A study of VOLCANIC ERUPTION In partial fulfilment of the group research project TABLE OF CONTENTS Title Page.................................................................................................................... 1 Table of Contents....................................................................................................... 2 Outline........................................................................................................................ 3 Introduction
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Auckland Geological History * Nature of Auckland’s Volcanoes * Eruption History Volcanoes are an important feature of the Auckland city landscape. In most cases they are emphasized by their different forms such as reserves and parks‚ while in the other locations‚ they have been quarried away to meet the city’s demand for construction material. According to research‚ distributed over a 20km radius are approximately about 49 volcanoes in the Auckland region‚ this area is referred to as the
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Geologists classify volcanoes into three distinct groups: dormant‚ extinct‚ and active. Active volcanoes have erupted recently and are expected to continue to erupt again soon. The Smithsonian Global Volcanism Program defines an active volcano as having erupted within the last 10‚000 years. A volcano finally goes extinct when there’s no lava supply in the magma chamber beneath the volcano. There are approximately 1‚500 active volcanoes in the world today and 75 percent of them are located in the
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Pat I. Volcanoes and Volcanic Hazards (Chapter 4) 1. Between 2001 and 2012‚ 41 volcanic events occurred worldwide. 2. 11 eruptions with VEI>=3 erupted from 2001-2012 3. Some volcanoes that were erupted and associated with tsunamis are: * Name: Stramboli Eruption type: stratovolcano Location: Italy * Name: Soufriefe hills (2003) Eruption type: stratovolcano Location: W indies * Name: Soufriefe hills (2006) Eruption type: stratovolcano
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mixes with either snow or rain on it’s descent down a volcano. A destructive lahar was seen on June 15th‚ 1991 when Mt. Pinatubo erupted and a building was buried by the lahar. In the months that followed over 200 lahars occurred and destroyed road‚ towns‚ crops and bridges. Also‚ the volcanic ash can effect global temperatures and cloud the sky. On June 15th‚ 1991 when Mt. Pinatubo erupted‚ it sent large amounts of ash into the sky. This ash cloud circled the earth and decreased global
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underground spaces. Volcanoes generally acquire shape of a mountain. Volcanoes are usually found at places where tectonic plates get converged or diverged. But there existence at a particular place depends upon many environmental and geological factors. Volcanoes can also occur at a place because of hot spots or mantle plumes. Even hotspot volcanoes are very common at other planets of solar system especially on moons and rock based planets. Features of volcanoes Common features of volcanoes are lava‚
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1.) Mayon Volcano Image Source This is the most picturesque of all the volcanoes in the Philippines - Mayon Volcano‚ an active stratovolcano in the province of Albay. Mayon is the most active volcano in the country‚ having erupted over 47 times in the past 400 years. The first recorded eruption was in 1616. Mayon Volcano is the main landmark of Albay‚ Philippines. This volcano is considered to be the world’s most perfectly formed volcano for its symmetrical cone. 2.) Taal Volcano Image
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Mount Kilauea is the most famous volcano in Hawaii. It resides in the southeast in Mauna Loa. This volcano has one of the biggest craters of all volcanoes‚ consisting of 3‚646 feet deep. It has an 8 mile circumference and is encompassed entirely by an enormous “wall of volcanic rock 200 to 500 ft high” (Mount Kilauea). “Mount Kilauea is a low and flat shield volcano that rises only 1‚247 meters above sea level. Till date‚ the Kilauea volcano is the most active and the most visited volcano in the
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| * Volcanoes are openings in the Earth’s surface. When they are active they can let ash‚ gas and hot magma escape in sometimes violent and spectacular eruptions. * The word volcano originally comes from the name of the Roman god of fire‚ Vulcan. * Volcanoes are usually located where tectonic plates meet. This is especially true for the Pacific Ring of Fire‚ an area around the Pacific Ocean where over 75% of the volcanoes on Earth are found. * While most volcanoes form near tectonic boundaries
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Spanning the Mid-Atlantic Ridge‚ Iceland emerged as a result of the divergent process; the results of which‚ can be measured and observed on land. About the size of the State of Virginia‚ with a population of around 300‚000. Iceland has 30 volcanoes and 13 of them are active. The most fatal volcanic eruption of Iceland’s history was the Skaftáreldar in 1783-84 (fires of Skaftá). Almost a quarter of the population died. The immediate lava flow was not the cause of the deaths. The deaths occurred
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