Tiap letusan gunungapi tipe Plinian merupakan suatu cobaan alamiah yang dapat merubah mukabumi serta kehidupan flora dan fauna secara luas. Ciri letusan tersebut tidak ada bandinginnya dengan eksperimen yang pernah dilakukan manusia, demikian diucapkan Ernst (1907), seorang ahli botani Swiss setelah kunjungannya di Kepulauan Krakatau tahun 1906 bersama - sama Backer (Bogor).
Selama beberapa bulan, dalam majalah ini (1936,*) IV.h.l) saya dari kawah G. Slamet, telah membahas perubahan-perubahan letak G.Lamongan dan G.Semeru dan menunjukkan bahaya-bahaya yang akan mengancam daerah-daerah sekitarnya. Di dekat semua gunung-gunung ini telah tertimbun ratusan meter hasil-hasil erupsi, suatu pe munculan, yang segera bisa diamati didekat kebanyakan gunung- gunung berapi. Di…
I came up to Tokyo by flight on January 18th (and returned to Kagoshima on 20 th) to talk with staffs of the JSPS ( Japan Society for the Promorion of Science). We talked about the successful Krakatau Volcano Research and its related works which were made jointly together with Indonesian excellent co - workers.
Setelah mengetahui tentang kedasyatan letusan Krakatau dalam tahun 1883 dan akibat - akibat yang ditimbulkannya secara agak mendetil, sampailah kita sekarang ke sebab - sebab terjadinya letusan gunung berapi itu.
A program to carry out a series of integrated research activities on Mount Krakatau and the surrounding area has been drawn up and circulated to relevant parties by the Indonesian is planned to span for two years, beginning in Augst 1981.
Sesuai rencana kerja proyek pemetaan geologi Gunungapi Sub-Direktorat Pemetaan Gunungapi Direktorat Vulkanologi pada PELITA III geologi gunungapi Krakatau. Pekerjaan lapangan berlangsung 40 hari dari 13 Maret sampai dengan 21 April 1982.
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).
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.
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.
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.