The Submarine Flank Eruptions of Mt. Ili Werung in 1973 - 1974

During the months of June until August 1974 three volcanic peaks emerged above sea level, after the occurrence of submarine activities which started since the first week of December 1973. These small volcanic islets, located about 700 meters southeast off the coast of Lomblen island, was given the name of "Hobal volcano" by local inhabitants. Investigations carried out on May 9, 1976, discovere…

A Renewed Activity of ''Hobal Volcano'' (Mt. IlI Werung) in 1976 (with one an…

Since the recorded activities in the beginning of December 1973 which lasted approximately one year, not a single indication con cerning activity of "Hobal Volcano" (or around the location where the "volcano" has disappeared below sea surface, as it was stated on December 31, 1974) was observed during the year 1975. On March 23, 1976, a radiogram sent by the local administrator to Bandung Headq…

The Eruption of Mt. Sirung from May untill June 1975

The eruptive activities of Mt. Sirung during the months of May until June are summarized. May 12 An ash eruption took place at 06.00 loc. time; ash showers reached distances of 25 kilometers. The locality of the eruption center was assumed south of the crater lake or east of B crater.

The Eruptions Of Mt. Ili Boleng in March and June 1975

On March 21 and 31 eruptions took place, discharging ash clouds about 1 kilometer high, which then drifted northeast until 5 kilome ters distant. Eruption products composed of ash, sand and lapilli mixed with sul-fur were deposited until a thickness of 2 centimeters above the villages of Lamalota, about 1 kilometer N.NW, and Dokin, about 2 kilo meters SE of the crater.

Bulletin of the Volcanological Survey of Indonesia for the Period 1950 - 1957

Edisi

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ISBN/ISSN

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Deskripsi Fisik

122 hlm. : ilus. ; 24 cm.

Judul Seri

Bulletin of the Volcanological Survey of Indonesia

No. Panggil

551.21 VOL No. 100

G. Krakatau 1953

Berisikan gambar - gambar mengenai aktivitas krakatau

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.