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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Neutrino : jurnal fisika dan aplikasinya INDONESIAN JOURNAL OF APPLIED PHYSICS KARST : Jurnal Pendidikan Fisika dan Terapannya JUMANTIK (Jurnal Ilmiah Penelitian Kesehatan) Proceeding Of International Conference On Education, Society And Humanity
Ahmad Luthfin
Universitas Islam Negeri Maulana Malik Ibrahim Malang
Religion Humanities Astronomy Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Nursing Physics Public Health Other

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PEMODELAN BAWAH PERMUKAAN METODE PRE-STACK TIME MIGRATION (PSTM) ISOTROPY DAN METODE PSTM ANISOTROPY HIGH ORDER MOVEOUT (HOM) Luthfin, Ahmad; Susilo, Adi; Suroso, Teguh
Jurnal Neutrino Vol 8, No 2. APRIL (2016): JURNAL NEUTRINO
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (613.427 KB) | DOI: 10.18860/neu.v8i2.3265

Abstract

Struktur bawah permukaan memiliki perlapisan yang sangat komplek, sehingga memungkinkan penjalaran gelombang seismik memiliki kecepatan yang berbeda tergantung arah rambatnya. Hal inilah yang mendasari perlunya proses pengolahan data dengan melibatkan parameter anisotropi (η). Umumnya data seismik memiliki nilai anisotropi dengan presentase tertentu, sehingga tidak semua data harus diproses dengan proses anisotropi. Ketepatan metode migrasi yang digunakan dapat menghasilkan gambar penampang struktur bawah permukaan dengan resolusi yang tinggi. Penelitian ini bertujuan untuk memodelkan struktur bawah permukaan dengan menggunakan metode PSTM isotopi (lapisan isotropi) sedangkan untuk lapisan anisotropi dimodelkan dengan metode PSTM anisotropi HOM. Hasil dari metode PSTM isotropi berupa citra, dimana lapisan pertama pada CMP 2073-CMP 2413 hasilnya jelek (beresolusi rendah), tetapi untuk lapisan kedua dan ketiga tampak bagus (beresolusi tinggi). Pada saat diproses dengan PSTM anisotropi, peneliti menggunakan nilai (η) sekitar 0,25 pada lapisan pertama. Berdasarkan hasil PSTM anisotropi pada CMP 2073-CMP 2413 model lapisan pertama menghasilkan citra beresolusi lebih tinggi (lebih bagus), sedangkan model lapisan kedua dan ketiga tidak mengalami kenaikan resolusi yang signifikan. Hal ini karena rasio far offset dan kedalaman lapisan pertama besar menyebabkan lapisan pertama mengalami efek anisotropi, sedangkan lapisan kedua dan ketiga tidak mengalami efek anisotropi
IDENTIFICATION OF FAULT CONTINUITY AND HOT WATER RESERVOIR USE SCHLUMBERGER CONFIGURATION RESISTIVITY METHOD IN CANGAR Widyasandy, Dhony; Nugraha, Aulia K; Kurniawan, Husni Cahyadi; Luthfin, Ahmad
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 13, No 1 (2020): October
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v13i1.8282

Abstract

Research that uses the Schlumberger configuration resistivity method had been conducted in Cangar. The purpose of this study is to identify cracks/faults and potential hot springs use resistivity well analysis and correlate it with rock lithology in Cangar, East Java. Data acquisition is carried out using 3 tracks with 10 sounding points. The space between points is 50 meters. The rock resistivity values obtained were 9945 Ωm, 7360 Ωm, and 5573 Ωm which were thought to be breccia layers and functioned as hot springs. This estimation is strengthened by the existence of a layer of breccia-andesite because this layer is very good as a water reservoir. In addition, based on the lateral cross-section on lane 1, there was a decrease in boulder-sized breccia-andesite layers; this decrease was the production of faults.
IDENTIFIKASI KEMENERUSAN SESAR DAN POTENSI RESERVOAR AIR PANAS CANGAR DENGAN MENGGUNAKAN METODE GRAVITASI Husni Cahyadi Kurniawan; Dhony Widyasandy; Ahmad Luthfin; Aulia K Nugraha; Agus Budi Jatmika
Karst : JURNAL PENDIDIKAN FISIKA DAN TERAPANNYA Vol 5 No 1 (2022): Karst: Jurnal Pendidikan Fisika dan Terapannya
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Muslim Maros

