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All Journal POSITRON Jurnal Penelitian Fisika dan Aplikasinya (JPFA) IJOG : Indonesian Journal on Geoscience JGE (Jurnal Geofisika Eksplorasi) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Teknisia Jurnal Geosaintek Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Jurnal Fisika FLUX Jurnal Geocelebes Indonesian Physical Review Journal of Engineering and Scientific Research (JESR) Jurnal Geofisika Asimtot : Jurnal Kependidikan Matematika Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika Journal of Innovation and Technology JIFP (Jurnal Ilmu Fisika dan Pembelajarannya) JURNAL TEKNIK GEOLOGI : Jurnal Ilmu Pengetahuan dan Teknologi Prosiding Seminar Nasional Hasil Penelitian Sains, Teknik dan Aplikasi Industri Fakultas Teknik Universitas Lampung Jurnal Rekayasa Geofisika Indonesia Jurnal Geosaintek
Syamsurijal Rasimeng
Universitas Lampung
Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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ANALISIS ANOMALI SINYAL ULTRA LOW FREQUENCY BERDASARKAN DATA PENGUKURAN GEOMAGNETIK SEBAGAI INDIKATOR PREKURSOR GEMPABUMI WILAYAH LAMPUNG TAHUN 2016 Ulfa Wahyuningsih; Syamsurijal Rasimeng; Karyanto Karyanto
Jurnal Geofisika Eksplorasi Vol 4, No 2 (2018)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v4i2.16

Abstract

Regional research had been done to analysis anomalies signal of ultra low frequency based on measurement data as an indicator of the geomagnetic earthquake precursor of lampung in 2016. To achieve purpose of the study conducted by the following steps: (i) Calculation of the total magnetic field of data; (ii) Daily Trend Analysis; (iii) the Fourier transform of the data Geomagnetic Anomaly; (iv) Localization Frequency ULF; (v) Calculation of Ratio Vertical-Horizontal (Polarization Ratio Z / H); (vi) Correction magnetic storms or Disturbance Strom Time (DST); (vii) the identification of earthquake precursors; (viii) Determination of OnsetTime, leadtime,and the direction of precursors. The results of the analysis of ten earthquakes with a magnitude above 5 MW have precursors between 11 to 30 days before an earthquake. Nine out of ten earthquakes studied had an earthquake precursors and precursors that do not have, this is because the distance is too far from the station Magdas in Liwa, West Lampung. Thus it can be seen that the precursor using the magnetic data can be used to make short-term predictions.
IDENTIFIKASI BAHAYA PENGUATAN GEMPA WILAYAH JAWA TAHUN 1974-2020 Iis Ratna Sari; Syamsurijal Rasimeng; Haqqie Ramadhan; Ida Bagus Sunanda Yogi; Supardi .
Jurnal Geosaintek Vol 6, No 3 (2020)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v6i3.6995

Abstract

Wilayah Jawa memiliki risiko tinggi untuk gempabumi. Mengingat, sepanjang laut selatan jawa ada lempeng besar, pergerakan lempeng ini lah yang pindah perpindahan gempa. Terbukti ada gempa-gempa besar dan tsunami yang menerjang beberapa daerah di wilayah jawa. Gempa dapat menyebabkan banyak kerusakan dan korban jiwa. Oleh karena itu, persetujuan kegempaan berhasil penting. Pada penelitian ini, pengujian kegempaan di wilayah Jawa dilakukan dengan menggunakan program surfer dan matlab. Sementara itu membahas untuk mempelajari gempa bumi di wilayah pulau jawa, dan mempelajari gempa besar yang terjadi serta frekuensinya. Data gempa yang dianalisis pada wilayah dengan koordinat 5,6 0  - 8,5 0 LS hingga 105,9 0  - 114,60  BT dengan rentang waktu antara 1 Januari 1974 - 30 April 2020. Berdasarkan data gempa yang diperoleh menunjukkan besarnya gempa bumi diperoleh 7,5 terjadi pada tanggal 08 Agustus 2007 dengan kedalaman 280 km dan besarnya terendah memiliki nilai 5, dan nilai b-value sebesar 0,651. Hasil analisa data gempa menggunakan program surfer diplot dalam model peta 2D dan 3D. Sedangkan, hasil analisis data gempa menggunakan Matlab diperoleh nilai frekuensi dominan sebesar 0,17266. Selain itu, pada penelitian ini juga dihasilkan periode yang dihitung gempa dalam skala bulan, di mana dari hasil analisis yang dilakukan diperoleh nilai periode pelepasan energi sebesar 0,20863 bulan dengan energi sebesar 2,08 x 10 34  joule.
CHARACTERIZATION OF SOIL THERMAL PROPERTIES FOR DESIGN OF UNDERGROUND CABLE ROUTES AT THE WIND FARM POWER PLANT AREA, PANYIPATAN AND PELAIHARI SUB-DISTRICT, SOUTH KALIMANTAN Syamsurijal Rasimeng
JURNAL GEOCELEBES Vol. 4 No. 1: April 2020
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v4i1.9599

