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All Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan JGE (Jurnal Geofisika Eksplorasi) Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir JOURNAL ONLINE OF PHYSICS Jurnal Geocelebes Journal of Geoscience, Engineering, Environment, and Technology JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) BULLETIN OF THE MARINE GEOLOGY Journal of Engineering and Scientific Research (JESR) Jurnal Geofisika GEOGRAPHY : Jurnal Kajian, Penelitian dan Pengembangan Pendidikan Seandanan: Jurnal Pengabdian pada Masyarakat Indonesian Journal of Spatial Planning Jurnal Riset Fisika Indonesia Journal of Geology and Exploration JURNAL TEKNIK GEOLOGI : Jurnal Ilmu Pengetahuan dan Teknologi JAGE Jurnal Mitrawarga GEMBIRA (Pengabdian Kepada Masyarakat) OPHIOLITE : Jurnal Geologi Terapan Bulletin of Geology
Rahmi Mulyasari
Universitas Lampung
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Journal : JGE (Jurnal Geofisika Eksplorasi)

 1 
GEOTHERMAL POTENTIAL ON SUMATRA FAULT SYSTEM TO SUSTAINABLE GEOTOURISM IN WEST SUMATRA Hari Wiki Utama; Rahmi Mulyasari; Yulia Morsa Said
Jurnal Geofisika Eksplorasi Vol 7, No 2 (2021)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v7i2.128

Abstract

Sumatra Island is an island that is traversed an active ring of fire at Barisan Range which is related to the active Sumatra fault system and geothermal manifestations. It is associated with geothermal manifestations in Cubadak, Talu, Bonjol, and Rimbo Panti, Pasaman Regency, and West Pasaman Regency, West Sumatra Province, as an indication of a geothermal system connected to the Sumatra Fault System from the Sianok Segment and the Talamau Volcano Complex. Sustainable geotourism has become effective for sustainable development of geotourism, the geothermal energy direct utilization. The purpose of this study is to provide sustainable geotourism from geothermal potential in the fault system, taking into account aspects of village geotourism, ecotourism, ecoculture, and education. The methodology used in this study is to collect data on geothermal manifestations from regional geological maps and field observations in geothermal manifestation areas by considering sustainable geotourism. A simple model of sustainable geotourism is made. Study results indicate several locations of potential geothermal manifestations to be used as sustainable geotourism associated with the Sumatra Fault System and the Talamau Volcano Complex.
APLIKASI METODE GEOLISTRIK RESISTIVITAS UNTUK ANALISIS BIDANG GELINCIR DAN STUDI KARAKTERISTIK LONGSORAN DI JALAN RAYA SUBAN BANDAR LAMPUNG Rahmi Mulyasari; IG Boy Darmawan; Dersan Surya Effendi; Sugeng Purwo Saputro; Hesti Hesti; Akroma Hidayatika; Nandi Haerudin
Jurnal Geofisika Eksplorasi Vol 6, No 1 (2020)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v6i1.61

Abstract

Pidada Urban Village, Panjang District, Bandar Lampung is an area that has medium to high landslide potential. One of landslides prone area triggered by rain located on Jalan Raya Suban. The slip surface areas under water-saturated soil is one of causes of landslides triggered by rain. Geophysical method used to detect slip surface is 2D Resistivity Method of Wenner-Schlumberger Configuration. In this study, an analysis of the slip surface has been carried out with the 2D resistivity method of the Wenner-Schlumberger Configuration and determination characteristic of landslide on Jalan Raya Suban. Based on the results of study indicated that the subsurface lithology consists of layers of tuff sediment, sandy clay and breccia. The slip surface is estimated at the boundary the layers of tuff sediment layer and sandy clay with depth (5-15) meters from the ground surface. The results of analysis and observation showed that type of landslide is translational fine-grained soil. Types of slope reinforcement that can be applied are civil and vegetative techniques.
ANALISIS KARAKTERISTIK LAPISAN SEDIMEN BERDASARKAN DATA MIKROTREMOR DI AREA RUMAH SAKIT PENDIDIKAN UNILA Hesti Hesti; Suharno Suharno; Rahmi Mulyasari; Akroma Hidayatika
Jurnal Geofisika Eksplorasi Vol 7, No 2 (2021)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v7i2.123