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46918/karst.v5i1.1284

Abstract

Telah dilakukan penelitian tentang potensi panas bumi di daerah pemandian air panas Cangar Kota Batu Jawa Timur berdasarkan metode gravity dengan menggunakan alat Gravity-meter La Coste & Romberg seri G1053. Pengambilan data dilakukan di 20 titik pengamatan disekitar Pemandian air panas Cangar. Hasil penilitan nilai kontras densitas sayatan AA’ dibagi menjadi 3 lapisan utama secara umum, ketiga lapisan batuan tersebut masing-masing adalah : Andesit di bagian dasar pada kedalaman 0,5 km – 1 km nilai densitas sebesar 2,617 gr/cm3. Yaitu di lapisan atasnya terdapat breksi-andesitik dengan nilai densitas yang tidak jauh berbeda yaitu 2,680 gr/cm3 dengan kedalaman 0,3 – 0,5 km. Sedangkan dekat permukaan berupa endapan tufa andesitik dengan nilai densitas yaitu 2,685 gr/cm3. Untuk nilai kontras densitas Sayatan BB’ dibagi menjadi tiga lapisan batuan utama diantaranya : Andesit dengan nilai densitas 2,62 gr/cm3 pada basement atau dasar lapisan dari model tersebut (kedalaman 0,5 – 1 km). Kemudian breksi-andesitik dengan nilai densitas 2,678 – 2,695 gr/cm3. Pada bagian dekat permukaan berupa tufa andesitik dengan nilai densitas berkisar 2,66 – 2,677 gr/cm3. Dengan adanya lapisan breksi-andesit ini sangat baik sebagai penampung air karena memiliki porositas yang tinggi.
Eksplorasi Sebaran Penyakit Demam Berdarah Dengue (DBD) dan Pneumonia di Kota Malang Swaidatul Masluhiya AF; Ragil Catur Adi Wibowo; Ahmad Luthfin
JUMANTIK (Jurnal Ilmiah Penelitian Kesehatan) Vol 7, No 2 (2022)
Publisher : Prodi Kesehatan Masyarakat Fakultas Kesehatan Masyarakat UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.242 KB) | DOI: 10.30829/jumantik.v7i2.10402

Abstract

Indonesia, as a country with a tropical climate, has a diverse prevalence of tropical diseases. Some tropical diseases that often occur in Indonesia such as dengue hemorrhagic fever (DHF) and pneumonia. This study aims to determine the distribution of DHF and pneumonia in Malang City from 2017-2020. This type of research is a descriptive study with the population and sample of patients with DHF and pneumonia in Malang City obtained from the Malang City Health Office from 2017 to 2020. The data collection technique used in this study was secondary data from the Malang City Health Office. The data that has been collected was then analyzed univariately using the Microsoft Excel program to describe the trend of cases of DHF and pneumonia in the last four years. Sukun District is the District with the highest incidence of DHF in Malang City, with 291 cases. In comparison, Blimbing District is the District with the highest pneumonia cases in Malang City, with a total of 1,914 patients. The highest chances of DHF and pneumonia in Malang City occurred in 2019 as many as 527 cases and 2,716 cases spread across 16 health centers and five sub-districts in Malang City.Keywords: DHF, Malang City, Pneumonia, spread
Analisis Kerentanan Bahaya Gempa Bumi Tektonik Merusak Berdasarkan Fungsi Atenuasi Zhao Di Nusa Tenggara Timur Irjan Irjan; ahmad luthfin; Septiana Nur Hidayati
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 12, No 2 (2022): IJAP Volume 12 ISSUE 02 YEAR 2022
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v12i2.59373

Abstract

The East Nusa Tenggara (NTT) region which is located between 2 earthquakes, namely the tectonic plate subduction zone in the south and the Back Arc Thrust zone in the north, is very interesting to study considering the very active tectonic earthquakes that are significantly destructive in this region which have earthquake characteristics shallow and large magnitude. A study has been carried out that aims to determine the vulnerability of the tectonic earthquake to significant damage when seismic waves pass through these islands. The vulnerability information generated can be useful as a reference for disaster mitigation and factors that need to be considered before carrying out development in the NTT region. The input data studied are shallow earthquake data from 1997-2018 at a depth of 60 km and a magnitude M≥5 SR at coordinates 8o 30’-13o 10’ South Latitude and 118o 30’-125o 30’ East Longitude. The number of earthquake events is 198 data. The attenuation function used refers to the attenuation function Zhao, et. al 2006. The results of the study show that. the vulnerability of the tectonic earthquake to significant damage in the East Nusa Tenggara region clustered on the MMI V-VIII intensity scale. Most of these islands are clustered on the MMI VII-VIII intensity scale and only a small part is clustered on the V-VI MMI intensity scale. The NTT region which has an intensity scale of VII-VIII MMI has a high vulnerability to destructive earthquakes, so it is necessary to disseminate disaster mitigation from an early age to the public about the threat of earthquakes and it is recommended that this information be used as a reference in developing the area.
Identification of Geothermal Distribution in The Banyu Biru Hot Water Source using The Magnetic Method Ahmad Luthfin; Nur Amilatu Jubaidah
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 13, No 2 (2023): IJAP Volume 13 ISSUE 02 YEAR 2023
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v13i2.72305

