G. Lewotobi Laki-laki adalah salah satu gunungapi aktif di Indonesia yang terletak di Kecamatan Wulanggitang, Kabupaten Flores Timur. Secara geografis terletak pada posisi 8 32 Lintang Selatan dan 122 46,5 Bujur Timur ( 1929 ) dalam Data Dasar Gunungapi Kemmerling, Indonesia oleh m K. di Kusumadinata (1979). Gunungapi ini berbentuk kerucut dengan kawahnya terbuka ke arah Utara. Tinggi puncaknya…
Explosive eruption of Banda Api Volcano in Central Maluku on Mei 9, 1988 was characterized by throwing out of tephra from 6 eruption holes or craters stretched form North to the South. They were found in formed within 5 hours. This phenomenon is seldom active volcanoes in Indonesia. They have been followed by effusive of lava flow from 3 eruption holes which were located along Northern and Sout…
An eye-witness account on the eruption of the Mountain Krakatau on hundred yeansvaro is found in the form of a poen in two lithographed editions in Arabic script. Both lithographed Singaporean editions are found in the National Library, Jakar- ta. Each of then are called Inilah Syair Lampung Dinaiki Air Laut ("this is a poen about Lampung when it was flooded by the sen-water"s furthen mentioned…
Dutch reactions to the Krakatau eruption, a paper based upon some 19th century publications and upon archival material such as the series "mailreports" originating from the Dutch Ministry of Colonies and some private letters and reports. It presents a description of personal experiences of cye-witnesses, Dutch government regulations in connection with the Krakatau events, charity, and in an imp…
When Krakatau was erupted at 10.02, Sunday morning, 27 August, 1883, 36.417 people were killed by one of the greatest volcanic eruption that ever happened on earth. The victims were not only suffered by the pyroclastics of Krakatau but also swept by tsunami which had drawn 297 Desas (a small administrative u- nit of human settlement). Of the 297 Desas, 165 of them were completely vanished from …
Pumice flow of the 1883 Krakatau eruption occurs It at Small Rakata, Rakata and Sertung Islands, those which roughly correspond to the wall of Krakatau caldera, Indonesia. significantly differs in both mineral and chemical compositions against any other volcanic rock or ejecta of the Krakatau Group, those of which belong to Miyashiro's (1974) tholeiitic series. Meanwhile, lithic fragments of gr…
Krakatau Volcanic Complex located in Sunda Strait, Indonesia, erupted catastrophically in 1883. The eruption was preceeded by the increasing number of seismicity during the last 7 years prior to the eruption. The initial stage of the eruption was indicated by the ash outburst of Perbu- atan volcano in May and followed by another activity in the area south of Danan Volcano in July, 1883. Ashes i…
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.
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.
When we venture a calculation of the amount of the ejected ash and punice, then it goes without saying, that we can only estimate. The statements concerning the amount of the fallen-down ash, are mostly inaccurate and incomplete. Moreover, when we are willing to fix the correct amount of ash, we ought to know the specific gravity and to take into account the thickness of the locally fallen ash …