) closure that can indicate anomalies object in other word to be weak zone or geological structure of fault is available, so that the slicing is made on that closure. Based on the model 2-D normal fault structure the northwestsoutheast trending and northeast-southwest, this interpreting so that normal faults which controlled source hot springs Diwak to Kaliulo.  
APLIKASI METODE DOUBLE DIFFERENCE DALAM RELOKASI HIPOSENTER UNTUK MENGGAMBARKAN ZONA TRANSISI ANTARA BUSUR BANDA DAN BUSUR SUNDA Iis Nur Jannah; Titi Anggono; Tony Yulianto
Youngster Physics Journal Vol 5, No 3 (2016): Youngster Physics Journal Juli 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The region along of zone transition between Banda arc and Sunda arc is very vulnerable region of earthquake disaster because of this region is located at active subduction zone which caused by convergent boundaries of two tectonic plate, Eurasian plate and Indo-Australian plates. Precise catalogue data will be important as references to tectonic and earthquake study in this area. Because that reason, precise hypocenter information is very important. Earthquake relocation is used to calculate earthquake hypocenter to become precisely. The purpose of this study is to get precise hypocenter distribution of zone transition between Banda arc and Sunda arc.The double-difference (DD) method is a relative hypocenter method using residual time data of pairs of events to each seismographic station. In this research used by using P wave travel time from the International Seismological Center (ISC). Earthquake that relocated are earthquake which recorded from 2014 until 2011. The results show relocated hypocenters move toward a certain structure and from a clear pattern of seismicity. A clear seismicity pattern is located in northern 119° which active subduction zone of two tectonic plate. The double-difference (DD) method can provide a significant improvement in the hypocenter location. This is indicated by residual time that decline.Keyword: relocation hypocenter, double-difference method, zone transition between Banda arc and Sunda arc.
ANALISIS POROSITAS DAN SATURASI AIR DALAM INTEGRASI PETROPHYSICS DAN SEISMIC MULTIATTRIBUTES UNTUK KARAKTERISASI RESERVOIR Gian Antariksa; Hernowo Danusaputro; Tony Yulianto
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

Plan of Development I is the development plan of one or more oil and gas fields in an integrated way (integrated) to develop and produce hydrocarbon reserves. Field development was conducted in order to know the area indications of hydrocarbons based on petrophysics analysis and determine its content with multiattributes. By integrating the study of seismic data, well data (including petrophysical analysis) with geological and stratigraphic information is a necessary step to determine the characteristics of a reservoir. Formation evaluation and petrophysical analysis as an initial stage to characterize the reservoir by studying rock properties such as volume of clay, porosity and water saturation. Multiattribut seismic analysis is used to predict the physical properties of the rock as a whole in the seismic volume. Based on the results of the petrophysical analysis of the target porosity ranges from 11% -14%, from the netpay statistical data lumping results have value Net to Gross range of 7% to 40%.and water saturation ranging from 18% -38%. Seismic multiatributtes method can predict petrophysical analyzes well in the target zone.
ANALISIS STRUKTUR BAWAH PERMUKAAN DAERAH HARJOSARI KABUPATEN SEMARANG MENGGUNAKAN METODE GEOMAGNET DENGAN PEMODELAN 2D DAN 3D Mars Widodo; Tony Yulianto; Udi Harmoko; Gatot Yulianto; Sugeng Widada; Yusuf Dewantoro
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