Abstract

The estimation of soil thermal resistivity is essential for many types of big engineering projects because of the required knowledge about subsurface transmission of either heated fluids or high power currents. Thermal conductivity measurements were carried out at 12 locations, eight measurement point locations in South Kalimantan, the Sapu Angin hill region, sub-district Penyipatan and four points in the area of Kampung Baru, sub-district Pelaihari made at 2-3 variations in depth of 50 to 100 cm, which adjusted to the ability of the soil drilling support equipment to make holes in the soil. Samples were also collected from the locations for physical parameters description that influences thermal resistivity, subjected to grain size distribution and compaction analysis. The calculation of thermal conductivity is done by using CT-Lab software ver. 1.0.2 with a sensor resistance value of 82.69 ohms / m, heater voltage 4.0 V, and heater power 4.3857 W/m. The results show that the thermal conductivity values range from 0.593 to 3.239 W/mK. For the Sapu Angin hill region, sub-district Penyipatan, soil layers are generally in the form of sandy-clay (λ> 1.2 W/mK), but at some points, the value of thermal conductivity in these layers have decreased (λ <1.2 W/mK) due to rainwater infiltration (BH-02, BH-03, BH-04, BH-05, and BH-07). The infiltration causes weakening or loosening of bonds between the constituent particles of the soil. While in the area of Kampung Baru sub-district Pelaihari, the soil layer is generally in the form of sandy-clay, which has not well compacted (BH-08, BH-10, BH-12) with high water content (BH-09).
FORWARD MODELLING METODE GAYABERAT DENGAN MODEL INTRUSI DAN PATAHAN MENGGUNAKAN OCTAVE Muhammad Nurul; Syamsurijal Rasimeng; Ida Bagus Suananda Yogi; Aprillia Yulianata; Aisah Yuliantina
JURNAL GEOCELEBES Vol. 4 No. 2: October 2020
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v4i2.10112

Abstract

The gravity method is a geophysical exploration method to measure variations in the acceleration of gravity on the surface of the earth in response to variations in rocks that exist beneath the surface. In gravity exploration requires a preliminary picture as a reference for measurement. This study aims to make forward modeling synthetic OCTAVE based using synthetic data on subsurface rock structures, so as to produce intrusion and fracture models based on differences in the value of the acceleration of gravity from one point to another on the surface of the earth. Synthetic modeling with the geological parameter approach of the study area is based on variations in the price of rock density. The model parameters used in intrusion modeling are the density value of 2.7 g/cm3 and the depth of 850 meters while the fracture modeling uses a density value of 2.7 g/cm3 with a depth of 350 meters and 360 meters and a thickness of 500 meters. From intrusion modeling, the gravity vertical component of attraction force is 0.03 mGal and in the fracture modeling the gravity vertical component of attraction force is 0.0565 mGal. Based on the results of this modeling, distance curve vs. gravity anomaly response is obtained for both cases. In the intrusion rock model obtained by the profile model with an open type down. While the fracture modeling is obtained anomalous profile curve variation which states that in the fracture area with a significant change in the direction of the curve.
Penentuan Episentrum dan Hiposentrum Gempa Bumi Menggunakan Metode Grid Search di Antelope Valley, California Ambrosius Hernawan Wibisono; Restu Wildanu Ahadi; Sultan Al Ghifari; Ilham Dani; Syamsurijal Rasimeng
JURNAL GEOCELEBES Vol. 5 No. 2: October 2021
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v5i2.14635

