A Renewed Activity of ''Hobal Volcano'' (Mt. Ile 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 Submarine Flank Eruption of Mt. Ili Werung

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…

The Eruption of Mt. Sirung

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

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.

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.

The Eruptions of Mt. Lokon During 1975

During the months of January and February the activities which start ed since March 1974 still continued. A minor ash eruptions took place once. Thick bluish white ash column was discharged with moderated pressure until some 500 meters above the orator

The Eruptions of Mt. Api Siau During 1975

In January ash eruptions accompanied by strong detanations took place 3x, viz. on the 15th, 21.00 loc time on the 17th 06.05 loc time and on the 21st 17.55 loc time. Rumblings were often heard, sometimes lasting for several hours. Glares could be observed at night. The mechanical "Spindler & Hoyer" observatory seismograph with horizontal component recorded 30 earthquakes incl 16 felt.

Volcanic Activities in Indonesia During 1974

Edisi

May 1975

ISBN/ISSN

-

Deskripsi Fisik

17 hlm.; 29,5 cm

Judul Seri

-

No. Panggil

BPT Laporan HAD 1974

Volcanic Activities in Indonesia during 1973

Edisi

Mei 1975

ISBN/ISSN

-

Deskripsi Fisik

14 hlm.; 30 cm

Judul Seri

-

No. Panggil

BPT Laporan HAD 1975