Naar aalending van een verzoek van den Resident van Palembang werd door mij van 12 tot 18 Februari 1940 een onder zoeknaar den toestand van den Dempo en de gevolgen van de jongste uitbarstingen, vooral van die van 30 Januari 1940, ingesteld.
Krakatau's eruptive activity reawakened as sub marine on December 29 1927, and after several brief or longer cyclus of erosion and denudation the volcano finally rose above sea level definetly between Augst 11 and September 10. 1930 as Anak Krakatau IV.
Krakatau was studied from September 10 - 12. The 1883 eruption produced a large non - walded ignimbrite deposit (ash - flow) which covers large areas of Rakata, Sertung and Rakata Islands. We landed on all three islands at accesible points and axamined coastal exposures of the 1883 deposit.
Renewed activities started on March 13 with an eruption, soon succeeded by bigger scale eruptions acoompanied by ejection of incandes cent lava fragments. Ash showers fell along the western coast of java adn sometimes on the Southern coast of Sumatera, depanding on the prevailing winds.
This report outlines the preliminary account of Mt. Galunggung eruption that took place beginning of April 1982 and continued for several months. After almost 64 years of quiesence Mt Galunggung, located some 350 km souhteast of Jakarta, suddenly erupted at dawn of April 5, 1982. The explosion, heralded by bright glows and lightnings, awakened some 200,000 people living close to the volca-no. A…
Analisa geokimia dan analisa petrografi batuan volkanik gunungapi Galunggung memperlihatkan adanya variasi dari pada senyawa Si02, K20, dan Na20. Seri kekerabatan batuan volkanik adalah arc-tholeiitic suite dengan jenis magmanya andesit basaltic dan basalt. Kedalaman magma antara 137 - 160 km pada zona Benioff dengan temperatur 1250'C - 1350'C.
Erupsi G.Galunggung di wilayah Priangan Timur, Jawa Barat yang berlangsung selama lk. sepuluh bulan sejak 5 April 1982 hingga dengan minggu pertama Januari 1983 terjadi setelah tahun pembentukan kubah lava 1918 (G.Jadi) atau lk. 88 tahun setelah letusan hebat terakhir pada 1894 yang melampaui waktu kritis rata - rata.
This report presents the results of a reconnaissance of the character. relative age, and distribution of products from eruptions in the Dieng Mountains region, central Java. These results are based on an 11-day field reconnaissance of the Dieng Mountains and about 2 1/2 weeks of preliminary preparation, review of pertinent literature, and report writing in Bandung.
n January gas explosions often occurred, ejecting incandescent lava fragments, while eruption clouds rose 1 kilometer above the summit. From Argosuko Obs. (S) reddish glares on the peak of the lava dome could be often observed, while from Gunung Sawur (ESE) and Tawonso ngo (ENE) Observatories they were seen only a few times.
The summit of G. Merapi is formed by a lava-plug; a cratershaped decline, such as the most volcanoes possess, is not present. However it is known,-thanks to the many interest, with which the G. Herapi in the pant century obtained, that the volcano in another stage of eruptive activity certainly owed such a cratershaped decline.