G. Krakatau 1953

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The eruptions of Anak Krakatau from March Until June 1975

Renewed activities started on March 13 with an eruption, soon succeeded by bigger scale eruptions acoompanied by ejection of incandes cent lava fragments. Ash showers fell along the western coast of java adn sometimes on the Southern coast of Sumatera, depanding on the prevailing winds.

Increased Activity Of Mt.Kelud During 1975.

A gradual temperature increase of the crater lake water from normal, i.e. 32° - 33° C, was recorded since the last week of August 1973. The estimated"critical" temperature, i.e. around 40°C, was reach ed on November 5, 1973. Since then the water temperature fluctus ted between 38° C and 40°°c until approximately the end of Janua ry 1974. On January 31 a temperature of 41° C was measured,…

The Eruptive Activities of Mt. Marapi (W-Sumatra) During 1975

In January this volcano showed increasing activity. On the 22nd, 06. 15 loc, time, B crater emitted rather thick white smoke with strong gas pressure until 300 meters high. This phenomenon lasted almost continuosly from morning until evening. A moderate eruption took place at C crater on the 30th, discharging thick turbulent black ash cloud with strong pressure untill 500 meters high.

The Eruptive Activities and Associated Phenomena Of Mt. Merapi (C - Java) Dur…

During the month of January the growth of lava dome continued slowly. From time to time at night glares above the dome could be observed. On January 15 a lava avalanche entered the upper course of R. Batang. In February the growth of lava dome seemed to cease completely.

Kegiatan G.Merapi Bulan Maret 1976

Pada akhir minggu pertama bulan Maret 1967 G. Merapi menunjukan kegiatan berupa turunnya awan awan pijar guguran ke jurusan K. Batang, K. Bebeng, K. Putih yang menggapai jarak maksimum 1k. 6 km.

Kunjungan Kerja Bapak Menteri Pertambangan Ke G.Merapi

Pada hari Rabu, 16 Juni 1976, Bapak Menteri Pertambanagn Prof. Dr. Ir. Moh. Sadeli disertai oleh Direktur Jenderal Pertambangan Umum Prof. Dr. dengan didampingi oleh Kepala Sub Direktorat Volkanologi Djayadi Hadikusumo dan Sekretaris Proyek Penyelidikan/Pengawasan Gunungapi Ir. M. Istijab.

The Rise and Drop Of MT. Kelut Crater Bottom After Paroxysmal Eruptions

From the last two eruptions of Mt.Kelut, i.e. in 1951 and 1966, remarkable changes of the crater bottom were recorded. After the 1951 eruption a lowering of 79 m and after the 1996 eruption up upheaval of 43 m was found to have taken place, as measured at the deepest sections of the crater.

The Eruptive Activities of Mt. Semeru during 1975

n January gas explosions often occurred, ejecting incandescent lava fragments, while eruption clouds rose 1 kilometer above the summit. From Argosuko Obs. (S) reddish glares on the peak of the lava dome could be often observed, while from Gunung Sawur (ESE) and Tawonso ngo (ENE) Observatories they were seen only a few times.

The Eruptive Activities of Mt. Semeru during 1975

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