Abstract

Penentuan titik episenter (titik gempa terekam di permukaan bumi) dan hiposenter (titik gempa terekam di bawah permukaan bumi) dapat dilakukan dengan perhitungan numerik. Penelitian ini menentukan titik episenter dan titik hiposenter gempa yang terjadi di Antelope Valley, California, Amerika Serikat tahun 2021 dengan kekuatan sebesar magnitudo 6.0 pada geografis lintang 38.507o LU dan bujur 119.499o BB. Gempa terekam di tiga stasiun terdekat, yaitu stasiun NV31, PASC, dan CMB. Perkiraan titik gempa berada di tengah-tengah ketiga stasiun tersebut, sehingga data perekaman gempa pada ketiga stasiun tersebut sangat penting karena dianggap paling akurat. Penelitian ini menggunakan metode Grid Search dengan plotting 2D dan 3D. Pengolahan data menggunakan Google Colaboratory, dan SeisGram2K v7. Data perhitungan merujuk informasi resmi dari situs USGS (United States Geological Survey). Berdasarkan perhitungan, diperoleh hasil plotting 2D bahwa titik episenter pada lintang 39.255⁰ LU dan bujur 119.833⁰ BB. Hasil plotting 3D menunjukkan titik hiposenter pada lintang 38.627⁰ LU, bujur 119.788⁰ BB, dengan kedalaman 18 Km.
PENENTUAN LITOLOGI LAPISAN BAWAH PERMUKAAN BERDASARKAN TOMOGRAFI SEISMIK REFRAKSI UNTUK GEOTEKNIK BENDUNGAN AIR DAERAH “X” Hilman Sabiq; Syamsurijal Rasimeng; Karyanto Karyanto
Jurnal Geofisika Eksplorasi Vol 4, No 3 (2018)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v4i3.41

Abstract

Batang Toru river which is through Kecamatan Sipirok, Kabupaten Tapanuli Selatan, will be a hydro-electric power plant, in order to require the electricity in North Sumatera area. Therefore, refraction seismic survey needed to determine the subsurface litology, as a guide in the construction of river water dam in that area. This study aims to determine lithology in the research area based on cross-section of refraction seismic tomography, and to estimate the depth and thickness of the rock layers beneath the surface of the study area. Refraction seismic tomography produces a cross section which shows the distribution of velocity value to depth, so we obtain the interpretation of rock lithology and depth estimation of each layer. The first layer is a topsoil layer with a velocity range of 100-700 m/s, the thickness of the topsoil is estimated to be about 1-10 meters. The second layer is indicated as a tuff-sandstone with medium consolidation with a velocity range of 600-1800 m/s, with an estimated thickness about 10-35 meters. The third layer is indicated as a tuff-sand rock to tuff-breccia with a value range higher than 1800 m/s, with an estimated depth of 30-40 meters from the surface.
Estimation of Potential Gold Mineral (Au) with A Resistivity Approach Akroma Hidayatika; Arif P Prabowo; Syamsurijal Rasimeng; Medi K Putri; Suharno
Jurnal Inovasi Teknologi Vol 2 No 2 (2021): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jit.v2i2.4254

Abstract

This research was conducted in Pesisir Barat Regency. This study aims to calculate the estimated potential gold mineral content Gold is formed as a result of the residual solution of magma being uplifted and deposited at high temperatures and pressures. The gold mineral in this area is a ) low sulphidation hydrothermal gold deposit epithermal type (in the form of quartz veins, with carrier minerals containing metals and non-metals. This research uses resistivity method. Interpretation is done by analyzing the resistivity 2D cross section. The interpretation of the gold mineralization zone is associated with the source rock (volcanic) which has a resistivity value of 500Ω.m. Based on resistivity modeling, assuming the source rock is an andesitic-basaltic igneous rock with a density of 2.8 g/cm3 and a maximum depth of 30 meters, it is estimated that the mineral content (Au) in this research location is in the range of (0,3 – 1,5) tons.
Perbandingan Penggunaan Matlab dan Python Dalam Penentuan Episenter Gempa; Studi Kasus Gempa Laut Banda 06 Mei 2020 Arsy Nurrochman; Syamsurijal Rasimeng
Jurnal Ilmu Fisika dan Pembelajarannya (JIFP) Vol 4 No 2 (2020): Jurnal Ilmu Fisika dan Pembelajarannya (JIFP)
Publisher : Program Studi Pendidikan Fisika, UIN Raden Fatah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (637.059 KB) | DOI: 10.19109/jifp.v4i2.5993

