Sehubungan dengan akan diadakannya simposium peringatan satu abad meletusnya gunung Krakatau, dan sesuat dengan rencana kerja Bagian Froyok Pemetaan Topografi Gunungapă tahun 1983/1984, maka diadakan pangukuran situasi gunung Anak Krakatau yang baru. Karena pota hasil pengukuran yang lama (1981) telah mengaland perubahan akibat adanya letusan pada tahun 1982. saya ditugaskan Kasi Pemetaan T…
Menanggapi berita Harian Sinar Indonesia Baru terbitan tanggal 22 Oktober 1983 dan berita pener- bitan tanggal 26 Oktober 1983 mengenai terjadinya gempabumi di Berastagi dan desa Rajaberneh di Kabupa ten Karo, maka pimpinan Kanwil Departemen Pertambangan Dan Energi Propinsi Sumatera Utara segera mem berangkatkan penulis ke lapangan untuk mengadakan pe meriksaan sepenuhnya keadaan gunungapi ters…
It is, indeed, both a pleasure and a privilege for me to welcome you on behalf of the Indonesian Governement and of the Indonesian Institute of Sciences (LIPI) at the Opening Ceremony of the Symposium on the 100th Vear Development of Mt. Krakatau and its Surroundings. LIPI is most happy to have you all with us today, since by your very presence you have also honoured us at LIPI's sixteenth anni…
The post-meeting trips arranged for a guided by VSI sci- entists were a great success, and at the outset I'd like to convey the thanks from my colleagues, and from myself, for extending this considerable hospitality and courtesy to us. Each and every one of the participants: Fiske, Simkin, Stoiber, Williams, Glicken, Yokoyama, Punongbayan the Banks, Rosengren, and of course Mary Ann and I, were…
Krakatau catastrophic eruption in 1883 produced a large amount of pumice in the form of pyroclastic flow or fall. At present, they are on Rakata, Sertung, Panjang, and Sebesi islands. The pumice as the major constituent, often accompanied by obsidian is petrographically and chemically analysed. Most pumice was white with some pink and blackish grey; in various from ash, sand lapilli to block. M…
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.
In Anak Krakatau's fifty years of existence an evolutionary developmental growth of its geomorphology and a gradually changing silica-content in the effusive throughout its five decades of eruptive activity could be recognied (De Neve, 1980, 1981).
In the last days of Augst 1883 on of the world's largest cataclysmic eruptions took place : the volacanic complex of Krakatoa, in Sunda Strait between java and Sumatra was shattered ash as to produce striking atmospheric effects over the whole world for several years to come. To consequent tsunami devastated adjacent coasts.
Pada tanggal 15 -13- 1981, kami ditugaskan oleh Kepala Seksi Pemetaan Topografi untuk melakukan pengukuran topografi terkahir yang ada ukuran Sdr. Samud W. Tahun 1977 di perkirakan sudah banyak perobohannya, setelah antara tahun 1977 sampai dengan tahun 1981 sering terjadi kegiatan.
From the respeots of volcanostratigraphy, geology and petrography, major efforts were payed for field inspection of lavas, pyroclastics and pyroclastio flow deposit and for sampling for petrological and geochemical laboratory works.