Volcanic Hazards Quotes

Other than the external threat of asteroid and comet strikes (a common hazard throughout the solar system), all Earth’s natural hazards go hand in hand with its habitability. Indeed, Earth seems to be constructed almost perfectly to create calamities, with an outer shell thick enough to be rigid but thin enough to be breakable. Earthquakes, tsunamis, and extreme volcanic transformations are the price we pay for the life-sustaining gift of plate tectonics. Likewise, Earth’s atmosphere is primed to do damage by just the same qualities that make it so nurturing. Sun-animated, water-saturated, and seasonally shifting, our dynamic atmosphere maintains our comfortable climate. Its motions feed and water us, but can also swirl into violent storms that flood villages and splinter cities. Tornadoes, floods, blizzards, and climate shifts are collateral damage from life-enabling flows of energy, water, and chemical elements. All are also symptoms of Earth’s destructive/creative energy flows.*

He and others have interpreted contemporary accounts in terms of a succession of impacts, too small to have a global impact but quite sufficient to cause mayhem in the ancient world, largely through generating destructive atmospheric shock waves, earthquakes, tsunamis, and wildfires. Many urban centres in Europe, Africa, and Asia appear to have collapsed almost simultaneously around 2350 BC, and records abound of flood, fire, quake, and general chaos. These sometimes fanciful accounts are, of course, open to alternative interpretation, and hard evidence for bombardment from space around this time remains elusive. Having said this, seven impact craters in Australia, Estonia, and Argentina have been allocated ages of 4,000–5,000 years and the search goes on for others. Even more difficult to defend are propositions by some that the collapse of the Roman Empire and the onset of the Dark Ages may somehow have been triggered by increased numbers of impacts when the Earth last passed through the dense part of the Taurid Complex between 400 and 600 AD. Hard evidence for these is weak and periods of deteriorated climate attributed to impacts around this time can equally well be explained by large volcanic explosions. In recent years there has, in fact, been a worrying tendency amongst archaeologists, anthropologists, and historians to attempt to explain every historical event in terms of a natural catastrophe of some sort –whether asteroid impact, volcanic eruption, or earthquake –many on the basis of the flimsiest of evidence. As the aim of this volume is to shed light on how natural catastrophes can affect us all, I would be foolish to argue that past civilizations have not suffered many times at the hands of nature. Attributing everything from the English Civil War and the French Revolution to the fall of Rome and the westward march of Genghis Khan to natural disasters only serves, however, to devalue the potentially cataclysmic effects of natural hazards and to trivialize the role of nature in shaping the course