Lake Toba Essay

Volcanos are deadly, can form on islands or mainland, and can destroy mountains and cities. Volcanos commonly form from holes in the earth containing magma. When pressure builds up in these magma chambers, they explode resulting in magma and rock catapulting out into the air. As these volcanoes repeatedly explode, they leak magma, which runs down the side of the volcano. Eventually, the lava cools and transforms into solid rock, building up the volcano to mountain size. An example of giant volcanic eruptions is the Pompeii disaster in 79AD, when Mount Vesuvius erupted and destroyed all of Pompeii. Another example includes, the 1980 eruption of Mount St. Helens in Washington state, which destroyed the whole mountain. Volcanos

Assess the extent to which primary rather than secondary impacts are the more serious effects arising from volcanic eruptions. (30 marks)

When Krakatoa erupted, scientists were unaware of what was about to happen. Because of Krakatoa’s eruption, we were more prepared for Mount Saint Helens’s explosion. The information from both of these two volcanoes are continually gathered and reviewed for future reference, hoping to prepare us for coming volcanoes. Krakatoa and

This chamber gave birth to the cataclysmic eruption of 760,000 years ago, and is connected to the magma which erupted from the chain of rhyolite domes that stretch up to the northwest. Eruptions crept sequentially along this line, beginning with the Bishop Tuff eruption and most recently displaying activity in the middle of Mono Lake at the island Negit. This most recent volcanism of the Inyo-Mono crater eruptions occurred as late as 1850 A.D (Bailey, et. al., 1989).

A human factor that would cause differences in the hazards posed by volcanoes is settlement, which includes where people chose to live in relation to a volcano. For example, in Indonesia many people settle near Mount Merapi because of the rich and fertile soil favoured for farming. As Indonesia is a poor country many people rely on subsistence farming, therefore are willing to risk everything by settling beside a volcano. Furthermore, in the last eruption in 2010 360,000 people were displaced from their homes, meaning not only did they lose their home but also their livelihood; hundreds also lost their lives. Therefore, the hazards posed could have been minimalised if people chose to settle elsewhere.

the lateral blast, and the large mudflow of this eruption have led to the reassessment

Despite so many thoughtful, new amenities for those living in Lake Nona, Florida — one of the state’s fastest-growing residential areas — much more is yet to come.

the lifespan of the Earth that there were hundreds of thousands eruptions. There are scientists

It is minimal realized that lying underneath one of The United States biggest and most beautiful National Parks - Yellowstone Park - is one of the biggest "super volcanoes" on the planet. Every year, a huge number of guests come to respect the hot springs and fountains of Yellowstone, the Nation's first national park. Few are mindful that these miracles are powered by hotness from a vast repository of incompletely liquid rock (magma), simply a couple of miles underneath their feet. As this magma-which drives one of the world's biggest volcanic frameworks climbs, it pushes up the Earth's hull underneath the Yellowstone Plateau.

The third eruption happened about 640,000 years ago, and spewed 240 cubic miles of material. This third eruption created the third and largest of Yellowstone’s calderas, Yellowstone Caldera, which is 30 by 45 miles in size. The pyroclastic lava flows from this eruption formed the north wall of the caldera and are visible from the south-facing cliffs east of Madison. (Solcomhouse) This third eruption is said to have vaporized an entire mountain range. Smaller eruptions have also helped to shape Today’s Yellowstone, such as one that occurred 174,000 years ago and created what is now the “West Thumb” of Yellowstone Lake. (National Park Service) Many sources say that a catastrophic eruption, such as those that have formed the three calderas at Yellowstone, is unlikely during the next several hundred years, but if one such eruption did occur it would devastate much of the United States and would have the potential to alter the global climate.

The supervolcano in Yellowstone had an earthquake swarm that hit more than 1,200 events. Most park roads in yellowstone are closed for the season because of safety precaution this event and there are currently 1,284 tremors. Together with frequent earthquakes, vigorous hydrothermal activity, and abundant emissions of volcanic gases, relatively slow movements of the ground surface attest to ongoing activity in the vast magmatic-tectonic system beneath Yellowstone National Park. Imperceptible to the naked eye, episodes of uplift, subsidence, and stretching or contraction of the surface are monitored by repeated surveys and networks of sensitive instruments operated by YVO and its partners. Yellowstone is one of the most seismically active areas

The volcano under Yellowstone National Park is one of the biggest volcanoes in the world. In 2 million years the volcano had make 3 eruptions. There is a probability that the volcano erupts 1 time in a 730,000 chance. There is a chance that a smaller eruption can happen. The lava the volcano throws can destroy everything on the way but it goes very slow. The ash cloud the lava throws can get to huge distances and in his way it can do destroying things like; disrupting transportation systems, kill crops, contaminate water supplies, and many other things.

Mount Vesuvius is one of history’s most recognizable Volcanoes, as each of its eruptions have gone down as a significant event in geologic history. The events that transpired during and after these eruptions have shaped the way scientists and people view the sheer power that these volcanoes possessed. This report will take a look at Vesuvius’ most prolific eruption in 79 AD. The geologic setting of the mountain, precursor activity, and the impact the eruption had on the surrounding populations and towns will all be detailed. Along with these details, this report will also look at the further history of Vesuvius’s explosive past by detailing its eruption cycle. Finally, the current state of Vesuvius and the possible danger

A volcano is defined as a vent in the earth's crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals. These natural disasters can cause extreme amounts of damage and have taken the lives of many people. Around the world approximately 35 volcanic eruptions occur each year and have taken the lives of 27,433 people since 1980 (Statistic Brain 2017). According to the National Center for Environmental Information since 1956 there have been ten significant volcanic eruptions in the country of Russia, two of which resulted in a tsunami (NOAA Significant Volcanic Events Database). In this essay I will be discussing the geographic and tectonic location, history of eruptions, history of volcanic impact

The big eruption occurred on April 10, 1815 and it happens to be the largest explosive volcano on record to date. The explosion blasted volcanic ash and plumes 45 kilometers into the atmosphere. Mount Tambora erupted on the island of Sumbawa in the East Indies, in what is now known as Indonesia. This catastrophic geological event occurred on a different continent, yet it affected the continents of North America and Europe. The explosion released large amounts of sulfate gases and also created a large dust cloud 300 miles in length. Locals who lived near the volcano were immediately affected by the explosion resulting in the majority of the locals perishing in the