Essay On Earthquakes And Earthquakes

But there are some anomalies as there are earthquakes which don’t take place on a plate boundary and it’s the same with volcanoes. An example of this is Hawaii. Hawaii is a volcanic island which is found in the middle of a tectonic plate. Hawaii is an example of a hotspot. The places known as hotspots are volcanic regions thought to be fed by underlying mantle that is anomalously hot compared with the mantle elsewhere. They may be on, near to, or far from tectonic plate boundaries. There are two hypotheses to explain them. One suggests that they are due to hot mantle plumes that rise from the core-mantle boundary. The other hypothesis postulates that it is not high

In conclusion the recent conception and development of plate tectonic theory has greatly aided our understanding of the distribution of seismic events. We now understand that there is a correlation between earthquakes/volcanoes locations and their proximity to a plate boundary plates are continually moving and earthquakes and volcanoes are found along these boundaries. Exceptions to this rule such as Hawaii also help prove tectonic theory due to their unique creation. Whilst this has helped our understanding we also recognise the fact those in LEDCs with poor access to education are unaware of plate tectonic theory so they cannot understand the hazards that some countries face, nor have the means to mitigate against them thus worsening the

Volcanoes can be found throughout the entire world and are formed when there is a rupture in the mantle of the Earth's crust. This effect allows the output of volcanic lava, ash, and various types of gases. These tectonic plate breaks are normal, the planet Earth is divided into 17 tectonic plates and consistently move against each other forming shifts from low to high intensity. It can cause displacement of earth or water.

The plates are in constant motion. Where they interact, along their margins, important geological processes take place, such as the formation of mountain belts, earthquakes, and volcanoes” (Spall 1). Plate tectonics are one of the most influential factors of earthquakes. When tectonic plates slide past each other an earthquake occurs. Typical plate tectonics move at about the same rate your fingernail grows. The process is extremely slow before the plate moves significantly enough to cause an earth quake but it does happen. These tectonic plates are on the fault lines which are considered earthquake hot spots.

The Earth is always changing because of plate tectonics. Plate tectonics describes the behavior of earth's out shell, with pieces bumping and grinding each other about. Most of the world's active volcanoes are located along or near the boundaries between shifting plates and are called plate-boundary volcanoes. The Hawaiian Islands are one of the best examples of an intra-plate volcanic chain. They are developed by the northwest-moving Pacific Plate passing over an inferred hot spot that inmates the magma generating and volcano-formation process. The Ring of Fire in parts of the Pacific Ocean contain many active volcanoes which Mt. St. Helens is a part of. The zone along plate boundaries are the most geologically active regions on Earth.

The positioning of these volcanoes coincide with major plate boundaries. E.g. the volcanoes along the West coast of North America are the result of the Juan de Fuca

Earthquakes occur daily as plates of lithosphere travel on asthenosphere; however, some earthquakes are larger and cause more damage than others. Major earthquake zones include the circum-pacific region, Indonesia to Europe, Caribbean and Sandwich Islands, mid-ocean ridges, and East Africa. Larger earthquakes are rarer than smaller earthquakes, yet when they do occur, they are memorable. The Japan earthquake of 2011 and the Haiti earthquake of 2010 are memorable for unfavorable circumstances, yet are excellent sources of study for seismologists and geologists.

The Ring of Fire is a string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean. Roughly 90% of all earthquakes occur along the Ring of Fire, and the ring is dotted with 75% of all active volcanoes on Earth. The Ring of Fire is the result of plate tectonics. The Ring of Fire has long been an active site for earthquakes and volcanoes because of the active plate boundaries. Mountain ranges in the Ring of Fire, produced by subduction of one plate under another include the Andes Mountains of South America. The Ring of Fire has also produced three-quarters of all the world’s volcanoes.

Powerful earthquake hit central Mexico last Tuesday September 19, 2017, that cause more than 225 people to death. Building and school collapsed for the second time in just two weeks.

Indonesia is situated between two tectonically active plates: Australian and Eurasian plate. It is important to understand the amount of fault motion between these plates, as it is the major source of influence regarding eruptions in the region. The result of these tectonically active plates is the creation of the Circum-Pacific belt (termed the Pacific Ring of Fire) and the Alpide Belt. Figure 3 provides a pictorial view of both plates and their relation to the Circum-Pacific belt. The Circum-Pacific belt is the world’s greatest earthquake belt, with a series of fault lines stretching 25,00 miles7. An unfortunate circumstance for the inhabitants of Indonesia who are situated between these two belts, the eruptions of earthquakes and volcanoes are far too common. Essentially, volcanoes erupt either due to divergent tectonic plates pulling apart causing an eruption, or convergent tectonic plates coming together (forming great pressure) causing an eruption8. In the case of Indonesia and the Circum-Pacific belt, the latter is more common. Because Indonesia and

The pieces that make up the crust and mantle are called tectonic plates. They’re always slowly moving, and they can slide past each other or even bump into one another. The edges of these pieces, or plates, are called plate boundaries. They have lots of faults, which are the surfaces where they slip past each other, and these faults are where most earthquakes happen.

The geological setting of the earthquake study area is shown in figure 7 with belts of igneous, metamorphic and sedimentary rocks forming a variety of rock types.

The outward flow of energy from the Earth’s interior drives plate tectonics since the fundamental properties of size, distance from the Sun, and rate of rotation are what drive the internal process, surface properties, as well as the atmospheric properties of a planet. Planet Earth is very large, has a hot molten lava core, and rotates faster than Venus or Mars and is therefore able to sustain volcanic and tectonic activity. Active volcanoes such as Mount Saint Helens are usually located in mountain ranges along the boundaries of tectonic plates because plate tectonics are what cause much of Earth’s geology including seafloor spreading and subduction which lead to earthquakes, mountains, valleys, and volcanoes. A subduction zone is

While tracking all of Earths major earthquakes and volcanos there became trends that developed. These trends allowed me to actually learn from our own Earth. The most active area of our plate tectonics was subduction zones. This type of plate boundary was the reason for the majority of the earthquakes documented over the semester. Most of these earthquakes were shallow, but at times had very deep focal points. Because of the old, cold plate being sub ducted I saw significantly more deep focus earthquakes in this tectonic setting. Subduction zones were also responsible for the deepest earthquakes that were experienced throughout the semester. While capturing the title of the most active, deepest earthquakes, it also produced the largest earthquakes of the semester. Subduction zones accounted for nearly all of the earthquakes that registered a magnitude above 5.7. Because of these earthquakes being the largest, they also created the most damage. These plates were able to cause the most damage because of how much elastic energy they could store in their old, cold, and brittle plates. There were several earthquakes throughout the semester that took the lives of the people living in the area while causing destruction on their community infrastructure.

During the midst of December, a Siberian husky lay in a warm shed. In pain, the husky howls like never before. Her owner storms into the shed to prepare for the birthing of baby huskies. Howl after howl, one husky after another is born. The mother husky lay weak with four babies next to her. Finally, the fifth is born. As the mother husky begins to clean her new babies, she is thinking of names for them. Weeks later, the puppies are named and ready to journey outside for the first time. Staying close to their mother, they wander around the yard. Storm, the smallest puppy runs off. The family searches and searches, but cannot find him.