Volcanology is ained at the scientific study of phonomona, which strictly speaking, only refers to manifestations of surface cruptions of molton rock or magna and their related gasos, with the structuros, deposits, and other offects produced thoroby. Until now physiographio descriptions of the Indonesian volcanoos, their eruptions and or porio- dic increased activities, the geomorphological lan…
Krakatau volcano located in Sunda Strait between Suamtra and Jawa is worldwide known because of the destructive Plinian eruption that took place in 1813. The erupstion effect was felt all over was felt all over the world; seawaves travelled as far as 22,000 km reaching the south american pasific coast and indian coast of africa while volcanic ashes were ejected up to the height of 90 km that tr…
Merapi volcano is one of the most active volcanoes of Indonesia. The activity was dated back to the year 1006, when the volcano erupted violently destroying the Kingdom of Mataram and buried the Borobudur temple.
This report is a preliminary account of Mt Galunggung eruption that began in April 1982 and continued intermittently until early January 1983. After almost 63 years of quiesence, Mt Galunggung, located about 350 km souteasth of Jakarta, suddenly erupted at dawn of April 6, 1982. The explosion, accompanied by bright glows and lightning, awakened some 200,000 people living close to the volcano. A…
Setelah menerima pemberitahuan dari Pemerintah Daerah Tingkat II Probolinggo pada tanggal 13 Juni 1980, tentang peningkatan kegiatan G. Bromo, Jawa Timur, Direktorat Vulkanologi mengirim suatu tim terdiri dari 2 orang untuk mengamati dari dekat keadaan G. Bromo. Tim yang diberangkatkan dari Yogyakarta (petugas sedang berada di Yogyakarta untuk melakukan penyelidikan rutin G.Merapi) berada di Br…
An invitation issued by Unesco under the Volcanologist Exchange Programme has given opportunity to the authors to visit Mayon Volcano, South Luzon, The Philippines, which was reported to have shown an increasing activity early May this year. The first increasing volcanic phenomenon was observed on May 3, and harmonic tremors were recorded the following days. The precaution measures have then be…
Pada tanggal 19 - 20 Januari 1990 bersama Sudrajat pendakian G. Slamet dilakukan dari Kampung Sawangan Kecamatan Bumijaya. Tujuan pendakian adalah dalam rangka pemeriksaan kawah/dasar kawah dan pengambilan gambar di sekitar kawah dan puncak.
Laporan pengamatan kawah G.Slamet ini disusun berdasarkan laporan lapangan pendakian oleh Sukedi dan Sudradjat. Pendakian dilakukan pada tanggal 27 Februari - 1 Maret 1991.
In April 1960 a series of strong tectonic earthquakes took place in the vicinity of the Colo volcano on the island of Una-Una situated in the Gulf of Gorontalo, Central Sulawesi. Unlike that of 1898 these earthquakes were not followed by an eruption of the Colo volcano but only caused a slight incresase in temperature of the solfatara fields. Strong earthquakes were again felt in August 1982, g…
Memang gunung api Colo yang terletak di pulau Una-una di Teluk Tomini atau Teluk Gorontalo, bukan suatu gunung api yang menyeramkan. Tingginya hanya 500 meter dari permukaan laut, puncaknya tidak berbentuk kerucut dan gunung api ini telah disayat secara intensif oleh beberapa lembah lahar curam, yang bermuara di puncak G. Colo. Rakyat setempat memberikan nama Colo atau geretan yang berarti api …