Abstract

Laut Banda merupakan laut dengan lempeng Samudra yang termuda di planet ini. Lempeng yang berusia sekitar 5jt tahun ini menunjukkan sedikitnya 20 gempa dalam satu bulan. Jumlah ini menandakan bahwa laut banda adalah laut yang aktif dalam mengekspansi dirinya. Oleh karenanya perlu dilakukan penentuan titik sumber gempa yang dapat ditentukan dengan menggunakan promgram Matlab ataupun Phyton. Pada dasarnya untuk mendapatkan lokasi episenter gempa dapat dilakukan dengan beberapa cara, seperti metode Grid Search, Geiger, dan Random Search. Selain itu pula pemrograman komputasi dapat menggunakan beberapa applikasi, dalam hal ini kami menggunakan perbandingan antara software Matlab dan Phyton. Penentuan waktu terjadinya gempa dilakukan menggunakan Diagram Wadati yang kemudian akan dilanjutkan dengan metode 3D Grid Search yang dapat memberikan informasi mengenai titik gempa secara 3D dengan memanfaatkan nilai RMS (root mean square). Pada penelitian ini bertujuan untuk melakukan relokasi hiposenter gempabumi yang terjadi di wilayah Laut Banda pada 6 Mei 2020 dengan menggunakan metode Grid Search 3D pada kecepatan 1D. Nilai RMS yang didapat dengan menggunakan program Matlab dan Phyton pada penelitian ini berturut turut adalah 4.7695e-005 di iterasi ke-48 dan 0.1701405200291348 pada iterasi ke-12. Kata Kunci: 3D Grid Search, Diagram Wadati, Laut Banda, Matlab, Phyton
Analysis and Zonation of Land Vulnerability Areas in Pekon Karangrejo Ulubelu Tanggamus Using Microzonation Method Eko Rananda; Lintang Prabowo; Arief Putih Prabowo; Syamsurijal Rasimeng; Ida Bagus Suananda Yogi
Jurnal Geofisika Vol 18 No 1 (2020): Jurnal Geofisika
Publisher : Himpunan Ahli Geofisika Indonesia (HAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36435/jgf.v18i1.420

Abstract

Abstract.Ulubelu Tanggamus is an area that have geothermal energy potential. This region consists of a geological structure in the form of graben and reverse fault formed between Mount Rendingan and Mount Kukusan. Identifications that can be done include surveys to map soil characteristics in shaking responses using microzonation methods. This study aims to analyze the values ​​of dominant frequency, dominant period, Vs30 and amplification. The stages of the research carried out are processing data to obtain dominant frequency, calculating the value of the dominant period, calculating the value of Vs30 and the amplification value, and making a map of the soil vulnerability of the UlubeluTanggamus area. Based on the distribution of the dominant frequency values, the UlubeluTanggamus geothermal area is dominated by a dominant Frequency (F0) >0.5Hz which is expected to be a very thick surface thickness of sediments more than 30m. The distribution of the dominant period value obtained is (T0)>1 where the character of the sedimentary rock type is very soft consisting of alluvial material formed from sedimentation of deltas, top soil, and mud. The distribution of the Vs30 value is dominated by the value of 100 <Vs30<200 and obtains an amplification value of 2<A0<6 times where the area is an area with a moderate risk category to the danger of soil vulnerability.
Pemisahan anomali regional-residual data gayaberat daerah Karangsambung Jawa Tengah menggunakan metode trend surface analysis Ledia Damayanti; Syamsurijal Rasimeng; Ilham Dani
Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika Vol 3 No 2 (2020): Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jtf.2020.3.2.2765

