A natural disaster is the effect of a natural hazard (e.g.‚ flood‚ tornado‚ hurricane‚ volcanic eruption‚ earthquake‚ heatwave‚ or landslide). It leads to financial‚ environmental or human losses. The resulting loss depends on the vulnerability of the affected population to resist the hazard‚ also called their resilience. if these disasters continues it would be a great danger for the earth.[1] This understanding is concentrated in the formulation: "disasters occur when hazards meet vulnerability
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A disaster is a natural or man-made (or technological) hazard resulting in an event of substantial extent causing significant physical damage or destruction‚ loss of life‚ or drastic change to the environment. A disaster can be ostensively defined as any tragic event stemming from events such as earthquakes‚ floods‚ catastrophic accidents‚ fires‚ orexplosions. It is a phenomenon that disasters can cause damage to life‚ property and destroy the economic‚ social and cultural life of people. In contemporary
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Describe the characteristics and explain the causes‚ of tsunamis. (8 marks) A Tsunami is a large and potentially destructive sea wave often produced by a submarine earthquake‚ subsidence or an underwater volcanic eruption. They occur when a large volume of water is displaced in the ocean. The characteristics of tsunamis differ slightly from normal sea waves. For one‚ they often have extremely long wave lengths‚ in deep water an initial wavelength can be up to 100km. Their amplitude contrasts with
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thereby warming the upper atmosphere. Historically‚ so-called volcanic winters have caused catastrophic famines (Pfeiffer). For Example‚ Mount Vesuvius‚ a volcano near the Bay of Naples in Italy‚ is hundreds of thousands of years old and has erupted more than 50 times. It’s most famous eruption took place in the year 79 A.D.‚ when the volcano buried the ancient Roman city of Pompeii under a thick carpet of volcanic ash. The dust “poured across the land” like a flood‚ one witness wrote‚ and shrouded
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for many people living close to the really dangerous destructive margin volcanoes‚ eruptions are very infrequent and hundreds of years may elapse between eruptions. Memories are short and people are less inclined to worry about an eruption from a volcano that has been inactive for many generations. - The frequency of eruptions therefore has a profound impact on people’s perception of the volcanic hazard. 5. Proximity to population centres - Whilst some volcanoes are located in remote parts of
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with plate tectonics?The "Ring of Fire" refers to a string of volcanoes‚ which create a ring in the Pacific. The relevance to plate tectonics‚ is that volcanoes are created by two plates coming together and pushing up on each other to create the volcano. The Ring of Fire is evidence of high plate tectonic movement in that particular area and outlines where the plates in that area come together.What events on the Earth’s surface tend occur in this region more frequently than in other regions of the
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Tristan da Cunha was a living island which had erupted many time and forced people to leave their places. The volcano was dormant. QNo3: (i) Erupting – suddenly coming out of something – volcano has started erupting. (ii) Cinders – a piece of material that is left after something such as wood or coal has burned – the ash is occupied from cinders. (iii) Extinct – a volcano that is unlikely to erupt – extinction is a fact of living. (iv) Dormant – something that is not active
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A volcano is an opening‚ or rupture‚ in the surface or crust of the Earth or a planetary mass object‚ which allows hot lava‚ volcanic ash and gases to escape from the magma chamber below the surface. On Earth‚ volcanoes are generally found where tectonic plates are diverging or converging. A mid-oceanic ridge‚ for example the Mid-Atlantic Ridge‚ has examples of volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic
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First of all‚ Chile have many major active fault zones that are the root causes of earthquakes and other natural diaster. The Liquiñe-Ofqui Fault is major geological fault that runs a length of roughly 1000 km in a north-south direction and exhibits current seismicity. It is located in the Chilean Northern Patagonian Andes. It is a dextral intra-arc transform fault. When considered a fault zone‚ the Liquiñe-Ofqui Fault Zone (LOFZ) might include other neighboring faults such as Reigolil-Pirihueico
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A volcano is a rupture on the crust of a planetary mass object‚ such as the Earth‚ which allows hot lava‚ volcanic ash‚ and gases to escape from a magma chamber below the surface. Earth’s volcanoes occur because the planet’s crust is broken into 17 major‚ rigid tectonic plates that float on a hotter‚ softer layer in the Earth’s mantle.[1] Therefore‚ on Earth‚ volcanoes are generally found where tectonic plates are diverging or converging. For example‚ a mid-oceanic ridge‚ such as the Mid-Atlantic
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