Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Prosiding SNAST Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
S. Bronto
Pusat Survei Geologi
Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
GUNUNG API LUMPUR DI DAERAH CENGKLIK DAN SEKITARNYA, KABUPATEN BOYOLALI PROVINSI JAWA TENGAH S. Bronto; P. Asmoro; M. Efendi
PROSIDING SNAST Prosiding SNAST 2016
Publisher : IST AKPRIND Yogyakarta

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

Abstract

Di Kabupaten Boyolali dan sekitarnya terdapat endapan gunung api lumpur, yang tersingkap memanjang ke barat–timur (lk. 20 km) selebar 3–5 km mulai dari Danau Cengklik sampai tepi barat Bengawan Solo. Endapan gunung api lumpur itu berukuran butir lanau–lempung sampai pasir-kerakal andesit basal skoria di Dusun Gununglondo. Di bawah permukaan endapan lumpur itu berupa sisipan atau terobosan di antara perlapisan sedimen, serta mengisi struktur rekahan, membentuk struktur diapir dan bola lumpur, sedangkan yang mampu keluar meninggalkan jejak diatrema dan endapan permukaan. Data ini menggambarkan proses pergerakan lumpur dari dalam ke permukaan bumi, yang dapat disebandingkan dengan erupsi gunung api. Di permukaan endapan lumpur membentuk perlapisan, yang sebagian terlipat lemah dan tersesarkan. Danau Cengklik diduga sebagai bekas kawah gunung api lumpur.Daerah Cengklik dan sekitarnya berkembang pesat karena terdapat bandara internasional Adisumarmo dan sedang dibangun jalan tol Solo-Surabaya. Berhubung sebagian batuan penyusun adalah endapan gunung api lumpur dan banyak mengalami rekahan maka daerah ini dipandang sebagai zona lemah. Potensi bahaya geologi utama yang mengancam adalah deformasi muka tanah di jalan tol karena tidak kuat menahan beban berat bangunan jalan serta kendaraan yang melewatinya. Potensi bahaya lainnya adalah pencemaran air tanah, gempa bumi, reaktivasi gunung api lumpur dan gunung api. Oleh sebab itu penelitian dan mitigasi bahaya geologi tersebut agar dilakukan secara berkesinambungan.
GUNUNG API PURBA DI DAERAH BAKAUHENI - PULAU SANGIANG,SELAT SUNDA, KABUPATEN LAMPUNG SELATAN S. Bronto; P. Asmoro; G. Hartono; S Sulistiyono
Jurnal Geologi dan Sumberdaya Mineral Vol. 22 No. 1 (2012): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v22i1.102

Abstract

Along the Merak - Bakauheni route, Sunda Strait, there are some island composing by Tertiary volcanic rocks. Relating to the plan of construction of Sunda Strait Bridge, several Tertiary and Quaternary volcanic islands at Merak – Bakauheni ferry route are examined as paleovolcanoes in order to evaluate their potential hazards. Methods that used in this study are remote sensing analyses of satellite image and topographic maps, and field geologic investigation. As results, three paleovolcanoes are recognized, namely Harimaubalak, Kandangbalak and Sangiang. To understand the history of their volcanic activities radiometric analyses are required. Those three paleovolcanoes are located in a line having NW – SE direction, considered as a weak zone because the pattern similarity with the active Sumatran fault system. To anticipate the possibilities of opening new vents or reactivated eruptions from the weak zone it is suggested to make further studies on seismicity, tectonic analyses, and the present of sub surface hot sources.Key words : bakauheni, harimaubalak, paleovolcano, sangiang, sunda strait, lampung
ANCAMAN BAHAYA LETUSAN GUNUNG API SKALA BESAR DAN MONOGENESIS DI INDONESIA S. Bronto; R. Setianegara
Jurnal Geologi dan Sumberdaya Mineral Vol. 21 No. 1 (2011): Jurnal Sumber Daya Geologi
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v21i1.133

Abstract

Indonesia has a lot of volcanoes which their potentially hazards threaten people and environment. Mitigation efforts have been conducting to 129 active volcanoes where source locations and types of hazard are relatively well defined, mainly based on historical records. However, volcanic hazards due to larger eruptions, such as caldera explosions and gigantic volcanic debris avalanches, still require basic geological data. This also includes potentially hazard studies on monogenetic volcanoes, that may form a new vent at outside of the present active volcano. This idea is proposed based on facts that there has no a large scale explosion since the Tambora 1815 and Krakatau 1883 eruptions, but large scale tectonic activities have frequently occurred recently causing big tsunamis and earthquakes. Secondly, Sidoarjo mud volcano has been erupting for long time, and volcanic areas are occupied for living and business, intensively.Key words: hazard, volcano, caldera, explosion, avalanche, monogenetic
Co-Authors G. Hartono M. Efendi P. Asmoro R. Setianegara S Sulistiyono