Research of analysis subsurface structure in Harjosari Semarang district using geomagnet methods with 2D and 3D modelling. In this study, magnetic data acquisition was carried out in 93 points by using a PPM (Proton Precession Magnetometer) geometrics type of GSM 19T and 2 units geotron magnetometer G5 models to get the values of the total magnetic field. The result of measurement data is processed by the daily variation correction and IGRF correction (International Geomagnetic Reference Field). The corrected data has been used to create total magnetic anomaly contour. The total magnetic anomaly contour has been used to process reduction to plan surface. The result of reduction to plan surface has been used to create a contour upward continuation and then made reduction to the poles. The result of research showed the total magnetic anomaly closure pair of positive and negative indicated a fault zone below the surface. Result of research an incision on the closure pair of positive and negative to determine the subsurface structure of the region by creating a model of 2-dimensional (2D) using software Mag2DC. In 2D modeling result shows that was a fault zone below the surface about 210 to 1000 meters depth. The existence of the fault structure below the surface was estimated as a result of rock shifting from the northeastern area of research. Result of a 3-dimensional (3D) modelling using UBCMag3D software to determine subsurface structures more clearly by including error values, parameter values susceptibility and density models. On the results of the 3D display of subsurface structures found any difference in stark contrast to the susceptibility value at a depth of 225 meters to 1200 meters. The susceptibility value differences suspected presence of fault structures below the surface.
PEMODELAN INVERSI ANOMALI MAGNETIK 3D DAERAH MATA AIR PANAS DIWAK DAN DEREKAN Siti Zulaikhah; Udi Harmoko; Tony Yulianto; Gatot Yulianto; Sugeng Widada; Yusuf Dewantoro
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

Research of magnetic methods that aim to interpretation the subsurface structure around the hot springs area Diwak and Derekan and to identification caused of hot springs Diwak and Derekan has been successfully carried out. In this research, measurements were taken at 97 points using a proton precession magnetometer (PPM) type of GSM model 19T geometrics and two Geotron Magnetometer G5 models to get the value of the total magnetic field. Measurement data is processed by the daily variation correction and correction IGRF (International Geomagnetic Reference Field) to get the value of the total magnetic field anomaly. Corrected data used to create contours of the total magnetic field anomaly. Contour total magnetic field anomaly is used for the reduction to plan surface process and upward continuation process. The results of the upward continuation get the contours of local anomaly and regional anomaly, the results of the local anomaly contour then reduced to the pole. Results of the research is a pair of positive and negative closure indicate a fault structure below the surface. There are two pairs of positive and negative closure which an incision is made to determine the subsurface structure by creating a 2D model using the software Mag2dc. 2D modeling results indicate the existence of a second incision fault structure in the form of down trending fault southwest-northeast. Meanwhile, to make 3D models using software Mag3D and 3D modeling results indicate the presence of fault structures below the surface. Fault zone results of 2D and 3D modeling is a media outlet fluid to the surface in the form of hot springs Diwak and Derekan.
INTERPRETASI SISTEM PANAS BUMI GUNUNG TELOMOYO BAGIAN UTARA KABUPATEN SEMARANG BERDASARKAN DATA GEOMAGNET Hiskia Anggit Maulana; Tony Yulianto; Udi Harmoko
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

Research has been carried out using the magnetic methods that have aim for interpret the subsurface structure of Telomoyo Mount geothermal field. The second aim is for analysis the model of Telomoyo Mount geothermal field previous.Magnetic data acquisition has been carried out in 83 points by using a couple of PPM (Proton Precession Magnetometer). Those are a PPM GSM19T model geometric is used looking for total magnetic anomaly and the second one is PPM G856X model that used as a base station. Then the result of acquisition data is processed by the daily correction and IGRF (International Geomagnetic Reference Field) correction. The corrected data is used to create total magnetic anomaly contour. Magnetic field that negative values is the research target and then do subsurface cross section that looking for visualization of conceptual geothermal model of Telomoyo Mount by processing of upward continuation and reduction to pole.The result of study showed a pair of positive and negative closure that indicating a fault under surface zone. In 2D modeling result is about 1400 meters depth. In 800 to 1400 meters depth can be interpret as a clay cap with a low susceptibility parameter that valued  -0.313 x 10-3 (SI-unit).Keywords: Geothermal, Telomoyo Mount, total magnetic field 
PEMODELAN 2D SEBARAN TAHANAN JENIS TERHADAP KEDALAMAN DAERAH PANASBUMI GARUT BAGIAN SELATAN MENGGUNAKAN METODE MAGNETOTELLURIK Dita Destyanti; Tony Yulianto; Eddy Z Gaffar
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

