Geology of the Hawaiian Island Chain The chain of Hawaiian Islands formed as the Pacific plate moved over a hot spot in the mantle of the Earth. The plate slowly moves northwestward at a rate of about 32 miles per million years. The northwestern islands are older and generally smaller due to prolonged exposure and erosion. Plate tectonics, types of volcanoes, hot spots, and sea mounts, are all an important part of the geology of the hawaiian island chain.
When Mount Vesuvius erupted in 79 A.D it caused a lot of destruction throughout the region in Italy. In 62 A.D, there was a fatal earthquake that damaged towns, cities, this earthquake set Mount Vesuvius in 79 AD which the volcano erupted strongly with streams of hot gases, molten rock that hit Herculaneum. The city quickly was filled up with ash, pumice, molten rock, hot gases from the volcano. When Pompeii was hit not a while after ash, pumice, molten rock fell on top of the town. Some died in their homes or shops from the buildings collapsing while others died from the poisonous fumes that were ejected out of the volcano.
Day of the Disaster by Lauren Tarshis ' is mostly about a town called Pompeii and the volcano called Mount Vesuvius, when the town of Pompeii was as normal as can be "BOOM, BOOM" then it happened one of the most deadliest volcano eruption in the world. Here is what the text stated "The pumice falls with painful force. It is mixed with hot ash, which clogs your nose and throat. Many people are fleeing. " I choose this one because this explains how deadly this volcano was and is and what it could do if this happened again. "
The eruption of Mt. Vesuvius and the subsequent burial of Pompeii is one of the greatest disasters known to man. The volcano erupted in 79 BC after a major earthquake in 62 BC woke up the mountain. The towns of Pompeii, Herculaneum, Boscoreale, and Oplontis were buried early morning on August 25, 79. Oplontis and Boscoreale were the first towns to be destroyed; they were buried in the first weak lava flows and explosions. After the first and second surges of lava, Herculaneum was cleanly buried.
The highest peak of the crater is southwestern due to the winds that were blowing ash in this direction during the eruption. Since the eruption, the slopes of the crater have been eroded and weathered by rain, wind and the beating of the sea. There is a coral reef that now protects the seaward slopes of the crater. (Diamond Head Crater, n.d.)
One example being, fracking, which is the process of injecting liquid at high pressure into subterranean rocks, boreholes, etc., so as to force open existing fissures and extract oil or gas. When contractors frack they create manmade Earthquakes. At 5:12 AM on April 18, 1906, the Great 1906 San Francisco Earthquake occurred. The rupture was about two hundred and ninety six miles.
Convection Currents The Alaskan Way Viaduct will collapse if an earthquake happens. Tectonic plates rubbing together causes an earthquake. What causes them to rub together? An earthquake happens through a sequence of cause and effect. Altogether, temperature, density, and convection currents work together to cause an earthquake.
Mount Vesuvius Disaster On August 24th, 79 AD, the city of Pompeii was shocked to discover that the mountain that lived near them was trying to kill them all! The residents of Pompeii woke up on a nice sunny day to see the mountain – Mount Vesuvius – had big clouds of smoke coming out of the top of it. Of course, confusion spread to everyone’s mind as they wondered what it could be. One of the biggest theories at the time was that the gods where giving them a sign.
In 2004, a devastating event occurred that would change the face of natural disasters forever. Early in the morning on December twenty-sixth, 2004, the Indian Ocean earthquake and tsunami began. While the event itself was not long in duration, the effects that it had on society and the Earth will last a lifetime. The Indian Ocean earthquake and tsunami, more commonly known as the Sumatran Earthquake or The Boxing Day Tsunami, caused catastrophic effects in the area, but also around the globe.
Nevado del Ruiz Case Study The Eruption and its Impacts What happened? On November 13th, 1985, the Nevado del Ruiz volcano erupted triggering destructive lahars, which caused approximately 23 000 human deaths, 4500 were injured and, following the catastrophe, 8000 became homeless .
This volcanism has included such notable eruptions as Mount Mazama (Crater Lake) about 7,500 years ago, Mount Meager about 2,350 years ago, and Mount St. Helens in 1980. Major cities affected by a disturbance in this subduction zone would include Vancouver and Victoria, British Columbia; Seattle, Washington; and Portland, Oregon. The two tectonic plates involved in the subduction process at the convergent fault line are the Juan de Fuca plate and the North American plate. The Juan De Fuca plate being the denser oceanic plate is being subducted under the continental North American plate. Although the fault line is on the coast of the Northern American plate tectonic activity is also heavily present inland, evidence of this is the cascade volcanic arc formed by the tectonic movements at the fault
It’s normally formed from a major eruption then the collapse of the mouth of the volcano. Yes, Axial Seamounts does have a caldera. The caldera is 3 km, which is 1.8 miles. One cool interesting fact I learned, a signal of an Axial Seamount eruption is that there are thousands of earthquakes within minutes. The other one that I thought was cool was, that researchers want to see how Axial Seamounts can affect humans.
Boxing Day Tsunami Tsunami is defined as a high long wave caused by an earthquake, volcano or a meteor and waves that spot grow larger and larger. How it builds up? Before a tsunami the earthquake happens and the waves grow up to one hundred feet tall. During the tsunami, the waves hit shallow waters and destroy anything in its way. After a tsunami, a large wall of water follows behind it and takes many objects with it back to the ocean.
A tsunami is a series of great sea waves caused by an underwater earthquake, landslide or volcanic eruption. A tsunami is a series of many waves known as wave trains. A tsunami can also be generated by a giant meteor. Most tsunamis are known to be formed by underwater earthquakes.
On May 18th, 1980, Mount Saint Helen, a volcano in Washington erupted majorly. The eruption is the most studied volcano eruption. Mt. St. Helen was known as one of the most prestige volcanoes in the Cascade Range before its eruption on May 18, 1980. The eruption made a big blast that destroyed the northern part of the volcano, crushing millions of the trees below the mountain. The zone was further described as a big debris avalanche.