Volcanology is ained at the scientific study of phonomona, which strictly speaking, only refers to manifestations of surface cruptions of molton rock or magna and their related gasos, with the structuros, deposits, and other offects produced thoroby. Until now physiographio descriptions of the Indonesian volcanoos, their eruptions and or porio- dic increased activities, the geomorphological lan…
Krakatau volcano located in Sunda Strait between Suamtra and Jawa is worldwide known because of the destructive Plinian eruption that took place in 1813. The erupstion effect was felt all over was felt all over the world; seawaves travelled as far as 22,000 km reaching the south american pasific coast and indian coast of africa while volcanic ashes were ejected up to the height of 90 km that tr…
In April 1960 a series of strong tectonic earthquakes took place in the vicinity of the Colo volcano on the island of Una-Una situated in the Gulf of Gorontalo, Central Sulawesi. Unlike that of 1898 these earthquakes were not followed by an eruption of the Colo volcano but only caused a slight incresase in temperature of the solfatara fields. Strong earthquakes were again felt in August 1982, g…
Memang gunung api Colo yang terletak di pulau Una-una di Teluk Tomini atau Teluk Gorontalo, bukan suatu gunung api yang menyeramkan. Tingginya hanya 500 meter dari permukaan laut, puncaknya tidak berbentuk kerucut dan gunung api ini telah disayat secara intensif oleh beberapa lembah lahar curam, yang bermuara di puncak G. Colo. Rakyat setempat memberikan nama Colo atau geretan yang berarti api …