Southern Garut geothermal area West Java, is one of the area with geothermal prospects, characterized by the surface manifestations of craters in Papandayan mountain region and hot springs in Ciarinem area. The area was composed by old volcanic rocks, generally consists of a tuff rocks, tuff breccias and lava. This study aims to interpret 2D modeling of resistivity distribution to the depth of Garut Southern area geothermal and to determine geothermal system of that area under magnetotelluric method (MT). This method is used because its capablility to detect subsurface structure to a thousand meters depth. The data was taken as much as 32 acquisition points. The Data was obtained from field acquisition process, further processed using SSMT 2000 MT Editor 90, and WinGLink software. The results showed the presence of two geothermal systems in Ciarinem and Papandayan mountain region, consist of clay cap rocks, reservoir rocks, and hot rock. Clay cap rocks wich tend conductive located at shallow depths with resistivity value ranging from 10 – 30 ohm.m, reservoir rocks with resistivity value of between 40 – 600 ohm.m and hot rocks that are more resistive have resistivity value ≥700 ohm.m.
INTERPRETASI BAWAH PERMUKAAN DAERAH SUMBER AIR PANAS DIWAK-DEREKAN BERDASARKAN DATA MAGNETIK Muhammad Ulin Nuha ABA; Tony Yulianto; Udi Harmoko
Youngster Physics Journal Vol 3, No 2 (2014): Youngster Physics Journal April 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Research has been carried out using a magnetic method that aims to interpret the subsurface structure of the area hot springs Derekan - Diwak based on the total magnetic field anomaly data. It also aims to investigate the geothermal system in the area.Some 99 points measurement areas were measured using PPM (Proton Precession Magnetometer) geometrics type GSM19T models to get the value of the total magnetic field and two points as a base station simultaneously measured using the PPM G856X models. Measurement data is processed by the daily variation correction and IGRF (International Geomagnetic Reference Field) correction. The data has been used to create a contour corrected total magnetic field anomalies and subsurface cross sections involving the upward continuation and reduction to the poles.The results of study showed the total magnetic field anomaly closure pair of positive and negative closure indicate a fault zone below the surface. Interpretation is strengthened by the results of the modeling showed two faults of Derekan - Diwak areas trending southwest- northeast. This fault zone is a media outlet fluid to the surface in the area of geothermal systems.Keywords: geothermal, fault, and total magnetic field
PENGGUNAAN METODE GEOLISTRIK RESISTIVITAS 3-DIMENSI UNTUK MENGETAHUI SEBARAN LIMBAH DI TPA JATIBARANG KOTA SEMARANG Aspia Prapitari; Tony Yulianto
Youngster Physics Journal Vol 2, No 3 (2013): Youngster Physics Journal Juli 2013
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The waste distribution in TPA of Jatibarang in Semarang has measured and interpreted using resistivity geoelectric 3-D method with pole – pole configuration.Field data has processed using Res3dinv program which gives horizontal and vertical cross section as the result. The result of res3dinv is entered to RockWork software to obtain 3-D cross section. The result of RockWork software could describe the waste distribution in TPA of Jatibarang.The research result shows that the direction of waste distribution in TPA of Jatibarang which has resistivity range 21,5 Ωm – 39,2 Ωm is to East – South which is to Kreo river. Key words : Resistivity geoelectric 3-D, Garbage dump waste, Pole – pole configuration, Res3dinv, RockWork 
Co-Authors Alifa Rusyda Arga Brahmantyo Aspia Prapitari Aufi Maslihah Umamii Dadan Dani Wardhana Dewi Wijayanti Dhana Hastuti Diny Agustina Rahayu Dita Destyanti Dwiyanto Joko Suprapto Eddy Z Gaffar Fajar Waskito Gatot Yulianto Gian Antariksa Hernowo Danusaputro Hiskia Anggit Maulana Iis Nur Jannah Iqbal Takodama Irfan Roismanto Irvan Ramadhan Kusworo Adi Laela Fitria M. Irtem Nurwidyanto Mars Widodo Muhammad Ulin Nuha ABA Nabil Bawahab Pertiwi Pertiwi Putri Nuriskianti Seftyand S Briyantara Siti Zulaikhah Sugeng Widada Tabitha Abid Ardaneswari Thomas Triadi Putranto, Thomas Triadi Titi Anggono Triana Triana Udi Harmoko Yusuf Dewantoro Herlambang