Abstract

Provinsi Lampung memiliki kondisi geografis kompleks,  dilewati jalur bukit Bukit barisan Barisan dan terletak diantara dua lempeng yaitu Indo-Australia dan Eurasia. Provinsi Lampung juga  merupakan wilayah yang dekat  dengan Samudera Hindia dan terletak pada zona Sesar Semangko (Sumatra Transform Fault Zone) yang terbentang dari Aceh sampai Teluk Semangka Lampung. Dengan demikian penataan wilayah dan pembangunan infrastruktur yang berbasis mitigasi gempabumi merupakan hal yang sangat penting dilakukan. Tujuan penelitian ini adalah mengetahui karakteristik lapisan batuan sedimen pada area pembangunan Rumah Sakit Pendidikan Universitas Lampung (RSP Unila) sebagai bagian dari tahapan mitigasi bencana gempabumi.  Penelitian ini dilakukan dengan menggunakan metode mikrotremor dan analisis geologi permukaan. Data pengukuran metode mikrotremor dianalisis dengan menggunakan metode analisis Horizontal Vertical Spectrum Ratio (HVSR) untuk mendapakan nilai amplifikasi (A0) dan frekuensi dominan (f0).Hasil dari analisis HVSR diperoleh nilai frekuensi dominan (f0) berkisar 0.65–1.2 Hz, amplifikasi (A0) berkisar 3.33–5.62, dan nilai periode dominan (T0) 0.6–1.5 sekon. Nilai A0, f0, T0 diinterpreasikan dengan mengacu data literatur dan geologi permukaan yang relevan. Hasilnya menunjukkan bahwa daerah penelitian memiliki jenis lapisan sedimen yang rentan terhadap peristiwa gempabumi.
INTERPRETASI GEOFISIKA BIDANG GELINCIR PALEO-ROCKSLIDE PARANGTRITIS Akroma Hidayatika; Suharno Suharno; Rahmi Mulyasari; Hesti Hesti; Bella Restu Juliarka
Jurnal Geofisika Eksplorasi Vol 6, No 2 (2020)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v6i2.75

Abstract

Parangtritis has a rock fall hazard area with a medium to high level of risk. In Parangtritis, there was a large scale paleo-rockslide that involved more than 800 million m3 of rock mass with an area of 1500 m x 2700 m. This is a significant factor in changing the landscape. This research uses 9 Audio-MagnetoTelluric (AMT) primary data points. Using the distance between points 750 m within a 2 km x 2 km study area. The location focused on the western side of the paleo-landslide area in Parangtritis Village. Processing AMT data using the help of MT-INV and RockWorks software. The result of one-dimensional inversion consists of 3 layers. Indicates a low resistivity value (0-10 Ωm) interpreted as beach deposition and sand dune, medium resistivity (50 - 160 Ωm) for Wonosari limestone and high resistivity ( 170 Ωm) for Nglanggran andesite breccias. The average thickness of the first layer is 44 m and the second layer reaches 175 m. Based on the resistivity structure of the AMT data, the interpretation of the boundary contact between the Wonosari limestone and the Nglanggran andesite breccia can act as a slip field in a depth of about 250 m This field is a passive fault field controlled by the Girijati fault in the east of the study area.
IDENTIFIKASI ZONA POTENSI LIKUIFAKSI DI KOTA BANDAR LAMPUNG BERDASARKAN ANALISIS DATA SPASIAL Mahli, Razki Alfatah Khairu; Dewi, Syeikha Puspita; Manullang, Paulina Beny Claudia; Utama, Hari Wiki; Mulyasari, Rahmi
JGE (Jurnal Geofisika Eksplorasi) Vol. 10 No. 3 (2024)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v10i3.429

