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…
After eigthy five years of inactivity, the Colo Volcano (Indonesia, 0.175, 120.61E) experienced a series of violent eruptions which lasted from july 8 to August 22.. 1983. These eruptions destroyed most of the settlements, vegetation and animal life on the small island of Una-Una on which the volcano is located. The inhabitants were fortunately evacuated before the most destructive events took …
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
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.
This book will interest not only geologists and students of volcanoes, but all those also who have a lively interest in landforms as natural phenomena. Dr. Cotton’s emphasis is on the study of volcanoes as landscape forms, beginning with the mechanism of volcanism – the types of eruption and the various kinds of volcanoes and proceeding with a discussion of the several types of landscape wh…
Viewing an erupting volcano is a memorable experience, one that has inspired fear, superstition, worship, curiosity and fascination throughout the history of mankind. In modern times, volcanic phenomena have attracted intense scientific interest, because they provide the key to understanding processes that have created and shaped more than 80 percent of the Earth’s surface.
The spectacle of explosive volcanic activity has always struck us with a sense of fascination and awe. Stories of the last days of Pompeii and Herculaneum, the massive eruption of Krakatau, and more recently the destruction wrought by Mount St. Helens in Washington and El Chinchon in Mexico have captured the public imagination. This atlas examines the aftermath of such events by looking at the …
On May 18, 1980 after 2 months of local earthquakes and steam eruptions, picturesque Mount St. Helens, a Cascade Range volcano is southwestern Washington, suddenly began a major explosive eruption directed first northward and then upward. The lateral blast, which lasted only the first few minutes of a 9 hour continuous eruption, devastated more than 150 square miles of forest and recreation are…
Volcanic activity is one of the main agents responsible for shaping the landscape, environment and climate of planets and moons. On Earth, volcanic eruption can also have catastrophic consequences for human society.