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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Pembangunan Wilayah dan Kota BERKALA FISIKA SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL Jurnal Sains dan Teknologi ECSOFiM (Economic and Social of Fisheries and Marine Journal) Jurnal Kelautan Tropis AGRIKAN Jurnal Ilmiah Agribisnis dan Perikanan Acta Aquatica: Aquatic Sciences Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) INDONESIAN JOURNAL OF APPLIED PHYSICS Albacore : Jurnal Penelitian Perikanan Laut Jurnal Perikanan Universitas Gadjah Mada Jurnal Akuatiklestari Journal of Physics and Its Applications Jurnal Kebijakan Perikanan Indonesia Jurnal Sosial Ekonomi Kelautan dan Perikanan Buletin Ilmiah Marina : Sosial Ekonomi Kelautan dan Perikanan Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management Jurnal Energi Baru dan Terbarukan International Journal of Science and Society (IJSOC) Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Eksergi: Jurnal Teknik Energi Agrikan: Jurnal Agribisnis Perikanan Policy Brief Pertanian, Kelautan, dan Biosains Tropika Lempuk: Jurnal Ilmu Kelautan dan Perikanan (Journal of Environmental Sustainability Management)
Gatot Yulianto
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Journal : YOUNGSTER PHYSICS JOURNAL

 1 
STUDI ALIRAN FLUIDA MANIFESTASI PANAS BUMI DESA DIWAK DAN DESA DEREKAN, KECAMATAN BERGAS, KABUPATEN SEMARANG MENGGUNAKAN METODE TAHANAN JENIS 3D. Hotlan Simbolon; Udi Harmoko; Gatot Yulianto; Sugeng Widada; Yusuf D. H.; Sahid Sahid
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

This research use geolistric method that aims to analize the system of manifestation of fluida distribution geothermal on Diwak, Derekan Central Java, based on measurement of geolistric 3-D with pole - pole configuration, has been done. Data processing is performed using software Res3dinv and surfer which results in a horizontal and vertical cross-section. The results of the interpretation of 2D processed by software rockwork to obtain 3-D cross-section. The results showed that the measurement point 1, the direction of the fluid flow toward the east. Measurement point 2, the direction of flow of the fluid toward the northwest, the fluid flow direction to both of the points towards Lutung river. Keywords : Fluida, pole-pole konfiguration, Diwak, Derakan
PENENTUAN STRUKTUR BAWAH PERMUKAAN DENGAN MENGGUNAKAN METODE SEISMIK REFRAKSI DI LAPANGAN PANAS BUMI DIWAK DAN DEREKAN, KECAMATAN BERGAS, KABUPATEN SEMARANG Saiful Nurul Hudha; Udi Harmoko; Sugeng Widada; Yusuf D.H; Gatot Yulianto; Sahid Sahid
Youngster Physics Journal Vol 3, No 3 (2014): Youngster Physics Journal Juli 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