Abstract

Likuifaksi terjadi ketika tanah yang jenuh air kehilangan kekuatannya akibat pergerakan tanah yang disebabkan oleh gempabumi. Keberadaan sesar-sesar aktif di daerah penelitian meningkatkan risiko aktivitas gempabumi yang dapat memicu likuifaksi. Tujuan dari penelitian ini untuk melakukan identifikasi potensi likuifaksi di Kota Bandar Lampung. Metode yang digunakan pada penelitian ini menggunakan data hidrogeologi, data geologi, dan data Vs30 dengan menggunakan metode fuzzy overlay untuk mendapatkan peta zonasi kerentanan likuifaksi.  Litologi daerah penelitian terdiri dari batuan dasar hingga endapan aluvial dan sedimen lainnya yang bersifat nonkohesif. Terdapat tiga jenis tingkatan akuifer, yaitu akuifer sangat rendah, akuifer rendah, dan akuifer tinggi. Hasil analisis menunjukkan bahwa wilayah pesisir penelitian  yang memiliki banyak endapan aluvial pantai (Qa) dan nilai Vs30 terendah (225-401 m/s), memiliki potensi likuifaksi tertinggi. Potensi ini didukung oleh muka air tanah yang dangkal, intrusi air laut, serta adanya sesar aktif. Berdasarkan analisis peta zonasi kerentanan likuifaksi pada wilayah pesisir penelitian menunjukkan potensi likuifaksi sedang-tinggi.
Co-Authors adelia, Elsa Adelyra, Sabrina Akbari, Irgi Akroma Hidayatika Akroma Hidayatika Arianto, Khalila Wardah Arif P Prabowo Az Zahra Putri Sugiarto Berliana, Calista Rizky Budi Brahmantyo Chairunisa, Aina Wijdan Dani, Ilham Darmawan, I Gede Boy Dersan Surya Effendi Dewi, Syeikha Puspita Dwi Ratih Purwaningsih Fadila, Tiara Andika Fadillah, Muhammad Fatuha, Akmal Alfian Hantoro, Andriansyah Surya Hari Wiki Utama Haryan, Nabilah Bintang Herlian, Faiza Attallah Hesti Hesti Hidayatika, Akroma I Gede Boy Darmawan I Gede Boy Darmawan I Gede Boy Darmawan Ida Bagus Suananda Yogi Ida Bagus Suananda Yogi Idabagus S Yogi Imam Setiadi Juliarka, Bella Restu Karyanto, Karyanto Karyanto, Karyanto Kevin Bahy Taufiquds M. Aditya Makki M. Farhan Al Rasyid Mahli, Razki Alfatah Khairu Manullang, Paulina Beny Claudia Matondang, Pebriadi Halomoan Mauliza, Nadia Muh Sarkowi Muhammad Aditya Makki Muhammad Nurul Muhammad Reza Fahlefi Mulyatno, Bagus Sapto Nabilla, Meisha Nanda Hanyfa Maulida Nandi Haerudin Noviari, Salsabila Ordas Dewanto Pohan, Muhammad Arif Rizki Pranahayu Sekar Winahyu Puspita, Octa Della Rafi Rilo Pambudi Rambe, Sibgha Alfirdausi Raudhah, Amna Fithri Restu Ningsih Restu Wildanu Ahadi Rezky Ariya Dwiguna Rian Amukti Riftyani, Nur Rahma Riki Chandra Wijaya Riki Chandra Wijaya Rinda Ermana Rindiyani, Frans Siska Riza Rahardiawan Rizkiani, Deli Rizkiano, Aldika Saippudin, Muhammad Salfira, Ginanda Shella, Karina Pramay Siagian, Keisha Justina Sianturi, Rizky J. Simanjuntak, Anggun Cahyanti Soraya Tiana Dewi Sugeng Purwo Saputro Sugeng Purwo Saputro Sugeng Purwo Saputro Suharno Suharno Suharno Sultan Al Ghifari Supartoyo Supartoyo Syahrani, Hanna Aulia Syamsurijal Rasimeng Tiara Tabitha Titin Yulianti Trada, Arkaan Faruq Unila, Hesti_9201 Voanda, Dinda Fitri Wibowo, Rahmat Catur Winona Putri Prihadita Yadnya, Erlangga Rahardian Yulia Morsa Said