Still a single word on the built up of the volcano as appears from the exposures out side the crater. In all ravines visited by the author, this are the lahar Badak, the lahar Siwalan, the Kali Ijir and the lahar ligobo, the number of lava out flows was not to be called a few. On portrait 17 we see more of such andesite break-through exposed in the ravine of the lahar Ngobo. Remarkable is the f…
Walaupun Gunung Kunyit digolongkan dalam tipe B, tetapi Kasi Pemetaan Topografi menugaskan saya untuk melakukan pengukuran situasi puncak/kawah Gunung Kunyit Kabupaten Sungai Penuh Provinsi Jambi., karena peta yang ada di Perpustakaan iala peta tahun 1925, diperkirakan sekarang telah banyak mengalami perubahan - perubahan.
The active Colo volcano is situated on the island of Una-Una in the Gulf of Gorontalo (0°10'S and 121°35'E). This isolated volcano is located in a peculiar tectonic position, ca 70 km south of the extinct northern volcanic arm of Sulawesi and ca 40 km north of the volcanic extinct Togian Islands. There are two known historic eruptions: 1-2 May 1898 and 23 July 1983. During the latest eruption…
As far as we can conclude from the volcanical history of the G.Kelut, after each out burst a craterlake was formed (Portrait of the Craterlake anong others in 'Geweldige Natuurkrachten' by Vissering in J.v.h. Mijnwezen 1907, Verhandeling Hugo Cool and a.m.). As most of the strate volcanoes has no craterlake there must be extraordinary conditions present, when at such volcano body craterlakes…
Of more importance than the flank eruptions are the excentric eruptions, which are fed from a much more deeper lavaniveau than the first mentioned, whereas the breakthrough mostly takes place in the area of the volcano foot. Also excentric eruptions may entirely independently become active fron the main crater, which at flankeruptions is not likely possible. Also the phenomena, with which excen…
Pengamatan Gunung Anak Krakatau yang dilakukan secara tetap dari Pos Pengamatan di Pasauran hanya pengamatan visual. Yang diamati adalah kegiatan di Kawah berupa kegiatan solfatara dan fumarola dan letusan. Sedangkan pemeriksaan kawah dan pengamatan seismik dilakukan secara berkala.
Gunung Mahawu yang memiliki puncak lk. 1311 meter di atas permukaan laut, termasuk kedalam wilayah kabupaten Minahasa, Sulawesi Utara. Posisi geografisnya terletak pada 1° 21' 30" LU dan 124° 51' 30' BT. Catatan sejarah letusan G. Mahawu, menurut Data Dasar Gunung api Indonesia, sebelum tahun. 1789 tercatat tiga kali letusan dari kawah pusat. Tidak ada keterangan lebih lanjut mengenai kegiata…
During 1922 the G. Lamongan was often visited by the volcano guideship survey namely in April, June and August.
Gunung Awu dan Gunung Karangetang merupakan gunung api aktif yang keduanya terletak secara terpisah di pulau-pulau kecil pada jalur gunung api Sangir-Talaud, di Sulawesi Utara
Pada Oktober tahun 1975, S. Hamidi B.Sc ( sekarang Kepala Seksi Penanggulangan Bahaya). A.R. Sumailani dan Sadjiman ( karyawan Subdit Laboratotium G. Api) telah mengadakan penyelidikan ke Gunung Tutung ( G. Peuet Sague). Tim ini mengadakan penyelidikan dan pembuatan peta bagan situasi puncak Gunung Peuet Sague. Pengukuran topografi puncak dilaksanakan dari tanggal 23 September sd 16 November 19…