Abstract

The geothermal phenomenon in Banyu Biru hot springs in Gondangwetan Village, Jatikalen District, Nganjuk Regency, has the potential to be developed into a tourist spot and an alternative renewable energy source that is environmentally friendly; for example, a geothermal power plant. So it is necessary to know the distribution of geothermal reservoirs and how much potential energy is contained. This research aims to determine the distribution of geothermal energy in the research area and its geological structure. This study used the Magnetic Method for secondary data obtained from NOAA satellite data. Data acquisition with an area of 2000 meters x 2000 meters obtained 100 data with a spacing of 200 meters. Based on research results, geothermal bursts have a low anomaly value of -50 nT to 25 nT. The low anomaly distribution can be used to determine the geothermal distribution in the area, assuming that areas with the same anomaly value indicate the presence of geothermal energy. The geology of the study area has five layers, namely: Topsoil (soil) has a susceptibility value of 0.0000377 SI, Alluvium has a susceptibility value of 0.00144513 SI, Tufan Clay has a susceptibility value of 0.00692407 SI, Limestone Tuff has a susceptibility value of 0.125713399 SI and Breccia (Andesite and Basalt) has a susceptibility value 0.0126292 SI. The depth of the geothermal source in the study area is ± 250 meters below the surface.
Identifikasi Batuan Pondasi Candi (Andesit) di Bawah Permukaan Sekitar Candi Badut dengan Metode Geolistrik Resistivitas Ahmad Luthfin; Husni Cahyadi K; Jufri Jufri
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 10, No 2 (2020): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v10i2.41384

Abstract

Situs Candi Badut diprediksi memiliki pondasi yang melebar persegi empat untuk menopang bangunan inti candi agar tidak ambles. Situs Candi Badut berdasarkan bentuk fisik bagian atas, susunannya kurang lengkap, sehingga dimungkinkan masih terdapat sisa–sisa batuan yang memenuhi fungsi utuh dari candi tersebut masih terkubur. Berdasarkan asumsi tersebut maka kegiatan penelitian kali bertujuan untuk mengindentifikasi batuan pondasi Candi Badut dan batuan andesit yang terkubur disekitar bangunan candi. Metode yang digunakan adalah metode geolistrik resistivitas, metode ini sering digunakan untuk melakukan investigasi bawah permukaan bumi, karena metode geolistrik resistivitas dapat menentukan jenis dan struktur batuan tanpa harus menggali, hanya berdasarkan sebaran resisitivitas dibawah permukaan. Alat yang digunakan adalah Resisvitimeter OYYO MC OHM lengkap beserta elektrodanya. Konfigurasi untuk susunan elektrodanya menggunakan konfigurasi wenner karena konfigurasi tersebut dianggap mampu memperoleh data yang lebih teliti dibandingkan dengan konfigurasi lainnya. Berdasarkan hasil penelitian pada keseluruhan interpolasi lintasan 1,2,3 dan 4 dengan metode geolistrik resistivitas menggunakan konfigurasi wenner dapat diketahui bahwa batuan pondasi candi (andesit) berada pada kedalaman 0,5-1,5 m,yang merupakan batuan dengan nilai resistivitas terbesar dibandingkan batuan yang lainnya dengan nilai resistivitas batuan kisaran antara 33,87 Ωm-66,8 Ωm, sedangkan pada kedalaman 1,51m-7,91m terdiri dari tanah lanau basah lembek dan tanah lanau, pasiran, tidak ditemukan batuan candi (andesit) yang terkubur didalam tanah.
Analysis of Peak Ground Acceleration (PGA) and Modified Mercalli Intensity (MMI) Scale using PSHA Method in Lampung Province Yahya, Muhammad Harun; Ashari, Almaida Enggar; Syahbana, Arifan Jaya; Kuntjoro, Yanif Dwi; Luthfin, Ahmad
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.73063