A research of refraction seismic methods in Diwak and Derekan village, Bergas district , Semarang regency , Central Java has been done on March 30, 2013 and August 27, 2013. This research in order to determination the subsurface structure of a geothermal field Diwak and Derekan with refraction method. In this aquisision data the travel time data was a distance function, with Geometrics Model ES-3000 seismic refraction instrument with 8 Geophones. Processing and interpretation data used Hagiwara method. Hagiwara method used value of delay time concept from travel time curve.This interpretation which resulted shows the subsurface lithology of the study area Diwak v1 obtained for the first layer of 297 – 412 m/s which we interpret as a layer of alluvium.  While v2 on both layers obtained a value of 471 – 697 m/s which we interpret as soil. This research is the penetration depth of 5.84 - 11.7 m . The results obtained in the field structure of the two bedding Derekan, v1 to the first layer of 546 - 1011 m/s which is interpreted as alluvium. While v2 on both layers obtained a value of 1081 - 1714 m/s are interpreted with clay .Penetration that can be recorded on the field at 0.75 – 9.16 m .Keywords: sub surface structure, seismic refraction, Hagiwara method, Diwak, Derekan
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.
Analisis resiko kebencanaan gempa bumi data mikrotremor di Desa Fulolo Kecamatan Alasa Kabupaten Nias Utara Asronj Bakkit Simanjuntak; Gatot Yuliyanto; Udi Harmoko
Youngster Physics Journal Vol 6, No 4 (2017): Youngster Physics Journal Oktober 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The Measurement of the microtremor has been conducted in the Village of Fulolo, Alasa Subdistrict, North Nias District. The aim of this study is to determine the parameters of HVSR in the form of the dominant frequency value (f0) and amplification factor (A0) and the parameters of soft sediment thickness (H), seismik vulnerability index (Kg), peak ground acceleration/PGA (α) and ground shear strain (γ) as well as analyzing the earth quake disaster risk  in the Village of Fulolo, Alasa District, North Nias District. Microtremor measurements done on 5 points measurement and microtremor’s data were analyzed using Horizontal to Vertical Spectral Ratio’s method. The HVSR analysis is in the dominant frequency (f0) value and amplification (A0) value. Then calculate the thickness of soft sedimentary , the value of peak ground acceleration/PGA(α), the value of seismic vulnerability index (Kg) and the value of ground shear strain (γ).The results showed that the village of Fulolo have dominant frequency (f0)  distribution grade range up 0,954 Hz to 7,149 Hz, the value of amplification (A0) ranges up 0,546 to 7,505, the value of the thickness of soft sedimentary (H) ranges up 8,945 meters t 112,21 meters, the value of peak ground acceleration (α) ranges up 71,78 gal to 194,11 gal, the seismic vulnerability index (Kg) ranges up 2,06 x 10-07 (1/cm s2) to 1,86 x 10-05 (1/cm s2) and the value of ground shear strain (γ) range up 1,031 x 10-04 to 1,338 x 10-03. Area that are high risk of experiencing the ravages of earthquakes are Fulolo 3rd, Fulolo 4th, Fulolo 5th on the Gunung Sitoli Formations (QTg) because of those have a thick layer of soft sediments so that third of the area have a dominant low frequency (f0) and resulting low amplification factor (A0) are high as well as at risk for experiencing shifting rock and deformation of surface layer due to the propagation of earthquake waves.Keywords: Microtremor, HVSR, Dominant Frequency, Amplification, Peak Ground Acceleration, Seismic Vulnerability Index and Ground Shear Strain
Co-Authors . Sahid . Zairion Abdur Rosyid Achmad Fahrudin Achmad Syaifuddin Zuhri Achmad Widodo Agung Cahyono Agung, Gede Panji Akhmad Fauzi Akrima Amalia Ario Damar Arshad, Mazlan Asronj Bakkit Simanjuntak Aswin Baskoro Rochaddi Booth, Hollie Bryan Brama Ramadhana Budi Setiadi Cahyo Priyo Sembodo Charles Parningotan Haratua Simanjuntak Dwi Purwantoro Sasongko Easteria, Grace Fauzan, Fatih Ahmad Fenti Listiyani Fery Kurniawan Firda, Hasdinar Fredinan Yulianda Gatot Yulianto Hades Mandela, Hades Hartono, Daniel Hefni Effendi HERMAWAN Hotlan Simbolon Husein, Muhammad Saddam Indah, Mega Natasha Irham Nurwidyanto Irma Akhrianti Johan Maulana Hadi Kurniawati, Dwi Shinta Luky Adrianto M. Nurdin W. P. Majariana Krisanti Mardyani, Yeyen Maria Wahyuni Mars Widodo Masud, Rizka Maulidiyah Mazlan, Mazlan Mennofatria Boer Mohammad Mukhlis Kamal Muhammad Yusuf Muhammad Zainuri Muslim, Yus Sudarsono Naufalzuhdi, Achyar Nindita Eka Setyahandani, Nindita Eka Prayoga, Gatot purnama, Fajar adi Putra, Aditya Handoyo R. Sapto Hendri Boedi Soesatyo Rachmawani, Dori Rahmat Kurnia Rakhmat Syaefullah Riza Eka Prabowo Rizal Fahmi Rohmah, Lailia Nur Rr. Tony Yulianto Rumasoreng, Samsul Bahri Sadelie, Agus Sahid Sahid Saiful Nurul Hudha sapanli, kastana Setyawati, Novitria Sidhi Saputra Siti Khasanah Siti Zulaikhah Sri Wahyuningrum Stefanie Virlanta Putri Stelina Candita Gunawan Sin Sin Tan Sugeng Santoso Sugeng Widada Sugeng Widada Suparyana, Suparyana Suryono Suryono Taufiq Yuana Teguh Suroso Tridoyo Kusumastanto Udi Harmoko Udi Harmoko Vithya Arintalofa Wafi, Hanif Yohanes Yuli Mulyanto Yonvitner - Yudha, Firsta Kusuma Yusuf D. H. Yusuf D.H Yusuf Dewantoro Herlambang Zaenal Arifin Zulhamsyah Imran