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Hasil Pencarian

Ditemukan 52 dokumen yang sesuai dengan query
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New York: Pergamon Press, 1981
R 552.26 BAS b
Buku Referensi  Universitas Indonesia Library
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Parfitt, Elizabeth A.
"
ABSTRACT
Fundamentals of Physical Volcanology is a comprehensive overview of the processes that control when and how volcanoes erupt. Understanding these processes involves bringing together ideas from a number of disciplines, including branches of geology, such as petrology and geochemistry; and aspects of physics, such as fluid dynamics and thermodynamics. This book explains in accessible terms how different areas of science have been combined to reach our current level of knowledge of volcanic systems. It includes an introduction to eruption types, an outline of the development of physical volcanolo. "
Chichester: John Wiley & Sons, 2011
551.21 PAR f
Buku Teks  Universitas Indonesia Library
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Sagan, Carl
New York: Time Incorporated, 1966
R 523.4 SAG p
Buku Referensi  Universitas Indonesia Library
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Oppenheimer, Clive
"A spellbinding exploration of the history's greatest volcanic events and their impacts on the history of humankind. "
Cambridge, UK: Cambridge University Press, 2011
551.21 OPP e
Buku Teks  Universitas Indonesia Library
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Andi Haikal Pratama
"ABSTRAK
Di wilayah Majalengka di daerah Sukamurni, Kecamatan Maja, rembesan minyak yang muncul di endapan vulkanik muda ditemukan. Penemuan minyak merembes di batuan termuda di Cekungan Bogor, terutama di wilayah Majalengka, memberi indikasi adanya sumber batuan yang bisa menghasilkan minyak. Penelitian ini akan dilakukan di daerah perbatasan antara Majalengka dan Cirebon. Di wilayah penelitian, survei geofisika menggunakan metode seismic aktif telah dilakukan, namun hasil yang didapatkan tidak baik karena terdapat lapisan batuan vulkanik yang menghalangi proses eksplorasi. Selain itu, pada daerah penelitian juga telah dilaksanakan survey geofisika menggunakan metode AMT, hasil inversi dan interpretasi menunjukan ketebalan batuan vulkanik pada daerah penelitian setebal 150 m. Untuk memverifikasi analisis AMT dan untuk memperbaiki resolusi resistivitas, kami melakukan survei geoelektrik. Selain itu, metode geolistrik dapat digunakan untuk mengidentifikasi kedalaman dan ketebalan batuan vulkanik dengan resolusi tinggi. Data geoelektrik telah diproses dengan menggunakan Parameter Dar-Zarouk yang mengasumsikan bahwa bumi bersifat heterogen dan anisotropi yang memiliki variasi resistivitas ke segala arah. Pendekatan memperkirakan nilai resistivitas anisotropi dengan menghitung resistivitas longitudinal dan transversal.

ABSTRACT
Abstract In the region of Majalengka in the area Sukamurni, District Maja, oil seepage that emerged in young volcanic deposits was discovered. The discovery of oil seeps in the the youngest rocks in Bogor Basin, especially in the region of Majalengka, gives an indication of the presence of source rock that can generate oil. The research will be carried out in the border area between Majalengka and Cirebon. In the research area, geophysical survey using active seismic method has been carried out, however, the results obtained because of the volcanic layer that inhibit the exploration process. In addition, in the research area has also been conducted geophysical survey using AMT method, the inversion and interpretation results showed the thickness of the volcanic rocks as thick as 150 m. To verify the AMT analysis and to improve resistivity resolution we performed geoelectric survey. Moreover, geoelectric method can be used to estimate the depth and thickness of volcanic rocks in a high resolution. The geoelectric data have been processed by using Dar Zarouk Parameters that assumes the earth is heterogeneous and anisotropy which has resistivity variationin all directions and has irregular shapes. This approach also estimates the value of resistivity media by calculating the longitudinal and transverse resistivity. "
2017
S67012
UI - Skripsi Membership  Universitas Indonesia Library
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Tiara Shafina Adzra
"Pengembangan industri dan eskalasi ekonomi membuat pembangunan infrastruktur untuk pemukiman secara masif meningkat hingga kebutuhan dasar untuk bahan bangunan pun bertambah. Pemenuhan kebutuhan ini dimaksimalkan dengan produksi tambang galian yang sudah banyak dilakukan di Indonesia, khususnya Banyumas. Untuk itu, dilakukan penelitian untuk perencanaan kawasan tambang batuan baru berupa tambang batuan basalt di Kecamatan Jatilawang, Banyumas setelah ditemukannya indikasi berupa singkapan batuan basaltik. Penelitian dilakukan dengan menggunakan metode geolistrik DC resistivity konfigurasi wenner-alpha yang selanjutnya dibuat pemodelan 2D dan 3D untuk mendapat analisis sebaran dan volume batuan basalt yang akan ditambang. Survei geolistrik menggunakan 6 lintasan sepanjang 235 meter dan 48 elektroda dengan hasilnya diolah menggunakan inversi least-square untuk mendapat penampang 2D dan metode gridding IDW Anisotropic untuk mengetahui model 3D. Dari pemodelan tersebut, didapat hasil sebaran batuan basalt berada pada pada rentang resistivitas 15,95–55,95 Ωm untuk basal resistivitas rendah hingga 55,95–452,62 Ωm untuk batuan basal masif. Berdasarkan hasil analisis survei, potensi batuan basalt yang berada di Kecamatan Jatilawang dapat digunakan sebagai bahan tambang dengan sebaran yang membentang dengan arah barat-timur. Berdasarkan pemodelan 3D, basalt di jatilawang memiliki estimasi volume sebesar 1.969.308 bank cubic meter (bcm), dengan 555.343 bcm batuan basalt resistivitas rendah dan 1.413.965 bcm batuan basal resistivitas tinggi. Batuan basalt yang bersifat masif dan lebih kuat ini berada di bagian utara penelitian yang ditunjukan dengan adanya singkapan hingga elevasi 156 meter. 

