On October 12, 1920 the inhabitants of the most high laying kampungs in the vicinity of the Blongkengravine were surprised by hot dustclouds and were killed by the burns. It appeared inmediately, that there was no outburst at all, as the summit slopes of the Merapi were, as far as they were overgrown in August and September, were still green as before (the reports from news papers concerning th…
As far as we can conclude from the volcanial history of the G.Kelut, after each out burst a craterlake was formed (Potrait of the Craterlake among others in 'Geweldige Natuurkrachten' by Vissering in J.v.h. Minjnwezen 1907, Verhandeling Hugo Cool and a.m).
In accordance with Lorie and Prof. Behrens we have determined all collected samples as real basalts. The microscopic praeparates only show difference in relative number and size of the separated crystalls between them, and with respect to the groundmass, also in his capacity of the groundmass itself. As conson with basalt, the olivine exclusively appears as porphyric separation and not in the g…
The purpose of this assignment wa to provvide support to the seissmic program at the Merapi Vulcano Observatory (MVO) of the Vulcanological Survey of Indonesia (VSI). Instrument maintenance and data analysis support were provided for by Bruce Furukawa and Bob Koyanagi between 13 to 24 May; additional assistance in instrument maintenance was provi MVO ed by Furukawa from 25cMay to 9June. Logisti…
The craters of Tangkuban Parabu volcano in West Java are the easiest and most interesting tourism objects to be visited. There is a good winding road passable by cars right up to main crater rim.
G.Guntur dimonitor oleh Direktorat Vulkanologi (DV) secara terus menerus sejak Pos Pengamatan Gunungapi (Pos PGA) Guntur didirikan tahun 1985 di Desa Sirnajaya Kecamatan Tarogong Kabupaten Garut, Jabar.
The idjen volcano has a crater lake containing en 36 million m³ of highly acid, hot water.1) this crater lake forms a peranent menace for the surrounding region. Fruptions of the idjen volcano may throw out this huge volume of poisonous hot water, causing calamities by devastating lahars. This occurred for instance in 1817.
During the following investigation below after the connection between eruptive phenomena and rain fall on the sunsit of the Lamongan, as such an ponsible, I have counted together those outbursts, which are known as such in the literature, although a fow older reports, which indicate increased activity, which is only observed from a distance and is not knows whether ash has been ejected, are per…
Lokon is volcano complex, north Sulawesi, Indonesia. The Eruptive activity at the volcano has been repeated at Tompaluan crater with time interval of 1-8 years in recent 50 years. The last eruption occurred in1991
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…