This earthquake caused 60 deaths, 9,000 people injured. Causing the San Fernando Valley a total pile of destruction (TheAtlantic.com). What was actually the main cause of the Northridge earthquake? Why did the Northridge earthquake caused so many destruction? The earthquake happened because of the movement from the San Andreas Fault (u-s-history.com) .This little movement from the tectonic caused big things such as earthquake, but what exactly is San Andreas Fault?
Iceland was created by a hotspot, much like Hawaii, and due to a combination of hot spot activity and plate tectonics, Iceland has undergone many geologically processes. The mantle plume itself is traveling toward the northwest part of the island, creating amazing geological features as it goes. Some of Iceland’s unique features include volcanoes, geysers, lava fields, rift valleys, hot springs, and subglacial volcanoes. Currently Iceland has over 20 active volcanoes. The Mid-Atlantic Ridge and the mantle plume create earthquakes and new volcanoes.
It was the most powerful quake ever recorded. Earthquakes will occur on most plate boundaries, other than constructive as this is where new land is formed by magma moving into the gap on the plate boundaries (Alvarez, et al., 2014). Mostly happen on subductive and conservative plate boundaries examples of which are East Asia, when these boundaries crush against each other and create pressure. Eventually, the pressure will build up to a point where it overcomes the friction holding two sections of rock together. The sections will slip, relieving the pressure and creating an earthquake as the energy that was held in the two sections is transferred into seismic waves, also known as an earthquake (Alvarez, et al., 2014).
An earthquake is when the Earth’s surface shakes in response to the sudden release of energy in its lithosphere which then creates seismic waves . There were two earthquakes that occurred before the tsunami; this is known as a ‘triggered duplet” . The first earthquake was a magnitude 8.1, the second an 8.0. The first triggered
Due to stress they shift and cause the earthquake. that zone is more subject to seismic disasters. Tectonic, volcanic, collapse and explosion, are the four different types of earthquakes. A tectonic earthquake is one that occurs when the earth 's crust breaks due to geological forces on rocks and adjoining plates that cause physical and chemical changes. A volcanic earthquake is when a volcano erupts and shakes the plates.
“This quake was so big”(Los Angeles Times 2). “The most important conclusion is not to panic”(Scientific American 2). In July 1958, Lituya Bay, Alaska was hit by three Geo processes. These were a massive earthquake, a harrowing rockslide, and a devastating tsunami. In 1980, Mt.
If a person lived on the sun in the center of our solar systems, and then traveled to a neutron star and lived there for one year, when the person went back to the sun he left, hundreds of years would have passed. The reason time stops at the black hole’s event horizon is because there is a complete tear in the fabric of space-time. The tear is caused be the extreme gravitational pull. This is called singularity. Singularity is defined as a point where anything takes an infinite value.
Helens or Louwella-Clough is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It last erupted on July 10, 2008, but is most famous for its eruption in 1980 which killed more than 57 people and killed thousand of animals. It cause about a billion US dollars to repair. Mount St. Helens is famous for its 1980 eruption. It is one of the world’s most active stratovolcanoes.
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. The Indian Ocean earthquake occurred at almost one o’clock in the middle of the night.
The surface where they slip or collide is called a “fault place”. The location below the earth’s surface where the earthquake starts is called the “hypocenter”, and the location directly above it on the surface of the earth is called the “epicenter.” Foreshocks, Mainshocks, and Aftershocks Sometimes an earthquake has fore shocks. These are smaller earthquake that occurs before a larger seismic event. The largest main earthquake is called the “main shock”. Main shocks are always
Tectonic processes active in the Cascadia subduction zone region include accretion, subduction, deep earthquakes, and active volcanism of the Cascades. 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.
A caldera is a large crater that’s volcanic. 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.
This covered things in lava and was very hard to recover because the lava cools and hardens turning it into something as hard as bedrock(Lassieur 3). Bedrock is one of the strongest rocks known to man and takes the strongest man-made technology to break through. Clearly, volcanoes are a very strong disaster that can destroy almost anything. Their winds are the most powerful from the eruption. These are formed from the earth 's crust and the tectonic plates under it.
The city also experiences activity from the Queen Charlotte-Fairweather fault system. This fault system has caused large earthquakes in the past. Between the North and pacific plates and the Queen Charlotte-Fairweather fault system Juneau has a high risk of serious earthquakes. Juneau frequently has multiple earthquakes a year. Last year Juneau went through over fourteen earthquakes and this year the city has only had six (Earthquake Track, 2015).
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. How do earthquakes form?