Industrial development and economic escalation have made infrastructure development for settlements massively increased that the basic needs for building materials have also increased. The fulfilment of this need is maximized by the production of quarrying which has done a lot in Indonesia, especially Banyumas. In this case, research was carried out for planning a new basalt rock mine in Jatilawang District, Banyumas after indications of basaltic rock outcrops are found. The research was carried out using the DC resistivity geoelectric method with wenner-alpha configuration which the result then made into 2D and 3D modelling to obtain an analysis of the distribution and volume of the basalt rock to be mined. The geoelectrical survey used 6 tracks with a length of 235 meters and 48 electrodes and the results were processed using the least-square inversion to obtain 2D cross-sections and the gridding IDW Anisotropic method to determine the 3D model. From this modelling, the results show that the distribution of basalt rocks is in the resistivity range of 15,95–55,95 Ωm for low resistivity basalt to 55,95–452,62 Ωm for massive basalt. Based on the results of the survey analysis, the potential for basalt rock in Jatilawang District can be used as a mining material with a distribution that stretches in a west-east direction based on 3D modelling having a volume of 1.969.308 bcm, with 555.343 bcm of low resistivity basalt rock and 1.413.965 bcm of basalt rock high resistivity. This massive and stronger basalt rock is located in the northern part of the survey which is indicated by the presence of outcrops up to an elevation of 156 meters."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2023
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
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Sagan, Carl
"Summary:
Astronomer Carl Sagan's landmark 13 part science series takes you on an awe inspiring cosmic journey to the edge of the universe and back, aboard the spaceship of the imagination."
Jakarta: KPG (Kepustakaan Populer Gramedia), 2017
523.1 SAG k
Buku Teks  Universitas Indonesia Library
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Miller, James
"This textbook introduces the theories and practical procedures used in planetary spacecraft navigation. Written by a former member of NASA's Jet Propulsion Laboratory (JPL) navigation team, it delves into the mathematics behind modern digital navigation programs, as well as the numerous technological resources used by JPL as a key player in the field. In addition, the text offers an analysis of navigation theory application in recent missions, with the goal of showing students the relationship between navigation theory and the real-world orchestration of mission operations."
Switzerland: Springer Cham, 2019
e20502530
eBooks  Universitas Indonesia Library
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Moore, Patrick
New York: W.W. Norton & Co., 1954
R 523.4 MOO g
Buku Referensi  Universitas Indonesia Library
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"Program pengklasifikasi gempa volkanik otomatis menggunakan jaringan syaraf tiruan tipe pengelompokan pola adaptif waktu nyata (RTAC) telah dibuat. Pola spektral gempa dipakai sebagai masukan atau ruang cid. Program ini mampu melakukan proses adaptasi did terhadap perubahan kondisi lingkungan. Adaptasi did dilakukan dengan caramendefmisikan kelas pola gempa baru dan bobot pengetahuan jaringan syaraf baru atau ..."
JURFIN 7:21 (2003)
Artikel Jurnal  Universitas Indonesia Library
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