High risk natural disaster areas
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Transcript of High risk natural disaster areas
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High risk natural disaster areas
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Outline • Introduction • Ring of fire • Statistics
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IntroductionDisasters can happen anywhere and at any time. But some places experience more than their fair share of floods, tornadoes, hurricanes, winter storms and severe weather
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Ring of fire The Ring of Fire is an area where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a 40,000 km (25,000 mi) horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements. It has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes.It is sometimes called the circum-Pacific belt or the circum-Pacific seismic belt.
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Ring of fire The Ring of Fire is a string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean.
The Ring of Fire is not quite a circular ring. Its shaped more like a 40,000-kilometer (25,000-mile) horseshoe. A string of 452 volcanoes stretches from the southern tip of South America, up along the coast of North America, across the Bering Strait, down through Japan, and into New Zealand.
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Ring of fire
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StatisticsAbout 90%[2] of the world's earthquakes and 81%[3] of the world's largest earthquakes occur along the Ring of Fire. The next most seismically active region (5–6% of earthquakes and 17% of the world's largest earthquakes) is the Alpide belt, which extends from Java to Sumatra through the Himalayas, the Mediterranean, and out into the Atlantic. The Mid-Atlantic Ridge is the third most prominent earthquake belt