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…
Between the island Great Sangi in the N and Siau in the S from sea a great amount of small island and cliffs emerge, known under the name karakitang islands
Volcanoes are unquestionably one of the most spectacular and awe inspiring features of the physical world, and they have provided humanity with the most exquisite pleasure as well as the most devastating misfortune. The loftiest mountains on the face of the earth, affording majestic scenery enjoyed by millions, are volcanic cones.