Abstract

Earthquakes are inevitable natural disasters that are challenging to predict, yet effective mitigation is crucial. Lampung Province, located in Indonesia, faces significant tectonic activity due to the Sumatra Fault System (SFS) and the subduction of the Indo-Australian and Eurasian plates. Its strategic location as the gateway to Sumatra Island further underscores the importance of understanding earthquake hazards in the region. This study analyzes earthquake risks in Lampung Province using a micro-scale approach that integrates Peak Ground Acceleration (PGA) and Modified Mercalli Intensity (MMI) values through the PSHA method. The PSHA method identifies earthquake microzonations and generates PGA values that are then converted to the MMI scale to determine the intensity of earthquake strength. The mapping of Lampung Province identified five zones with different levels of earthquake hazard, ranging from VII to XI MMI with varying PGA values. The first zone, on the VII MMI scale, has a PGA ranging from 0.20 to 0.25g. The second zone, in the VIII MMI scale category with PGA ranging from 0.20 to 0.40g. The third zone, falls within the IX MMI scale category with PGA ranging from 0.40 to 0.70 g. The fourth zone is categorized as X MMI scale with PGA values ranging from 0.70 to 1.00g. The fifth zone, has a scale of XI MMI with a range of PGA values between 1.00 and 2.50 g. Areas with higher PGA and MMI scales indicate a greater potential for severe damage, highlighting the need for targeted mitigation strategies in high-risk zones. These findings provide a foundation for disaster preparedness and urban planning in Lampung Province.
RESEARCH-BASED DISASTER MITIGATION EDUCATION BASED ON THE NUSA TENGGARA CASE STUDY Luthfin, Ahmad
PROCEEDING OF INTERNATIONAL CONFERENCE ON EDUCATION, SOCIETY AND HUMANITY Vol 1, No 1 (2023): First International Conference on Education, Society and Humanity
Publisher : PROCEEDING OF INTERNATIONAL CONFERENCE ON EDUCATION, SOCIETY AND HUMANITY

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia is an archipelagic country located in the Pacific ring of fire, making the Indonesian nation has many islands and is prone to earthquakes. One of the islands in Indonesia is the Nusa Tenggara archipelago. It has a Back Arch Trust due to pressure under the Australian continent, resulting in the Nusa Tenggara region being prone to earthquakes. Administratively, Nusa Tenggara comprises the Provinces of West Nusa Tenggara and East Nusa Tenggara. This research aims to analyze an area on the island of Nusa Tenggara related to its vulnerability to earthquake disasters. The method is carried out by analyzing literature studies to obtain the distribution of disasters and determine the Mitigation suggestions to be determined. Based on research results from academics who have published journals as a reference for determining policies in disaster mitigation. Based on the research and literature studies, it can be concluded that the Nusa Tenggara area is prone to earthquakes.For this reason, mitigation activities in the Nusa Tenggara Islands must be carried out continuously and sustainably so that the community understands related to Disaster Mitigation as a whole. As for the Mitigation that we suggest, it is necessary to socialize the Map of earthquake-prone areas to be used as a reference for development, Construction of earthquake-resistant houses, good cooperation between researchers and the government in the socialization of Mitigation, Using lightweight and shock-resistant building materials, mitigation education that is integrated with the curriculum in the Nusa Tenggara region.
Mapping of Destructive Tectonic Earthquakes in the West Nusa Tenggara (NTB) Region Based on the Zhao Attenuation Function Luthfin, Ahmad; Irjan, Irjan; Hidayati, Septiana Nur
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 12 No. 2 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v12n2.p156-166

Abstract

NTB is a group of small islands located between the earthquake zone, namely in the south there is a subduction zone of the Eurasian and Indo-Australian plates and in the north, there is a back-arc fault or Flores Thrust. Earthquakes in this area are very active in the form of shallow tectonic earthquakes of large magnitude, so the risk of disaster is very high. Based on this, our research aims to map the distribution of destructive earthquakes using the attenuation function Zhao, released in 2006. The Zhao attenuation function has been applied to earthquake sources in subduction zones which are inputs for seismic hazards in various parts of the world, because the distance uncertainty factor used has better accuracy. The distribution of earthquake epicenter points in the West Nusa Tenggara region is clustered in four places, namely the Eurasian and Indo-Australian plate subduction zones in the sea south of the West Nusa Tenggara islands, the non-volcanic zone to the south of the West Nusa Tenggara islands, the volcanic zone to the east, and the Back Arc Thrust zone in the waters north of the NTB islands. Meanwhile, the hypocenter distribution is spread majorly on the Eurasian plate. Most of the islands of West Nusa Tenggara are characterized on the MMI VII-VIII intensity scale, and only a small part is characterized on the V-VI MMI intensity scale. The implications of the results of this research are useful in disaster mitigation, so it is hoped that there will be a reduction in disaster risk.
Co-Authors Adi Susilo Agus Budi Jatmika Arifan Jaya Syahbana Ashari, Almaida Enggar Aulia K Nugraha Dhony Widyasandy Hidayati, Septiana Nur Husni Cahyadi K Husni Cahyadi Kurniawan Husni Cahyadi Kurniawan, Husni Cahyadi Irjan Irjan Irjan Irjan Jufri Jufri Kuntjoro, Yanif Dwi Nugraha, Aulia K Nur Amilatu Jubaidah Ragil Catur Adi Wibowo Septiana Nur Hidayati Swaidatul Masluhiya AF Teguh Suroso Widyasandy, Dhony Yahya, Muhammad Harun