Abstract

Pemisahan anomali regional-residual pada metode gravitasi di daerah Karang Sambung Jawa Tengah menggunakan metode tren surface analysis. Pemisahan daerah ini dibuat dengan menggunakan bahasa program Matlab dan kemudian dibuat penampangnya dalam software Surfer. Interpretasi kualitatif dilakukan dengan mengamati data gayaberat berupa anomali Bouguer. Sedangkan Interpretasi kuantitatif dilakukan untuk memahami lebih dalam hasil interpretasi kualitatif dengan membuat penampang gayaberat pada peta kontur anomali. Berdasarkan hasil analisis spektrum hasil penapisan dengan lebar jendela 23x23 km didapatkan peta anomali regional. Nilai anomali residual yang didapat berkisar antara -45 sampai 30 mGal yang menunjukkan pola anomali negatif hingga positif. Anomali negatif berkisar antara -45 sampai -10 mGal, sedangkan anomali positif berkisar antara 0 sampai 30 mGal.
Co-Authors Achmad Subari Aisah Yuliantina Akroma Hidayatika Ambrosius Hernawan Wibisono Amelia Isti Ekarena Andrian Wilyan Djaja Annur Istikomah Aprillia Yulianata Arief Putih Prabowo Arif P Prabowo Arif P Prabowo Arsy Nurrochman Assegaf, Muhammad Alimuddin Hamzah Ayu Safira, Ayu Azis Riyanti Bagus Sapto Mulyatno Dani, Ilham Dewi Wijayanti Dewi Wijayanti Dewi, Soraya Tiana Egie Wijaksono Eko Rananda Elen Novia Limswipin Emir Dzakwan Kamal Zein F Alami Fadhil Muhammad Nizam Fahruddin Fahruddin Farrasha, Muthia Firda Amalia Gita Purna Rae Wanudya Gusti Aldy Haqqie Ramadhan Hesti Hesti Hidayat Hidayat Hilman Sabiq Ibrahim Ibrahim Ida Bagus Suananda Yogi Ida Bagus Suananda Yogi Ida Bagus Sunanda Yogi Idabagus S Yogi Iis Ratna Sari Ilham Dani Ilham Dani Istikomah, Annur Ivana Jayarani Ivana Jayarani Sitompul K Karyanto Karyanto, Karyanto La Ode Safiuddin La Ode Safiuddin Ledia Damayanti Lintang Prabowo Luthfi Rahmawati Maria Nova NafTalita Masdar Helmi Medi K Putri Mhd Azri Pangaribuan Muhammad Fikri Azhari Muhammad Nasri Muhammad Nurul Muhammad Rasyid Ridho Mustaid Yusuf Nandi Haerudin Nando Liven Konstanta Noor Muhammad Indragiri Nurlina Nurlina Ordas Dewanto PM Haidar Pratama, Tectona Putra Epriyan Rahmat C Wibowo Rahmawati, Luthfi Rahmi Mulyasari Ramadhan, Haqqie RC Wibowo Restu Wildanu Ahadi Ririn Yulianti Rudianto Rudianto Rustadi ., Rustadi Rustadi Rustadi S Suharno Sabrianto Aswad, Sabrianto Sakka Sakka Sari, Iis Ratna Sianturi, Rizky J. Soulthan Salahudin Al Ayubi Subarsyah Subarsyah Sudarningsih Sudarningsih Suharno Suharno Suharno Suharno Suharno Sultan Al Ghifari Supardi . Supardi Supardi Surbakti, Lucky Dolinta Syamsuddin Syamsuddin Syamsuddin, Erfan Syihab, Mufly Fadla Tiara Andika Fadila Tugiyono Tugiyono Ulfa Wahyuningsih Valentino Manurung, Andro Varenza Novita Yandi Wibowo, Rahmat Catur Widya Putri Syahranti Wijaksono, Egie Winda Styani Yuliawati Yandi, Varenza Novita Yeri, Nazhifah Ananda Yoga Kurniawan Yogi, Sunanda Zein, Emir Dzakwan Kamal