Formation of Volcanic Depressions - Krakatau and Toba

The gravity survey on Krakatau Islands was first carried out by means of a land gravimeter in 1968 ( Yokoyama and Hadikusumo, 1969) and was supplemented by the present authors in 1982. The gravity points on the islands has reached 40 in number.

On the Relationship Between Tectonic Indications and Volcanism of the 1883 Kr…

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…

Geologic Significance of Granitic Fragment Found from Pumice flow of 1883 Eru…

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…

Galunggung The 1982-1983 Eruption

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…

The Early Activity of G. Galunggung

The eruptions produce lava, fragments (Bombs, Blocks, Lapilli & Anh). This view shows, upper left, the eruptive centre (G.Jadi) from 4km distance. The smoking ashey deposit in the centre has been deposited from a high density burning gas cloud (Nude Ardente) of 25/4/82. The foreground shows a loosely consolidated mud and boulder deposit (lahar).

Topographic Reconnaissance Survey Of Galunggung Cone, March 14, 1983

The topographic reconnaissance survey was carried out by us in March 15, 1983. The survey has utilized the modest available equipment for surveying, e.i. magnetic geologic compass and range finder. Altimeter was also used to determine the elevation. The survey was done in the morning between 7.00 to 8.00 am.

Laporan Peninjauan G. Merapi Bersama Bapak Sekretaris Jenderal Departemen Per…

Pada tanggal 7 Desember 1980 telah diadakan peninjauan kegiatan pengamatan G. Merapi oleh Bapak Sekretaris Jenderal Pertambangan dan Energi. Mendampingi beliau adalah Bapak Kepala Biro Hubungan Luar Negeri, Djayadi Hadikusumo, se-laku bekas pimpinan Sub Direktorat Vulkanologi, dan sebagai ahli gunungapi. Peninjauan kerja ini lebih bersifat in-cognito

Pengamatan Visual Di Sekitar Puncak G. Slamet

Pada bulan Juni 1990 dilakukan pengamatan visual di sekitar kawah G.Slamet, pengamatan ini dimaksudkan untuk mengetahui dan membuktikan apakah ada hubungan antara rekaman gempa dengan kegiatan di sekitar kawah, yaitu dengan melakukan pendakian ke puncak G.Slamet.

Laporan Pendahuluan Pengamatan Visual dan Kegempaan G. Slamet - Jawa Tengah

Jumlah gempa vulkanik dangkal G.Slamet terus meningkat sejak tanggal 17 Januari hingga Maret 1991, kemudian disusul oleh peningkatan jumlah gempa permukaan.

Status of Volcanological Investigation in Indonesia

Edisi

August 1978

ISBN/ISSN

-

Deskripsi Fisik

8 hlm.; 29 cm

Judul Seri

-

No. Panggil

BPT Laporan SUD 1978